The present disclosure relates to the field of antenna, in particular to an antenna and a wireless communication device using the same.
With the popularity of wireless devices, wireless devices are becoming smaller and smaller. Therefore, an antenna must not only fit within small wireless devices, but also have a wide bandwidth to support multiple working bands. Together, these two considerations are problematic.
Therefore, improvement is desired.
The embodiment of the present disclosure provides an antenna with small size and ability to support multiple working frequency bands and a wireless communication device with the antenna.
The present disclosure provides an antenna, the antenna includes a dielectric substrate, a first radiation unit, a second radiation unit, and a feed portion. The dielectric substrate includes a first surface and a second surface. The first radiation unit is arranged on the first surface. The second radiation unit extends from the second surface to the first surface, wherein the second radiation unit comprises a ground portion and a first radiation portion, a part of the second radiation unit arranged on the first surface is used as the first radiation portion, another part of the second radiation unit arrange on the first surface is used as the ground portion, and the first radiation portion and the first radiation unit are adjacent and spaced. The feed portion is configured to feed current to the first radiation unit, the first radiation unit excites a first radiation frequency band, the current flowing through the first radiation unit is further coupled and fed into the first radiation portion, and the first radiation portion excites a second radiation frequency band.
In some embodiments, the first surface deviates from the second surface, and the first radiation unit comprises a second radiation portion and a third radiation portion, the second radiation portion is connected to the third radiation portion, the second radiation portion is a right-angled trapezoid, and the third radiation portion is rectangular, a length of a bottom edge of the second radiation portion is less than a length of the third radiation portion, a right-angle side edge of the second radiation portion is flush with one end of the third radiation portion, the first radiation portion and the second radiation portion are arranged at relative intervals, and the feed portion is connected to the second radiation portion.
In some embodiments, the first radiation portion is rectangular, and the first radiation portion is parallel to the third radiation portion.
In some embodiments, the ground portion comprises a first ground portion and a second ground portion, and the first ground portion is vertically connected to the second ground portion, the first ground portion is arranged close to the right-angle side edge of the second radiation portion, and the first ground portion is parallel to the right-angle side edge of the second radiation portion; the second ground portion is arranged at one end of the second surface away from the first radiation unit.
In some embodiments, the second ground portion is parallel to the third radiation portion, and the second ground portion is connected to the first radiation portion.
In some embodiments, the first ground portion and the second ground portion are rectangular.
In some embodiments, a dielectric coefficient of the dielectric substrate is 9.8.
In some embodiments, the first radiation frequency band comprises 5.15 GHz to 7.125 GHz, and the second radiation frequency band comprises 2.4 GHz to 2.5 GHz.
In some embodiments, a projected area of the ground portion on the second surface along a thickness direction of the antenna does not overlap a projected area of the first radiation unit on the second surface along the thickness direction of the antenna.
In some embodiments, the dielectric substrate is an alumina and ceramic substrate.
The present disclosure further provides a wireless communication device, which includes the plurality of antennas as described above.
In the present disclosure, the first radiation unit and the second radiation unit are arranged on the dielectric substrate, and the second radiation unit extends from the second surface to the first surface to form the first radiation portion and the ground portion on the second radiation unit; the first radiation unit receives the current fed by the feed portion to excite the first radiation frequency band, and the first radiation portion is coupled to the first radiation unit on the first surface to excite the second radiation frequency band. The antenna provided in the present disclosure is not only miniaturized, but also provides the ground portion of the antenna without more feeding portions requiring to be set. Thus multiple working frequency bands are stimulated, and the antenna provides broadband connections.
The technical solutions in the embodiments of the present disclosure will be described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of them. Based on the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.
It should be noted that when an element is described as “electrically connecting” to another element, it can be directly on another component or there can be a centered element. When an element is said to be “electrically connected” to another element, it can be a contact connection, for example, a wire connection, or a non-contact connection, for example, a wireless coupling.
The terms used in the description of the present disclosure herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term “and/or” as used herein includes any and all combinations of one or more related listed items.
With the popularity of wireless devices, the size of wireless devices is becoming smaller and smaller. Therefore, an antenna needs to be used in small wireless devices, but also needs to provide a wide bandwidth to support multiple working bands.
The antenna 100 can be applied to a customer premises equipment (CPE), a router, a set top box, a mobile phone, a laptop and other wireless communication devices (not shown in the figure) to transmit and receive radio waves to transmit and exchange radio signals.
In some embodiments, the antenna 100 includes a dielectric substrate 10, a first radiation unit 20, a second radiation unit 30, and a feed portion 40.
The dielectric substrate 10 includes a first surface 11 and a second surface 12.
The first radiation unit 20 is arranged on the first surface 11. The second radiation unit 30 extends from the second surface 12 to the first surface 11. The second radiation unit 30 includes a first radiation portion 31 and a ground portion 32. The part of the second radiation unit 30 is arranged on the first surface 11 as the first radiation portion 31. The other parts of the second radiation unit 30 except those arranged on the first surface 11 serves as the ground portion 32. The first radiation portion 31 is adjacent to the first radiation unit 20 at intervals.
The feed portion 40 is used to feed current to the first radiation unit 20, so that the first radiation unit 20 can excite a first radiation frequency band. The current flowing through the first radiation unit 20 is also coupled and fed to the first radiation portion 31 so that the first radiation portion 31 can excite a second radiation frequency band. In some embodiments, the feed portion 40 may be a microstrip line or other metal conductor connected to the feed line.
In the present disclosure, the first radiation unit 20 and the second radiation unit 30 are arranged on the dielectric substrate 10, and the second radiation unit 30 extends from the second surface 12 to the first surface 11 to form the first radiation portion 31 and the ground portion 32 on the second radiation unit 30; the first radiation unit 20 receives the current fed by the feed portion 40 to excite the first radiation frequency band, and the first radiation portion 31 is coupled to the first radiation unit 20 on the first surface 11 to excite the second radiation frequency band. The antenna 100 provided in the present disclosure not only realizes miniaturization, but also provides the ground portion 32 of the antenna 100 without setting more feeding portions, which can stimulate multiple working frequency bands for broadband.
In some embodiments, the first radiation unit 20 includes a second radiation portion 21 and a third radiation portion 22. The second radiation portion 21 is connected to the third radiation portion 22. The second radiation portion 21 is a right-angle trapezoid, and the third radiation portion 22 is rectangular. The right-angle side edge of the second radiation portion 21 is flush with one end of the third radiation portion 22. The feed portion 40 is connected to the second radiation portion 21. In this way, through the above design, the first radiation frequency band is excited by the second radiation portion 21 and the third radiation portion 22 jointly.
The first radiation portion 31 is parallel to the third radiation portion 22. The first radiation portion 31 and the second radiation portion 21 are arranged at relative intervals. Therefore, when the feed portion 40 feeds the current to the second radiation portion 21, the second radiation portion 21 also couples the current to the first radiation portion 31, so that the first radiation portion 31 can excite the second radiation frequency band.
Referring to
In the embodiment, the width WE of the third radiation portion 22 is 3.5 mm. The length LS of the other bottom edge of the second radiation portion 21 is 6 mm. The length of the right-angle side edge of the second radiation portion 21 is 10.4 mm. The distance WS from the end of the second radiation portion 21 away from the third radiation portion 22 to the feed portion 40 is 3 mm. The distance WB from the end of the second radiation portion 21 close to the third radiation portion 22 to the feed portion 40 is 5.6 mm. The width WT of the feed portion 40 is 1.8 mm. The length WE of the feed portion 40 is 3.5 mm. The length LN3 of the first radiation portion 31 is 12 mm. The width WN of the first radiation portion 31 is 2.5 mm.
Referring to
The second ground portion 322 is arranged on the end of the second surface 12 far away from the first radiation unit 20. The second ground portion 322 is parallel to the third radiation portion 22, and the second ground portion 322 is connected to the first radiation portion 31.
In the embodiment, the first ground portion 321 and the second ground portion 322 are rectangular. The first ground portion 321 is aligned with the second surface 12 close to the right-angle side edge of the second radiation portion 21. The second ground portion 322 is aligned with the second surface 12 close to the edge of the second radiation portion 21, and the second ground portion 322 is vertically connected to the first ground portion 321. The length WA of the first ground portion 321 is the same as the width of the dielectric substrate 10, both of which are 20 mm. The width LG of the first ground portion 321 is 5 mm, which is less than the distance from the right-angle side edge of the second radiation portion 21 to the edge of the adjacent second surface 12. The length LN1 of the second ground portion 322 is 15 mm. The width WN of the second ground portion 322 is 2.5 mm (shown in
The first radiation portion 31 is formed by extending one end of the second ground portion 322 away from the first ground portion 321 to the first surface 11. Therefore, the first radiation portion 31 is aligned with the edge on the first surface 11 away from the third radiation portion 22. In the embodiment of the present disclosure, the width of the first radiation portion 31 is the same as the width WN of the second ground portion 322, both of which are 2.5 mm. The length LN3 of the first radiation portion 31 is 12 mm.
Referring to
The present disclosure does not limit the position of the first surface 11 and the second surface 12 on the dielectric substrate 10, as long as the first surface 11 and the second surface 12 are not on the same surface. Therefore, the area of the dielectric substrate 10 can be reduced to achieve miniaturization of the antenna 100 as much as possible. In the embodiment of the present disclosure, the first surface 11 and the second surface 12 are two surfaces that deviate from each other on the dielectric substrate 10. For example, the first surface 11 and the second surface 12 are the upper surface and the lower surface of the dielectric substrate 10, respectively. Therefore, the required area and volume of the dielectric substrate 10 can be further reduced, allowing a reduction in size of the antenna 100. In other embodiments, the first surface 11 and the second surface 12 may also be two adjacent or spaced surfaces on the dielectric substrate 10.
The present disclosure does not limit the size and shape of the dielectric substrate 10. In other embodiments, the dielectric substrate 10 may also have other shapes. When in different shapes, each part of the first radiation unit 20 and the second radiation unit 30 does not need to be arranged at the edge of the dielectric substrate 10, the first radiation unit 20 and the second radiation unit 30 can still together realize the required functions.
The antenna 100 provided in the disclosure can be applied to a variety of Wi-Fi standards such as Wi-Fi 4 (the frequency band covering 2.4 GHz-2.5 GHz), Wi-Fi 5 (the frequency band covering 2.4 GHz-2.5 GHz and 5.15 GHz-5.85 GHz), Wi-Fi 6 (the frequency band covering 2.4 GHz-2.5 GHz and 5 GHz), and Wi-Fi 7 (the frequency band covering 2.4 GHz-2.5 GHz, 5 GHz and 5.925 GHz-7.125 GHz). In theory, Wi-Fi 7 standard can support the bandwidth of up to 30 Gbps for each access point, and the maximum network speed of Wi-Fi 7 can reach 46.4 Gbps. Therefore, the antenna 100 provided in the disclosure meets current requirements relating to development trends of Wi-Fi technology and enables the wireless communication device equipped with the antenna 100 to have a faster network speed while reducing the number of antennas.
The antenna 100 of the present disclosure can extend from the second surface 12 of the dielectric substrate 10 to the first surface 11 through the second radiation unit 30, the first radiation portion 31 and the ground portion 32 are constructed on the second radiation unit 30; the present disclosure also disposes the first radiation unit 20 on the first surface 11 of the dielectric substrate 10, and the first radiation unit 20 receives the current fed by the feed portion 40 to excite the first radiation frequency band. The first radiation portion 31 is coupled to the first radiation unit 20 on the first surface 11 to excite the second radiation frequency band, thus realizing miniaturization broadband performance. The antenna 100 provided in the present disclosure can be applied to various Wi-Fi standards, especially Wi-Fi 7, so that the wireless communication device with the antenna 100 can have a faster network speed while reducing the number of antennas required.
Those of ordinary skill in the art should realize that the above embodiments are only used to illustrate the present disclosure, but not to limit the present disclosure. As long as they are within the essential spirit of the present disclosure, the above embodiments are appropriately made and changes fall within the scope of protection of the present disclosure.
Number | Date | Country | Kind |
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202211357858.4 | Nov 2022 | CN | national |