CN210692765U - Phase-shift feeding device, radiation array and large-scale array antenna - Google Patents
Phase-shift feeding device, radiation array and large-scale array antenna Download PDFInfo
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- CN210692765U CN210692765U CN201921926526.7U CN201921926526U CN210692765U CN 210692765 U CN210692765 U CN 210692765U CN 201921926526 U CN201921926526 U CN 201921926526U CN 210692765 U CN210692765 U CN 210692765U
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Abstract
The utility model relates to a move feeder, radiation array and extensive array antenna phase. Through welding, the metal cavity and the feeder circuit layer are arranged in common, and the phase-shift circuit layer and the feeder circuit layer are connected in series. Therefore, the feed network component and the phase shift component can be integrated on the basis of not adopting a coaxial feed line. In addition, the metal cavity and the phase shift circuit layer are positioned on one side of the substrate, which is back to the feed circuit layer. That is, the integration of the phase shift module does not occupy the wiring space of the feeding line layer, so the size of the substrate is not increased due to the arrangement of the phase shift module. Obviously, when the phase-shifting feeding device is applied to the large-scale array antenna, the size is reduced, the structure is simplified, and the miniaturization of the large-scale array antenna is realized.
Description
Technical Field
The utility model relates to a wireless communication technology field, in particular to move feeder, radiation array and extensive array antenna mutually.
Background
With the development of mobile communication, large-scale array (Massive MIMO) antennas are receiving more and more attention due to their advantages of flexible and adjustable beam, high gain, and the like. Common large-scale array antennas are 32, 64 or even 128 rf channels. Signals with different amplitudes and phases are fed into a plurality of radio frequency channels of the antenna respectively, so that flexible adjustment of antenna coverage beams is realized.
At present, the phase shifter and the feed network are organically combined, and the phase shifter is mechanically dragged to enable each radiating unit of the antenna or the combination of the radiating units to obtain differential phase adjustment, so that flexible adjustment of antenna beams can be realized. However, the phase shifter has a large volume, and the connection between the phase shifter and the feed network is mostly formed by welding radio frequency cables, so that the phase shifter is not easily integrated in a large-scale array antenna, and thus it is difficult to achieve miniaturization and light weight of the large-scale array antenna.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide a phase-shift feeding device, a radiation array and a large-scale array antenna which are advantageous for miniaturization.
A phase shifting feed apparatus comprising:
the feed network component comprises a substrate, a ground layer formed on one side of the substrate and a feed circuit layer formed on the other side of the substrate, wherein the feed circuit layer is provided with a radio frequency inlet and a plurality of radio frequency outlets; and
the phase-shifting assembly comprises a metal cavity, a phase-shifting circuit layer and a phase-shifting operation piece, wherein the phase-shifting circuit layer and the phase-shifting operation piece are accommodated in the metal cavity;
the metal cavity is attached to one side of the substrate, where the ground layer is arranged, and is welded to the ground layer, and the input end and the output end are respectively welded to the feed line layer, so that the phase shift circuit layer is connected in series in the feed line layer.
In one embodiment, a planar pad electrically connected with the ground layer is formed on one side of the substrate facing away from the feeder circuit layer, and the metal cavity is attached to the surface of the planar pad and welded.
In one embodiment, the substrate is provided with a slot type pad, the slot type pad is insulated from the ground layer and electrically connected to the feeding line layer, and the input end and the output end are inserted into the slot type pad and soldered.
In one embodiment, the substrate includes a plurality of sub-boards spliced with each other, and the input end and the output end of the same phase shift circuit layer are respectively inserted into the slot-in type bonding pads of two adjacent sub-boards.
In one embodiment, a connection pad is respectively arranged at a position of the substrate corresponding to each radio frequency outlet.
In one embodiment, the feeding network component further includes a radio frequency connector, and the radio frequency connector is disposed on a side of the substrate facing away from the feeding line layer and electrically connected to the radio frequency inlet.
In one embodiment, an opening is formed on a side wall of the metal cavity facing the substrate, and the substrate covers the opening.
In one embodiment, the phase shift operating element is a dielectric plate, the dielectric plate is partially accommodated in the metal cavity and is arranged opposite to the phase shift circuit layer, and the other part of the dielectric plate extends out of the metal cavity.
In one embodiment, the feeder circuit layer includes a plurality of power dividers connected in series, each of the phase shift circuit layers has a plurality of output terminals, and the output terminals are electrically connected to the power dividers respectively.
A radiating array, comprising:
the phase-shift power feeding apparatus according to any one of the above-described preferred embodiments; and
and the plurality of radiation units are attached to one side of the substrate, which faces away from the phase-shifting assembly, and are respectively welded with the plurality of radio frequency outlets.
A massive array antenna, comprising:
a radiating array as described in the preferred embodiments above; and
and the transmission device is positioned on one side of the substrate, which is back to the radiation unit, and is in transmission connection with the phase-shifting operation assembly.
In one embodiment, the radiation source further comprises a reflecting plate, the radiation array is arranged on one side of the reflecting plate, and the transmission device is arranged on the other side of the reflecting plate.
In one embodiment, the reflecting plate is provided with a position-avoiding hole, and the metal cavity is located in the position-avoiding hole.
The phase-shifting feed device is characterized in that the metal cavity and the feed line layer are arranged in a common ground mode through welding, and the phase-shifting circuit layer is connected with the feed line layer in series. Therefore, the feed network component and the phase shift component can be integrated on the basis of not adopting a coaxial feed line. In addition, the metal cavity and the phase shift circuit layer are positioned on one side of the substrate, which is back to the feed circuit layer. That is, the integration of the phase shift module does not occupy the wiring space of the feeding line layer, so the size of the substrate is not increased due to the arrangement of the phase shift module. Obviously, when the phase-shifting feeding device is applied to the large-scale array antenna, the size is reduced, the structure is simplified, and the miniaturization of the large-scale array antenna is realized.
Drawings
Fig. 1 is a schematic structural diagram of a large-scale array antenna according to a preferred embodiment of the present invention;
fig. 2 is a schematic front view of a phase-shifting feeding device in the large-scale array antenna shown in fig. 1;
FIG. 3 is a schematic diagram of a back side structure of the phase-shifting feeding device in the large-scale array antenna shown in FIG. 1;
FIG. 4 is a schematic diagram of a phase shifting element of the phase shifting feed apparatus shown in FIG. 2;
fig. 5 is a simplified equivalent circuit schematic of the phase-shifting feed arrangement of fig. 2.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" 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. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
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 in the description of the invention herein 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.
Referring to fig. 1, the present invention provides a large-scale array antenna 10 and a phase-shift feeding device 100. The large-scale array antenna 10 includes a phase-shifting feeding device 100, a radiation unit 200, and an actuator 300.
The plurality of radiation elements 200 are electrically connected to the phase-shift power feeding apparatus 100. The phase-shifting power feeding apparatus 100 is used for feeding multiple paths of phase-differential radio frequency signals into the plurality of radiating elements 200 respectively. Furthermore, the driving device 300 is drivingly connected to the phase-shifting power feeding device 100 for adjusting the phase of the multiple rf signals.
Referring to fig. 2 and 3, the phase-shifting feeding apparatus 100 according to the preferred embodiment of the present invention includes a feeding network element 110 and a phase-shifting element 120. Wherein:
the feeding network component 110 includes a substrate 111, a feeding line layer 112 and a ground layer 113. The power feeding line layer 112 and the ground layer 113 are formed on opposite sides of one side of the substrate 111. The substrate 111 is generally formed of a material having a relatively high dielectric constant; the ground layer 113 may be a metal layer formed on the surface of the substrate 111 by plating, printing, or the like; the feeder line layer 112 may be a stripline or microstrip structure. In this embodiment, the feeding network component 110 is an integrated PCB circuit structure, and may be in the form of a multi-layer or multi-layer circuit board.
Further, the feeding line layer 112 has a rf inlet 1121 and a plurality of rf outlets 1122. Specifically, the plurality of radiation units 200 are attached to the surface of the substrate 111 and are respectively welded to the plurality of rf outlets 1122, so that each rf outlet 1122 is electrically connected to one radiation unit 200, and feeding of the plurality of radiation units 200 is further achieved.
Specifically, in the present embodiment, the connection pads 1111 are respectively disposed at the positions of the substrate 111 corresponding to each rf outlet 1122. Therefore, when the radiation unit 200 is electrically connected to the rf outlet 1122, the radiation unit 200 can be attached to the corresponding connection pad 1111 and then soldered, so that the radiation unit 200 can be more conveniently mounted.
In an application scenario of the large-scale array antenna 10, the rf inlet 1121 is electrically connected to a signal transceiver of a base station. Therefore, the rf signal may enter the feeding network component 110 through the rf inlet 1121, and the multiple rf signals are output from the multiple rf outlets 1122.
Specifically, in this embodiment, the feeding network component 110 further includes a radio frequency connector 114, where the radio frequency connector 114 is disposed on a side of the substrate 111 facing away from the feeding line layer 112 and electrically connected to the radio frequency inlet 1121. Wherein the rf connector 114 generally conforms to a particular interface standard. Therefore, when the radio frequency connector 114 is electrically connected with the signal transceiver, the radio frequency connector can be directly plugged with the corresponding jack on the signal transceiver, so that the installation steps are effectively simplified, and the use is more convenient.
The feeder circuit layer 112 generally includes multiple stages of power dividers connected in series, and an input terminal of each succeeding power divider is electrically connected to an output terminal of a branch of the preceding power divider, so as to implement multiple outputs of radio frequency signals. As shown in fig. 5, the feeder circuit layer 112 in this embodiment includes a three-stage power divider. Wherein, the first stage is 1 one-to-two power divider, the second stage is 2 one-to-two power dividers, and the third stage is 4 one-to-three power dividers. Thus, 12 radio frequency channels can be formed. The number of rf outlets 1122 corresponds to the number of rf channels. Correspondingly, the number of the rf outlets 1122 in the feeder circuit layer 112 is also 12.
Referring to FIG. 4, the phase shift element 120 includes a metal cavity 121, a phase shift circuit layer 122 and a phase shift operation element 123. The phase shift circuit layer 122 is accommodated in the metal cavity 121, and the phase shift circuit layer 122 has an input end (not shown) and an output end (not shown).
The metal cavity 121 is generally in a strip shape, and the phase shift circuit layer 122 extends along the longitudinal direction of the metal cavity 121. The circuit form of the phase shift circuit layer 122 may be a PCB structure, a metal three-dimensional structure, a strip line structure, or a microstrip line structure, and may be the same as the circuit form of the feeding line layer 112. By varying the electrical length of the phase shift circuit layer 122, a change in the phase of the signal at its output, i.e., a phase shift, can be achieved.
The metal cavity 121 is attached to the side of the substrate 111 where the ground layer 113 is disposed and welded to the ground layer 113, and the input end and the output end are welded to the feeding line layer 112 respectively, so as to connect the phase shift circuit layer 122 in series in the feeding line layer 112. The phase shift circuit layer 122 may shift the phase of the rf signal passing through the feeder circuit layer 112, so that the rf signals output by the different rf outlets 1122 have a phase difference.
In another embodiment, each phase shift circuit layer 122 has a plurality of output terminals, and the plurality of output terminals are electrically connected to the plurality of power dividers, respectively. That is, the same phase shift circuit layer 122 can be connected in series to the branches of the power splitters, so that the phase shift component 120 can be shared by multiple rf channels, thereby facilitating to reduce the volume of the phase shift feeding apparatus 100.
By soldering, the feed network component 110 and the phase shift component 120 can be integrated without using a coaxial feed line, so that the volume of the phase shift feed device 100 is significantly reduced compared to the sum of the volume of a conventional phase shifter and the feed network. In addition, the metal cavity 121 and the phase shift circuit layer 122 are located on the side of the substrate 111 facing away from the feeder circuit layer 112. That is, the integration of the phase shift assembly 120 does not occupy the wiring space of the feeding line layer 112, so the size of the substrate 111 is not increased by the arrangement of the phase shift assembly 120, and the size of the feeding network assembly 110 is not increased compared to the conventional feeding network.
Further, by operating the phase shift operation element 123, the electrical length of the phase shift circuit layer 122 can be changed, so as to adjust the phase of the rf signal output from each rf outlet 1122. Specifically, the actuator 300 is located on a side of the substrate 111 facing away from the radiation unit 200, and the actuator 300 is in driving connection with the phase shift operation assembly 123.
According to different phase shifting principles, medium sliding type phase shifting and conductor sliding type phase shifting can be divided. Because the medium sliding type phase shifting has the advantages of compact structure, small intermodulation interference and the like, the phase shifting is realized by adopting a medium sliding mode in the embodiment. Therefore, the phase shift operating member 123 in this embodiment is a dielectric plate.
The dielectric plate is partially accommodated in the metal cavity 121 and disposed opposite to the phase shift circuit layer 122, and the other part of the dielectric plate extends out of the metal cavity 121. The dielectric plate can slide along the metal cavity 121. The transmission device 300 can change the electrical length of the phase shift circuit layer 122 by driving the dielectric plate to slide, so as to change the phase of the signal output from the rf outlet 1122, thereby adjusting the beam of the antenna.
In this embodiment, a planar pad 1112 electrically connected to the ground layer 113 is formed on the side of the substrate 111 facing away from the feeder circuit layer 112, and the metal cavity 121 is attached to the surface of the planar pad 1112 and soldered.
Specifically, the welding position of the metal cavity 121 and the substrate 111 is a planar structure, and a three-dimensional structure such as a slot is not required for fixing the two. In the actual production process, the metal cavity 121 can be directly positioned and placed by adopting a surface mounting process, so that the efficiency is improved. Moreover, since the metal cavity is formed by pultrusion of the profile, additional processing such as inserting slots and the like is not required to be performed on the metal cavity 121, and thus the cost can be reduced.
The planar pad 1112 has a strip shape substantially corresponding to the extending direction of the metal cavity 121. After the metal cavity 121 is positioned and placed, a solder reflow process may be used to solder the metal cavity to the planar pads 1112.
In the embodiment, the substrate 111 is provided with a slot pad 1113, the slot pad 1113 is insulated from the ground layer 113 and electrically connected to the feeding line layer 112, and the input terminal and the output terminal are disposed through the slot pad 1113 and soldered.
Specifically, the socket pad 1113 may be formed by forming a metallization socket on the substrate 111 and providing a pad at one end of the socket. A non-metal annulus may be provided at the edge of the slot-in pad 1113 to insulate it from the ground layer 113. At this time, the phase shift circuit layer 122 may adopt a three-dimensional structure such as a PCB board, a metal circuit board, etc., and partially protrudes to form a pin structure (not shown), on which the input end and the output end are located. The pin structure is inserted into the slot-in pad 1113 to position and pre-fix the phase shift assembly 120, thereby facilitating the subsequent soldering operation. The pin structure with the input and output terminals can then be soldered to the socket pad 1113 using solder reflow.
Further, in the present embodiment, the substrate 111 includes a plurality of sub-boards (not shown) spliced with each other, and the input end and the output end of the same phase shift circuit layer 122 respectively penetrate through the slot-in pads 1113 of two adjacent sub-boards.
That is, the feed network assembly 110 may be split into multiple smaller boards (i.e., daughter boards) rather than a single large board. And the small board splicing mode can make the design of the feed network component 110 more flexible and cheaper. Specifically, each daughter board may have a portion (e.g., a power divider) of the feeder line layer 112 formed thereon. Further, by "bridging" of the phase shift circuit layer 122, not only can physical connection between two adjacent daughter boards be realized, but also circuit portions on a plurality of daughter boards can be connected into a whole, and finally the required feeder circuit layer 112 is obtained.
In the embodiment, an opening 1211 is formed on a sidewall of the metal cavity 121 facing the substrate 111, and the substrate 111 covers the opening 1211.
Specifically, the metal cavity 121 is a U-shaped slot structure, and the opening 1211 extends along a length direction thereof. The metal cavity 121 may be defined by a bottom wall and two opposite sidewalls extending along two sides of the bottom wall, or may be defined by only one arc-shaped sidewall. Therefore, compared with the cavity of the conventional phase shifter, the metal cavity 121 is equivalent to a default sidewall, so that the thickness and the weight of the metal cavity can be significantly reduced, which is further beneficial to the miniaturization of the large-scale array antenna 10.
Moreover, since the substrate 111 covers the opening 1211 and the metal cavity 121 is electrically connected to the ground layer 113, the substrate 111 functionally corresponds to the default sidewall of the metal cavity 121. Therefore, on the premise that the thickness and the weight of the metal cavity 121 are significantly reduced, the function of the phase-shift power feeding device 100 can be ensured not to be affected.
Referring to fig. 1 again, in the present embodiment, the large-scale array antenna 10 further includes a reflection plate 400. The phase-shift power feeding device 100 is installed at one side of the reflection plate 400, and the actuator 300 is installed at the other side of the reflection plate 400.
The reflection plate 400 is generally a metal plate structure, and can enhance electromagnetic wave signals. In addition, the reflection plate 400 also serves as a load-bearing body, having high mechanical strength. Obviously, the reflector 400 may be omitted when the feed network component 110 and the phase shifting component 120 are sufficient to provide mechanical strength support for the antenna. In this case, the actuator 300 may be directly mounted to the phase shift assembly 120.
Further, in the present embodiment, the reflection plate 400 is provided with a position-avoiding hole 410, and the metal cavity 121 is located in the position-avoiding hole 410.
Specifically, the avoiding hole 410 matches with the contour of the metal cavity 121, and the avoiding hole 410 is used for avoiding the phase shift assembly 120 protruding from the surface of the substrate 111. Since the projection area of the phase shift key 120 on the surface of the reflection plate 400 is small, the mechanical strength of the reflection plate 400 can be maintained even if the position avoiding hole 410 is opened, and the weight of the reflection plate 400 is reduced. Meanwhile, the phase shift element 120 is embedded in the reflection plate 400, and the two elements overlap in the thickness direction, so that the thickness of the large-scale array antenna 10 can be further reduced.
In the phase-shift feeding device 100, the metal cavity 121 and the feeding line layer 112 are commonly disposed by welding, and the phase-shift circuit layer 122 and the feeding line layer 112 are connected in series. Accordingly, the integration of feed network component 110 with phase shifting component 120 may be achieved without the use of coaxial feed lines. In addition, the metal cavity 121 and the phase shift circuit layer 122 are located on the side of the substrate 111 facing away from the feeder circuit layer 112. That is, the integration of the phase shift assembly 120 does not occupy the wiring space of the feeder line layer 112, so the size of the substrate 111 is not increased by the provision of the phase shift assembly 120. It is obvious that when the phase shift feeding device 100 is applied to the large-scale array antenna 10, it is advantageous to reduce the volume and simplify the structure, thereby facilitating the miniaturization of the large-scale array antenna 10.
Referring again to fig. 1, the present invention also provides a radiation array 20. The radiation array 200 includes the phase-shift feeding device 100 and a plurality of radiation elements 200. Specifically, the plurality of radiation units 200 are attached to a side of the substrate 111 facing away from the phase shift assembly 120 and are respectively welded to the plurality of rf outlets 1122.
A plurality of phase-shift power feeding devices 100 may be integrated into the radiation array 20, and the plurality of phase-shift power feeding devices 100 are arranged in parallel. Taking fig. 1 as an example, the radiation arrays 20 are arranged in an array of 8 rows and 12 columns, the number of the phase-shift feeding devices 100 is 8, and each phase-shift feeding device 100 is welded with 12 radiation units 200, which have 96 radio frequency channels in total.
Obviously, the number of phase-shifting feed devices 100 integrated in the radiating array 20 can be adjusted accordingly, according to the different requirements for the number of radio-frequency channels.
In practical applications, it is considered that the electric components, i.e., the feeding network component 110, the phase shifting component 120 and the radiation unit 200, are assembled and welded in advance to obtain the radiation array 20. The radiation array 20 is then assembled with mechanical components such as the transmission device 300 and the reflection plate 400, so as to obtain the large-scale array antenna 10. Therefore, the production of the electrical component is completed through once reflow soldering or other automatic soldering processes, so that the efficiency and the quality of the soldering work are improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is 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 (13)
1. A phase-shifting feed apparatus, comprising:
the feed network component comprises a substrate, a ground layer formed on one side of the substrate and a feed circuit layer formed on the other side of the substrate, wherein the feed circuit layer is provided with a radio frequency inlet and a plurality of radio frequency outlets; and
the phase-shifting assembly comprises a metal cavity, a phase-shifting circuit layer and a phase-shifting operation piece, wherein the phase-shifting circuit layer and the phase-shifting operation piece are accommodated in the metal cavity;
the metal cavity is attached to one side of the substrate, where the ground layer is arranged, and is welded to the ground layer, and the input end and the output end are respectively welded to the feed line layer, so that the phase shift circuit layer is connected in series in the feed line layer.
2. The phase-shift feeding device according to claim 1, wherein a planar pad electrically connected to the ground layer is formed on a side of the substrate facing away from the feeding line layer, and the metal cavity is attached to a surface of the planar pad and soldered.
3. The phase-shift feeding device according to claim 1, wherein a slot pad is formed on the substrate, the slot pad is insulated from the ground layer and electrically connected to the feeding line layer, and the input terminal and the output terminal are inserted into the slot pad and soldered thereto.
4. The phase-shifting power feeding device as claimed in claim 3, wherein the substrate comprises a plurality of sub-boards connected to each other, and the input terminal and the output terminal of the same phase-shifting circuit layer are respectively inserted into the slot-type pads of two adjacent sub-boards.
5. The phase-shift power feeding device as claimed in claim 1, wherein the substrate is provided with a connection pad at a position corresponding to each of the rf outlets.
6. The phase-shifting feed apparatus of claim 1, wherein the feed network assembly further comprises a radio frequency connector disposed on a side of the substrate facing away from the feed line layer and electrically connected to the radio frequency inlet.
7. The phase-shift power feeding device according to claim 1, wherein a side wall of the metal cavity facing the substrate is formed with an opening, and the substrate covers the opening.
8. The phase-shift feeding device according to claim 1, wherein the phase-shift operating element is a dielectric plate, the dielectric plate is partially accommodated in the metal cavity and disposed opposite to the phase-shift circuit layer, and the other part of the dielectric plate extends out of the metal cavity.
9. The phase-shifting feed apparatus according to claim 1, wherein the feed line layer comprises a plurality of power dividers connected in series, each of the phase-shifting circuit layers has a plurality of the output terminals, and the output terminals are electrically connected to the power dividers, respectively.
10. A radiating array, comprising:
a phase-shift feeding device according to any one of claims 1 to 9; and
and the plurality of radiation units are attached to one side of the substrate, which faces away from the phase-shifting assembly, and are respectively welded with the plurality of radio frequency outlets.
11. A massive array antenna, comprising:
the radiating array of claim 10; and
and the transmission device is positioned on one side of the substrate, which is back to the radiation unit, and is in transmission connection with the phase-shifting operation assembly.
12. The massive array antenna of claim 11, further comprising a reflector plate, wherein the radiating array is mounted on one side of the reflector plate, and wherein the actuator is mounted on the other side of the reflector plate.
13. The large-scale array antenna of claim 12, wherein the reflector plate has a hole for avoiding positions, and the metal cavity is located in the hole for avoiding positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921926526.7U CN210692765U (en) | 2019-11-08 | 2019-11-08 | Phase-shift feeding device, radiation array and large-scale array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921926526.7U CN210692765U (en) | 2019-11-08 | 2019-11-08 | Phase-shift feeding device, radiation array and large-scale array antenna |
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| Publication Number | Publication Date |
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| CN210692765U true CN210692765U (en) | 2020-06-05 |
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| CN201921926526.7U Withdrawn - After Issue CN210692765U (en) | 2019-11-08 | 2019-11-08 | Phase-shift feeding device, radiation array and large-scale array antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110931987A (en) * | 2019-11-08 | 2020-03-27 | 京信通信技术(广州)有限公司 | Phase-shift feeding device, radiation array and large-scale array antenna |
| WO2021135269A1 (en) * | 2019-12-31 | 2021-07-08 | 京信通信技术(广州)有限公司 | Antenna and phase-shifting feeding device |
| 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 |
-
2019
- 2019-11-08 CN CN201921926526.7U patent/CN210692765U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110931987A (en) * | 2019-11-08 | 2020-03-27 | 京信通信技术(广州)有限公司 | Phase-shift feeding device, radiation array and large-scale array antenna |
| CN110931987B (en) * | 2019-11-08 | 2024-05-28 | 京信通信技术(广州)有限公司 | Phase-shifting feed device, radiating array and large-scale array antenna |
| WO2021135269A1 (en) * | 2019-12-31 | 2021-07-08 | 京信通信技术(广州)有限公司 | Antenna and phase-shifting feeding device |
| 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 |
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