Patent Application
20240372257
The following description relates to a multiband diplexer and a broadband antenna including the multiband diplexer. Specifically, the following description relates to a multiband diplexer, which transmits and receives a dual band wireless signal by a single feed horn device and separates such a signal, and a broadband antenna including the multiband diplexer.
Polarization is a phenomenon in which an electric field vibrates in a certain direction in an electromagnetic wave, and the electric field may also rotate, besides vibrating in a one-dimensional linear direction. An electromagnetic wave is a type of wave that is propagated while an electric field and a magnetic field vibrate. The direction in which the electric field and the magnetic field vibrate is perpendicular to the traveling direction of the electromagnetic wave.
A polarizer is an electromagnetic passive element that responds to and absorbs only components that vibrate in the same direction in an incident electromagnetic wave and lets other components pass through.
An antenna is a device configured to transmit and receive a wave of a set band. Typically, a plurality of antennas is required to transmit and receive a plurality of waves each having a different band. However, using the plurality of antennas may increase space inefficiency and costs and cause difficulties in maintenance or repair. Accordingly, a single antenna including a plurality of transceivers each having a different band is being developed.
Korean Patent Publication No. 10-1757681 discloses a satellite communication antenna capable of receiving multiband signals. The antenna disclosed in the present application is configured to transmit and receive different bands by adjusting the orientation of a sub-reflecting board while a plurality of feed horns is installed fixedly in a main reflecting board.
The above description is information the inventor(s) acquired during the course of conceiving the present disclosure, or already possessed at the time, and was not necessarily publicly known before the present application was filed.
An aspect provides a multiband diplexer, which transmits and receives a dual band wireless signal by a single feed horn device and separates such a signal, for satellite communication and a broadband antenna including the multiband diplexer.
Another aspect also provides a multiband diplexer, which is positioned in the rear of a feed horn, includes crease elements, step elements, stepped elements, and protruding elements, and is configured to separate a dual band wireless signal and suppress a higher order mode by using a multiband diplexer, and a broadband antenna including the multiband diplexer.
The technical aspects obtainable from the present disclosure are non-limited by the above-mentioned technical aspects. And other unmentioned technical aspects can be clearly understood from the following description by those having ordinary skill in the technical field to which the present disclosure pertains.
According to an aspect, a multiband diplexer for an antenna to separate a multiband wireless signal includes a first signal passing unit connected to a side of a single feed horn of the antenna and configured to pass a first band signal and a second signal passing unit positioned coaxially with the first signal passing unit and configured to pass a second band signal, and the multiband diplexer is configured to separate the first band signal and the second band signal from a signal received by the single feed horn, in which at least one of the first signal passing unit and the second signal passing unit is configured to suppress a higher order mode.
The second signal passing unit may include a dielectric body and a second band signal higher order mode suppression member included in a front end of the dielectric body.
The second band signal higher order mode suppression member may include a plurality of crease elements, in which the plurality of crease elements has a height incremental from a front end to a rear end.
The second band signal higher order mode suppression member may further include a plurality of step elements positioned outside the plurality of crease elements and inside a circular waveguide.
The first signal passing unit may include a coaxial waveguide positioned coaxially around the second signal passing unit and a second band signal suppression member inside the coaxial waveguide.
The second band signal suppression member may include a plurality of stepped elements, in which the plurality of stepped elements protrudes from an outside of the coaxial waveguide to an inside of the coaxial waveguide and has a height decremental from a front end to a rear end.
The second band signal suppression member may include a plurality of protruding elements, in which the plurality of protruding elements is around the dielectric body and protrudes from an inside of the coaxial waveguide to an outside of the coaxial waveguide.
According to another aspect, a broadband antenna includes a reflecting board, a single feed horn positioned in a front end of the reflecting board, and a multiband diplexer connected to the single feed horn, in which the multiband diplexer includes a first signal passing unit connected to a side of the single feed horn and configured to pass a first band signal and a second signal passing unit positioned coaxially with the first signal passing unit and configured to pass a second band signal, and the multiband diplexer is configured to separate the first band signal and the second band signal from a signal received by the single feed horn and is positioned in a rear end of the reflecting board.
The second signal passing unit may include a dielectric body and a second band signal higher order mode suppression member included in a front end of the dielectric body and configured to suppress a higher order mode of the second band signal, in which the second band signal higher order mode suppression member may further include a plurality of crease elements and a plurality of step elements positioned outside the plurality of crease elements and inside a circular waveguide, in which the plurality of crease elements has a height incremental from a front end to a rear end.
The first signal passing unit may include a coaxial waveguide positioned coaxially around the second signal passing unit and a second band signal suppression member inside the coaxial waveguide and configured to suppress a higher order mode of the first band signal.
The second band signal suppression member may include a plurality of stepped elements and a plurality of protruding elements, in which the plurality of stepped elements protrudes from an outside of the coaxial waveguide to an inside of the coaxial waveguide and has a height decremental from a front end to a rear end, and the plurality of protruding elements is around the dielectric body and protrudes from an inside of the coaxial waveguide to an outside of the coaxial waveguide.
According to an aspect, there is provided a multiband diplexer, which transmits and receives a dual band wireless signal by a single feed horn device and separates such a signal, for satellite communication and a broadband antenna including the multiband diplexer.
According to another aspect, there is also provided a multiband diplexer, which is positioned in the rear of a feed horn, includes crease elements, step elements, stepped elements, protruding elements, and is configured to separate a dual band wireless signal and suppress a higher order mode by using a multiband diplexer, and a broadband antenna including the multiband diplexer.
The effects of a multiband diplexer and a broadband antenna including the multiband diplexer according to an embodiment may not be limited to the above-mentioned effects, and other unmentioned effects may be clearly understood from the following description by one of ordinary skill in the art.
The accompanying drawings illustrate preferred embodiments of the present invention and are provided together with the detailed description for better understanding of the technical idea of the present invention. Therefore, the present invention should not be construed as being limited to the embodiments set forth in the drawings.
Hereinafter, embodiments are described in detail with reference to the accompanying drawings. However, various alterations and modifications may be made to the embodiments. Here, the embodiments are not construed as limited to the disclosure. The embodiments should be understood to include all changes, equivalents, and replacements within the idea and the technical scope of the disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not to be limiting of the embodiments. The singular forms “a”, “an”, and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises/comprising” and/or “includes/including” when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof.
Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments belong. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
When describing the embodiments with reference to the accompanying drawings, like reference numerals refer to like constituent elements and a repeated description related thereto will be omitted. In the description of embodiments, detailed description of well-known related structures or functions will be omitted when it is deemed that such description will cause ambiguous interpretation of the present disclosure.
Also, in the description of the components, terms such as first, second, A, B, (a), (b) or the like may be used herein when describing components of the present disclosure. These terms are used only for the purpose of discriminating one constituent element from another constituent element, and the nature, the sequences, or the orders of the constituent elements are not limited by the terms. When one constituent element is described as being “connected”, “coupled”, or “attached” to another constituent element, it should be understood that one constituent element can be connected or attached directly to another constituent element, and an intervening constituent element can also be “connected”, “coupled”, or “attached” to the constituent elements.
The same name may be used to describe an element included in the embodiments described above and an element having a common function. Unless otherwise mentioned, the descriptions on the embodiments may be applicable to the following embodiments, and thus duplicated descriptions will be omitted for conciseness.
Referring to
The multiband diplexer 10 may also be referred to as a broadband orthogonal mode polarization separator and may separate the first band signal and the second band signal from a signal received by the single feed horn 300. In addition, at least one of the first signal passing unit 100 and the second signal passing unit 200 may be configured to suppress a higher order mode. Specifically, the single feed horn 300 may receive a multiband signal, and the multiband diplexer 10 may separate and process the received multiband signal. The broadband antenna 20 disclosed herein may be configured to transmit and receive Ku band and Ka band signals, and the multiband diplexer 10 may be configured to separate the Ku band and Ka band signals. The multiband diplexer 10 may be positioned in the rear of the reflecting board 400 such that the single feed horn 300 may be applied in various forms. The single feed horn 300 may be positioned in the front of the reflecting board 400. The single feed horn 300 and the multiband diplexer 10 may be spaced apart from each other at a certain distance, may be connected to each other through a pipe, and may each be positioned near the reflecting board 400.
As illustrated in
In addition, the second band signal higher order mode suppression member 220 may be positioned outside the plurality of crease elements 221 to 227 and may further include a plurality of step elements 230 positioned inside a circular waveguide 240. The plurality of step elements 230 may include a first step element 231, a second step element 232, and a third step element 233. The plurality of step elements 230 may be positioned to surround the plurality of crease elements 221 to 227 and may be positioned on the circular waveguide 240. Each of the first, second, and third step elements 231 to 233 may be set to have a different height. The first step element 231 and the third step element 233 may have similar heights, and the second step element 232 may be between the first step element 231 and the third step element 233 and may have a lower height than the heights of the first step element 231 and the third step element 233. In this case, the height stated above may be a height of a side viewed from an axis, and a lower height may be construed as a greater diameter of a groove (a hollow space). Accordingly, the second signal passing unit 200 may pass the Ka band signal (the second band signal) and suppress a Ka band signal higher order mode.
Referring to
In addition, the second band signal suppression member 110 may include the plurality of protruding elements 1120, and the plurality of protruding elements 1120 may be around the dielectric body 210 and may protrude from the inside to outside of the coaxial waveguide 120. Specifically, the plurality of protruding elements 1120 may include a first protruding element 1121, a second protruding element 1122, a third protruding element 1123, a fourth protruding element 1124, a fifth protruding element 1125, and a sixth protruding element 1126. The first protruding element 1121 may be within the length of the choke member, the second protruding element 1122 may be within the length of the first stepped element 1111, the third protruding element 1123 and the fourth protruding element 1124 may be within the second stepped element 1112, and the fifth protruding element 1125 and the sixth protruding element 1126 may be within the length of the third stepped element 1113. The height (or diameter) of each protruding element may be different and may vary depending on the purpose of the design. In addition, the number of protruding elements is not limited to the number of the plurality of protruding elements 1120 and may be changed, and the length, thickness, or shape of protruding elements may also vary depending on the designs. Accordingly, the first signal passing unit 100 may pass the Ku band signal (the first band signal) and suppress a Ka band signal (a basic mode or a higher order mode) or other unnecessary signals.
Referring to
Accordingly, the multiband diplexer 10 and the broadband antenna 20 including the multiband diplexer 10 may transmit and receive a dual band wireless signal by the single feed horn 300 and separate such a signal for satellite communication.
In addition, the multiband diplexer 10 and the broadband antenna 20 including the multiband diplexer 10 may separate a dual band wireless signal and suppress a higher order mode by using the multiband diplexer 10 positioned in the rear of the single feed horn 300 and including the plurality of crease elements 221 to 227, the plurality of step elements 230, the plurality of stepped elements 1110, and the plurality of protruding elements 1120.
A number of embodiments have been described above. Nevertheless, it should be understood that various modifications may be made to these embodiments. Suitable results may be achieved if the described techniques are performed in a different order, and/or if components in a described system, architecture, device, or circuit are combined in a different manner, and/or replaced or supplemented by other components or their equivalents.
Accordingly, other implementations are within the scope of the following claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2021-0109516 | Aug 2021 | KR | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/KR2022/008079 | 6/8/2022 | WO |
