Patent Application
20230352811
The invention relates to a mobile communication antenna which is used to transmit and receive mobile communication signals, for example from cell phones.
Mobile communication antennas are usually used to establish a communication to cell phones. Those mobile communication antennas are normally mounted on masts for example. The mobile communication antennas are also optimized for the customer. Radiators used within the mobile communication antenna are chosen for the respective mobile communication bands and the number of communication bands the customer wants to operate the mobile communication antenna for. Therefore, a lot of different versions of the mobile communication antenna exist. This increases the requirements in the manufacturing process. Furthermore, a lot of cables are used for wiring the mobile communication antenna. This increases the production time and enhances the production costs and could also lead to faulty wirings that have to be corrected afterwards.
As such, it would be desirable to have a mobile communication antenna that can be produced more easy so that the individual customer needs can fully be considered.
An object of the present invention is seen in building a mobile communication antenna, wherein the individual requirements of the customer can be addressed and wherein the electrical parameters are reproducible.
The object is solved by a mobile communication antenna according to claim 1. Claims 2 to 24 describe further embodiments of the mobile communication antenna.
The mobile communication antenna according to the present invention comprises a reflector arrangement and a plurality of dual-polarized radiators. A reflector arrangement could be a single electrically conductive piece or a plurality of electrically conductive pieces like metal sheets for example. A reflector arrangement could also comprise a dielectric which is covered with an electrically conductive material. Furthermore, at least a first support frame structure is used, wherein the first support frame structure comprises a first support section and a second support section. The first support section and the second support section are arranged side by side and extend in the longitudinal direction of the mobile communication antenna. The first support frame structure comprises a connecting element which connects the first and second support sections in bridge-like manner and spans a first receiving room. The first support frame structure is arranged on the first side of the reflector arrangement and is directly or indirectly connected to the reflector arrangement. The wording “directly” is understood in such a way that the first support frame structure is in contact with the reflector arrangement and the wording “indirectly” is understood in such a way that for example other elements, like a profile arrangement, are in contact with the reflector arrangement, wherein the first support frame structures only in contact with those elements. The connecting element comprises a plurality of mounting sections, wherein dual-polarized radiator is mounted on at least some or all of the mounting sections. The dual-polarized radiators are spaced apart from one another on the first side of the reflector arrangement at least in the longitudinal direction of the mobile communication antenna.
It is very beneficial that the first support frame structure is used, which is made (preferably fully) of a dielectric material like plastic. Dual-polarized radiators can then be added to the first support frame structure, wherein the first support frame structure is then added to the first side of the reflector arrangement. Different requirements of a customer therefore result in a different support frame structures and/or different dual-polarized radiators. A lot of components are pre-manufactured and then only added doing manufacturing.
In another embodiment of the present invention, a second support frame structure is provided. The second support frame structure is arranged next to the first support frame structure and preferably the first and the second support frame structures extend on the same length in the longitudinal direction of the mobile communication antenna and more preferably also extend in the same height (away from the reflector arrangement). Alternatively, the second support frame structure could also be arranged at least partially in the first receiving room of the first support frame structure. The second support frame structure comprises a first support section and a second support section. The first support section and a second support section are arranged side by side and extend in the longitudinal direction of the mobile communication antenna. The second support frame structure is also made (preferably fully) of a dielectric material like plastic. The second support frame structure comprises a connecting element which connects the first and the second support sections in the bridge-like manner and spans a second receiving room. The second support frame structure is arranged on the first side of the reflector arrangement and is also directly or indirectly connected to the reflector arrangement. The connecting element comprises a plurality of mounting sections, wherein a dual-polarized radiator is mounted on at least some or all of the mounting sections, wherein the dual-polarized radiators are spaced apart from one another on the first side of the reflector arrangement at least in the longitudinal direction of the mobile communication antenna. It is very beneficial, that simply a second support frame structure can be added if the customer wants the mobile communication antenna to support additional mobile communication bands for example.
In another embodiment of the present invention, a second and a third support frame structure are provided, wherein the second and the third frame structure are arranged next to each other and are at least partially arranged in the first receiving room of the first support frame structure. The second and the third support frame structure are made (preferably fully) of the dielectric material like plastic. The second and the third frame structures each comprise a first support section and a support section. The first support section and a second support section of the respective first and second support frame structures are arranged side by side and extend in the longitudinal direction of the mobile communication antenna. The second support frame structure comprises a connecting element which connects the first and the second support sections of the second support frame structure in the bridge-like manner thereby spanning a receiving room. The third support frame structure also comprises a connecting element which connects the first and the second support sections in bridge-like manner thereby spanning a third receiving room. The second and the third support frame structures are arranged on the first side of the reflector arrangement and are directly or indirectly connected to the reflector arrangement. The connecting element of the respective second and third support frame structures comprises a plurality of mounting sections, wherein a dual-polarized radiator is mounted on at least some or all of the mounting sections, wherein the dual-polarized radiators on each connecting element are arranged on the first side of the reflector arrangement and are spaced apart from one another in at least the longitudinal direction of the mobile communication antenna. Dual-polarized radiators arranged on the first support frame structure are placed further away from the reflector arrangement than dual-polarized radiators arranged on the second or third support frame structure. As such, the dual-polarized radiators arranged on the first support frame structure are preferably configured to be operated in the low band, wherein dual-polarized radiators arranged on the second and third support frame structures are preferably configured to be operated in the mid band. It is very beneficial that the second and the third support frame structures are arranged at least partly within the first receiving room. Therefore, modular construction is achieved. If the customer needs a mobile communication antenna that can be operated in the low band, the first support frame structure is added, wherein the second and the third support frame structures are added if the customer requires operation of the mobile communication antenna in the mid band.
In another embodiment of the present invention, one or more spacers are arranged between the connecting element of the first support frame structure and the connecting element of the second support frame structure and one or more spacers are arranged between the connecting element of the first support frame structure and the connecting element of the third support frame structure. This increases the stability between the first support frame structure and the second and third support frame structures. In addition or alternatively, one or more spacers are arranged between the connecting element of the second support frame structure and the reflector arrangement and/or between the connecting element of the third support frame structure and the reflector arrangement. This increases the stability of the second support frame structure and the third support frame structure. In addition or alternatively, one or more spacers are arranged between the connecting element of the first support frame structure and the reflector arrangement. This increases the stability of the first support frame structure. The first, second and/or third support frame structures and the respective spacers are preferably made of a single piece.
In another embodiment of the present invention, the first support section of the first, second and/or third support frame structure comprises at least one fastening means or a plurality of fastening means which are spaced apart in the longitudinal direction of the mobile communication antenna and which are arranged at least partly on the second side of the reflector arrangement, wherein an electronic module, especially in form of a signal distribution unit, is hold in place by the at least one or by the plurality of fastening means.
In another embodiment of the present invention, the at least one fastening means or the plurality of fastening means are U-shaped so that the respective electronic module can be hold in place by a clamping mechanism.
In another embodiment of the present invention, a first and a second profile arrangement are provided and arranged next to each other and which extend in the longitudinal direction of the mobile communication antenna. The first and the second profile arrangement are arranged at least on a second side of the reflector arrangement which is opposite the first side. The wording “at least on a second side” would also allow that the respective profile arrangement could arranged partly on the first side of the reflector arrangement too. The first profile arrangement is connected with the reflector arrangement and/or with the first support section of the first support frame structure. The second profile arrangement is connected with the reflector arrangement and/or with the second support section of the first support frame structure. This increases the stability and allows that the thickness of the reflector arrangement can be reduced.
In another embodiment of the present invention, the first profile arrangement comprises a fastening area, wherein the fastening area comprises at least one first receiving groove or at least one first receiving projection which extends in the longitudinal direction of the mobile communication antenna and which is arranged in the first side of the reflector arrangement. The first supporting section of the first support frame structure is arranged on the at least one first receiving groove or receives the first receiving projection. The second profile arrangement comprises a fastening area, wherein the fastening area comprises at least one first receiving groove or at least one first receiving projection which extends in the longitudinal direction of the mobile communication antenna and which is arranged on the first side of the reflector arrangement. The second supporting section of the first support frame structure is arranged in the at least one first receiving groove or receives the first receiving projection. It is very beneficial that the first support frame structure can easily be arranged on the first and second profile arrangement.
In another embodiment of the present invention, the first support frame structure is attached in the respective first receiving groove and/or is attached to the first receiving projection of the first and second profile arrangement at a predetermined position or at an arbitrary position. Depending on the customer needs the first support frame structure can be mounted at the designated position.
In another embodiment of the present invention, at least a third profile arrangement is provided. The third profile arrangement is arranged at least on the second side of the reflector arrangement between the first and the second profile arrangement and extends in the longitudinal direction of the mobile communication antenna. The first profile arrangement is connected with the reflector arrangement and/or with the first support section of the first support frame structure and the first support section of the second support frame structure. The second profile arrangement is connected with the reflector arrangement and/or with the second support section of the first support frame structure and the second support section of the third support frame structure. The third profile arrangement is connected with the reflector arrangement and/or with the second support section of the second support frame structure and the first support section of the third support frame structure. This simplifies the fastening between the first, second and third support frame structures and the respective first, second and third profile arrangements.
The first, second and/or the third profile arrangements are preferably made of a metal piece and are more preferably made of a single metal piece and are more preferably made of an (metal or plastic) extrusion part.
In another embodiment of the present invention, the connecting element of the first support frame structure comprises a plurality of cross struts which are U-shaped and extend from the first support section to the second support section. The connecting element of the first support frame structure also comprises one or more longitudinal struts extending in the longitudinal direction of the mobile communication antenna. The one or more longitudinal struts connect cross struts to each other. The same could also be true for the second and/or third support frame structure. As a result, the first, second and/or third support frame structures preferably comprise lattice base structure.
In another embodiment of the present invention, the at least one longitudinal strut or the plurality of longitudinal struts are hollow, wherein a cable pull passes through them or wherein a coolant flows through them. It could also be, that the first and/or second support section of the first support frame structure comprises a hollow longitudinal strut through which a cable pull is passed through which coolant flows. The same could also be true for the second and/or third support frame structure.
In another embodiment of the present invention, spacers are provided which are arranged at the connecting element of the first support frame structure and point away from the reflector arrangement and are configured to keep a radome or radome foil at a distance from the dual-polarized radiators.
In another embodiment of the present invention, the first support frame structure comprises a plurality of dual-polarized radiators which are arranged in m columns, with m > 1, 2, 3, 4, wherein the dual-polarized radiators in the m columns are spaced apart from one another in the longitudinal direction of the mobile communication antenna. The same could also be true for the second and/or third support frame structure.
In another embodiment of the present invention, each dual-polarized radiator of the first support frame structure has a first connector for a first polarization and a second connector for a second polarization. The respective first connectors of the dual-polarized radiators of the column are coupled to first terminals of a signal distribution unit for mobile radio signal transmission and the respective second connectors of the dual-polarized radiators of the column are coupled to second terminals of the signal distribution unit for mobile radio signal transmission. The wording “coupled” is understood in such a way that either a galvanic connection or a capacitive coupling between the respective connectors and the respective terminals as possible. The capacitive coupling is preferred, because then no soldered joints have to be used. More preferably, the respective dual-polarized radiators each column are connected to the respective signal distribution units solder free by using a capacitive coupling. The same could also be true for the dual-polarized radiators attached to the second and/or third support frame structure. Preferably one signal distribution unit is used for each column of dual-polarized radiators in the respective first, second and/or third support frame structure.
In another embodiment of the present invention, the electronic module, especially the respective signal distribution unit extends in the longitudinal direction of the mobile communication antenna and comprises a dual-signal distributor, wherein said one dual-signal distributor comprises said first and second terminals. The respective signal distribution unit could also comprise two single-signal distributors (= mono-signal distributors) housed in separate enclosures, wherein the first single-signal distributor only comprises the first terminal and wherein the second single-signal distributor only comprises the second terminals.
In another embodiment of the present invention the dual-signal distributor comprises two housing halves. A partition wall is arranged between them, so that two separate chambers are formed. A first phase shifter for mobile communication signals of the first polarization is arranged in the first chamber. The plurality of ports of the first phase shifter is connected via the plurality of first terminals of the dual-signal distributor to the plurality of first connectors of the dual-polarized radiators in the same column. Furthermore, a second phase shifter for mobile communication signals of a second polarization is arranged in the second chamber. The plurality of ports of the second phase shifter is connected via the plurality of second terminals of the dual-signal distributor to the plurality of second connectors of the dual-polarized radiators in the same column.
The first single-signal distributor comprises two housing halves. On the one hand, a phase shifter for mobile communication signals of a first polarization is arranged between the two housing halves, wherein the plurality of ports of the phase shifter is connected via the plurality of first terminals of the first single-signal distributor to the plurality of first connectors of the dual-polarized radiators of the same column. On the other hand, partitions are arranged between the housing halves, thereby forming at least three separate chambers. A first phase shifter for mobile communication signals of a first polarization in a first frequency range (for example a first mobile communication band) is arranged in the first chamber. A second phase shifter for mobile communication signals of a first polarization and a second frequency range (for example a second mobile communication band) is arranged in the second chamber. A printed circuit board arrangement or a sheet metal part arrangement or a coated plastic material arrangement is arranged in the third chamber. The printed circuit board arrangement or the sheet metal part arrangement or the coated plastic material arrangement comprises a circuit structure configured to connect a respective one of the plurality of ports of the first phase shifter and a respective one of the plurality of ports of the second phase shifter to each other and to a respective first terminal of the first single-signal distributor, wherein the plurality of first terminals of the first single-signal distributor are connected to the plurality of first connectors of the dual-polarized radiators of the same column. The printed circuit board arrangement or the sheet metal part arrangement or the coated plastic material arrangement could also comprise a filter network and/or a frequency split.
The second single-signal distributor comprises two housing halves. On the one hand, a phase shifter for mobile communication signals of a second polarization is arranged between the two housing halves, wherein the plurality of ports of the phase shifter is connected via the plurality of second terminals of the second single-signal distributor to the plurality of second connectors of the dual-polarized radiators of the same column. On the other hand, partitions are arranged between the housing halves, thereby forming at least three separate chambers. A first phase shifter for mobile communication signals of a second polarization in a first frequency range (for example a first mobile communication band) is arranged in the first chamber. A second phase shifter for mobile communication signals of a second polarization and a second frequency range (for example a second mobile communication band) is arranged in the second chamber. A printed circuit board arrangement or a sheet metal part arrangement or a coated plastic material arrangement is arranged in the third chamber. The printed circuit board arrangement or the sheet metal part arrangement or the coated plastic material arrangement comprises a circuit structure configured to connect a respective one of the plurality of ports of the first phase shifter and a respective one of the plurality of ports of the second phase shifter to each other and to a respective second terminal of the second single-signal distributor, wherein the plurality of second terminals of the second single-signal distributor are connected to the plurality of second connectors of the dual-polarized radiators of the same column. The printed circuit board arrangement or the sheet metal part arrangement or the coated plastic material arrangement could also comprise a filter network and/or a frequency split.
In another embodiment of the present invention, the first support frame structure is a single piece, wherein the plurality of dual-polarized radiators is arranged in m columns, with m ≥ 1, 2, 3, 4. Alternatively, the first support frame structure is subdivided into several separate first support frame structure modules, which are arranged adjacent to each other in the longitudinal direction of the mobile communication antenna, whereby on each support frame structure module a dual-polarized radiator arranged in each of the m columns, with m ≥ 1, 2, 3, 4. It could also be that on each support frame structure module several dual-polarized radiators are spaced apart from one another in the longitudinal direction of the mobile communication antenna in the m columns, with m ≥ 1, 2, 3, 4. The same could also be true for the second and/or third support frame structure.
The respective support frame structure modules could also be jointed together, for example by using a plug connection which is preferably established in the respective first and/or second support section.
In another embodiment of the present invention, the connecting element comprises a first and the second part perpendicular or predominantly perpendicular to the reflector arrangement. The wording “predominantly perpendicular” is understood in such a way that an angle between the first and the second part towards the reflector arrangement is larger than 45° and smaller than 135°. At least one fastening means is attached to the first and/or second support section and/or to the first and/or second part. The fastening means is configured to provide a releasable mechanical connection between the first support frame structure and another (corresponding) fastening means which is located at the reflector arrangement and/or at a first and/or second profile arrangement and/or at a second and/or third support frame structure and/or at a signal distribution unit. The same could also be true for the second and/or the third support frame structure.
In another embodiment of the present invention, dual-polarized high band radiators are arranged on the first side of at least one part of the reflector arrangement. The dual-polarized high band radiators are at least partially or completely arranged within the first receiving room of the first support frame structure.
In another embodiment of the present invention, this part of the reflector arrangement, on which the dual-polarized high band radiators are arranged is configured to be pulled out of the mobile communication antenna so that it can be replaced even in the mounted state of the mobile communication antenna.
In another embodiment of the present invention, active components (for example power amplifiers, low noise amplifiers) are arranged on the second side of the part of the reflector arrangement, on which the dual-polarized high band radiators are arranged.
The low band preferably comprises a frequency range of 600 MHz or 650 MHz or 698 MHz to 960 MHz.
The mid-band preferably comprises a frequency range of 1427 MHZ to 2700 MHz or 1695 MHZ to 2700 MHz.
The high band preferably comprises a frequency range of 3300 MHz to 3800 MHz or 3300 MHZ to 4200 MHz or 4500 MHz to 5000 MHz, 6000 MHz or 7000 MHz or 8000 MHz.
Different embodiments of the invention will be described in the following, by way of example and with reference to the drawings. The same elements are provided with the same reference signs. The figures show in detail:
The dual-polarized radiators 3 are configured to operate as low band dual-polarized radiators 3a, mid band dual-polarized radiators 3b or high band dual-polarized radiators 3c. Within
The radiators 3 are arranged on a first side 2a of the reflector arrangement 2.
The dual-polarized low band radiators 3a are kept in position by using a first support frame structure 4. The dual-polarized mid band radiators 3b are kept in position by using second and/or third support frame structures 5, 6.
The respective first, second, third support frame structure 4, 5, 6 preferably comprise a dielectric material like plastic or consist of a dielectric material like plastic.
The respective first, second, third support frame structure 4, 5, 6 extend in the longitudinal direction of the mobile communication antenna 1. As will be explained below, it could be possible that only a first support frame structure 4 for the dual-polarized low band radiators 3a is used. It could also be that only first and second support frame structures 4, 5 for the dual-polarized mid band radiators 3b are used. It could also be that the first support frame structure 4 is used for the dual-polarized low band radiators 3a and the second and third support frame structures 5, 6 are used for the dual-polarized mid band radiators 3b. In addition or alternatively, the dual-polarized high band radiators 3c can be added depending on the customer needs. As such, the first, second and third support frame structure 4, 5, 6 are modular and can be used within the mobile communication antenna 1 alone or in combination with the other support frame structures.
The part of the reflector arrangement 3 on which the dual-polarized high band radiators 3c are mounted is preferably exchangeable while the mobile communication antenna 1 is still mounted on the mast.
On the second side 2b of the reflector arrangement 2 there is preferably a first, second and/or third profile arrangement 7, 8, 9 arranged. In addition or alternatively, there could also be a signal distribution unit 10 arranged. Power amplifiers and/or low noise amplifiers could also be arranged on the second side 2b of the reflector arrangement 2. By using a feeder cable 11, the plurality of dual-polarized radiators 3 are connected to a base station (not shown).
A radome 12 or a radome foil encloses the components arranged within. Spacers 13 which are preferably arranged on the first support frame structure 4 ensure that the desired distance between the radome 12 or the radome foil and the dual-polarized radiators 2 is maintained. Those spacers 13 are preferably arranged not only at the first side 2a of the reflector arrangement 2 but also on the second side 2b of the reflector arrangement 2. More preferably, the spacers 13 have a flat or rounded end so that they do not damage the radome 12 or the radome foil.
Furthermore, spacers 13 are arranged preferably on top of the connecting element 16 ensuring that the radome 12 stays contact free to the dual-polarized radiators 3.
In addition, the connecting element 16 comprises a plurality of mounting sections 18, wherein dual-polarized radiators 3, especially dual-polarized low band radiators 3a are mounted on at least one or all of the mounting sections 18. The dual-polarized radiators 3 are spaced apart from one another on the first side 2a of the reflector arrangement 2 in the longitudinal direction of the mobile communication antenna 1. The dual-polarized radiators 3 are preferably attached to the connecting element 16 by using a snap in connection. The connection is preferably solder free.
Furthermore, the first support frame structure 4 is arranged on the first side 2a of the reflector arrangement 2 and is directly or indirectly connected to the reflector arrangement 2. Within
The first and second profile arrangements 7, 8 are arranged next to each other and extend in the longitudinal direction of the mobile communication antenna 1. The first and the second profile arrangements 7, 8 are arranged at least on the second side 2b of the reflector arrangement 2. As can be seen, the first and the second profile arrangements are also arranged on the first side 2a of the reflector arrangement 2. The first profile arrangement 7 is connected to the reflector arrangement 2. The first profile arrangement 7 is also connected to the first support section 14 of the first support frame structure 4. The second profile arrangement 8 is connected to the reflector arrangement 2 and to the second support section 15 of the first support frame structure 4. The connection is preferably a plug connection which could also comprise snap in elements for fixation.
The first profile arrangement 7 comprises a fastening area 19, wherein the fastening area 19 comprises at least one first receiving groove (a first receiving projection would also be possible). The first receiving groove extends in the longitudinal direction of the mobile communication antenna 1 and is preferably arranged on the first side 2a of the reflector arrangement 2. The first supporting section 14 of the first support frame structure 4 engages in the at least one first receiving groove. The second profile arrangement 8 also comprises a fastening area 19, wherein the fastening area 19 comprises at least one first receiving groove (a first receiving projection would also be possible). The first receiving groove extends in the longitudinal direction of the mobile communication antenna 1 and is probably arranged on the first side 2a of the reflector arrangement 2. The second supporting section 15 of the first support frame structure 4 engages in the at least one first receiving groove.
The profile arrangement 7, 8 of
The first support frame structure 4 is attached in the respective first receiving groove of the first and second profile arrangement 7, 8 at a predetermined position or at an arbitrary position. A predetermined position could be achieved if a snap in connection rests into the respective counterpart. An arbitrary position could be achieved by using a clamped connection for example.
The first profile arrangement 7 encloses (at least partly) at least one first receiving room 20 on the second side 2b of the reflector arrangement 2, wherein a signal distribution unit 10 is arranged in this at least one first receiving room 20. The receiving room 20 is preferably open to one end, so that an electronic module, especially in form of the signal distribution unit 10 can preferably plugged into / pushed into the receiving room 20. The signal distribution unit 10 preferably stays within the receiving room 20 because of fastening means like a snap in connection or clampening means.
The second profile arrangement 8 also encloses (at least partly) at least one first receiving room 20 on the second side 2b of the reflector arrangement 2, wherein the electronic module, especially in form of a signal distribution unit 10 is arranged in this at least one first receiving room 20. The receiving room 20 is preferably open to one end, so that the signal distribution unit 10 can preferably plugged into / pushed into the receiving room 20. The signal distribution unit 10 preferably stays within the receiving room 20 because of fastening means like a snap in connection or clampening means.
The reflector arrangement 2 could be clamped and/or screwed to the respective first and second profile arrangement 7, 8. Preferably, the end parts of the reflector arrangement 2 are bent (for example perpendicular to the rest of the reflector arrangement 2), wherein the bent parts of the reflector arrangement 2 could then be inserted into grooves of the first and the second profile arrangements 7, 8. The first and second profile arrangement 7, 8 preferably comprise a metal or metal alloy or consist of a metal or metal alloy. Preferably, the first and the second profile arrangements 7, 8 are an extruded part. Preferably, most parts of the first and the second profile arrangements 7, 8 are arranged on the second side 2b of the reflector arrangement 2. The first and the second profile arrangements 7, 8 are preferably made of a single piece.
Furthermore, a third profile arrangement 9 is arranged at least on the second side 2b of the reflector arrangement 2. The third profile arrangement 9 is arranged between the first and the second profile arrangements 7, 8 and also extends in the longitudinal direction of the mobile communication antenna 1. The third profile arrangement 9 is preferably connected with the second support section 15 of the second support frame structure 5 and the first support section 14 of the third support frame structure 6. In addition or alternatively, the third profile arrangement 9 could also be connected with the reflector arrangement 2.
The profile arrangement 7, 8, 9 of
The third profile arrangement 9 comprises a fastening area 19, wherein the fastening area 19 comprises at least one first receiving groove and one second receiving groove. The second supporting section 15 of the second support frame structure 5 is arranged within the first receiving groove of the third profile arrangement 9. The first supporting section 14 of the third support frame structure 6 is arranged within the second receiving groove of the third profile arrangement 9. Instead of the groove also projection could be used.
The first, second and/or third support frame structures 4, 5, 6 can be arranged within the respective first and/or second receiving grooves at a predetermined position or at an arbitrary position.
The connecting element 16 of the respective second and third support frame structure 5, 6 comprises a plurality of mounting sections 18, wherein dual-polarized radiators 3 are attached on at least some or all of the mounting sections 18. The dual-polarized radiators 3 on each connecting element 18 are arranged on the first side 2a of the reflector arrangement 2 and are spaced apart from one another in the longitudinal direction of the mobile communication antenna 1.
Preferably, there are also one or more spacers 13 which are arranged between the connecting element 16 of the first support frame structure 4 and the connecting element 16 of the second support frame structure 5 and/or the third support frame structure 6.
It would also be possible that one or more spacers 13 are arranged between the connecting element 16 of the second support frame structure 5 and the reflector arrangement 2 and/or between the connecting element 16 of the third support frame structure 6 and a reflector arrangement 2. In general, there could also be one or more spacers 13 arranged between the connecting element 16 of the first support frame structure 4 and the reflector arrangement 2.
Dual-polarized mid band radiators 3b are attached to the mounting sections 18 on the connecting element 16 of the second and third support frame structures 5, 6. There are two columns in each of the second and third support frame structures 5, 6 which means that dual-polarized mid band radiators 3b are arranged next to each other in separate columns and are spaced from each other in the longitudinal direction of the mobile communication antenna 1.
Dual-polarized high band radiators 3c are attached on the reflector arrangement 2. The dual-polarized high band radiators 3c are preferably arranged within the second receiving room 23 and the third receiving room 24. More preferably, the dual-polarized high band radiators 3c are also arranged within the first receiving room 20. The dual-polarized high band radiators 3c are preferably arranged in two arrays which are arranged next to each other (one array in the second receiving room 23 and one array in the third receiving room 24). Each array comprises a plurality of columns (in this example four columns), wherein each column comprises a plurality of dual-polarized high band radiators 3c that are spaced apart in the longitudinal direction of the mobile communication antenna 1. The high band radiators 3c are preferably configured in such a way that mMIMO operation is possible.
Active components 25 comprising for example power amplifiers and/or low noise amplifiers, are preferably arranged on the second side 2b of the reflector arrangement 2 underneath the high band radiators 3c. Those active components 25 are preferably only connected to that part of the reflector arrangement 2 which is exchangeable together with the plurality of high band radiators 3c.
Each of the first, second and third profile arrangements 7, 8, 9 preferably comprises a first and the second receiving room 20, 21, wherein a respective signal distribution unit 10 is arranged in each of the receiving rooms 20, 21.
As such, dual-polarized high band radiators 3c which are attached on the reflector arrangement 2 have preferably the same distance to each other in a direction perpendicular to the longitudinal direction of the mobile communication antenna 1. They preferably also have the same distance to each other in the longitudinal direction of the mobile communication antenna 1. In that case eight columns are provided each comprising a plurality of dual-polarized high band radiators 3c. However, also a different number of columns like two, three, four, five, six, seven, nine, ten, eleven, twelve and even more could be provided.
The high band radiators 3c could be arranged on an exchangeable plate of the reflector arrangement 2. This exchangeable plate could then be slid into the second receiving room 23 on demand. This could even be done while the mobile communication antenna 1 is mounted on the mast. In that case, at least a part of the reflector arrangement 2 which does not comprise any high band radiators 3c could be exchanged with the exchangeable plate of the reflector arrangement 2 comprising the high band radiators 3c. On the second side of this exchangeable plate of the reflector arrangement 2 active components 25 could be arranged suitable for the operation of the high band radiators 3c. As such, the exchangeable plate of the reflector arrangement 2 could be manufactured and tested before being installed.
The mobile communication antenna 1 could also comprises a mixed arrangement. Over a specific length in the longitudinal direction where the high band radiators 3c are arranged as well low band radiators 3a and mid band radiators 3b only a first and a second support frame structure 4, 5 could be used, wherein at other positions, where only low band radiators 3a and/or mid band radiators 3b are used, first, second and third support frame structures 4, 5, 6 could be used.
The first support frame structure 4 could be made of a single piece. The first support frame structure 4 could also be subdivided into several separate first support frame structure modules 4a as shown in
By using several separate first support frame structure modules 4a, the distance between the respective dual-polarized radiators 3 along the longitudinal direction of the mobile communication antenna 1 could always be the same or could be different.
If several separate first support frame structure modules 4a are used, they could be jointed together at their respective first support section 14 and their second support section 15. They could also be aligned next each other without a spacing in between along the longitudinal direction of the mobile communication antenna 1.
The connecting element 16 of the first support frame structure 4 (or the separate first support frame structure module 4a as depicted in
The at least one longitudinal strut 27 could also be hollow so that a cable pull could be passed inside. A coolant flow could also be passed through the at least one longitudinal strut 27.
At least one of the longitudinal struts 27 or all of the longitudinal struts 27 of the first support frame structure 4 are arranged exactly above at least one longitudinal strut 27 of the second support frame structure 5 and/or the third support frame structure 6. In that case, spacers 13 which would preferably be arranged at the longitudinal struts 27 would always be in contact with the other longitudinal strut 27 of the above first support frame structure 4 or in contact with the second or third support frame structure 5, 6 no matter whether the respective first, second and/also support frame structure 5 is moved along the longitudinal direction of the mobile communication antenna 1.
Other elements like a director 28 could also be added to the respective dual-polarized radiator 3. Preferably the director 28 could be attached to the already existing mounting section 18 above the respective dual-polarized radiator 3, so that the director 28 is not galvanically connected to the respective dual-polarized radiator 3. Preferably, the first support frame structure 4 comprises one or more guiding elements 29. Those guiding elements 29 can be used for fastening and/or holding and/or guiding first and second terminals 30a, 30b coming from the signal distribution unit 10. Those guiding elements 29 could also be used for fastening and/or holding and/or guiding a respective first and second connector 31a, 31b from the respective dual-polarized radiator 3.
As can be seen each dual-polarized radiator 3 has a first connector 31a for first polarization and the second connector 31b for a second polarization. Preferably, the first and the second connectors 31a, 31b are galvanically connected to the respective dual-polarized radiator 3 at the outer part of the respective radiating element. The connection could also be at the inner part. The connection could also be of a capacitive form. More preferably, the first and the second connector 31a, 31b run towards the respective sides of the first support frame structure 4 and from there at least partly towards the respective first support section 14 or second support section 15. More preferably, the first and the second connectors 31a, 31b of each of the dual-polarized radiators 3 are spaced apart in the longitudinal direction of the mobile communication antenna 1. If the first support frame structure 4 comprises two columns (as shown in
Furthermore, the first support section 14 of the first support frame structure 4 comprises at least one fastening means 32 or a plurality of fastening means 32 which are spaced apart in the longitudinal direction of the mobile communication antenna 1 and which are arranged at least partly on the second side 2b of the reflector arrangement 2. The electronic module, especially in form of a signal distribution unit 10, is therefore hold by the at least one or by the plurality of fastening means 32. In Addition or alternatively, the second support section 15 of the first support frame structure 4 comprises at least one fastening means 32 or a plurality of fastening means 32 which are spaced apart in the longitudinal direction of the mobile communication antenna 1 and which are arranged at least partly on the second side 2b of the reflector arrangement 2. The electronic module, especially in form of a signal distribution unit 10, is therefore hold by the at least one or by the plurality of fastening means 32.
The respective fastening means 32 or the plurality of fastening means 32 are preferably U-shaped. The opening of the fastening means 32 preferably faces away from the reflector arrangement 2 so that the electronic module can be inserted into the opening by moving the electronic module towards the second side of the reflector arrangement 2. The electronic module is preferably hold by the fastening means 32 exerting a clamping force. Additional adhesive and/or screws could also be used.
The respective mobile communication antenna 1 could comprise both the respective profile arrangement 7, 8, 9 and the respective fastening means 32. However, one of these fastening methods would also be enough.
In general, all the aforementioned explanations regarding the first support frame structure 4 are preferably also true for the second support frame structure 5 and the third support frame structure 6. The only difference is that the second support frame structure 5 and the third support frame structure 6 (preferably) do not extend as far away from the reflector arrangement 2 as the first support frame structure 4. The second support frame structure 5 could also be made of a single piece. The third support frame structure 6 could also be made of a single piece. Both support frame structures 5, 6 could also be made of the common single piece. As can be seen, the second and the third support frame structure 5, 6 each comprises two columns. Within each column, there are twelve dual-polarized mid band radiators 3b arranged. The distance between two dual-polarized mid band radiators 3b of the same column the smaller compared to the distance between two dual-polarized low band radiators 3a of a column within the first support frame structure 4. The respective connecting element 16 of the second and the third support frame structure 5, 6 each preferably comprise a plurality of cross struts 26 which are U-shaped and extend from the respective first support section 14 to the second support section 15. Furthermore, the respective connecting element 16 comprises one or more longitudinal struts 27 extending in the longitudinal direction of the mobile communication antenna 1, wherein the one or more longitudinal struts 27 connect the respective cross struts 26 to each other.
Each of the dual-polarized mid band radiators 3b of the second and third support frame structures 5, 6 has a first connector 31a for a first polarization and a second connector 31b for a second polarization. The first and second connectors 31a, 31b of the first column in the second support frame structure 5 run towards the first support section 14 of the second support frame structure 5. If there is a profile arrangement used, then they would run towards the first profile arrangement 7.
The first and second connectors 31a, 31b of the second column in the second support frame structure 5 run towards the second support section 15 of the second support frame structure 5. If there is a profile arrangement used, then they would run towards the third profile arrangement 9.
The first and second connectors 31a, 31b of the first column in the third support frame structure 6 run towards the first support section 14 of the third support frame structure 6. If there is a profile arrangement used, then they would run towards the third profile arrangement 9.
The first and second connectors 31a, 31b of the second column in the third support frame structure 6 run towards the second support section 15 of the third support frame structure 6. If there is a profile arrangement used, then they would run towards the second profile arrangement 8.
Instead of a first, second and third profile arrangement 7, 8, 9 or in addition thereto, respective fastening means 32 could be used as well as shown in
The first support section 14 of the second support frame structure 5 comprises at least one fastening means 32 or a plurality of fastening means 32 which are spaced apart in the longitudinal direction of the mobile communication antenna 1 and which are arranged at least partly on the second side 2b of the reflector arrangement 2. The electronic module, especially in form of a signal distribution unit 10, is therefore hold by the at least one or by the plurality of fastening means 32. In Addition or alternatively, the second support section 15 of the second support frame structure 5 comprises at least one fastening means 32 or a plurality of fastening means 32 which are spaced apart in the longitudinal direction of the mobile communication antenna 1 and which are arranged at least partly on the second side 2b of the reflector arrangement 2. The electronic module, especially in form of a signal distribution unit 10, is therefore hold by the at least one or by the plurality of fastening means 32.
Furthermore, the first support section 14 of the third support frame structure 6 comprises at least one fastening means 32 or a plurality of fastening means 32 which are spaced apart in the longitudinal direction of the mobile communication antenna 1 and which are arranged at least partly on the second side 2b of the reflector arrangement 2. The electronic module, especially in form of a signal distribution unit 10, is therefore hold by the at least one or by the plurality of fastening means 32. In Addition or alternatively, the second support section 15 of the third support frame structure 6 comprises at least one fastening means 32 or a plurality of fastening means 32 which are spaced apart in the longitudinal direction of the mobile communication antenna 1 and which are arranged at least partly on the second side 2b of the reflector arrangement 2. The electronic module, especially in form of a signal distribution unit 10, is therefore hold by the at least one or by the plurality of fastening means 32.
The second and third support frame structures 5, 6 also comprise clamping elements 32.
Preferably, there are as many signal distribution units 10 as there are columns of dual-polarized low band radiators 3a and dual-polarized mid band radiators 3b. As will be explained below, each signal distribution unit 10 is configured to transmit and receive a mobile communication signal in a first polarization and in a second polarization to and from the respective radiators 3 in one column of the respective first, second and third support frame structures 4, 5, 6.
If the customer needs fewer radiators 3 in each row, fewer separate first support frame structure modules 4a and/or fewer separate second support frame structure modules 5a and/or fewer separate third support frame structure modules 6a are used.
Each first and second terminal 34a, 34b is preferably a strip line and more preferably a microstrip. As such, the first and second terminal 34a, 34b comprises a signal line 35 and a ground line 36 both running parallel to each other. A cable connection (for example by using a coaxial cable) could also be possible.
The first connector 31a of the dual-polarized radiator 3 runs at least parallel over a part of its length (next) to the signal line 35 and therefore also to the ground line 36 of a first terminal 34a. The signal line 35 is preferably in the middle of the ground line 36 and the first connector 31a. The second connector 31b of the dual-polarized radiator 3 runs at least parallel over a part of its length to the signal line 35 and therefore also to the ground line 36 of a second terminal 34b. The signal line 35 is preferably in the middle of the ground line 36 and the second connector 31b. The connection between the respective first connector 31a of the dual-polarized radiator 3 and the first terminal 34a is a capacitive coupling and the connection between the respective second connector 31b of the dual-polarized radiator 3 and the second terminal 34b is a capacitive coupling. A galvanic coupling, for example by using a solder joints would also be possible.
The dual-signal distributor 10a comprises 2 housing halves 37a, 37b and the partition wall 38 arranged between them. As such, two separate chambers are formed. A first phase shifter 39a used for a first polarization is arranged in the first chamber. The plurality of ports of the first phase shifter 39a are connected via the plurality of first terminals 34a of the dual signal distributor 10a to the plurality of first connectors 31a of the dual-polarized radiators 3 of a column. A second phase shifter 39b used for a second polarization is arranged in the second chamber. The plurality of ports of the second phase shifter 39b are connected via the plurality of second terminals 34b of the dual signal distributor 10a to the plurality of second connectors 31b of the dual-polarized radiators 3 of a column. The housing halves 37a, 37b therefore have openings so that the first and the second terminals 34a, 34b can extend through. The ground line 36 of the respective terminal 34a, 34b and the respective housing halve 37a, 37b are preferably made of a single piece. The signal line 35 and the ground line 36 are preferably free of any bends and extend more preferably in a respective plane.
The plurality of first terminals 34a and the plurality of second terminals 34b are spaced apart from one another in the longitudinal direction of the mobile communication antenna 1. The first terminal 34a is preferably also spaced in a direction perpendicular to the longitudinal direction of the mobile communication antenna 1 from the second terminal 34b.
Both housing halves 37a, 37b could be soldered and/or pressed and/or screwed together. The first and the second phase shifters 39a, 39b are preferably linear phase shifters 39a, 39b.
Instead of using a dual signal distributor 10a several (especially two) single-signal distributors 10b could also be used. Various embodiments of single-signal distributors 10b are shown in
The first single-signal distributor 10b1 comprises two housing halves 37a, 37b. A phase shifter for mobile communication signals of a first polarization is arranged between the two housing halves 37a, 37b, wherein the plurality of ports of the phase shifter are connected via the plurality of first terminals 34a of the first single-signal distributor 10bi to the plurality of first connectors 31a of the dual-polarized radiators 3 of a column.
In addition, a second single-signal distributor 10b2 comprises two housing halves 37a, 37b. A phase shifter for mobile communication signals of a second polarization is arranged between the two housing halves 37a, 37b, wherein the plurality of ports of the phase shifter are connected via the plurality of second terminals 34b of the second single-signal distributor 10b2 to the plurality of second connectors 31b of the dual-polarized radiators 3 of a column.
Another embodiment of a first and/or second single-signal distributor 10b1, 10b2 is shown in
The second single-signal distributor 10b2 also comprises (two) partitions 40 arranged between the housing halves 37a, 37b, thereby forming at least three separate chambers. A first phase shifter 39a for mobile communication signals of a second polarization and a first frequency range (for example a first mobile communication band) is arranged in the first chamber. A second phase shifter 39b for mobile communication signals of a second polarization and a second frequency range (for example a second mobile communication band different from the first mobile communication band) is arranged in the second chamber. A printed circuit board arrangement 41 is arranged in the third chamber, wherein the printed circuit board arrangement 41 comprises a circuit structure configured to connect a respective one of the ports of the first phase shifter 39a and a respective one of the ports of the second phase shifter 39b to each other and to a respective second terminal 34b of the second single-signal distributor 10b2, wherein the plurality of second terminals 34b of the second single-signal distributor 10bb are connected to the plurality of second connectors 31b of the dual-polarized radiators 3 of a column. Instead of a printed circuit board arrangement 41, a sheet metal part arrangement or a coated plastic material arrangement could also be used.
Within the embodiments of
The first and second single-signal distributors 10b1, 10b2; shown in
Within
Within
The common port of each first and second phase shifter 39a, 39b is preferably visible at the front side of the signal distribution unit 10.
The dual-polarized high band radiators 3c are preferably at least partially or completely arranged in the first receiving room 17 of the first support frame structure 4. The respective part of the reflector arrangement 2 on which the dual-polarized high band radiators 3c are arranged is configured to be pulled out of the mobile communication antenna 1 so that it can be replaced even if the mobile communication antenna 1 is mounted at the mast. Within
Within
In the following, some embodiments of the mobile communication antenna 1 are described separately. The first support frame structure 4 is preferably attached to the respective first and second profile arrangements 7, 8 without the use of screws and/or solder joints. The same is also true for the second support frame structure 5 with respect to the first and third profile arrangements 7, 9 and for the third support frame structure 7 with respect to second and third profile arrangements 8, 9.
If the respective first, second, third support frame structures 5, 6, 7 are directly connected to a signal distribution unit 10, this connection is preferably also free of a screw connection and/or free of solder joints. This connection is preferably done by fastening means 32.
More preferably, the first, second and/or third support frame structures 5, 6, 7 can be exchanged from the mobile communication antenna without removing any screws. The first, second and/or third support frame structures 5, 6, 7 preferably comprise a detachable mechanical connection (for example snap in connections, clamping connections) that can be removed without using any tools.
More preferably, the first, second and/or third support frame structures 5, 6, 7 are modular support frame structures.
The respective signal distribution unit 10 can preferably also be mounted to the respective profile arrangement 7, 8, 9 without any screws and/or solder joints. This can be done by using a detachable mechanical connection (for example snap in connections, clamping connections) for example.
The respective signal distribution unit 10 can preferably also be mounted to the dual-polarized radiators 3a, 3b without any screws and/or solder joints. This can be done by using a detachable mechanical connection (for example snap in connections, clamping connections) for example.
In General, the mobile communication antenna 1 might comprise three different layers of dual-polarized radiators 3a, 3b, 3c, wherein all three layers are arranged on the first side 2a of the reflector arrangement 2. The first layer comprising the low band dual-polarized radiators 3a is furthest away from the reflector arrangement 2. The third layer comprising the high band dual-polarized radiators 3c is located closest to the reflector arrangement 2. The second layer comprising the mid band dual-polarized radiators 3b is located between the first layer and the third layer. One layer, two layers or all three layers can be present in the mobile communication antenna 1.
The high band dual-polarized radiators 3c preferably extend the least far in the longitudinal direction of the mobile communication antenna 1. The low band dual-polarized radiators 3a preferably extend furthest in the longitudinal direction of the mobile communication antenna 1. The mid band dual-polarized radiators 3b preferably extend further in the longitudinal direction of the mobile communication antenna 1 than the high band dual-polarized radiators 3c but preferably not as far as the low band dual-polarized radiators 3a.
Some of the embodiments contemplated herein are described more fully with reference to the accompanying drawings. Other embodiments, however, are contained within the scope of the subject matter disclosed herein. The disclosed subject matter should not be construed as limited to only the embodiments set forth herein; rather, these embodiments are provided by way of example to convey the scope of the subject matter to those skilled in the art.
The present invention may, of course, be carried out in other ways than those specifically set forth herein without departing from essential characteristics of the invention. The present embodiments are to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are intended to be embraced therein.
| Number | Date | Country | Kind |
|---|---|---|---|
| 20198575.1 | Sep 2020 | EP | regional |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2020/087677 | 12/22/2020 | WO |
