CN110350926A - A kind of adjustable multi-beam radio frequency component of double frequency polarization - Google Patents
A kind of adjustable multi-beam radio frequency component of double frequency polarization Download PDFInfo
- Publication number
- CN110350926A CN110350926A CN201910721383.4A CN201910721383A CN110350926A CN 110350926 A CN110350926 A CN 110350926A CN 201910721383 A CN201910721383 A CN 201910721383A CN 110350926 A CN110350926 A CN 110350926A
- Authority
- CN
- China
- Prior art keywords
- input
- branch
- output
- signal
- low noise
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000010287 polarization Effects 0.000 title claims abstract description 40
- 239000011159 matrix material Substances 0.000 claims abstract description 22
- 238000001914 filtration Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 abstract description 4
- 238000003491 array Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of adjustable multi-beam radio frequency components of double frequency polarization, belong to phased array antenna technical field.It includes multiple basic radio-frequency module units and 2k beam forming network, basic radio-frequency module unit includes two input branches and two output branches, inputting branch includes first low noise, a multiple-input, multiple-output filter group switch matrix and 2k the second low noise, output branch includes k polarization matching chip, a multiple-input, multiple-output filter group switch matrix and k rear end branch, and each rear end branch includes a width phase control chip and a low noise；Each input branch has an input port, and each rear end branch has an output port.The invention realizes the use of more star communications on the way suitable for the phased array antenna of satellite communication field or Subarray Digital Arrays, especially suitable for common antenna.
Description
Technical field
The present invention relates to phased array antenna technical fields, particularly relate to a kind of adjustable multi-beam radio frequency component of double frequency polarization.
Background technique
Currently, common double frequency polarizes adjustable multi-beam radio frequency component design method mainly include the following types:
1, low-and high-frequency passes through different radio frequency branches respectively and realizes.The theory of this design is relatively simple, it is easy to accomplish, electrical
It is relatively independent on radio frequency, physical structure, application function and all kinds of interfaces.But this kind of design method is to the physics of radio-frequency module
Size requires high, and the radio frequency local road design of each frequency range has to independent physical space and give guarantee to be just able to achieve corresponding electricity
Gas performance, and external interface relationship is complicated, the radio frequency for being unfavorable for rear end is integrated.
2, co polar signal is not designed by different radio frequency branches.This mentality of designing is simple and easy, reduces
The polarization matching pressure of rear end radio frequency branch, but it is higher to the electric requirement of antenna, and different antenna polarization form needs pass through
Different antenna structures realizes that space shared by the antenna of each form is seldom, be unfavorable for the optimization design of antenna, especially
It is to be not content in the application that polarization needs constantly to be adjusted.
3, multiple wave beams are subjected to multiple channel Integrated designs.Each channel is divided into multiple subchannels by which, often
A subchannel realizes that different wave beam functions, the benefit designed in this way are required small volumes, and integration degree is higher, but day
The polarization characteristic flexibility of line wave beam is inadequate, and the isolation needs between channel are well-designed, differ especially for frequency range
Biggish multifrequency application, the wave beam orthogonality that this kind of design generates are relatively poor.
As it can be seen that all kinds of double frequencies in the prior art polarize adjustable multi-beam radio frequency component on implementation and using effect
There is also various problems, still there is improved space.
Summary of the invention
In view of this, providing a kind of double frequency pole it is an object of the invention to avoid the shortcoming in above-mentioned background technique
Change adjustable multi-beam radio frequency component, the radio frequency component structure is simple, and polarization matching can be carried out according to real work demand, forms institute
Any linear polarization or circular polarisation needed.
To achieve the goals above, the technical scheme adopted by the invention is as follows:
The adjustable multi-beam radio frequency component of a kind of double frequency polarization comprising multiple basic radio-frequency module units and 2k Beam synthesis net
Network, k >=1, the basic radio-frequency module unit include two input branches and two output branches, and the input branch includes
One the first low noise, a multiple-input, multiple-output filter group switch matrix and 2k the second low noise, the output branch includes k
A polarization matching chip, a multiple-input, multiple-output filter group switch matrix and k rear end branch, each rear end branch include one
Width phase control chip and a low noise；Each input branch has an input port, and each rear end branch is defeated with one
Exit port；The signal a inputted from input port is divided into two paths of signals b, every road signal b after the first low noise of this input branch
The multiple-input, multiple-output filter group switch matrix for entering this input branch by switching gate, exports after high pass or low-pass filtering
The road k signal c, every road signal c points are two paths of signals d, and every road signal d enters after the second low noise of this input branch
One polarization matching chip, the polarization for respectively enteing different output branches from the two paths of signals d with signal c all the way match core
In piece, each polarization matching chip receives and only receives two signal d from different input branches, and polarize matching chip
Output signal enters the multiple-input, multiple-output filter group switch matrix of this output branch by switching gate, by high pass or low pass filtered
It is exported after wave to a rear end branch of this output branch, rear end branch passes through output port output signal e；Each basic radio frequency
2k output port of modular unit connects one to one with 2k beam forming network, and each beam forming network will come from
It is externally exported after the signal e of basic radio-frequency module unit synthesizes wave beam.
Specifically, the multiple-input, multiple-output filter group switch matrix has k low-pass filter routing path and k high pass filter
Wave device routing path.
Specifically, the polarization matching chip includes two branches and a power splitter, the input signal point of two branches
Not after the successively processing of phase shifter, attenuator and low noise chip on respective branch, by power splitter carry out synthesis and it is right
Outer output.
The present invention has the following advantages over the background art:
1, the present invention integrates low-and high-frequency different frequency range, realizes in a radio-frequency module, has space small, function and service, knot
The compact feature of structure.
2, multiple polarization are integrated matching and adjustment, it can be achieved that multiple polarization applications by the present invention, are reduced externally
The interface quantity in portion.
3, multiple wave beams are integrated the formation, it can be achieved that different frequency range different beams by the present invention, are widely used, can
To meet a variety of electronic information applications.
In short, the present invention has fully considered that the function of module design realizes diversification, selection and the pole of frequency had both been realized
Change matching, and different radio-frequency modules is carried out to select and fix multi-mode design, improves the functional compatibility of system.
Detailed description of the invention
Fig. 1 is that double frequency polarizes the structural block diagram of adjustable multi-beam radio frequency component in the embodiment of the present invention.
Fig. 2 is the structural block diagram of basic radio-frequency module unit in Fig. 1.
Fig. 3 is the structural block diagram of polarization matching chip in Fig. 2.
Fig. 4 is the structural block diagram of filter group switch matrix in Fig. 2.
Specific embodiment
The present invention is described further with reference to the accompanying drawings and detailed description.
Referring to Fig.1 and shown in 2, a kind of adjustable multi-beam radio frequency component of double frequency polarization comprising multiple basic radio-frequency modules
Unit and 4 beam forming networks, the basic radio-frequency module unit include two input branches and two output branches, institute
It states input branch and includes first low noise, a multiple-input, multiple-output filter group switch matrix and 4 the second low noise, it is described
Exporting branch includes 2 polarization matching chips, a multiple-input, multiple-output filter group switch matrix and 2 rear end branches, Mei Gehou
Holding branch includes a width phase control chip and a low noise；Each input branch has an input port, each rear end
Branch has an output port；The signal a inputted from input port is divided into two-way after the first low noise of this input branch
Signal b, every road signal b enter the multiple-input, multiple-output filter group switch matrix of this input branch by switching gate, by high pass
Or 2 road signal c are exported after low-pass filtering, every road signal c points are two paths of signals d, and every road signal d passes through this input branch
Enter a polarization matching chip after second low noise, respectively enters different outputs from the two paths of signals d with signal c all the way
In the polarization matching chip of branch, each polarization matching chip receives and only receives two signals from different input branches
D, the output signal for the matching chip that polarizes enter the multiple-input, multiple-output filter group switch matrix of this output branch by switching gate,
It is exported after high pass or low-pass filtering to a rear end branch of this output branch, rear end branch is exported by output port to be believed
Number e；4 output ports of each basic radio-frequency module unit connect one to one with 4 beam forming networks, each wave beam
Synthesis network will be from externally exporting after the signal e of basic radio-frequency module unit synthesizes wave beam.
Specifically, as shown in figure 4, the multiple-input, multiple-output filter group switch matrix has 2 low-pass filter routing paths
With 2 high-pass filter routing paths.
Specifically, as shown in figure 3, the polarization matching chip includes two branches and a power splitter, two branches
Input signal respectively after the successively processing of phase shifter, attenuator and low noise chip on respective branch, by power splitter into
Row is synthesized and is externally exported.
The double frequency adjustable multi-beam radio frequency component that polarizes has the characteristics that reliable compact, can meet not same polarization different frequency
Etc. the beam forming of multiple modes, applicable technology path is provided for the beam flexibility of whole system.
The double frequency polarize adjustable multi-beam radio frequency component working principle it is as follows:
In radio frequency component, each basic radio-frequency module unit all has two radio-frequency channels, connects respectively per radio-frequency channel all the way
Connect the horizontal and vertical or left-handed circle and right-handed circular polarization signal of antenna end.Low noise core is carried out first per polarized signal all the way
Piece amplifies, and carries out equal function point by power splitter or do not wait the signal of function point to distribute, and be filtered device by switch
The selection of group chip switch matrix, selectable modes have two-way low-pass filter and two-way high-pass filter, can arbitrarily form 4
Road low frequency signal or 4 road high-frequency signals or 2 road low frequency signals and 2 road high-frequency signals.In addition polarized signal process all the way
Similar therewith, the mode for switching selection is also same.
After the not like-polarized complete switch of signal behavior, signal distribution and signal amplification are further carried out, is respectively enterd
Respective polarization matching chip is adjusted by the amplitude of two paths of signals, phase etc., can be formed all the way in polarization matching chip
Required polarized signal, the signal further select filter group chip switch matrix, the filter of the selection mode and front
The selection of group chip switch matrix must be consistent.Then the signal passes through the amplitude and phase of width phase control chip progress signal
Control carries out signal with the signal of same link in other radio frequency basic units after amplification and synthesizes, pole needed for ultimately forming all the way
The wave beam being directed toward needed for frequency needed for changing.
Present invention is generally directed to the multi-beam application demands of low-and high-frequency different frequency range.It is in physical layer, by low-and high-frequency collection
In Cheng Yi radio-frequency module.The present invention can by switch selecting module inside filter group switch matrix chip channel,
Realize multiple operating modes such as 2 wave beams of low frequency, 4 wave beams of 2 wave beams of high frequency or low frequency or 4 wave beams of high frequency.For
The demand of not same polarization work can carry out polarization modulation by the polarization matching chip inside basic radio-frequency module unit.In base
The outside of this radio-frequency module unit, mainly carries out polarization matching using dual polarized antenna unit, and signal has orthogonality.In this way
Design fully considered system design functional diversities, both can for multi-beam work requirements to radio frequency link inside
Framework is increased and decreased chip, simplifies design difficulty, and can polarize and match to it according to real work demand, forms institute
Any linear polarization or circular polarisation needed.In short, the invention is suitable for the phased array antenna or submatrix series of satellite communication field
In word battle array, the use of more star communications is realized on the way especially suitable for common antenna.
Claims (3)
- The adjustable multi-beam radio frequency component 1. a kind of double frequency polarizes, which is characterized in that including multiple basic radio-frequency module units and 2k A beam forming network, k >=1, the basic radio-frequency module unit includes two input branches and two output branches, described Inputting branch includes first low noise, a multiple-input, multiple-output filter group switch matrix and 2k the second low noise, described Exporting branch includes k polarization matching chip, a multiple-input, multiple-output filter group switch matrix and k rear end branch, Mei Gehou Holding branch includes a width phase control chip and a low noise；Each input branch has an input port, each rear end Branch has an output port；The signal a inputted from input port is divided into two-way after the first low noise of this input branch Signal b, every road signal b enter the multiple-input, multiple-output filter group switch matrix of this input branch by switching gate, by high pass Or the road k signal c is exported after low-pass filtering, every road signal c points are two paths of signals d, and every road signal d passes through this input branch Enter a polarization matching chip after second low noise, respectively enters different outputs from the two paths of signals d with signal c all the way In the polarization matching chip of branch, each polarization matching chip receives and only receives two signals from different input branches D, the output signal for the matching chip that polarizes enter the multiple-input, multiple-output filter group switch matrix of this output branch by switching gate, It is exported after high pass or low-pass filtering to a rear end branch of this output branch, rear end branch is exported by output port to be believed Number e；2k output port of each basic radio-frequency module unit connects one to one with 2k beam forming network, Mei Yibo Shu Hecheng network will be from externally exporting after the signal e of basic radio-frequency module unit synthesizes wave beam.
- The adjustable multi-beam radio frequency component 2. a kind of double frequency according to claim 1 polarizes, which is characterized in that enter described more more Filter group switch matrix has k low-pass filter routing path and k high-pass filter routing path out.
- The adjustable multi-beam radio frequency component 3. a kind of double frequency according to claim 1 polarizes, which is characterized in that the polarization Distribution chip includes two branches and a power splitter, and the input signal of two branches passes through phase shifter on respective branch respectively, declines After the successively processing for subtracting device and low noise chip, is synthesized by power splitter and externally exported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910721383.4A CN110350926A (en) | 2019-08-06 | 2019-08-06 | A kind of adjustable multi-beam radio frequency component of double frequency polarization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910721383.4A CN110350926A (en) | 2019-08-06 | 2019-08-06 | A kind of adjustable multi-beam radio frequency component of double frequency polarization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110350926A true CN110350926A (en) | 2019-10-18 |
Family
ID=68184081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910721383.4A Pending CN110350926A (en) | 2019-08-06 | 2019-08-06 | A kind of adjustable multi-beam radio frequency component of double frequency polarization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110350926A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995198A (en) * | 2019-11-24 | 2020-04-10 | 扬州海科电子科技有限公司 | Miniaturized quick reconfigurable preselector device |
| CN111641425A (en) * | 2020-05-18 | 2020-09-08 | 南京华成微波技术有限公司 | Implementation mode of low-cost multi-beam radio frequency front end |
| CN112736494A (en) * | 2020-12-01 | 2021-04-30 | 北京遥感设备研究所 | Low-cost dual-polarized phased array antenna and processing method |
| CN113054991A (en) * | 2021-02-02 | 2021-06-29 | 中国电子科技集团公司第二十九研究所 | Implementation method of switch matrix, module and beam forming network |
| CN114047398A (en) * | 2021-10-29 | 2022-02-15 | 中国电子科技集团公司第二十九研究所 | Automatic testing device and method for multi-beam assembly |
| WO2022104762A1 (en) * | 2020-11-23 | 2022-05-27 | 华为技术有限公司 | Multi-band low-noise amplifier, phased array, and electronic device |
| CN117673751A (en) * | 2023-12-05 | 2024-03-08 | 重庆西南集成电路设计有限责任公司 | Polarized switching multi-beam multi-channel phased array chip |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6442148B1 (en) * | 1998-12-23 | 2002-08-27 | Hughes Electronics Corporation | Reconfigurable multibeam communications satellite having frequency channelization |
| CN106252887A (en) * | 2016-09-08 | 2016-12-21 | 中国电子科技集团公司第五十四研究所 | A kind of satellite communication transmitting-receiving subassembly and bidimensional active phase array antenna |
| US20170062950A1 (en) * | 2014-05-14 | 2017-03-02 | Huawei Technologies Co., Ltd. | Multi-beam antenna system and phase adjustment method for multi-beam antenna system, and dual-polarized antenna system |
| CN108390703A (en) * | 2018-01-25 | 2018-08-10 | 成都天锐星通科技有限公司 | A kind of multi-beam phased array antenna mechanism |
| CN109495140A (en) * | 2018-03-12 | 2019-03-19 | 徐立 | A kind of beam search tracking wireless communication system and beam search tracking |
| CN209844938U (en) * | 2019-08-06 | 2019-12-24 | 中国电子科技集团公司第五十四研究所 | Dual-frequency polarization adjustable multi-beam radio frequency assembly |
-
2019
- 2019-08-06 CN CN201910721383.4A patent/CN110350926A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6442148B1 (en) * | 1998-12-23 | 2002-08-27 | Hughes Electronics Corporation | Reconfigurable multibeam communications satellite having frequency channelization |
| US20170062950A1 (en) * | 2014-05-14 | 2017-03-02 | Huawei Technologies Co., Ltd. | Multi-beam antenna system and phase adjustment method for multi-beam antenna system, and dual-polarized antenna system |
| CN106252887A (en) * | 2016-09-08 | 2016-12-21 | 中国电子科技集团公司第五十四研究所 | A kind of satellite communication transmitting-receiving subassembly and bidimensional active phase array antenna |
| CN108390703A (en) * | 2018-01-25 | 2018-08-10 | 成都天锐星通科技有限公司 | A kind of multi-beam phased array antenna mechanism |
| CN109495140A (en) * | 2018-03-12 | 2019-03-19 | 徐立 | A kind of beam search tracking wireless communication system and beam search tracking |
| CN209844938U (en) * | 2019-08-06 | 2019-12-24 | 中国电子科技集团公司第五十四研究所 | Dual-frequency polarization adjustable multi-beam radio frequency assembly |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995198A (en) * | 2019-11-24 | 2020-04-10 | 扬州海科电子科技有限公司 | Miniaturized quick reconfigurable preselector device |
| CN110995198B (en) * | 2019-11-24 | 2023-08-22 | 扬州海科电子科技有限公司 | Miniaturized quick reconfigurable type pre-selector device |
| CN111641425A (en) * | 2020-05-18 | 2020-09-08 | 南京华成微波技术有限公司 | Implementation mode of low-cost multi-beam radio frequency front end |
| CN111641425B (en) * | 2020-05-18 | 2022-06-07 | 南京华成微波技术有限公司 | Implementation mode of low-cost multi-beam radio frequency front end |
| WO2022104762A1 (en) * | 2020-11-23 | 2022-05-27 | 华为技术有限公司 | Multi-band low-noise amplifier, phased array, and electronic device |
| CN112736494A (en) * | 2020-12-01 | 2021-04-30 | 北京遥感设备研究所 | Low-cost dual-polarized phased array antenna and processing method |
| CN113054991A (en) * | 2021-02-02 | 2021-06-29 | 中国电子科技集团公司第二十九研究所 | Implementation method of switch matrix, module and beam forming network |
| CN114047398A (en) * | 2021-10-29 | 2022-02-15 | 中国电子科技集团公司第二十九研究所 | Automatic testing device and method for multi-beam assembly |
| CN114047398B (en) * | 2021-10-29 | 2023-04-25 | 中国电子科技集团公司第二十九研究所 | Automatic testing device and testing method for multi-beam assembly |
| CN117673751A (en) * | 2023-12-05 | 2024-03-08 | 重庆西南集成电路设计有限责任公司 | Polarized switching multi-beam multi-channel phased array chip |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110350926A (en) | A kind of adjustable multi-beam radio frequency component of double frequency polarization | |
| TWI429137B (en) | Feeding device for smart antenna | |
| KR20160146850A (en) | System for transmission and/or reception of signals having electromagnetic modes with orbital angular momentum, and device and method thereof | |
| TW201115907A (en) | Preselector amplifier | |
| WO2023098201A1 (en) | Radio frequency system and communication device | |
| CN104090269A (en) | Dual-polarization multifunctional ultra wide band T/R module | |
| CN106603129B (en) | Multi-antenna MIMO system | |
| CN109638476A (en) | Feeding network and two-beam antenna | |
| CN209844938U (en) | Dual-frequency polarization adjustable multi-beam radio frequency assembly | |
| CN111525215B (en) | Phase shift unit, antenna unit, phased array unit, and phased array | |
| CN104702308A (en) | Micro structure MiMo radio frequency front end assembly | |
| US20240088554A1 (en) | Circuit and system apparatus for synthesizing one or multiple beams on a switched-feed antenna | |
| CN109964368B (en) | System and method for multi-mode active electronically scanned array | |
| CN210183329U (en) | Smart room antenna device and smart room system | |
| CN112054312B (en) | Antenna structure and electronic device | |
| CN103179388A (en) | Matrix receiving method and device for multiple satellite digital television signals | |
| CN110890631A (en) | Polarization feed network of multi-polarization mode | |
| CN105680801B (en) | A kind of multimode power amplifier and its mobile terminal for balancing heat dissipation | |
| CN204258802U (en) | A kind of miniaturization structure MiMo radio-frequency front-end assembly | |
| KR20200086462A (en) | 4-way power divider and combiner for phase array systems | |
| CN214480597U (en) | Multifunctional radio frequency module | |
| CN111901027B (en) | Four-in four-out differential multiplexing beam forming network | |
| CN108008357A (en) | A kind of azimuth plane synthesizer for radar antenna | |
| CN109687898A (en) | Broadband beams synthesis chip based on active true time delay elements | |
| CN204269814U (en) | Dual polarization multi-functional ultra broadband T/R assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |