CN212991278U - Coupling circuit, coupler and communication device - Google Patents
Coupling circuit, coupler and communication device Download PDFInfo
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- CN212991278U CN212991278U CN202021818307.XU CN202021818307U CN212991278U CN 212991278 U CN212991278 U CN 212991278U CN 202021818307 U CN202021818307 U CN 202021818307U CN 212991278 U CN212991278 U CN 212991278U
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Abstract
The application discloses a coupling circuit, a coupler and a communication device. The coupling circuit includes: the device comprises a coupling line, a first potentiometer, an isolation port, a coupling port and an adjusting circuit; the coupling line is coupled with the main transmission line, one end of the coupling line is connected with the adjusting circuit, the other end of the coupling line is coupled with the coupling port, the first end of the first potentiometer is connected with the adjusting circuit, and the second end of the first potentiometer is connected with the isolating port; the coupling line is used for acquiring a coupling signal from the main transmission line and transmitting the coupling signal to the coupling port, and the adjusting circuit is used for adjusting the parasitic capacitance and/or the parasitic inductance of the isolation port so as to adjust the sensitivity of the first potentiometer; wherein the coupling circuit is arranged on the circuit board. By the method, the sensitivity of debugging of the first potentiometer can be effectively controlled, the process is convenient to process and debug, the consistency is good, and the production efficiency can be improved.
Description
Technical Field
The present application relates to the field of radio frequency technologies, and in particular, to a coupling circuit, a coupler, and a communication device.
Background
In microwave communication systems, it is necessary to monitor the transmitted power and the reflected power. The coupler is a device with directional transmission characteristic, and the essence of the coupler is to distribute power of microwave signals according to a certain proportion. It can divide power from forward wave of main transmission system according to a certain proportion, and basically does not divide power from backward wave, and can be used for isolating, separating and mixing signal and sampling power signal.
The inventor of the present application found in long-term research and development work that the isolation of the coupler can be changed by adjusting the resistance of the isolation terminal potential, and the higher the isolation, the better the direction selection of the coupler. However, the conventional potentiometer has parasitic capacitance and parasitic inductance and has frequency response characteristics, so that the debugging sensitivity of the potentiometer is difficult to control, the processing difficulty is high, and the consistency is poor.
SUMMERY OF THE UTILITY MODEL
The main technical problem that solves of this application is how to realize the effective control of keeping apart port potentiometre sensitivity, reduces the technology processing degree of difficulty, improves the uniformity, improves production efficiency.
In order to solve the technical problem, the application adopts a technical scheme that: a coupling circuit is provided. The coupling circuit includes: the device comprises a coupling line, a first potentiometer, an isolation port, a coupling port and an adjusting circuit; the coupling line is coupled with the main transmission line, one end of the coupling line is connected with the adjusting circuit, the other end of the coupling line is coupled with the coupling port, the first end of the first potentiometer is connected with the adjusting circuit, and the second end of the first potentiometer is connected with the isolating port; the coupling line is used for acquiring a coupling signal from the main transmission line and transmitting the coupling signal to the coupling port, and the adjusting circuit is used for adjusting the parasitic capacitance and/or the parasitic inductance of the isolation port so as to adjust the sensitivity of the first potentiometer; wherein the coupling circuit is arranged on the circuit board.
Optionally, the adjusting circuit includes a first resistor, one end of the coupling line is connected to one end of the first resistor, and the other end of the first resistor is connected to the first end of the first potentiometer.
Optionally, the adjusting circuit further includes a second resistor, one end of the second resistor is connected to the first end of the first potentiometer, and the other end of the second resistor is grounded.
Optionally, the adjusting circuit includes a second resistor, one end of the coupling line is connected to one end of the second resistor, the other end of the second resistor is grounded, and the first end of the first potentiometer is connected to one end of the second resistor.
Optionally, the coupling circuit further comprises: the first end of the second potentiometer is connected with the other end of the coupling line, and the second end of the second potentiometer is coupled with the coupling port; the coupling circuit further comprises: one end of the third resistor is connected with the second end of the second potentiometer, and the other end of the third resistor is grounded; one end of the first capacitor is connected with the other end of the coupling line, and the other end of the first capacitor is grounded; one end of the second capacitor is connected with the second end of the second potentiometer, and the other end of the second capacitor is connected with the coupling port; one end of the third capacitor is connected with the other end of the second capacitor, and the other end of the third capacitor is grounded; and one end of the fourth capacitor is connected with the other end of the second capacitor, and the other end of the fourth capacitor is grounded.
Optionally, the coupling circuit further includes a microstrip line, and the second end of the second potentiometer is coupled to the coupling port through the microstrip line.
Optionally, the resistance of the first resistor is in a range of 0 Ω -100 Ω, and the resistance of the second resistor is in a range of 50 Ω -1 Μ Ω.
Optionally, the first resistor is a chip resistor, and the second resistor is a chip resistor.
In order to solve the above technical problem, another technical solution adopted by the present application is: a coupler is provided. The coupler includes: an input port and an output port; one end of the main transmission line is connected with the input port, the other end of the main transmission line is connected with the output port, and the main transmission line is used for outputting the radio-frequency signal from the input port to the output port; the coupling circuit is used for acquiring the coupling signal from the main transmission line and outputting the coupling signal to the coupling port.
In order to solve the above technical problem, another technical solution adopted by the present application is: there is provided a communication device comprising the coupler described above.
The beneficial effect of this application is: different from the prior art, the coupling circuit of the embodiment of the application comprises: the device comprises a coupling line, a first potentiometer, an isolation port, a coupling port and an adjusting circuit; the coupling line is coupled with the main transmission line, one end of the coupling line is connected with the adjusting circuit, the other end of the coupling line is coupled with the coupling port, the first end of the first potentiometer is connected with the adjusting circuit, and the second end of the first potentiometer is connected with the isolating port; the coupling line is used for acquiring a coupling signal from the main transmission line and transmitting the coupling signal to the coupling port, and the adjusting circuit is used for adjusting the parasitic capacitance and/or the parasitic inductance of the isolation port so as to adjust the sensitivity of the first potentiometer; wherein the coupling circuit is arranged on the circuit board. In this way, the coupling circuit in the embodiment of the application is provided with the adjusting circuit between the coupling line and the first potentiometer of the isolation port, so that the parasitic capacitance and/or the parasitic inductance of the isolation port can be adjusted, the parasitic capacitance and the parasitic inductance of the isolation port can be effectively controlled, the sensitivity of the first potentiometer of the isolation port can be effectively controlled, the difficulty in process processing and debugging can be reduced, the consistency is good, and the production efficiency can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of a coupler according to the present application;
FIG. 2 is a schematic circuit diagram of an embodiment of a coupling circuit of the present application;
FIG. 3 is a schematic diagram of a circuit board structure of the coupling circuit of the embodiment of FIG. 2;
FIG. 4 is a schematic circuit diagram of an embodiment of a coupling circuit of the present application;
FIG. 5 is a schematic circuit diagram of an embodiment of a coupling circuit of the present application;
FIG. 6 is a schematic circuit diagram of an embodiment of a coupling circuit of the present application;
fig. 7 is a schematic structural diagram of an embodiment of a communication device according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first" and "second" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The present application first provides a coupler, as shown in fig. 1, fig. 1 is a schematic structural diagram of an embodiment of the coupler of the present application. The coupler 101 of the present embodiment includes: the radio frequency amplifier comprises an input port 104, an output port 105, a main transmission line 102 and a coupling circuit 110, wherein one end of the main transmission line 102 is connected with the input port 104, the other end of the main transmission line 102 is connected with the output port 105, and the main transmission line 102 is used for outputting a radio frequency signal from the input port 104 to the output port 105; the coupling circuit 110 is configured to obtain a coupled signal from the main transmission line 102 and output the coupled signal to the coupling port a 2. Wherein the coupling circuit 110 is further provided with an isolated port a 1.
The coupler 101 of the present embodiment further includes: a circuit board (not shown) on which the coupling circuit 110 is disposed.
The present application further provides a coupling circuit for a coupler, as shown in fig. 2 and fig. 3, fig. 2 is a schematic circuit structure diagram of an embodiment of the coupling circuit of the present application; fig. 3 is a schematic diagram of a circuit board structure of the coupling circuit of the embodiment of fig. 2. The coupling circuit 110 of the present embodiment can be used for the coupler 101, and the coupling circuit 110 of the present embodiment includes: the circuit comprises a coupling line 111, a first potentiometer RV1, an isolation port A1, a coupling port A2 and an adjusting circuit 112; the coupling line 111 is coupled to the main transmission line 102 (as shown in fig. 1), one end of the coupling line 111 is connected to the adjusting circuit 112, the other end of the coupling line 111 is coupled to the coupling port a2, a first end of the first potentiometer RV1 is connected to the adjusting circuit 112, and a second end of the first potentiometer RV1 is connected to the isolating port a 1; the coupling line 111 is used for acquiring a coupling signal from the main transmission line 102 and transmitting the coupling signal to the coupling port a2, and the adjusting circuit 112 is used for adjusting the parasitic capacitance and/or parasitic inductance of the isolation port a1 so as to adjust the sensitivity of the first potentiometer RV 1.
Different from the prior art, the coupling circuit 110 of this embodiment sets the adjusting circuit 112 between the coupling line 111 and the first potentiometer RV1 of the isolation port a1, can adjust the parasitic capacitance and the parasitic inductance of the isolation port a1, and can control the parasitic capacitance and/or the parasitic inductance of the isolation port a1, so as to effectively control the parasitic capacitance and the parasitic inductance of the isolation port a1, so that the sensitivity of the first potentiometer RV1 of the isolation port a1 can be effectively controlled, the difficulty in debugging of process processing can be reduced, the consistency is good, and the production efficiency can be improved.
The coupling line 111 of the present embodiment is a microstrip line. The microstrip line can be realized by arranging the copper plating layer on the circuit board, and the impedance of the microstrip line can be adjusted by adjusting the width, the length, the thickness and the like of the copper plating layer.
In other embodiments, coaxial lines, rectangular waveguides, or striplines, etc. may also be used instead of microstrip lines.
Optionally, the adjusting circuit 112 of the present embodiment includes a first resistor R1 and a second resistor R2, wherein one end of the coupling line 111 is connected to one end of the first resistor R1, and the other end of the first resistor R1 is connected to a first end of the first potentiometer RV 1; one end of the second resistor R2 is connected to a first end of the first potentiometer RV1, and the other end of the second resistor R2 is grounded.
Further, a third terminal of the first potentiometer RV1 is grounded.
In the present embodiment, the first resistor R1 is connected in series with the first potentiometer RV1, and the second resistor R2 is connected in parallel with the first potentiometer RV 1.
The total parasitic capacitance C of the isolated port a1 is (C3+ C2) × C1/((C3+ C2) + C1), where C1 represents the parasitic capacitance of the first resistor R1, C2 represents the parasitic capacitance of the second resistor R2, and C3 represents the parasitic capacitance of the first potentiometer RV 1.
It can be seen that the total parasitic capacitance C1 of the isolated port a1 is much smaller than the parasitic capacitance C3 of the first potentiometer RV 1.
The total parasitic inductance L of the isolated port a1 is (L3+ L1) × L2/((L3+ L1) + L2), where L1 denotes the parasitic inductance of the first resistor R1, L2 denotes the parasitic inductance of the second resistor R2, and L3 denotes the parasitic inductance of the first potentiometer RV 1.
It can be seen that the total parasitic inductance L of the isolated port a1 is much smaller than the parasitic inductance L3 of the first potentiometer RV 1.
In the embodiment, the first resistor R1 is connected in series in front of the first potentiometer RV1 and connected in parallel with the second resistor R2 to the ground, the parasitic capacitance and the parasitic inductance of the resistors are smaller than those of the first potentiometer RV1, the parasitic capacitance C3 and the parasitic inductance L3 of the first potentiometer RV1 of the isolation port A1 can be eliminated, the frequency response range is wider than that of the first potentiometer RV1, the sensitivity of the first potentiometer RV1 can be obviously reduced, the consistency is good, batch production is facilitated, and the production efficiency is improved.
Furthermore, the resistance value can be adjusted according to the requirement of the sensitivity of the first potentiometer RV1 in actual production, so that the sensitivity of the first potentiometer RV1 can be flexibly and effectively controlled.
Optionally, the first resistor R1 and the second resistor R2 of this embodiment are both chip resistors, and the chip resistors have the advantages of small size, light weight, suitability for reflow soldering and wave soldering, stable electrical performance, high reliability, low assembly cost, matching with automatic mounting equipment, high mechanical strength, superior high-frequency characteristics, and the like, and can further reduce the process difficulty of the coupling circuit 110, reduce the cost, and improve the consistency.
In other embodiments, a common resistor with pins may be used instead of the chip resistor.
Optionally, in this embodiment, the resistance of the first resistor R1 ranges from 0 Ω to 100 Ω, and the resistance of the second resistor R2 ranges from 50 Ω to 1M Ω. Of course, the resistance of the resistor can be adjusted appropriately according to the sensitivity requirement of the first potentiometer RV 1.
Optionally, the coupling circuit 110 of the present embodiment further includes: a second potentiometer RV2, wherein a first terminal of the second potentiometer RV2 is connected to the other terminal of the coupling line 111, and a second terminal of the second potentiometer RV2 is coupled to the coupling port a 2.
The second potentiometer RV2 is used to adjust the coupling degree of the coupling port a 2. The strength of the coupling signal output from the coupling port a2, that is, the coupling degree of the coupling port a2, can be adjusted by adjusting the impedance of the second potentiometer RV 2.
Further, a third terminal of the second potentiometer RV2 is grounded.
Optionally, the coupling circuit 110 of the present embodiment further includes: a third resistor R3, a first capacitor C1, a second capacitor C2, a third capacitor C3 and a fourth capacitor C4; one end of the third resistor R3 is connected with the second end of the second potentiometer RV2, and the other end of the third resistor R3 is grounded; one end of the first capacitor C1 is connected to the other end of the coupling line 111, and the other end of the first capacitor C1 is grounded; one end of a second capacitor C2 is connected with the second end of the second potentiometer RV2, and the other end of the second capacitor C2 is connected with the coupling port a 2; one end of the third capacitor C3 is connected with the other end of the second capacitor C2, and the other end of the third capacitor C3 is grounded; one end of the fourth capacitor C4 is connected to the other end of the second capacitor C2, and the other end of the fourth capacitor C4 is grounded.
Optionally, the coupling circuit 110 further includes a microstrip line (not shown), and the other end of the second potentiometer RV2 is coupled to the coupling port a2 through the microstrip line. The impedance of the coupling line 111 to the coupling port a2 can be adjusted by adjusting the impedance of the microstrip line so that the impedance of the coupling line 111 to the second coupling port a2 satisfies impedance matching, thereby making the isolation port a1 free from signal reflection.
In other embodiments, a variable resistor or the like may be used instead of the above microstrip line.
Specifically, the microstrip lines include a first microstrip line 113 and a second microstrip line 114. One end of the first microstrip line 113 is connected to the second end of the second resistor RV2, the other end of the first microstrip line 113 is connected to one end of the second capacitor C2, and the first microstrip line 113 is grounded through the third resistor R3, so that the quality of the coupled signal can be improved; one end of the second microstrip line 114 is connected to the other end of the second capacitor C2, the other end of the second microstrip line 114 is connected to the coupling port a2, and the second microstrip line 114 is grounded through the third capacitor C3 and the fourth capacitor C4, so that the quality of the coupling signal can be improved.
The coupling line 111 is grounded through the first capacitor C1, so that the quality of the coupled signal can be improved.
The present application further proposes a coupling circuit of a second embodiment, as shown in fig. 4, the coupling circuit of this embodiment is different from the coupling circuit of fig. 2 in that: the adjusting circuit 112 of the present embodiment only includes the first resistor R1, one end of the first resistor R1 is connected to the first end of the first potentiometer RV1, and the other end of the first resistor R1 is connected to one end of the coupling line 111.
In this embodiment, the total parasitic capacitance C of the isolation port a1 is C3C 1/(C3+ C1), where C1 represents the parasitic capacitance of the first resistor R1, and C3 represents the parasitic capacitance of the first potentiometer RV 1.
It can be seen that the total parasitic capacitance C of the isolated port a1 is smaller than the parasitic capacitance C3 of the first potentiometer RV 1.
Different from the prior art, in the embodiment, the first resistor R1 is connected in series in front of the first potentiometer RV1, the parasitic capacitor C1 of the first resistor R1 is smaller than the first potentiometer RV1, the parasitic capacitor C3 of the first potentiometer RV1 of the isolation port a1 can be eliminated, the frequency response range is wider than that of the first potentiometer RV1, the sensitivity of the first potentiometer RV1 can be obviously reduced, the consistency is good, batch production is facilitated, and the production efficiency is improved.
The present application further proposes a coupling circuit of a third embodiment, as shown in fig. 5, the coupling circuit of this embodiment is different from the coupling circuit of fig. 2 in that: the adjusting circuit 112 of the present embodiment only includes the second resistor R2, one end of the second resistor R2 is connected to the first end of the first potentiometer RV1, and the other end of the second resistor R1 is grounded.
In this embodiment, the total parasitic inductance L of the isolation port a1 is L3L 2/(L3+ L2), where L2 represents the parasitic inductance of the second resistor R2, and L3 represents the parasitic inductance of the first potentiometer RV 1.
It can be seen that the total parasitic inductance L of the isolated port a1 is much smaller than the parasitic inductance L3 of the first potentiometer RV 1.
Different from the prior art, in the embodiment, the second resistor R2 is connected in parallel in front of the first potentiometer RV1, the parasitic inductance L2 of the second resistor R2 is smaller than that of the first potentiometer RV1, the parasitic inductance L3 of the first potentiometer RV1 of the isolation port a1 can be eliminated, the frequency response range is wider than that of the first potentiometer RV1, the sensitivity of the first potentiometer RV1 can be obviously reduced, the consistency is good, batch production is facilitated, and the production efficiency is improved.
The present application further proposes a coupling circuit of a fourth embodiment, as shown in fig. 6, the coupling circuit of this embodiment is different from the coupling circuit of fig. 2 in that: one end of the second resistor R2 in the adjusting circuit 112 of the present embodiment is connected to one end of the coupled line 111.
The parasitic capacitance and the parasitic inductance of the coupling port a1 in this embodiment are the same as those in the embodiment of fig. 2, and are not described herein again.
Different from the prior art, in the embodiment, the second resistor R2 is connected in parallel to the ground in front of the first potentiometer RV1 and is connected in series with the first resistor R1, the parasitic capacitance and the parasitic inductance of the resistors are smaller than those of the first potentiometer RV1, the parasitic capacitance C3 and the parasitic inductance L3 of the first potentiometer RV1 of the isolation port a1 can be eliminated, the frequency response range is wider than that of the first potentiometer RV1, the sensitivity of the first potentiometer RV1 can be obviously reduced, the consistency is good, batch production is facilitated, and the production efficiency is improved.
Optionally, the coupling circuit 110 may further include a gain adjustment circuit (not shown) coupled to the coupling port to adjust the coupling signal, thereby increasing the coupling bandwidth of the coupler 101.
The present application further provides a communication device, as shown in fig. 7, fig. 7 is a schematic structural diagram of an embodiment of the communication device of the present application. The communication device 701 of this embodiment includes a coupler 702, where the coupler 702 is the coupler described in the above embodiments and is not described herein again.
Different from the prior art, the coupling circuit of the embodiment of the application comprises: the device comprises a coupling line, a first potentiometer, an isolation port, a coupling port and an adjusting circuit; the coupling line is coupled with the main transmission line, one end of the coupling line is connected with the adjusting circuit, the other end of the coupling line is coupled with the coupling port, the first end of the first potentiometer is connected with the adjusting circuit, and the second end of the first potentiometer is connected with the isolating port; the coupling line is used for acquiring a coupling signal from the main transmission line and transmitting the coupling signal to the coupling port, and the adjusting circuit is used for adjusting the parasitic capacitance and/or the parasitic inductance of the isolation port so as to adjust the sensitivity of the first potentiometer; wherein the coupling circuit is arranged on the circuit board. In this way, the coupling circuit in the embodiment of the application is provided with the adjusting circuit between the coupling line and the first potentiometer of the isolation port, so that the parasitic capacitance and/or the parasitic inductance of the isolation port can be adjusted, the parasitic capacitance and the parasitic inductance of the isolation port can be effectively controlled, the sensitivity of the first potentiometer of the isolation port can be effectively controlled, the difficulty in process processing and debugging can be reduced, the consistency is good, and the production efficiency can be improved.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A coupling circuit, characterized in that the coupling circuit comprises: the device comprises a coupling line, a first potentiometer, an isolation port, a coupling port and an adjusting circuit;
the coupling line is coupled with the main transmission line, one end of the coupling line is connected with the adjusting circuit, the other end of the coupling line is coupled with the coupling port, the first end of the first potentiometer is connected with the adjusting circuit, and the second end of the first potentiometer is connected with the isolating port;
the coupling line is used for acquiring a coupling signal from the main transmission line and transmitting the coupling signal to the coupling port, and the adjusting circuit is used for adjusting the parasitic capacitance and/or the parasitic inductance of the isolation port so as to adjust the sensitivity of the first potentiometer;
wherein the coupling circuit is disposed on a circuit board.
2. The coupling circuit of claim 1, wherein the adjustment circuit comprises a first resistor, one end of the coupling line is connected to one end of the first resistor, and the other end of the first resistor is connected to the first end of the first potentiometer.
3. The coupling circuit of claim 2, wherein the adjustment circuit further comprises a second resistor, one end of the second resistor is connected to the first end of the first potentiometer, and the other end of the second resistor is grounded.
4. The coupling circuit of claim 1, wherein the adjustment circuit comprises a second resistor, one end of the coupling line is connected to one end of the second resistor, the other end of the second resistor is grounded, and a first end of the first potentiometer is connected to the one end of the second resistor.
5. The coupling circuit of claim 1, wherein the coupling circuit further comprises:
a second potentiometer having a first end connected to the other end of the coupling line and a second end coupled to the coupling port;
the coupling circuit further comprises:
one end of the third resistor is connected with the second end of the second potentiometer, and the other end of the third resistor is grounded;
one end of the first capacitor is connected with the other end of the coupling line, and the other end of the first capacitor is grounded;
one end of the second capacitor is connected with the second end of the second potentiometer, and the other end of the second capacitor is connected with the coupling port;
one end of the third capacitor is connected with the other end of the second capacitor, and the other end of the third capacitor is grounded;
and one end of the fourth capacitor is connected with the other end of the second capacitor, and the other end of the fourth capacitor is grounded.
6. The coupling circuit of claim 5, further comprising a microstrip line, wherein the second end of the second potentiometer is coupled to the coupling port via the microstrip line.
7. The coupling circuit of claim 3, wherein the first resistor has a resistance value in a range of 0 Ω -100 Ω, and the second resistor has a resistance value in a range of 50 Ω -1 Μ Ω.
8. The coupling circuit of claim 3, wherein the first resistor is a chip resistor and the second resistor is a chip resistor.
9. A coupler, characterized in that the coupler comprises:
an input port and an output port;
one end of the main transmission line is connected with the input port, the other end of the main transmission line is connected with the output port, and the main transmission line is used for outputting radio-frequency signals from the input port to the output port;
the coupling circuit of any of claims 1 to 8, configured to take the coupled signal from the main transmission line and output the coupled signal to the coupling port.
10. A communication device, characterized in that it comprises a coupler according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021818307.XU CN212991278U (en) | 2020-08-26 | 2020-08-26 | Coupling circuit, coupler and communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021818307.XU CN212991278U (en) | 2020-08-26 | 2020-08-26 | Coupling circuit, coupler and communication device |
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| Publication Number | Publication Date |
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| CN212991278U true CN212991278U (en) | 2021-04-16 |
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| CN202021818307.XU Active CN212991278U (en) | 2020-08-26 | 2020-08-26 | Coupling circuit, coupler and communication device |
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