CN114844513A - Loopback amplitude adjustable design for realizing 7-8GHz multi-band waveguide duplexer by radio frequency cable - Google Patents
Loopback amplitude adjustable design for realizing 7-8GHz multi-band waveguide duplexer by radio frequency cable Download PDFInfo
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- CN114844513A CN114844513A CN202210461631.8A CN202210461631A CN114844513A CN 114844513 A CN114844513 A CN 114844513A CN 202210461631 A CN202210461631 A CN 202210461631A CN 114844513 A CN114844513 A CN 114844513A
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- 238000013461 design Methods 0.000 title claims abstract description 16
- 230000008878 coupling Effects 0.000 claims abstract description 12
- 238000010168 coupling process Methods 0.000 claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
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- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention relates to the technical field of microwave communication technology components, in particular to a Loopback amplitude adjustable design of a 7-8GHz multiband waveguide duplexer, which comprises a public end, a cable, a narrow channel and a receiving end, wherein the narrow channel for placing the cable is arranged between the public end and the receiving end to carry out leakage coupling on the source end, and the cable generates a Loopback function between the receiving channel and a transmitting channel.
Description
Technical Field
The invention relates to the technical field of microwave communication technology components, in particular to a loopback amplitude adjustable design of a 7-8GHz multiband waveguide duplexer realized by a radio frequency cable.
Background
The duplexer belongs to a microwave passive device, can solve the problem that a transceiver shares a pair of antennas, simultaneously realizes the separation of transmitting and receiving signals, and is mainly used for connecting the antennas and a transmitting and receiving system. As technology and communication requirements develop, contemporary electronic communication systems require the addition of self-test and calibration functions.
Whether in a multi-system scheme or a microwave transceiving system structure, a connection mode between an antenna waveguide and a duplexer has hidden troubles, so in order to ensure the normal operation of the system in the communication field, a loop-back channel of the duplexer is required to be added to carry out function monitoring on communication equipment and detect whether the equipment normally receives and transmits signals.
Based on the reasons, the invention designs the loopback amplitude adjustable design of the radio frequency cable for realizing the 7-8GHz multiband waveguide duplexer, compared with the traditional resonant cavity windowing coupling, the design cost, the processing method and the complexity are greatly optimized, and the invention has the advantages of adjustable loopback amplitude, strong stability, more covering frequency bands, small loopback fluctuation, high out-of-band inhibition flatness, no influence of internal space and cavity arrangement and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a loopback amplitude adjustable design of a radio frequency cable for realizing a 7-8GHz multiband waveguide duplexer, compared with the traditional resonant cavity windowing coupling, the design cost, the processing method and the complexity are greatly optimized, and the invention has the advantages of loopback adjustability, strong stability, multiple covering frequency bands, small loopback fluctuation, high out-of-band inhibition flatness, no influence of internal space, cavity layout and the like.
In order to achieve the purpose, the invention provides a loopback amplitude adjustable design of a radio frequency cable for realizing a 7-8GHz multiband waveguide duplexer, which comprises a public end, a cable, a narrow channel and a receiving end, wherein the narrow channel for placing the cable is arranged between the public end and the receiving end to carry out leakage coupling on a source end, and the cable generates a loopback function between a receiving channel and a transmitting channel.
Compared with the prior art, the invention adopts the radio frequency cable to be placed in the narrow channels of the common end and the receiving end of the duplexer for the leakage coupling of the source end, so that the out-of-band rejection of the Loopback end of the duplexer becomes flat, the fluctuation range is smaller, and the detection of the signal of the transmitting end is realized.
The invention has the following beneficial effects:
1. the structure is more simplified, the system materials are reduced, and the system cost is reduced.
2. The space structure is optimized without the restriction of the layout position of the receiving end and the public end row cavity.
3. The same design can cover different bandwidths, the loopback is adjustable, and the stability is strong.
Drawings
Fig. 1 is a diagram illustrating a conventional duplexer cavity windowing coupling.
Fig. 2 is a coupling diagram of the duplexer of the present invention.
Fig. 3 is a schematic diagram of a loopback frequency response curve of the 7GHz duplexer rf cable according to the present invention.
Fig. 4 is a schematic diagram of a loopback frequency response curve of the 8GHz duplexer rf cable according to the present invention.
Description of reference numerals:
1 is the public end, 2 is the cable, 3 is the throat, 4 is the receiving end.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
Referring to fig. 1-4, the invention provides a loopback amplitude adjustable design of a radio frequency cable for realizing a 7-8GHz multiband waveguide duplexer, referring to fig. 2, the loopback amplitude adjustable design comprises a public end 1, a cable 2, a narrow channel 3 and a receiving end 4, the narrow channel 3 for placing the cable 2 is arranged between the public end 1 and the receiving end 4 for leakage coupling of a source end, and the cable 2 generates a loopback function between a receiving channel and a transmitting channel.
Example (b):
the existing traditional method is to add a directional coupler with high isolation degree at the front end of the transceiver to realize the input of the self-checking signal detection and calibration signal, and although the method meets the requirement, the method increases the volume, the weight, the complexity and the cost of the system, and also reduces the transmission power of the system, so that the overall performance of the system is reduced.
As shown in fig. 1, a commonly used structure using window coupling is used to implement the loopback function, but the loopback implementation limit of the window coupling is large, the size accuracy of the window directly affects the amplitude and the flat graph of the loopback, and the filter at the receiving end of the duplexer needs to be arranged very close to the common port, which may generate an additional signal leakage risk.
As shown in fig. 2, in the present invention, a throat 3 is disposed between a common terminal 1 and a receiving terminal 4, and then a radio frequency cable 2 is disposed in the throat 3, and the radio frequency cable 2 connects the common terminal 1 and the receiving terminal 4 to form coupling, so as to implement a loopback detection function of a transmitting channel signal at the receiving terminal without additionally using a directional coupler.
As shown in fig. 3 and 4, according to the design of the present invention, the frequency response curves after the tuning and measurement of the radio frequency cables placed at 7GHz and 8GHz can be seen that the out-of-band rejection becomes flat, and the ring-back fluctuation in the bandwidth of the transmitting end is small.
The above is only a preferred embodiment of the present invention, and is only used to help understand the method and the core idea of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
The invention integrally solves a series of problems that the volume, the weight, the complexity and the cost of a system are increased, the transmitting power of the system is reduced, the overall performance of the system is reduced and the like because a directional coupler with high isolation is additionally arranged at a transmitting and receiving front end in the prior art to realize the input of a self-checking signal detection and a calibration signal, and realizes the loopback detection function of a transmitting channel signal at a receiving end by reserving a narrow channel between a public end and the receiving end for placing a cable. Meanwhile, the design can cover different bandwidths, the stability is high, the fluctuation range of the inner loop in the bandwidth of the transmitting end is small, the calibration and self-checking functions of the system are realized, and the engineering application value is good.
Claims (1)
1. The utility model provides a radio frequency cable realizes 7-8GHz multifrequency section waveguide duplexer loopback amplitude adjustable design which characterized in that, includes common port (1), cable (2), lane (3) and receiving terminal (4), it leaks the coupling to be provided with lane (3) of placing cable (2) between common port (1) and receiving terminal (4) to the source end, cable (2) produce the loopback function between receiving channel and the transmitting channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210461631.8A CN114844513A (en) | 2022-04-28 | 2022-04-28 | Loopback amplitude adjustable design for realizing 7-8GHz multi-band waveguide duplexer by radio frequency cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210461631.8A CN114844513A (en) | 2022-04-28 | 2022-04-28 | Loopback amplitude adjustable design for realizing 7-8GHz multi-band waveguide duplexer by radio frequency cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114844513A true CN114844513A (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210461631.8A Pending CN114844513A (en) | 2022-04-28 | 2022-04-28 | Loopback amplitude adjustable design for realizing 7-8GHz multi-band waveguide duplexer by radio frequency cable |
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| Country | Link |
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| CN (1) | CN114844513A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201008016Y (en) * | 2007-03-05 | 2008-01-16 | 深圳国人通信有限公司 | Clutter suppression type low-loss high-selectivity duplex filter |
| CN201008015Y (en) * | 2007-03-05 | 2008-01-16 | 深圳国人通信有限公司 | Standing wave detection low-loss high-selectivity duplex filter |
| US20100244979A1 (en) * | 2008-12-26 | 2010-09-30 | Fujitsu Limited | Duplexer, substrate for duplexer, and electronic apparatus |
| CN102136971A (en) * | 2011-03-07 | 2011-07-27 | 华为技术有限公司 | Loopback detection device and method |
| US20140273891A1 (en) * | 2011-12-02 | 2014-09-18 | Huawei Technologies Co., Ltd. | Transceiver Arrangement |
| CN208208945U (en) * | 2018-05-31 | 2018-12-07 | 苏州赫斯康通信科技有限公司 | Built-in isolator waveguide loopback duplexer |
| CN111684730A (en) * | 2018-02-02 | 2020-09-18 | 维尔塞特公司 | Radio frequency loopback for transceivers |
| US20210242552A1 (en) * | 2018-06-11 | 2021-08-05 | The Trustees Of Columbia University In The City Of New York | Circuits and methods for circulators including a plurality of cancellation paths |
-
2022
- 2022-04-28 CN CN202210461631.8A patent/CN114844513A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201008016Y (en) * | 2007-03-05 | 2008-01-16 | 深圳国人通信有限公司 | Clutter suppression type low-loss high-selectivity duplex filter |
| CN201008015Y (en) * | 2007-03-05 | 2008-01-16 | 深圳国人通信有限公司 | Standing wave detection low-loss high-selectivity duplex filter |
| US20100244979A1 (en) * | 2008-12-26 | 2010-09-30 | Fujitsu Limited | Duplexer, substrate for duplexer, and electronic apparatus |
| CN102136971A (en) * | 2011-03-07 | 2011-07-27 | 华为技术有限公司 | Loopback detection device and method |
| US20140273891A1 (en) * | 2011-12-02 | 2014-09-18 | Huawei Technologies Co., Ltd. | Transceiver Arrangement |
| CN111684730A (en) * | 2018-02-02 | 2020-09-18 | 维尔塞特公司 | Radio frequency loopback for transceivers |
| CN208208945U (en) * | 2018-05-31 | 2018-12-07 | 苏州赫斯康通信科技有限公司 | Built-in isolator waveguide loopback duplexer |
| US20210242552A1 (en) * | 2018-06-11 | 2021-08-05 | The Trustees Of Columbia University In The City Of New York | Circuits and methods for circulators including a plurality of cancellation paths |
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