CN210692758U - Antenna with integrated filter - Google Patents
Antenna with integrated filter Download PDFInfo
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- CN210692758U CN210692758U CN201922102384.9U CN201922102384U CN210692758U CN 210692758 U CN210692758 U CN 210692758U CN 201922102384 U CN201922102384 U CN 201922102384U CN 210692758 U CN210692758 U CN 210692758U
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Abstract
The utility model discloses an integrated filter's antenna, this integrated filter's antenna include radiating element, feed network board and cavity filter, and feed network board locates radiating element's bottom and links to each other with radiating element, and cavity filter locates feed network board's bottom and links to each other with feed network board, and cavity filter is equipped with the first metal covering that sets up towards feed network board, and first metal covering is as radiating element's plane of reflection. The antenna of the integrated filter can effectively save cable jumpers and joints between the antenna and the filter, greatly reduce the installation difficulty of the antenna of the integrated filter, and is favorable for reducing loss.
Description
Technical Field
The utility model relates to the field of communication technology, especially, relate to an integrated filter's antenna.
Background
In the field of small active equipment coverage, hereinafter referred to as a micro-station for short, an antenna, a filter and active equipment are produced, installed and used separately for a long time, each component realizes own functions, and particularly, the filter and the antenna are connected by a cable jumper wire through a joint to be respectively waterproof. And as the application frequency is increased, the number of ports is increased, so that the installation and combination are more difficult.
SUMMERY OF THE UTILITY MODEL
Based on this, there is a need to provide an antenna with integrated filters. The antenna of the integrated filter can effectively save cable jumpers and joints between the antenna and the filter, greatly reduce the installation difficulty of the antenna of the integrated filter, and is favorable for reducing loss.
The technical scheme is as follows:
on one hand, the application provides an antenna of an integrated filter, including a radiation unit, a feed network board and a cavity filter, the feed network board is arranged at the bottom of the radiation unit and connected with the radiation unit, the cavity filter is arranged at the bottom of the feed network board and connected with the feed network board, the cavity filter is provided with a first metal surface facing the feed network board, and the first metal surface is used as a reflection surface of the radiation unit.
When the antenna of the integrated filter is used, the feed network board is fixed on the first metal surface of the cavity filter, and then the radiation unit is installed at the preset position of the feed network board, so that the first metal surface can be used as the reflection surface of the radiation unit, the connection between the cavity filter and the radiation unit is realized through the feed network board, and the assembly of the micro-station antenna can be completed. Compared with the prior art, the antenna of the integrated filter can effectively save cable jumpers and connectors between the antenna and the filter, and greatly reduces the installation difficulty.
The technical solution is further explained below:
in one embodiment, the cavity filter is further provided with a sidewall protruding from the first metal face, the sidewall being provided with a second metal face, the second metal face serving as a reflective boundary.
In one embodiment, the cavity filter is a metal cavity filter.
In one embodiment, the filter-integrated antenna further includes a radome, which is matched with the first metal surface and used for covering the radiation unit.
In one embodiment, the cavity filter includes a cavity, a resonant column, a cover plate, and a tuning element, the cavity is a hollow structure with an opening on one side, a plurality of resonant cavities are disposed in the cavity, the resonant column is disposed in the resonant cavity, the cover plate covers the opening of the cavity, the tuning element is telescopically disposed on the cover plate, and the first metal surface is disposed on an outer wall of the cavity corresponding to the cover plate.
In one embodiment, the feeding network board further includes an insulating dielectric board and a feeding line layer printed on the insulating dielectric board.
In one embodiment, the insulating dielectric plate is provided with a mounting hole for mounting the radiation unit, the mounting hole is a metal via hole, and the feed line layer is electrically connected with the radiation unit line layer through the metal via hole.
In one embodiment, the insulating dielectric plate is provided with a second mounting hole, and the second mounting hole is a metal through hole; the cavity filter is provided with a conductive protrusion electrically connected with the second mounting hole.
In one embodiment, the insulating dielectric plate is provided with a power divider circuit layer, and the radiation unit is electrically connected with the corresponding power divider circuit layer.
In one embodiment, the number of the radiation units is at least two, and the radiation units are arranged in an antenna array; at least one row of the antenna arrays is arranged on the first metal surface.
Antenna of integrated filter antenna
Drawings
Fig. 1 is a schematic structural diagram of an antenna of an integrated filter in an embodiment;
fig. 2 is a schematic diagram of the antenna of the integrated filter shown in fig. 1 from another view angle;
FIG. 3 is an enlarged view of part A shown in FIG. 1;
fig. 4 is an exploded view of the structure of the antenna of the integrated filter shown in fig. 1;
fig. 5 is a partially enlarged schematic view of B shown in fig. 4.
Description of reference numerals:
100. a cavity filter; 110. a first metal face; 112. a third mounting hole; 120. a second metal face; 130. a conductive bump; 140. a cover plate; 150. a tuning element; 200. a feed network board; 210. an insulating dielectric sheet; 212. a first mounting hole; 220. a feeder line layer; 230. a power divider circuit layer; 300. a radiation unit; 400. a radome.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "secured to," "disposed on," "secured to," or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is perpendicular or nearly perpendicular to another element, it is desirable that the two elements are perpendicular, but some vertical error may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The references to "first" and "second" in the present invention do not denote any particular quantity or order, but rather are merely used to distinguish one name from another.
In the field of small antennas, filters, small active devices are generally combined to form a complete coverage device. With the increase of the frequency band of the antenna and the increase of the number of ports, it is more and more difficult to arrange a plurality of joints in a smaller and smaller space. Based on this, the application provides an integrated filter's antenna, can adapt to the antenna frequency channel and increase and accomplish the installation in narrow space.
As shown in fig. 1 to 4, the present application provides an antenna with an integrated filter, including a radiation unit 300, a feeding network board 200 and a cavity filter 100, wherein the feeding network board 200 is disposed at the bottom of the radiation unit 300 and connected to the radiation unit 300, the cavity filter 100 is disposed at the bottom of the feeding network board 200 and connected to the feeding network board 200, the cavity filter 100 is provided with a first metal surface 110 disposed toward the feeding network board 200, and the first metal surface 110 serves as a reflection surface of the radiation unit 300.
When the antenna of the integrated filter is used, the feed network board 200 is fixed on the first metal surface 110 of the cavity filter 100, and then the radiation unit 300 is installed at a preset position of the feed network board 200, so that the first metal surface 110 can be used as a reflection surface of the radiation unit 300, and the feed network board 200 is used for connecting the cavity filter 100 and the radiation unit 300, and then the assembly of the micro-station antenna can be completed. Compared with the prior art, the antenna of the integrated filter can effectively save cable jumpers and joints between the antenna and the filter, greatly reduce the installation difficulty, can be installed in a narrow space, can adapt to the problem of complex feed lines caused by the increase of the frequency bands of the antenna, is favorable for reducing the loss, and improves the reliability of signal radiation.
It should be noted that the feeding unit on the feeding network board 200 may be a conductive layer on a circuit board, or may be implemented by using a simple coaxial feeding manner such as a pin.
On the basis of the above embodiments, as shown in fig. 1 to 3, in an embodiment, the filter-integrated antenna further includes a radome 400, and the radome 400 is matched with the first metal surface 110 for covering the radiation unit 300. Thus, the radome 400 and the first metal surface 110 form a protection cavity of the radiation unit 300, and the feed unit is also disposed in the protection cavity, so that waterproof measures are easily taken.
Further, in one embodiment, the radome 400 is sleeve-fitted with the cavity filter 100 and forms a protective cavity. Thus, better waterproof performance is facilitated.
Further, as shown in fig. 1, in an embodiment, the first metal surface 110 is provided with a third mounting hole 112, and the radome 400 is provided with a threaded hole corresponding to the third mounting hole 112. The fixing of the radome 400 and the cavity filter 100 can be achieved by the bolts passing through the connection holes 112 and being engaged with the threaded holes.
In addition to any of the above embodiments, as shown in fig. 4, in an embodiment, the cavity filter 100 further has a sidewall protruding from the first metal plane 110, the sidewall has a second metal plane 120, and the second metal plane 120 serves as a reflective boundary. In this manner, a reflective boundary may also be formed on the cavity filter 100 to further optimize the antenna of the integrated filter.
Based on any of the above embodiments, in an embodiment, the cavity filter 100 is a metal cavity filter 100. Thus, the first metal surface 110 and the second metal surface 120 can be directly processed on the cavity of the cavity filter 100, and the assembly efficiency is improved.
Of course, in other embodiments, the first metal surface 110 and the second metal surface 120 may be mounted on the cavity filter 100, such as printed or plated on the outer surface of the cavity filter 100.
On the basis of any of the above embodiments, as shown in fig. 2, in an embodiment, the cavity filter 100 includes a cavity (not labeled), a resonant pillar (not shown), a cover plate 140, and a tuning element 150, where the cavity is a hollow structure with an opening on one side, a plurality of resonant cavities are disposed in the cavity, the resonant pillar is disposed in the resonant cavity, the cover plate 140 covers the opening of the cavity, the tuning element 150 is telescopically disposed on the cover plate 140, and the first metal surface 110 is disposed on an outer wall of the cavity corresponding to the cover plate 140. In this way, the tuning element 150 can be used to perform index tuning of the filter, so that tuning of the antenna of the integrated filter is easier; meanwhile, the interference problem between the radiation unit 300 and the filter can be reduced, so that the antenna performance is better.
Further, in one embodiment, cover plate 140 is provided with a threaded through hole (not shown) and tuning element 150 is provided with a threaded rod that mates with the threaded hole. Thus, by the cooperation of the screw and the threaded through hole, the instant-stop telescopic operation of the tuning element 150 is realized.
On the basis of any of the above embodiments, as shown in fig. 3 and fig. 4, in an embodiment, the feeding network board 200 further includes an insulating dielectric board 210 and a feeding line layer 220 printed on the insulating dielectric board 210.
Further, as shown in fig. 4 and 5, in an embodiment, the insulating dielectric board 210 is provided with a first mounting hole 212 for mounting the radiating element 300, the mounting hole is a metal via, and the feeding line layer 220 is electrically connected to the line layer of the radiating element 300 through the metal via. Thus, the first mounting hole 212 is utilized to facilitate fixing the radiating element 300 on the insulating dielectric plate 210, and at the same time, the feeder circuit layer 220 is electrically connected to the radiating element 300, which is beneficial to further reducing insertion loss.
Further, as shown in fig. 5, in an embodiment, the insulating dielectric plate 210 is provided with a second mounting hole (not shown), and the second mounting hole is a metal via; the cavity filter 100 is provided with a conductive protrusion 130 electrically connected to the second mounting hole. Thus, the direct electrical connection between the cavity filter 100 and the feeder circuit layer 220 is realized through the electrical connection between the second mounting hole and the conductive bump 130, so that the number of cables is further reduced, the insertion loss is reduced, and intermodulation is facilitated.
The conductive bumps 130 are metal connecting posts, etc.
Based on any of the above embodiments, as shown in fig. 3, in an embodiment, the insulating dielectric plate 210 is provided with a power divider circuit layer 230, and the radiation unit 300 is electrically connected to the corresponding power divider circuit layer 230. Therefore, cable jumpers and joints between the radiation unit 300 and the filter can be effectively saved, connection loss is reduced, and antenna gain is improved.
Further, in an embodiment, the power divider is provided with a pad (not shown) and a connection hole (not shown) disposed on the pad, and the radiation unit 300 can be inserted into the connection hole through the feeding post, so that the power divider and the radiation unit 300 can be electrically connected by means of soldering.
Of course, the feeding unit and the cavity filter 100 may be electrically connected in the above manner.
On the basis of any of the above embodiments, as shown in fig. 1, in one embodiment, at least two radiation units 300 are arranged in an antenna array; at least one row of antenna arrays is disposed on the first metal surface 110. In this way, the antenna array can be formed on the first metal surface 110, and the antenna of the antenna integrated filter of the antenna of the multiband integrated filter can be realized.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. An antenna integrated with a filter, comprising:
a radiation unit;
the feed network board is arranged at the bottom of the radiation unit and connected with the radiation unit;
the cavity filter is arranged at the bottom of the feed network board and connected with the feed network board, and is provided with a first metal surface arranged towards the feed network board, and the first metal surface is used as a reflecting surface of the radiation unit.
2. The filter-integrated antenna according to claim 1, wherein the cavity filter is further provided with a side wall provided to protrude from the first metal face, the side wall being provided with a second metal face, the second metal face serving as a reflection boundary.
3. The filter-integrated antenna of claim 1, wherein the cavity filter is a metal cavity filter.
4. The filter-integrated antenna according to claim 1, further comprising a radome cooperating with the first metal surface for housing the radiating element.
5. The filter-integrated antenna of claim 1, wherein the cavity filter comprises:
the cavity is a hollow structure with an opening at one side, and a plurality of resonant cavities are arranged in the cavity;
the resonant column is arranged in the resonant cavity;
the cover plate is arranged at the opening of the cavity in a covering manner;
the tuning piece is arranged on the cover plate in a telescopic manner;
the first metal surface is arranged on the outer wall of the cavity corresponding to the cover plate.
6. The filter-integrated antenna according to claim 1, wherein the feeding network board further comprises an insulating dielectric board and a feeding line layer printed on the insulating dielectric board.
7. The filter-integrated antenna according to claim 6, wherein the insulating dielectric plate is provided with a first mounting hole for mounting the radiating element, the first mounting hole is a metal via hole, and the feeding line layer is electrically connected to the radiating element line layer through the first mounting hole.
8. The filter-integrated antenna according to claim 6, wherein the insulating dielectric plate is provided with a second mounting hole, and the second mounting hole is a metal via hole; the cavity filter is provided with a conductive protrusion electrically connected with the second mounting hole.
9. The filter-integrated antenna according to claim 6, wherein the insulating dielectric plate is provided with a power divider circuit layer, and the radiating element is electrically connected to the corresponding power divider circuit layer.
10. The filter-integrated antenna according to any one of claims 1 to 9, wherein the number of the radiating elements is at least two, and the radiating elements are arranged as an antenna array; at least one row of the antenna arrays is arranged on the first metal surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922102384.9U CN210692758U (en) | 2019-11-29 | 2019-11-29 | Antenna with integrated filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922102384.9U CN210692758U (en) | 2019-11-29 | 2019-11-29 | Antenna with integrated filter |
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| Publication Number | Publication Date |
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| CN210692758U true CN210692758U (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922102384.9U Active CN210692758U (en) | 2019-11-29 | 2019-11-29 | Antenna with integrated filter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110911837A (en) * | 2019-11-29 | 2020-03-24 | 京信通信技术(广州)有限公司 | Antenna with integrated filter |
| CN111710968A (en) * | 2020-07-16 | 2020-09-25 | 北京邮电大学 | Millimeter wave differential filtering double-patch antenna based on coupling power divider feed |
| CN113241521A (en) * | 2021-03-22 | 2021-08-10 | 广东通宇通讯股份有限公司 | Active communication antenna, base station and communication system |
| WO2022267822A1 (en) * | 2021-06-21 | 2022-12-29 | 中兴通讯股份有限公司 | Antenna module, radio frequency device, and base station |
-
2019
- 2019-11-29 CN CN201922102384.9U patent/CN210692758U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110911837A (en) * | 2019-11-29 | 2020-03-24 | 京信通信技术(广州)有限公司 | Antenna with integrated filter |
| WO2021103762A1 (en) * | 2019-11-29 | 2021-06-03 | 京信通信技术(广州)有限公司 | Antenna having integrated filter |
| CN111710968A (en) * | 2020-07-16 | 2020-09-25 | 北京邮电大学 | Millimeter wave differential filtering double-patch antenna based on coupling power divider feed |
| CN113241521A (en) * | 2021-03-22 | 2021-08-10 | 广东通宇通讯股份有限公司 | Active communication antenna, base station and communication system |
| WO2022267822A1 (en) * | 2021-06-21 | 2022-12-29 | 中兴通讯股份有限公司 | Antenna module, radio frequency device, and base station |
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