CN108075215B - Dual-polarized microwave coupler and dual-polarized dual-backup microwave transmission system - Google Patents
Dual-polarized microwave coupler and dual-polarized dual-backup microwave transmission system Download PDFInfo
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- CN108075215B CN108075215B CN201711468565.2A CN201711468565A CN108075215B CN 108075215 B CN108075215 B CN 108075215B CN 201711468565 A CN201711468565 A CN 201711468565A CN 108075215 B CN108075215 B CN 108075215B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 18
- 230000009977 dual effect Effects 0.000 claims abstract description 27
- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 230000010287 polarization Effects 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000005404 monopole Effects 0.000 description 3
- 101150086969 OMT1 gene Proteins 0.000 description 2
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- 101100310635 Papaver somniferum SOMT2 gene Proteins 0.000 description 2
- 101100310636 Papaver somniferum SOMT3 gene Proteins 0.000 description 2
- 101100109086 Schizosaccharomyces pombe (strain 972 / ATCC 24843) apc14 gene Proteins 0.000 description 2
- 101100462150 Sorghum bicolor EOMT gene Proteins 0.000 description 2
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- 101100161405 Zea mays AAMT3 gene Proteins 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 101100462165 Aspergillus flavus (strain ATCC 200026 / FGSC A1120 / IAM 13836 / NRRL 3357 / JCM 12722 / SRRC 167) omtA gene Proteins 0.000 description 1
- 101100215645 Aspergillus parasiticus (strain ATCC 56775 / NRRL 5862 / SRRC 143 / SU-1) aflP gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
Abstract
The invention discloses a dual-polarized microwave coupler, which comprises a first orthogonal mode coupler, a second orthogonal mode coupler, a first coupler and a second coupler; the horizontal port and the vertical port of the first orthogonal mode coupler are respectively connected with the coupling port of the first coupler and the coupling port of the second coupler, the two input/output ports of the first coupler are respectively connected with the horizontal port of the second orthogonal mode coupler and the horizontal port of the third orthogonal mode coupler, and the two input/output ports of the second coupler are respectively connected with the vertical port of the second orthogonal mode coupler and the vertical port of the third orthogonal mode coupler; the common port of the first to third orthogonal mode couplers constitutes three input/output ports of the dual polarized microwave coupler. The invention also discloses a dual-polarized double-backup microwave transmission system. The invention can split and combine the orthogonal dual-polarized microwave signals, thereby realizing the transmission and backup of the orthogonal dual-polarized microwave signals.
Description
Technical Field
The invention relates to a microwave coupler, in particular to a dual-polarized microwave coupler.
Background
There is an increasing demand for communication speeds and microwave communication systems, but communication frequency resources are limited. Under the condition of not adding new frequency resources, in order to fully utilize the frequency resources and expand the communication capacity, a dual-polarized transmission mode is adopted, which is an important and effective microwave signal transmission mode, so that a dual-polarized device is an important device for realizing dual-polarized transmission, and the device can combine two paths of polarized orthogonal linear polarized electromagnetic waves and separate the orthogonal linear polarized signals into two microwave signals, thereby having reciprocity.
A conventional microwave communication system includes a monopole microwave system as shown in fig. 1; later, a monopole backup microwave system shown in fig. 2 is developed, and backup of system data is realized by using a coupler; and a dual polarized microwave system as shown in fig. 3, which uses OMT (orthogonal mode coupler) to realize system frequency multiplexing, increasing communication capacity. However, the dual-polarized microwave system shown in fig. 3 cannot realize the backup of system data at the same time, so it is necessary to develop a dual-polarized dual-backup microwave transmission system capable of realizing the backup of system data, and the dual-polarized microwave coupler is a core component.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing a dual-polarized microwave coupler which can meet the requirements of a dual-polarized dual-backup microwave transmission system.
The technical scheme adopted by the invention specifically solves the technical problems as follows:
the dual-polarized microwave coupler comprises first to third orthogonal mode couplers, a first coupler and a second coupler; the horizontal port and the vertical port of the first orthogonal mode coupler are respectively connected with the coupling port of the first coupler and the coupling port of the second coupler, the two input/output ports of the first coupler are respectively connected with the horizontal port of the second orthogonal mode coupler and the horizontal port of the third orthogonal mode coupler, and the two input/output ports of the second coupler are respectively connected with the vertical port of the second orthogonal mode coupler and the vertical port of the third orthogonal mode coupler; the common port of the first to third orthogonal mode couplers constitutes three input/output ports of the dual polarized microwave coupler.
Preferably, the first coupler and the second coupler are both E-plane slot waveguide directional couplers, and polarization rotating structures are respectively arranged on a vertical direction port of the first orthogonal mode coupler and two input/output ports of the second coupler.
Preferably, the dual-polarized microwave coupler further comprises three input/output ports formed by circular waveguides and respectively connected with the common ports of the first to third orthogonal mode couplers.
Preferably, the first coupler and the second coupler are arranged to overlap and the connection between the quadrature mode coupler and the coupler is achieved using a set of waveguide turns.
Preferably, the dual polarized microwave coupler is assembled from three parallel independent components in a stacked manner.
Preferably, the dual-polarized microwave coupler further comprises first to third brackets respectively used for fixedly connecting the dual-polarized microwave coupler with the antenna and the two digital microwave transceivers.
The following technical scheme can be obtained according to the same invention idea:
a dual-polarized dual-backup microwave transmission system comprises an antenna and a main digital microwave transceiver and a standby digital microwave transceiver, wherein the main digital microwave transceiver and the standby digital microwave transceiver are dual-polarized digital microwave transceivers, and the main digital microwave transceiver and the standby digital microwave transceiver are connected with the antenna through the dual-polarized microwave coupler according to any technical scheme.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
the dual-polarized microwave coupler can shunt and combine the orthogonal dual-polarized microwave signals, so that the transmission and the backup of the orthogonal dual-polarized microwave signals are realized, the bandwidth of a transmission channel can be further improved through multiplexing the channels of the orthogonal polarized electromagnetic waves, and the stability and the reliability of a wireless communication channel are improved.
Drawings
FIG. 1 is a schematic diagram of a conventional monopole microwave system;
FIG. 2 is a schematic diagram of a conventional single-polarization backup microwave system;
fig. 3 is a schematic diagram of a structure of a conventional dual-polarized microwave system;
fig. 4 is a schematic block diagram of a dual polarized dual backup microwave transmission system according to the present invention;
fig. 5 is a schematic diagram of a preferred structure of the dual polarized microwave coupler of the present invention;
fig. 6 is a schematic diagram of an assembled structure of the dual polarized microwave coupler of fig. 5.
The meaning of each reference symbol in the figures is as follows:
1-3, OMT,4, 3dB coupler, 5, 3dB coupler, 6, matching load, 7, polarization rotating structure, 8, waveguide turning structure.
Detailed Description
In order to meet the use requirement of a dual-polarized dual-backup microwave transmission system, the invention provides a dual-polarized microwave coupler, which comprises first to third orthogonal mode couplers, a first coupler and a second coupler; the horizontal port and the vertical port of the first orthogonal mode coupler are respectively connected with the coupling port of the first coupler and the coupling port of the second coupler, the two input/output ports of the first coupler are respectively connected with the horizontal port of the second orthogonal mode coupler and the horizontal port of the third orthogonal mode coupler, and the two input/output ports of the second coupler are respectively connected with the vertical port of the second orthogonal mode coupler and the vertical port of the third orthogonal mode coupler; the common port of the first to third orthogonal mode couplers constitutes three input/output ports of the dual polarized microwave coupler.
The dual-polarized dual-backup microwave transmission system can be formed by connecting the antenna with the main and standby dual-polarized digital microwave transceivers by the dual-polarized microwave coupler, improves the bandwidth of a transmission channel by multiplexing the channels of orthogonal polarized electromagnetic waves, and improves the stability and reliability of a wireless communication channel.
For the convenience of public understanding, the following detailed description of the technical scheme of the invention is provided with reference to the accompanying drawings:
fig. 4 shows the basic structure and principle of the dual polarized dual backup microwave transmission system of the present invention. As shown in fig. 4, the dual-polarized dual-backup microwave transmission system comprises an Antenna (Antenna) and two dual-polarized digital microwave transceivers (Dual Diplexer ODU) which are mutually main and standby, and are connected through the dual-polarized microwave coupler (which is used as a dual-polarized microwave signal combining way in the figure, and is labeled as a dual-polarized compound router in the figure). As shown in fig. 4, the dual polarized microwave Coupler of the present invention is composed of 3 quadrature mode couplers (OMT 1 to 3) and 2 couplers (Coupler 1 and Coupler 1). As shown in fig. 4, the dual-polarized signal and OMT1 are separated into two paths of signals of horizontal H and vertical V, and the horizontal signal H outputs two signals of 3dB H1 and H2 through coupler 1; the vertical signal V outputs two 3dB V1 and V2 signals through a coupler 2; the signals H1/V1 and H2/V2 respectively enter orthogonal mode couplers OMT2 and OMT3 to realize dual polarization branching; the signal is through two orthogonal mode converter OMT2 and OMT3, output signal H1, signal V1 and signal H2, signal V2 respectively, signal H1 and signal H2 pass through coupler1 to combine way, and signal V1 and signal V2 pass through coupler2 to combine way, is through orthogonal mode coupler OMT1, realizes the combination way of dual polarized signal.
Fig. 5 shows a preferred structure of the dual polarized microwave coupler of the present invention. As shown in fig. 5, the dual polarized microwave coupler includes quadrature mode couplers 1 to 3, a 3dB coupler 4, a 3dB coupler 5, and polarization rotating structure 7, waveguide turning structure 8. The common ports of the orthogonal mode couplers 1-3 are arranged in three different directions, and a section of circular waveguide capable of receiving/transmitting mutually perpendicular dual-polarized signals is respectively connected to the common ports and used as three input/output ports of the dual-polarized microwave coupler.
In order to further improve signal transmission performance, the 3dB coupler 4 and the 3dB coupler 5 in the embodiment are identical E-plane slot waveguide directional couplers, so that the cavity and the cover plate of the coupler can be split along the E-plane of the microwave waveguide, and the microwave waveguide directional coupler is convenient to process, good in performance and stable in structure. In order to enable the vertical polarization signal to pass through the E-plane slot waveguide directional coupler, polarization rotating structures 7 are respectively arranged on a vertical direction V port of the quadrature mode coupler1 and two input/output ports of the 3dB coupler 5, so that the vertical polarization direction signal output by the quadrature mode coupler1 is converted into a horizontal polarization direction signal, and then is equally divided into two paths through the 3dB coupler 5, and is respectively converted into the vertical polarization direction signal. In order to make the structure of the dual polarized microwave coupler as compact as possible and easy to process, as shown in fig. 5, the 3dB coupler 4 and the 3dB coupler 5 are overlapped, and a group of waveguide turning structures 8 are utilized to realize connection between the input and output ends of the orthogonal mode coupler and the output and input ends of the coupler. The figure 6 is a matching load to which the isolated ports of two E-plane slot waveguide directional couplers are connected.
In this embodiment, the 3 orthogonal mode couplers, the 2 3dB couplers, the polarization rotation structure and the waveguide turning structure are structurally realized by the cavity structure of the dual-polarized microwave combiner, as shown in fig. 6, the cavity structure is decomposed into 3 parts which are convenient to process and are parallel to each other: the cavity 1, the cavity 2 and the cavity 3 are assembled by overlapping.
In order to facilitate system installation, three brackets are also configured for the dual polarized microwave coupler in this embodiment: the bracket 1 is used for installing and fixing the dual-polarized microwave combiner on the microwave antenna; the holders 2 and 3 are for mounting ODUs.
The dual-polarized microwave coupler is mainly applied to a microwave point-to-point communication or satellite communication system, and can realize the branching, combining and backup functions of two paths of signals which have the same frequency, orthogonal polarization and mutual isolation; the system not only efficiently utilizes the frequency resource of the channel and increases the communication capacity, but also provides a backup channel, so that the system is more stable.
Claims (7)
1. A dual-polarized microwave coupler is characterized by comprising first to third orthogonal mode couplers, a first coupler and a second coupler; the horizontal port and the vertical port of the first orthogonal mode coupler are respectively connected with the coupling port of the first coupler and the coupling port of the second coupler, the two input/output ports of the first coupler are respectively connected with the horizontal port of the second orthogonal mode coupler and the horizontal port of the third orthogonal mode coupler, and the two input/output ports of the second coupler are respectively connected with the vertical port of the second orthogonal mode coupler and the vertical port of the third orthogonal mode coupler; the common port of the first to third orthogonal mode couplers constitutes three input/output ports of the dual polarized microwave coupler.
2. The dual polarized microwave coupler of claim 1, wherein the first coupler and the second coupler are E-plane slot waveguide directional couplers, and polarization rotating structures are respectively disposed on a vertical direction port of the first quadrature mode coupler and two input/output ports of the second coupler.
3. The dual polarized microwave coupler of claim 1, further comprising three input/output ports formed by circular waveguides connected to the common ports of the first through third quadrature mode couplers, respectively.
4. The dual polarized microwave coupler of claim 1 wherein the first coupler and the second coupler are arranged to overlap and the connection between the quadrature mode coupler and the coupler is accomplished using a set of waveguide turns.
5. The dual polarized microwave coupler of claim 1, wherein the dual polarized microwave coupler is fabricated from a stack of three parallel independent components.
6. The dual polarized microwave coupler of claim 1, further comprising first through third brackets for fixedly connecting the dual polarized microwave coupler to the antenna and the two digital microwave transceivers, respectively.
7. A dual-polarized dual-backup microwave transmission system comprising an antenna and a main digital microwave transceiver and a standby digital microwave transceiver, wherein the main digital microwave transceiver and the standby digital microwave transceiver are dual-polarized digital microwave transceivers, and the main digital microwave transceiver and the standby digital microwave transceiver are connected with the antenna through a dual-polarized microwave coupler according to any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711468565.2A CN108075215B (en) | 2017-12-29 | 2017-12-29 | Dual-polarized microwave coupler and dual-polarized dual-backup microwave transmission system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711468565.2A CN108075215B (en) | 2017-12-29 | 2017-12-29 | Dual-polarized microwave coupler and dual-polarized dual-backup microwave transmission system |
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| CN108075215A CN108075215A (en) | 2018-05-25 |
| CN108075215B true CN108075215B (en) | 2023-10-27 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104617364A (en) * | 2015-01-21 | 2015-05-13 | 江苏贝孚德通讯科技股份有限公司 | Integrated waveguide radio frequency front-end component |
| CN205646080U (en) * | 2016-02-17 | 2016-10-12 | 西安普天天线有限公司 | Microwave antenna is two to be received and twoly sends out combiner special |
| CN207800863U (en) * | 2017-12-29 | 2018-08-31 | 江苏贝孚德通讯科技股份有限公司 | Dual polarization micro-wave coupler, dual polarization double copies microwave transmission system |
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2017
- 2017-12-29 CN CN201711468565.2A patent/CN108075215B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104617364A (en) * | 2015-01-21 | 2015-05-13 | 江苏贝孚德通讯科技股份有限公司 | Integrated waveguide radio frequency front-end component |
| CN205646080U (en) * | 2016-02-17 | 2016-10-12 | 西安普天天线有限公司 | Microwave antenna is two to be received and twoly sends out combiner special |
| CN207800863U (en) * | 2017-12-29 | 2018-08-31 | 江苏贝孚德通讯科技股份有限公司 | Dual polarization micro-wave coupler, dual polarization double copies microwave transmission system |
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| CN108075215A (en) | 2018-05-25 |
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