CN203871478U - Compact type C frequency band receiving-transmitting shared dual-circularly polarized feed source assembly - Google Patents
Compact type C frequency band receiving-transmitting shared dual-circularly polarized feed source assembly Download PDFInfo
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- CN203871478U CN203871478U CN201420262945.6U CN201420262945U CN203871478U CN 203871478 U CN203871478 U CN 203871478U CN 201420262945 U CN201420262945 U CN 201420262945U CN 203871478 U CN203871478 U CN 203871478U
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Abstract
一种紧凑型C频段收发共用双圆极化馈源组件，包括光壁赋形喇叭、六端口耦合枢纽、四个低通滤波器、两个弯波导组件A、两个弯波导组件B、T型十字接头、发射隔板圆极化器、接收隔板圆极化器，方圆波导转换器、四个波导阻抗变换段；本实用新型采用易于加工、重量更轻的光壁赋形喇叭结合H面耦合、偏置结构的六端口极化频率双工器的方式，减轻了馈源组件整体重量；提出了基于H面耦合、偏置型六端口极化频率双工器的新结构形式，有效地缩减了馈源组件的轴向尺寸；采用电长度相同但结构形式不同的弯波导组件A、B实现T型十字接头和低通滤波器的连接，不但可保证发射通道信号需用的幅度相位特性，同时启到阻抗变换作用，改善了发射端口回波损耗性能。
A compact dual-circular polarization feed assembly for C-band transceivers, including optical wall shaped horns, six-port coupling hubs, four low-pass filters, two curved waveguide assemblies A, two curved waveguide assemblies B, T Type cross connector, transmitting partition circular polarizer, receiving partition circular polarizer, square-circle waveguide converter, four waveguide impedance conversion sections; The method of six-port polarized frequency duplexer with surface coupling and bias structure reduces the overall weight of the feed component; a new structure based on H-plane coupled and biased six-port polarized frequency duplexer is proposed, which is effective The axial size of the feed component is greatly reduced; the curved waveguide components A and B with the same electrical length but different structural forms are used to realize the connection between the T-shaped cross connector and the low-pass filter, which not only ensures the required amplitude and phase of the transmitting channel signal characteristics, and at the same time, it plays the role of impedance transformation, which improves the return loss performance of the transmitting port.
Description
Technical field
The utility model relates to a kind of compact C frequency range transmit-receive sharing double-circle polarization feed assembly, belongs to reflecting plane aerial feed source assembly field.
Background technology
In satellite communication reflector antenna system, feed assembly is indispensable parts.It realizes the function of reflector antenna system transmit-receive sharing or polarization multiplexing as the primary irradiation source of reflecting surface.Along with the continuous increase of communication satellite message capacity, often need reflecting plane aerial feed source assembly to there is the ability of transmit-receive sharing and polarization multiplexing simultaneously, simultaneously also more and more higher to the requirement of its electrical property, weight, volume.
Domestic and international spaceborne C frequency range transmit-receive sharing double-circle polarization feed assembly often adopts the mode of corrugated horn hyper polarization frequency diplexer to realize at present.The major way of wherein launching double-circle polarization signal formation have 1. dividing plate circular polarizer in conjunction with the form of symmetric form six ports coupling hinges 2. dividing plate circular polarizer in conjunction with the form of eccentrically arranged type six port E faces coupling hinges 3. 3dB electric bridge in conjunction with the form of eccentrically arranged type six port hinges.1. often there is the problem that axial dimension is larger in mode wherein, 2. mode can reduce the axial dimension of feed assembly to a certain extent, but it is limited to reduce degree, electrical property can be subject to some impacts simultaneously, mode is 3. owing to having adopted 3dB electric bridge, need to increase by 2 power dividers and realize electric bridge and coupling being connected of hinge, therefore the weight of feed assembly entirety increases again to some extent.Therefore from aspects such as electrical property, weight, physical dimensions, comprehensive compromise does not design above several situations.
Utility model content
The technical problem that the utility model solves is: overcome the deficiencies in the prior art, a kind of compact C frequency range transmit-receive sharing double-circle polarization feed assembly is provided, this feed assembly has the features such as electrical property is good, lightweight, axial dimension is little simultaneously, can meet the harsh requirement of the spaceborne transmit-receive sharing double-circle polarization of present stage C frequency range reflector antenna system to feed assembly weight and physical dimension.
The technical solution of the utility model is: a kind of compact C frequency range transmit-receive sharing double-circle polarization feed assembly, comprises light wall figuration loudspeaker, polarization frequency diplexer; Described polarization frequency diplexer comprises six ports couplings hinges, four low pass filters, two waveguide bend assembly A, two waveguide bend assembly B, T-shaped cruciform joint, transmitting dividing plate circular polarizers, receives dividing plate circular polarizer, circumference waveguide switch, four waveguide impedance transforming sections;
Described six port coupling hinge main cavities are made up of the descending concentric circles waveguide of N section diameter, and circular waveguide one end of main cavity diameter maximum is connected with light wall excipient loudspeaker, and the other end is connected with reception dividing plate circular polarizer by circumference waveguide switch; The main cavity circular waveguide section being connected with light wall excipient loudspeaker circumferentially has four H face coupling gaps, and four coupling gap length 90 degree are uniformly distributed;
Described T-shaped cruciform joint main cavity is square wave guide, and square wave guide one end is connected with transmitting dividing plate polarizer public port, and the other end connects a short-circuit block; The wall center of square wave guide has four H face coupling gaps;
Four H face coupling gaps of one end of described four low pass filters and six ports coupling hinge are connected, and the other end is connected by four H face coupling gaps of waveguide bend assembly A, waveguide bend assembly B and waveguide impedance transforming section and T-shaped cruciform joint.The distribution mode of waveguide bend assembly A, waveguide bend assembly B is that two assembly A are adjacent, and two waveguide bend assembly B are adjacent;
Described waveguide bend assembly A, waveguide bend assembly B are by 90 ° of waveguide bends of two E faces, 90 ° of waveguide bend compositions of two H faces; 90 ° of waveguide bends of two H faces are connected into the waveguide of C word shape, and 90 ° of waveguide bends of two E faces are connected into zigzag waveguide by one section of straight wave guide; C font waveguide one end and low pass filter are connected, and the other end and zigzag waveguide are connected, and the zigzag waveguide other end and waveguide impedance transforming section one end are connected, and the waveguide impedance transforming section other end and T-shaped cruciform joint H face coupling gap are connected;
The total length of described waveguide bend assembly A, waveguide bend assembly B is identical, forms the straight wave guide length difference at the C font waveguide two ends of waveguide bend assembly A, waveguide bend assembly B.
Defining six port coupling hinge main cavity circular waveguide central axis is Z direction, and upper and lower two coupling gap lines of centres of six port coupling hinges are Y-direction, and left and right two coupling gap lines of centres are directions X; Described T-shaped cruciform joint is all positioned at six port coupling hinges and receives on the offset position of dividing plate circular polarizer with transmitting dividing plate circular polarizer;
Described offset position is that to project to subpoint line and the X-axis angle that the subpoint of XY plane and six ports coupling hinge main cavity circular waveguide central axis project to XY plane be 45 degree to T-shaped cruciform joint main cavity square wave guide central axis.
Described offset position also comprises following three kinds of offset position situations:
(1) to project to subpoint line that the subpoint of XY plane and six ports coupling hinge main cavity circular waveguide central axis project to XY plane and X-axis angle be-45 to spend to T-shaped cruciform joint square wave guide central axis;
(2) to project to subpoint line that the subpoint of XY plane and six ports coupling hinge main cavity circular waveguide central axis project to XY plane and X-axis angle be-135 to spend to T-shaped cruciform joint square wave guide central axis;
(3) to project to subpoint line and X-axis angle that the subpoint of XY plane and six ports coupling hinge main cavity circular waveguide central axis project to XY plane be 135 degree to T-shaped cruciform joint square wave guide central axis.
Described transmitting dividing plate circular polarizer public port is square wave guide, and two rectangular waveguide ports are BJ40 standard rectangular waveguide mouth, are respectively left-hand circular polarization and right-handed circular polarization emission port.
Described reception dividing plate circular polarizer public port is square wave guide, and two rectangular waveguide ports are BJ70 standard rectangular waveguide mouth, are respectively left-hand circular polarization and right-handed circular polarization receiving port.
Described short-circuit block adopts aluminum alloy junction member.
Described four low pass filters are archipelago form filter.
Described waveguide impedance transforming section is notch cuttype transformer section.
The utility model beneficial effect is compared with prior art:
(1) the utility model adopts the light wall excipient loudspeaker that are easy to process, weight is lighter to realize in conjunction with the mode of the coupling of H face, eccentrically arranged type polarization frequency diplexer, reduced whole feed assembly weight, whole feed assembly weight is 10Kg (containing support);
(2) new structure form based on H face coupling, eccentrically arranged type polarization frequency diplexer the utility model proposes, has reduced the axial dimension of C frequency range transmit-receive sharing double-circle polarization feed assembly effectively, and whole feed assembly axial dimension is 700mm;
(3) the utility model has adopted the version of biasing, destroy the corresponding symmetry of transmission channel, therefore can not adopt again four identical waveguide bend assemblies to realize the connection of T-shaped cruciform joint and four low pass filters, but adopt two kinds of electrical length identical, the waveguide bend assembly A that version is different, the connection that B realizes T-shaped cruciform joint and four low pass filters, not only can ensure the amplitude-phase characteristic that transmission channel signal need be used, open impedance transformation effect simultaneously, improved emission port return loss performance.
Brief description of the drawings
Fig. 1 is the utility model compact C frequency range transmit-receive sharing double-circle polarization feed modular construction schematic diagram;
Fig. 2 is the utility model light wall figuration loudspeaker and six ports polarization frequency diplexer syndeton schematic diagram;
Fig. 3 is the utility model six port polarization frequency diplexer structural representations;
Fig. 4 is the utility model six port polarization frequency diplexer blast structural representations;
Fig. 5 is the utility model six port polarization frequency diplexer transmit frequency band port performance simulation curves;
Fig. 6 is that the utility model six port polarization frequency diplexers receive frequency range port performance simulation curve;
Fig. 7 is the utility model feed assembly transmit frequency band (3.5GHz) Direction Pattern Simulation curve;
Fig. 8 is that the utility model feed assembly receives frequency range (5.8GHz) Direction Pattern Simulation curve.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is further described in detail.
The feed assembly of utility model works in C frequency range, has the multiplexing function of transmit-receive sharing and circular polarization.Adopt light wall figuration loudspeaker 1 to realize in conjunction with the mode of the coupling of H face, eccentrically arranged type polarization frequency diplexer 2.Provided as shown in Figure 1 the structural representation of feed assembly, Fig. 2 has provided light wall figuration loudspeaker 1 and polarization frequency diplexer 2 annexation schematic diagrames.This feed assembly has four input ports, wherein launching 8 two rectangular waveguide ports of dividing plate circular polarizer is BJ40 standard rectangular waveguide mouth, be respectively left-hand circular polarization and right-handed circular polarization emission port, receiving 9 two rectangular waveguide ports of dividing plate circular polarizer is BJ70 standard rectangular waveguide mouth, is respectively left-hand circular polarization and right-handed circular polarization receiving port.
Described polarization frequency diplexer 2 structural representations as shown in Figure 3, comprise six ports couplings hinges 3, four low pass filters 4, two waveguide bend assembly A5, two waveguide bend assembly B6, T saltire joint 7, transmitting dividing plate circular polarizers 8, receive dividing plate circular polarizer 9, circumference waveguide switch 10.
Described polarization frequency diplexer 2 explodes structural representation as shown in Figure 4, according to microwave signal transmission situation in described polarization frequency diplexer 2, transmission channel comprises transmitting dividing plate circular polarizer 8, T-shaped cruciform joint 7, two waveguide bend assembly A5, two waveguide bend assembly B6, four low pass filters 4, six ports coupling hinges 3.Receive path comprises six port coupling hinges 3, circumference waveguide switch 10, receives dividing plate circular polarizer 9.Transmitting dividing plate circular polarizer 8 public ports are connected with T saltire joint 7 square wave guide ports, four H face coupling port of T saltire joint 7 are connected by two waveguide bend assembly A5, two waveguide bend assembly B6 with four H coupling port of six port coupling hinges 3, form the passage that transmits.Receive dividing plate circular polarizer 9 square wave guide ports and be connected by circumference waveguide switch 10 with the straight-through circular waveguide port of six port coupling hinges 3, form and receive signalling channel.
Described polarization frequency diplexer transmit frequency band and reception frequency range circular polarity format principle are as follows:
(1) transmit frequency band circular polarization forms principle: carry out transmitting of spontaneous emission dividing plate circular polarizer rectangular waveguide port and be separated into amplitude through transmitting dividing plate circular polarizer and equate, the two paths of signals that phase difference is 90 °, this two paths of signals is separated into through T-shaped cruciform joint the 4 road signals that amplitude equates again, and enter respectively 4 waveguide bend assemblies, the signal phase that wherein enters upper and lower two waveguide bend assemblies is identical, the signal phase that enters two the waveguide bend assemblies in left and right is identical, and signal phase in signal and two of left and right waveguide bend in upper and lower two waveguide bend assemblies differs 90 °, this 4 road signal enters six ports coupling hinges through 4 low pass filters again and synthesizes after the identical waveguide bend assembly of 4 electrical length, forming two-way amplitude equates, the signal that phase difference is 90 °, and the excitation of realization to light wall figuration loudspeaker, finally gone out to form the circularly polarised wave of transmit frequency band by loudspeaker radiation.In the whole passage transmitting, transmitting dividing plate circular polarizer is used for realizing transmit frequency band electromagnetic wave circular polarization characteristics, T-shaped cruciform joint 7 is realized separating of signal and synthesis with six port coupling hinges 3, low pass filter is realized the filtering of the passive intermodulation product to transmit frequency band, avoids passive intermodulation product to enter the effect of receiving port.
(2) receive circular polarization and form principle: receive signal by light wall figuration loudspeaker 1 and enter six ports, 3 hinges that are coupled, coupled sidewall place at six port coupling hinges 3 runs into stopping of low pass filter 4, then entered and received dividing plate circular polarizer 9 by the straight-through waveguide of six port coupling hinges 3, final process receives dividing plate circular polarizer 9 and forms the circular polarization working method that receives frequency range.
The utility model has adopted H face coupling bias structure form cleverly, and this kind of new version has reduced feed assembly axial length to a great extent.Owing to having adopted the version of biasing, destroy its corresponding symmetry, therefore can not adopt again four identical waveguide bend assembly connecting T-shaped cruciform joint 7 and low pass filters 4, but adopt two kinds of the waveguide bend assembly A5 that electrical length is identical, version is different, waveguide bend assembly B6 to realize the connection of T-shaped cruciform joint 7 and four low pass filters 4.Waveguide bend assembly A5, waveguide bend assembly B6 not only can ensure the amplitude-phase characteristic that transmission channel signal need be used, and open impedance transformation effect simultaneously, have improved emission port standing-wave ratio performance.
Provided as shown in Figure 5,6 polarization frequency diplexer in business software HFSS middle port performance simulation result curve, abscissa Freq represents frequency, and ordinate dB represents gain.Wherein Fig. 5 has provided the loss of transmit frequency band reflection coefficient of port and polarization isolation, at be better than-30dB of transmit frequency band reflection coefficient of port loss, be better than-21dB of polarization isolation, Fig. 6 has provided the reflection coefficient of port loss of reception frequency range and polarization isolation, receiving be better than-29dB of frequency range inner port return loss, be better than-28dB of polarization isolation.
Provided as shown in Figure 7,8 feed assembly entirety Direction Pattern Simulation curve in business software HFSS, abscissa Theta represents azimuth, and ordinate dB represents gain.Wherein Fig. 7 has provided transmit frequency band center frequency point main pole and Cross polarization pattern curve, with respect to main pole maximum, be better than-30dB of cross polarization, wherein Fig. 8 has provided reception frequency range center frequency point main pole and Cross polarization pattern curve, with respect to main pole maximum, be better than-30dB of cross polarization.
Final of the present utility modelly can reach following performance parameter and index, as shown in table 1:
Table 1
The content not being described in detail in the utility model specification belongs to those skilled in the art's known technology.
Claims (8)
1. a compact C frequency range transmit-receive sharing double-circle polarization feed assembly, is characterized in that: comprise light wall figuration loudspeaker (1), polarization frequency diplexer (2); Described polarization frequency diplexer (2) comprises six port coupling hinge (3), four low pass filters (4), two waveguide bend assembly A (5), two waveguide bend assembly B (6), T-shaped cruciform joint (7), transmitting dividing plate circular polarizer (8), receives dividing plate circular polarizer (9), circumference waveguide switch (10), four waveguide impedance transforming sections (11);
Described six port coupling hinge (3) main cavities are made up of the descending concentric circles waveguide of N section diameter, circular waveguide one end of main cavity diameter maximum is connected with light wall excipient loudspeaker (1), and the other end is connected with reception dividing plate circular polarizer (9) by circumference waveguide switch (10); The main cavity circular waveguide section being connected with light wall excipient loudspeaker (1) circumferentially has four H face coupling gaps, and four coupling gap length 90 degree are uniformly distributed;
Described T-shaped cruciform joint (7) main cavity is square wave guide, and square wave guide one end is connected with transmitting dividing plate polarizer (8) public port, and the other end connects a short-circuit block; The wall center of square wave guide has four H face coupling gaps;
Four H face coupling gaps of one end of described four low pass filters (4) and six ports coupling hinges (3) are connected, the other end is connected with four H face coupling gaps of T-shaped cruciform joint (7) by waveguide bend assembly A (5), waveguide bend assembly B (6) and waveguide impedance transforming section (11), the distribution mode of waveguide bend assembly A (5), waveguide bend assembly B (6) is that two assembly A (5) are adjacent, and two waveguide bend assembly B (6) are adjacent;
Described waveguide bend assembly A (5), waveguide bend assembly B (6) are by 90 ° of waveguide bends of two E faces, 90 ° of waveguide bend compositions of two H faces; 90 ° of waveguide bends of two H faces are connected into the waveguide of C word shape, and 90 ° of waveguide bends of two E faces are connected into zigzag waveguide by one section of straight wave guide; C font waveguide one end and low pass filter (4) are connected, the other end and zigzag waveguide are connected, the zigzag waveguide other end and waveguide impedance transforming section (11) one end are connected, and waveguide impedance transforming section (11) other end and T-shaped cruciform joint (7) H face coupling gap are connected;
The total length of described waveguide bend assembly A (5), waveguide bend assembly B (6) is identical, forms the straight wave guide length difference at the C font waveguide two ends of waveguide bend assembly A (5), waveguide bend assembly B (6).
2. a kind of compact C frequency range transmit-receive sharing double-circle polarization feed assembly according to claim 1, it is characterized in that: definition six port coupling hinge (3) main cavity circular waveguide central axis are Z direction, upper and lower two coupling gap lines of centres of six port coupling hinges (3) are Y-direction, and left and right two coupling gap lines of centres are directions X; Described T-shaped cruciform joint (7) is all positioned at six port coupling hinges (3) and receives on the offset position of dividing plate circular polarizer (9) with transmitting dividing plate circular polarizer (8);
Described offset position is that to project to subpoint line and the X-axis angle that the subpoint of XY plane and six ports coupling hinge (3) main cavity circular waveguide central axis project to XY plane be 45 degree to T-shaped cruciform joint (7) main cavity square wave guide central axis.
3. a kind of compact C frequency range transmit-receive sharing double-circle polarization feed assembly according to claim 2, is characterized in that: described offset position also comprises following three kinds of offset position situations:
(1) to project to subpoint line that the subpoint of XY plane and six ports coupling hinge (3) main cavity circular waveguide central axis project to XY plane and X-axis angle be-45 to spend to T-shaped cruciform joint (7) square wave guide central axis;
(2) to project to subpoint line that the subpoint of XY plane and six ports coupling hinge (3) main cavity circular waveguide central axis project to XY plane and X-axis angle be-135 to spend to T-shaped cruciform joint (7) square wave guide central axis;
(3) to project to subpoint line and X-axis angle that the subpoint of XY plane and six ports coupling hinge (3) main cavity circular waveguide central axis project to XY plane be 135 degree to T-shaped cruciform joint (7) square wave guide central axis.
4. a kind of compact C frequency range transmit-receive sharing double-circle polarization feed assembly according to claim 1, it is characterized in that: described transmitting dividing plate circular polarizer (8) public port is square wave guide, two rectangular waveguide ports are BJ40 standard rectangular waveguide mouth, are respectively left-hand circular polarization and right-handed circular polarization emission port.
5. a kind of compact C frequency range transmit-receive sharing double-circle polarization feed assembly according to claim 1, it is characterized in that: described reception dividing plate circular polarizer (9) public port is square wave guide, two rectangular waveguide ports are BJ70 standard rectangular waveguide mouth, are respectively left-hand circular polarization and right-handed circular polarization receiving port.
6. a kind of compact C frequency range transmit-receive sharing double-circle polarization feed assembly according to claim 1, is characterized in that: described short-circuit block adopts aluminum alloy junction member.
7. a kind of compact C frequency range transmit-receive sharing double-circle polarization feed assembly according to claim 1, is characterized in that: described four low pass filters (4) are archipelago form filter.
8. a kind of compact C frequency range transmit-receive sharing double-circle polarization feed assembly according to claim 1, is characterized in that: described waveguide impedance transforming section (11) is notch cuttype transformer section.
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| CN201420262945.6U CN203871478U (en) | 2014-05-21 | 2014-05-21 | Compact type C frequency band receiving-transmitting shared dual-circularly polarized feed source assembly |
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| CN106921045A (en) * | 2017-03-23 | 2017-07-04 | 赵泊然 | A kind of satellite communication antena suitable for Ku wave bands |
| CN106998217A (en) * | 2017-03-23 | 2017-08-01 | 西北核技术研究所 | A kind of high power capacity Microwave emission and reception device and method |
| CN109524793A (en) * | 2018-10-15 | 2019-03-26 | 中国电子科技集团公司第二十九研究所 | Compact double-circle polarization device |
| CN112259969A (en) * | 2020-10-26 | 2021-01-22 | 北京邮电大学 | Millimeter wave broadband circularly polarized feed source antenna based on super surface |
| CN113097740A (en) * | 2021-04-08 | 2021-07-09 | 上海航天测控通信研究所 | Double-frequency transmitting-receiving shared double-circular polarization feed source |
| CN113517528A (en) * | 2021-08-16 | 2021-10-19 | 中国电子科技集团公司第五十四研究所 | A dual-frequency shared power divider with a bandwidth exceeding three times the frequency |
| CN113725578A (en) * | 2021-06-22 | 2021-11-30 | 西安空间无线电技术研究所 | Compact satellite-borne multi-beam four-feed-source synthesis feed source array |
| CN113839155A (en) * | 2021-06-30 | 2021-12-24 | 西安空间无线电技术研究所 | Asymmetric minimized Ka dual-circular polarization frequency duplexer |
| CN114188689A (en) * | 2021-11-30 | 2022-03-15 | 中国电子科技集团公司第五十四研究所 | Broadband receiving and transmitting shared coaxial waveguide duplexer |
| CN114361802A (en) * | 2022-01-04 | 2022-04-15 | 上海航天测控通信研究所 | K and ka frequency band four-channel circularly polarized feed source for satellite communication antenna |
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| CN106921045A (en) * | 2017-03-23 | 2017-07-04 | 赵泊然 | A kind of satellite communication antena suitable for Ku wave bands |
| CN106998217A (en) * | 2017-03-23 | 2017-08-01 | 西北核技术研究所 | A kind of high power capacity Microwave emission and reception device and method |
| CN106998217B (en) * | 2017-03-23 | 2019-05-07 | 西北核技术研究所 | A high-power capacity microwave transmitting and receiving device and method |
| CN109524793A (en) * | 2018-10-15 | 2019-03-26 | 中国电子科技集团公司第二十九研究所 | Compact double-circle polarization device |
| CN112259969A (en) * | 2020-10-26 | 2021-01-22 | 北京邮电大学 | Millimeter wave broadband circularly polarized feed source antenna based on super surface |
| CN112259969B (en) * | 2020-10-26 | 2021-08-20 | 北京邮电大学 | A Metasurface-Based Millimeter-Wave Broadband Circularly Polarized Feed Antenna |
| CN113097740A (en) * | 2021-04-08 | 2021-07-09 | 上海航天测控通信研究所 | Double-frequency transmitting-receiving shared double-circular polarization feed source |
| CN113725578A (en) * | 2021-06-22 | 2021-11-30 | 西安空间无线电技术研究所 | Compact satellite-borne multi-beam four-feed-source synthesis feed source array |
| CN113839155A (en) * | 2021-06-30 | 2021-12-24 | 西安空间无线电技术研究所 | Asymmetric minimized Ka dual-circular polarization frequency duplexer |
| CN113517528A (en) * | 2021-08-16 | 2021-10-19 | 中国电子科技集团公司第五十四研究所 | A dual-frequency shared power divider with a bandwidth exceeding three times the frequency |
| CN114188689A (en) * | 2021-11-30 | 2022-03-15 | 中国电子科技集团公司第五十四研究所 | Broadband receiving and transmitting shared coaxial waveguide duplexer |
| CN114361802A (en) * | 2022-01-04 | 2022-04-15 | 上海航天测控通信研究所 | K and ka frequency band four-channel circularly polarized feed source for satellite communication antenna |
| CN114361802B (en) * | 2022-01-04 | 2023-06-20 | 上海航天测控通信研究所 | K and ka frequency band four-channel circularly polarized feed source for satellite communication antenna |
| CN115513671A (en) * | 2022-08-26 | 2022-12-23 | 西安空间无线电技术研究所 | Ka ultra wide band transmitting-receiving integrated special-shaped choking compact low-PIM feed system |
| CN116581550A (en) * | 2023-07-11 | 2023-08-11 | 银河航天(西安)科技有限公司 | Feed source assembly and feed source system |
| CN116581550B (en) * | 2023-07-11 | 2023-11-24 | 银河航天(西安)科技有限公司 | Feed source assembly and feed source system |
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