CN107681241B - Double-channel cavity coupler with same-frequency combining function - Google Patents
Double-channel cavity coupler with same-frequency combining function Download PDFInfo
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- CN107681241B CN107681241B CN201711173214.9A CN201711173214A CN107681241B CN 107681241 B CN107681241 B CN 107681241B CN 201711173214 A CN201711173214 A CN 201711173214A CN 107681241 B CN107681241 B CN 107681241B
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- 238000010168 coupling process Methods 0.000 claims abstract description 120
- 238000005859 coupling reaction Methods 0.000 claims abstract description 120
- 238000002955 isolation Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000004891 communication Methods 0.000 abstract description 6
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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- 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
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Abstract
The invention provides a double-channel cavity coupler with the same-frequency combining function and a working method, wherein the double-channel cavity coupler comprises a cavity; the outside of the cavity is connected with the first input port, the second input port, the first output port, the second output port and the coupling port; the cavity is internally provided with a first group of coupling strips, a second group of coupling strips and a load resistor; the input end of the first group of coupling strips is connected with the first input port, the output end of the first group of coupling strips is connected with the first output port, the coupling end of the first group of coupling strips is connected with the coupling port of the double-channel cavity coupler, and the isolation end of the first group of coupling strips is connected with the coupling end of the second group of coupling strips; the input end of the second group of coupling strips is connected with the second input port, the output end is connected with the second output port, and the isolation end is connected with the load resistor. The invention has the advantages of simple and compact structure, small volume, low cost, high stability, good isolation performance, no attenuation of the signal of the same-frequency combining part, convenient processing and the like. The method is mainly used for coupling out partial signals from two paths of common-frequency signals in a communication system for combining and outputting.
Description
Technical Field
The invention relates to the field of cellular mobile communication, in particular to a double-channel cavity coupler with a common-frequency combining function.
Background
In recent years, with the advent of large-scale markets, hotels, subways and the like, indoor distribution systems have also presented new features, and in order to increase the construction speed of a communication network and reduce the cost of repeated construction, modes of sharing a signal distribution system by multiple communication systems have been widely used. Sometimes, partial signals are coupled out from two paths of same-frequency signals for combining, and other signals are normally transmitted; in this case, a system is usually required to be composed of two couplers and a common-frequency combiner (3 dB bridge), and as a result, the system is bulky, interfaces are numerous, the cost is high, and the attenuation of the common-frequency combiner part signal is large (more than 3 dB). Therefore, the double-channel cavity coupler with the same-frequency combining function can meet the requirement that all coupled partial signals in two paths of same-frequency signals are combined and output, and the same-frequency combined partial signals are not attenuated.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a double-channel cavity coupler with the same-frequency combining function. Two paths of common-frequency signals are respectively coupled out of part of signals to be output in a combined way in one component, and the common-frequency combined part of signals are not attenuated.
The invention adopts the following technical scheme: a double-channel cavity coupler with the same-frequency combining function is characterized in that: comprises a cavity; the outside of the cavity is connected with the first input port, the second input port, the first output port, the second output port and the coupling port; the cavity is internally provided with a first group of coupling strips, a second group of coupling strips and a load resistor; the input end of the first group of coupling strips is connected with the first input port, the output end of the first group of coupling strips is connected with the first output port, the coupling end of the first group of coupling strips is connected with the coupling port of the double-channel cavity coupler, and the isolation end of the first group of coupling strips is connected with the coupling end of the second group of coupling strips; the input end of the second group of coupling strips is connected with the second input port, the output end is connected with the second output port, and the isolation end is connected with the load resistor.
In an embodiment of the present invention, the signals of the first input port, the second input port, the first output port, the second output port, and the coupling port have the same frequency.
The invention also provides a double-channel cavity coupler with the same-frequency combining function, and the working method thereof comprises the following steps: the 1 st group of partial signals are coupled with the 1 st group of signals through the first input port and the first group of coupling strips, and the rest 1 st group of signals are output to the first output port; the 2 nd group of partial signals are connected with the isolation end of the first group of coupling strips through the second input port and the coupling end of the second group of coupling strips, and then are connected with the coupling port through the coupling end of the first group of coupling strips, and the rest 2 nd group of signals are output to the second output port; the coupling degree of the signals of the 2 groups reaching the common coupling port is equal by adjusting the coupling degree of the second group of coupling strips.
Compared with the prior art, the invention provides the double-channel cavity coupler with the same-frequency combining function. The device has the advantages of simple and compact structure, small volume, low cost, high stability, good isolation performance, no attenuation of the signal of the same-frequency combining part, convenience in processing and the like. The method is mainly used for coupling out partial signals from two paths of common-frequency signals in a communication system for combining and outputting.
Drawings
Fig. 1 is a structural topology of an embodiment of the present invention.
FIG. 2 is a diagram of simulation results according to an embodiment of the present invention.
Fig. 3 is a schematic diagram illustrating an internal structure of an embodiment of the present invention.
Fig. 4 is a schematic side view of an embodiment of the present invention.
Detailed Description
The invention is further illustrated by the following description in conjunction with the accompanying drawings and specific embodiments.
The invention provides a double-channel cavity coupler with the same-frequency combining function, which comprises a cavity; the outside of the cavity is connected with the first input port, the second input port, the first output port, the second output port and the coupling port; the cavity is internally provided with a first group of coupling strips, a second group of coupling strips and a load resistor; the input end of the first group of coupling strips is connected with the first input port, the output end of the first group of coupling strips is connected with the first output port, the coupling end of the first group of coupling strips is connected with the coupling port of the double-channel cavity coupler, and the isolation end of the first group of coupling strips is connected with the coupling end of the second group of coupling strips; the input end of the second group of coupling strips is connected with the second input port, the output end is connected with the second output port, and the isolation end is connected with the load resistor.
In an embodiment of the present invention, the signals of the first input port, the second input port, the first output port, the second output port, and the coupling port have the same frequency.
The invention relates to a double-channel cavity coupler with the same-frequency combining function, which is a coupler with two identical required coupling degrees manufactured in a cavity. In one embodiment of the present invention, the above functions are implemented in the topology shown in fig. 1, taking a two-way 10dB coupler as an example. The coupling port of the first path of 10dB coupler is used as an output coupling port of the double-path cavity coupler, the input port and the output port of the double-path cavity coupler are respectively an input port and an output port of the double-path cavity coupler, and the isolation port is connected with the coupling port of the second path of 10dB coupler; the input port and the output port of the second path 10dB coupler are respectively an input port and an output port of the double-path cavity coupler. After simulation by using computer simulation software, the result is shown in fig. 2, the isolation between the input port of the first path 10dB coupler and the input port of the second path 10dB coupler is greater than 25dB, the isolation between the output port of the first path 10dB coupler and the output port of the second path 10dB coupler is greater than 25dB, the isolation between the input port of the first path 10dB coupler and the output port of the second path 10dB coupler is greater than 30dB, the isolation between the input port of the second path 10dB coupler and the output port of the first path 10dB coupler is 20dB, the coupling between the input port of the first path 10dB coupler and the coupling port of the first path 10dB coupler is 10dB, and the coupling between the input port of the second path 10dB coupler and the coupling port of the first path 10dB coupler is 10dB. Under the action of the first group of coupling strips 8 and the second group of coupling strips 9, the coupling and combining output of the same-frequency signals is realized, the processing cost is reduced, and the number of communication devices of the indoor distribution system is reduced.
Further, in an embodiment of the present invention, the schematic internal structure of the dual-path cavity coupler is shown in fig. 3, and the schematic side structure is shown in fig. 4. The double-path cavity coupler comprises a cavity 1, wherein the cavity is externally connected with a first input port 2, a second input port 5, a first output port 4, a second output port 3 and a coupling port 6, and a first group of coupling strips 8, a second group of coupling strips 9 and a load resistor 7 are arranged in the cavity. The input end of the first group of coupling strips 8 is connected with a first input port, the output end of the first group of coupling strips is connected with a first output port 4, the coupling end of the first group of coupling strips is connected with the coupling port 6 of the double-channel cavity coupler, and the isolation end of the first group of coupling strips is connected with the coupling end of the second group of coupling strips 9; the input end of the second group of coupling strips 9 is connected with the second input port 5, the output end is connected with the second output port 3, and the isolation end is connected with the load resistor 7. Under the action of the first group of coupling strips 8 and the second group of coupling strips 9, the coupling and combining output of the same-frequency signals is realized, the processing cost is reduced, and the number of communication devices of the indoor distribution system is reduced.
The invention also provides a double-channel cavity coupler with the same-frequency combining function, and the working method thereof comprises the following steps: the 1 st group of partial signals are coupled with the 1 st group of signals through the first input port and the first group of coupling strips, and the rest 1 st group of signals are output to the first output port; the 2 nd group of partial signals are connected with the isolation end of the first group of coupling strips through the second input port and the coupling end of the second group of coupling strips, and then are connected with the coupling port through the coupling end of the first group of coupling strips, and the rest 2 nd group of signals are output to the second output port; because the paths of the 2 groups of signals reaching the common coupling port are different, the coupling degree of the second group of coupling strips is slightly adjusted appropriately, so that the fact that the coupling degrees of the 2 groups of signals reaching the common coupling port are approximately equal can be satisfied.
The above is a preferred embodiment of the present invention, and all changes made according to the technical solution of the present invention belong to the protection scope of the present invention when the generated functional effects do not exceed the scope of the technical solution of the present invention.
Claims (1)
1. A double-channel cavity coupler with the same-frequency combining function is characterized in that: comprises a cavity; the outside of the cavity is connected with the first input port, the second input port, the first output port, the second output port and the coupling port; the cavity is internally provided with a first group of coupling strips, a second group of coupling strips and a load resistor; the input end of the first group of coupling strips is connected with the first input port, the output end of the first group of coupling strips is connected with the first output port, the coupling end of the first group of coupling strips is connected with the coupling port of the double-channel cavity coupler, and the isolation end of the first group of coupling strips is connected with the coupling end of the second group of coupling strips; the input end of the second group of coupling strips is connected with a second input port, the output end of the second group of coupling strips is connected with a second output port, and the isolation end of the second group of coupling strips is connected with a load resistor;
the signals of the first input port, the second input port, the first output port, the second output port and the coupling port have the same frequency;
the working method of the double-channel cavity coupler with the same-frequency combining function comprises the following steps: the 1 st group of partial signals are coupled with the 1 st group of signals through the first input port and the first group of coupling strips, and the rest 1 st group of signals are output to the first output port; the 2 nd group of partial signals are connected with the isolation end of the first group of coupling strips through the second input port and the coupling end of the second group of coupling strips, and then are connected with the coupling port through the coupling end of the first group of coupling strips, and the rest 2 nd group of signals are output to the second output port; the coupling degree of the 2 groups of signals reaching the common coupling port is equal by adjusting the coupling degree of the second group of coupling strips;
the two-way cavity coupler with the same-frequency combining function has no attenuation on the signal of the same-frequency combining part;
the manufacturing method of the double-channel cavity coupler with the same-frequency combining function comprises the following steps: two paths of couplers with the same required coupling degree are manufactured in one cavity, and the topological structure is as follows: the coupling port of the first path of coupler is used as an output coupling port of the double-path cavity coupler, the input port and the output port of the coupling port are respectively a first input port and a first output port of the double-path cavity coupler, and the isolation port of the first path of coupler is connected with the coupling port of the second path of coupler; the input port and the output port of the second path coupler are respectively a second input port and a second output port of the double-path cavity coupler.
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| CN201711173214.9A CN107681241B (en) | 2017-11-22 | 2017-11-22 | Double-channel cavity coupler with same-frequency combining function |
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| CN201711173214.9A CN107681241B (en) | 2017-11-22 | 2017-11-22 | Double-channel cavity coupler with same-frequency combining function |
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| CN107681241B true CN107681241B (en) | 2023-11-03 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109982339B (en) * | 2017-12-28 | 2022-02-25 | 中国电信股份有限公司 | Indoor distribution system |
| CN113629373B (en) * | 2020-05-06 | 2022-11-01 | 中国电信股份有限公司 | Coupler, loop indoor distribution system and signal equalization method |
| CN114679693B (en) * | 2022-03-22 | 2023-12-19 | 中国电信股份有限公司 | Coupling device and chamber division system |
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