CN114696055B - Multipath same-frequency combiner - Google Patents
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Abstract
The application relates to a multipath same-frequency combiner. The multipath same-frequency combiner comprises two first combining units, one second combining unit and two couplers corresponding to the two first combining units one by one; each first combining unit is used for combining signals respectively input by a plurality of first input ports to obtain a first combined signal, and outputting the first combined signal from a first output port; each coupler is used for coupling the first combined signal output by the corresponding first combined unit to obtain a coupled signal, and inputting the coupled signal to the second combined unit; and the second combining unit is used for combining the input coupling signals to obtain a second combined signal. The same-frequency combiner can improve the signal coverage of the 5G base station and reduce the setting number of the 5G base station, thereby reducing the cost of a 5G system.
Description
Technical Field
The application relates to the technical field of a combiner, in particular to a multipath same-frequency combiner.
Background
With the continuous development of communication technology, especially the update and evolution of 5G (English: 5th Generation Mobile Communication Technology, abbreviated: 5G) technology, the more abundant the existing communication frequency band is. However, in practical applications, it is found that the higher the frequency band, the greater the signal fading, e.g., the 2.6GHz band transmission capability is not as good as half that of the low frequency system. This also results in the 5G technology requiring more base stations to achieve the same signal coverage effect as other systems.
However, more 5G base stations need to be set, which causes the cost of the 5G system to increase sharply, and is unfavorable for the popularization of the 5G system.
Disclosure of Invention
Accordingly, it is desirable to provide a multi-channel co-frequency combiner that can reduce the cost in order to solve the above-mentioned problems.
A multipath same-frequency combiner comprises two first combining units, a second combining unit and two couplers which are in one-to-one correspondence with the two first combining units;
each first combining unit is used for combining signals respectively input by a plurality of first input ports to obtain a first combined signal, and outputting the first combined signal from a first output port;
each coupler is used for coupling the first combined signal output by the corresponding first combined unit to obtain a coupled signal, and inputting the coupled signal to the second combined unit;
the second combining unit is used for combining the input coupling signals to obtain a second combined signal, and the second combined signal is used for calibrating the amplitude and the phase of the signals input by the first input port or monitoring the signals.
In one embodiment, the first combining unit comprises two first ring bridges and one second ring bridge;
the first annular bridge is used for combining signals respectively input by the plurality of first input ports to obtain an intermediate signal, and outputting the intermediate signal to the second annular bridge;
and the second annular bridges are used for combining the intermediate signals input by the first annular bridges to obtain first combined signals, and outputting the first combined signals from the first output ports.
In one embodiment, the first ring bridge includes a first port, a second port, a third port, and a fourth port;
the first port and the second port are respectively connected with the information source and used for receiving input signals as a first input port;
the third port is connected with the first load;
the fourth port is connected to the second ring bridge for transmitting an intermediate signal thereto.
In one embodiment, the electrical length between the first port and the fourth port, the electrical length between the second port and the fourth port, and the electrical length between the second port and the third port are equal and are 1/4 of the wavelength of the input signal;
the electrical length between the first port and the third port is 3/4 of the wavelength of the input signal.
In one embodiment, the first port is 90 ° out of phase with the fourth port; the phase difference between the first port and the third port is 270 degrees; the phase difference between the second port and the fourth port is 90 degrees; the phase difference between the second port and the third port is 90 deg..
In one embodiment, the fifth port and the sixth port are respectively connected with each first annular bridge in a one-to-one correspondence manner and are used for receiving the intermediate signals;
the seventh port is connected with a second load;
and an eighth port for outputting the first combined signal from the first output port.
In one embodiment, the electrical length between the fifth port and the eighth port, the electrical length between the sixth port and the eighth port, and the electrical length between the sixth port and the seventh port are equal and are 1/4 of the wavelength of the input signal;
the electrical length between the fifth port and the seventh port is 3/4 of the wavelength of the input signal.
In one embodiment, the fifth port is 90 ° out of phase with the eighth port; the phase difference between the fifth port and the seventh port is 270 degrees; the phase difference between the sixth port and the eighth port is 90 degrees; the phase difference between the sixth port and the seventh port is 90 °.
In one embodiment, the second combining unit includes a third ring bridge; the third ring bridge includes a ninth port, a tenth port, an eleventh port, and a twelfth port;
the ninth port and the tenth port are respectively connected with the couplers in a one-to-one correspondence manner and are used for receiving the coupling signals;
the eleventh port is connected with a third load;
and a twelfth port for outputting the second combined signal from the second output port.
In one embodiment, the electrical length between the ninth port and the twelfth port, the electrical length between the tenth port and the twelfth port, and the electrical length between the tenth port and the eleventh port are equal and are 1/4 of the wavelength of the input signal;
the electrical length between the ninth port and the eleventh port is 3/4 of the wavelength of the input signal.
In one embodiment, the ninth port is 90 ° out of phase with the twelfth port; the phase difference between the ninth port and the eleventh port is 270 °; the phase difference between the tenth port and the twelfth port is 90 °; the tenth port and the eleventh port have a phase difference of 90 °.
In one embodiment, the first input ports are four.
The multipath same-frequency combiner can improve the signal coverage of the 5G base station and reduce the setting number of the 5G base station, thereby reducing the cost of a 5G system. The multipath same-frequency combiner comprises two first combining units, one second combining unit and two couplers corresponding to the two first combining units one by one; each first combining unit is used for combining signals respectively input by a plurality of first input ports to obtain a first combined signal, and outputting the first combined signal from a first output port; each coupler is used for coupling the first combined signal output by the corresponding first combined unit to obtain a coupled signal, and inputting the coupled signal to the second combined unit; and the second combining unit is used for combining the input coupling signals to obtain a second combined signal. The same-frequency combiner has the characteristics of high isolation, small phase difference, coupling fluctuation and small insertion loss fluctuation, has small power loss in a normal working state, can overcome the difficulty of high-frequency transmission, and can meet the combining requirement of the existing 5G system.
Drawings
FIG. 1 is a block diagram of a multi-path on-channel combiner;
FIG. 2 is a block schematic of the present application;
FIG. 3 is a block diagram of a multi-path on-channel combiner in one embodiment;
FIG. 4 is a circuit diagram of a printed circuit board according to an embodiment of the present application;
FIG. 5 is a cavity diagram of an embodiment of the present application;
FIG. 6 is a schematic diagram of return loss simulation;
FIG. 7 is a schematic diagram of an isolation simulation;
FIG. 8 is a schematic diagram of a simulation of the degree of coupling;
FIG. 9 is a schematic diagram of phase difference simulation;
fig. 10 is a schematic illustration of insertion loss simulation.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
With the rapid development of mobile communication, frequency allocation is limited, and many base stations need multiple signal outputs and inputs, in which case, on-channel combiners are generated.
At present, the update and evolution of the 5G technology bring great convenience for the production and life of people. In practical application, the 5G base station is characterized in that the signal is in a high frequency band, and the higher the frequency band is, the larger the signal attenuation is, and the smaller the coverage area is. For example, the 2.6GHz band transmission capability is not as good as half of the low frequency system. This also results in more base stations being required to achieve the same signal coverage effect as other systems when applying 5G technology. This increases the communication cost by increasing the number of base stations.
In order to improve the signal coverage of the 5G base station and reduce the number of 5G base stations so as to reduce the construction cost of a 5G system, the embodiment of the application provides a multipath same-frequency combiner which has the characteristics of high isolation, small phase difference and small coupling fluctuation and insertion loss fluctuation. And by combining the same-frequency signals, the power of the output signal is increased to improve the signal coverage of the 5G base station. The structure and function of the multipath same-frequency combiner are described below:
as shown in fig. 1, which shows a block diagram of a multi-path co-frequency combiner, according to fig. 1, the multi-path co-frequency combiner includes two first combining units, one second combining unit, and two couplers corresponding to the two first combining units one by one; the first combining unit is cascaded with the second combining unit through a coupler, specifically, the first combining unit comprises a plurality of first input ports and a first output port, the plurality of first input ports are used for receiving input signals, the first combining unit combines the signals input from the first input ports to obtain a first combined signal, and then the first combining unit outputs the first combined signal through the first output port. For example, the first combining unit includes two first input ports, and the two first input ports respectively input an a signal and a B signal, where the a signal and the B signal are in the same frequency. The corresponding first combined signal is the a signal + B signal.
In the embodiment of the present application, as shown in fig. 1, a coupler is disposed between a first combining unit and a second combining unit, and the coupler is configured to couple a first combining signal output by the first combining unit and obtain a coupled signal. Specifically, the coupler may couple each signal in the first combined signal to obtain a corresponding coupled signal, and receive the above example, in the process that the signal a and the signal B are transmitted in order, when the signal a in the first combined signal passes through the coupler, the coupler may induce the signal a to obtain a corresponding coupled signal a, and when the signal B in the first combined signal passes through the coupler, the coupler may induce the signal B to obtain a corresponding coupled signal B.
In the embodiment of the application, the second combining unit comprises two input ports and one output port, wherein the two input ports are respectively connected with the two couplers and used for obtaining coupling signals, the second combining unit combines the input coupling signals to obtain a second combined signal, and the second combined signal is output from the output port. The second combined signal is used for calibrating the amplitude and the phase of the signal input by the first input port or monitoring the signal.
Optionally, in an embodiment of the present application, the second combining unit further includes a second transmission line and a second port, where the second transmission line is disposed between the second port and an output end of the second combining unit, and the second port is connected to a previous stage processing circuit of the multiple same-frequency combiner. When the signal processing circuit is applied, the second combined signal can be transmitted to the upper-stage processing circuit through the output port, the second transmission line and the second port of the second combined unit, and the upper-stage processing circuit calibrates the amplitude and the phase of the signal input by each first input port of the first combined unit or monitors the signal.
Optionally, in an embodiment of the present application, the first combining unit further includes a first transmission line and a first port, where the first transmission line is disposed between the first port and the first output port, the first port is connected to the radio frequency antenna, and after the first combined signal is output from the first output port, the first combined signal is transmitted to the first port through the first transmission line, then is transmitted to the radio frequency antenna through the first port, and finally is emitted by the radio frequency antenna.
Optionally, in an embodiment of the present application, two input ports of the second combining unit are respectively provided with an input transmission line, where one end of the input transmission line is connected with the input port of the second combining unit, and the other end of the input transmission line is connected with the load. Correspondingly, the coupler is arranged on the first transmission line and the input transmission line. When the first combined signal is transmitted on the first transmission line, the coupler can couple the first combined signal and generate a coupled signal on the input transmission line, and the coupled signal enters the second combined unit through the input transmission line.
The multipath same-frequency combiner provided by the embodiment of the application has the characteristics of high isolation, small phase difference and small coupling fluctuation and insertion loss fluctuation, and can meet the combining requirement of a 5G base station.
Optionally, in the embodiment of the present application, the number of the first input ports is four, the first combining unit is a 4-in-1 co-frequency combiner, and the second combining unit is a 2-in-1 co-frequency combiner. As shown IN fig. 2, the first input ports corresponding to the 4-IN-1 co-frequency combiner 1 are IN1, IN2, IN3, IN4; the first input ports corresponding to the 4-IN-1 same-frequency combiner 2 are IN5, IN6, IN7 and IN8; the 8 first input ports input signals with the same frequency. The coupler comprises a coupler 1 and a coupler 2, wherein the coupler 1 and the coupler 2 are respectively arranged on output lines corresponding to a first output port of a first combining unit and are used for sensing a first combining signal to obtain a coupling signal, the coupling signal enters the 2-in-1 same-frequency combiner through an input end of the 2-in-1 same-frequency combiner to be combined to obtain a second combining signal, the second combining signal is essentially the coupling signal, and the coupling signal can be used for monitoring a scene of signals and calibrating the amplitude and the phase of signals input by the first input port. In the embodiment of the application, the multipath same-frequency combiner shown in fig. 2 can meet the combining requirement of the existing 5G base station 8TR antenna.
Based on the above embodiment, optionally, in the embodiment of the present application, the first combining unit includes three ring bridges, and the three ring bridges form a 4-in-1 common-frequency combiner through cascading. The single port of the ring bridge serves as a first input port, and signals are input from the single port of the ring bridge and output from the port 1. The coupler couples signals from the main line through edge coupling, and the coupled signals are output from the port 2 through the 2-in-1 on-channel combiner.
As shown in fig. 3, a multi-channel on-channel combiner is shown, where the multi-channel on-channel combiner includes two first ring bridges and one second ring bridge, where the output ports of the two first ring bridges are connected to the input ports of the one second ring bridge. The first ring bridge comprises an input port, the input port is a single port, wherein the input port can be connected with an information source and used for receiving an input signal emitted by the information source, the first ring bridge can perform first combination on the received input signal to obtain an intermediate signal, and then the first ring bridge can send the intermediate signal to the second ring bridge through the output port. The second annular bridge is used for combining intermediate signals input by the first annular bridges to obtain first combined signals.
Optionally, in an embodiment of the present application, as shown in fig. 4 and fig. 5, fig. 4 shows a circuit diagram of a printed board in the embodiment of the present application, and fig. 5 is a cavity diagram of the printed board, where the printed board is fixed in the cavity by a screw, and a front surface of the cavity includes a plurality of isolation walls for avoiding interaction between two first ring-shaped bridges and between a first ring-shaped bridge and a second ring-shaped bridge. And the back of the cavity is also provided with radiating teeth for radiating heat of the load.
The first ring bridge is described as follows: the first annular bridge comprises a first port a, a second port B, a third port d and a fourth port c, wherein the first port a is connected with a port A through a transmission line, the second port B is connected with a port B through a transmission line, and the port A and the port B are respectively connected with a signal source and used as a first input port for receiving input signals; the third port d is connected with the first load; the fourth port c is connected to the second ring bridge for sending an intermediate signal to the second ring bridge.
Optionally, the first ring bridge and the second ring bridge are connected by a transmission line, and the intermediate signal is transmitted to an input port of the second ring bridge by the transmission line.
Optionally, in the embodiment of the present application, as shown in fig. 4, the electrical length between the first port a and the fourth port c, the electrical length between the second port b and the fourth port c, and the electrical length between the second port b and the third port d are equal, and are 1/4 of the wavelength of the input signal; the electrical length between the first port a and the third port d is 3/4 of the wavelength of the input signal. The electric lengths are equal, so that the phase difference is smaller than the threshold value, and the isolation between the first port and the second port can be made high according to the principle of superposition and subtraction of the phases.
Optionally, in an embodiment of the present application, the phase difference between the first port a and the fourth port c is 90 °; the phase difference between the first port a and the third port d is 270 degrees; the phase difference between the second port b and the fourth port c is 90 degrees; the phase difference between the second port b and the third port d is 90 °.
Next, the operation principle of the first ring bridge will be described:
where the electrical lengths ac=bc=bd=λ/4, ad=3λ/4, the corresponding phase offsets θac=θbc=θbd=90 °, θad=270 °.
When the first port a inputs a signal and the other ports are matched, two paths are ac and adbc respectively, wherein θac=90°, θadbc=270° +90° +90 ° -360 ° =90°, and the phase difference is 0, in which case the signals are superimposed at the fourth port c.
There are two paths from the first port a to the second port b, acb and adb, respectively, where θacb=90° =180°, θadb=270° +90° =360°, and the phase difference is 180 °, in which case the signal cancels at the second port b.
There are two paths from the first port a to the third port d, acbd and ad, respectively, where θacbd=90° +90° =270°, θad=270°, and the phase difference is 0, in which case the signals are superimposed at the third port d.
From the above analysis, when the first port a inputs a signal, and the other ports are matched, 3dB power is output through the fourth port c, and 3dB power is output to the third port d to be absorbed by the first load. Similarly, when the second port b inputs signals and the other ports are matched, 3dB power is output through the fourth port c, and 3dB power is output to the third port d to be absorbed by the first load.
When the first port a to the second port b input the synchronous signal, the analysis by the above method shows that the signals are all output from the fourth port c, and the third port d does not absorb power. Therefore, in a normal working state, through mutual superposition and cancellation of signals, the first port a to the second port b can be isolated very high, and meanwhile, signals can be combined and output to the ports without loss, so that the 5G signals can be covered more widely.
Optionally, in an embodiment of the present application, as shown in fig. 4, fig. 4 shows a schematic circuit diagram of a second ring bridge, where the second ring bridge includes a fifth port e, a sixth port f, a seventh port g, and an eighth port h, where the fifth port e and the sixth port f are respectively connected to each first ring bridge in a one-to-one correspondence manner, and are used for receiving an intermediate signal; the seventh port g is connected with a second load; the eighth port h is connected to the second ring bridge for outputting the first combined signal from the first output port.
Optionally, the fifth port e and the sixth port f are respectively connected with the fourth port of the first ring bridge in a one-to-one correspondence manner through the first transmission line.
Optionally, in the embodiment of the present application, an electrical length between the fifth port e and the eighth port h, an electrical length between the sixth port f and the eighth port h, and an electrical length between the sixth port f and the seventh port g are equal, and are 1/4 of a wavelength of an input signal;
the electrical length between the fifth port e and the seventh port g is 3/4 of the wavelength of the input signal.
Optionally, in an embodiment of the present application, a phase difference between the fifth port e and the eighth port h is 90 °; the phase difference between the fifth port e and the seventh port g is 270 °; the phase difference between the sixth port f and the eighth port h is 90 °; the phase difference between the sixth port f and the seventh port g is 90 °.
Next, the operation principle of the second ring bridge will be described:
wherein the electrical length eh=fh=fg=λ/4, eg=3λ/4, the corresponding phase offset is θeh=θfh=θfg=90 °, θeg=270 °.
When the fifth port e inputs a signal and the other ports are matched, there are two paths eh and egfh, respectively, where θeh=90°, θegfh=270° +90° +90 ° -360 ° =90°, and the phase difference is 0, in which case the signals are superimposed at the eighth port h.
There are two paths from the fifth port e to the sixth port f, ehf and egf, respectively, where θehf=90° =90° =180°, θegf=270° +90° =360°, the phase difference being 180 °, in which case the signal cancels at the sixth port f.
There are two paths from the fifth port e to the seventh port g, ehfg and eg, respectively, where θehfg=90° +90° =270°, θeg=270°, the phase difference being 0, in which case the signals are superimposed at the seventh port g.
From the above analysis, when the fifth port e inputs a signal, and the other ports are matched, then 3dB of power is output through the eighth port h, and 3dB of power is output to the seventh port g to be absorbed by the second load. Similarly, when the sixth port f inputs a signal and the other ports are matched, 3dB of power is output through the eighth port h, and 3dB of power is output to the seventh port g to be absorbed by the second load.
According to the analysis, in the technical scheme of the application, under the normal working state, through mutual superposition and cancellation of signals, the first port and the second port (or the fifth port and the sixth port) can be isolated very highly, meanwhile, the signals can be superimposed on the fourth port (or the eighth port) to realize signal lossless combination, and the signals are output from the output port, so that the signal power is improved, and the signal coverage range of the 5G base station is wider.
Based on the above embodiment, optionally, in the embodiment of the present application, the second combining unit includes a third ring bridge, and the third ring bridge and the two couplers form a 2 in1 common frequency combiner. Optionally, the third ring bridge includes a plurality of input terminals, and the plurality of input terminals are connected to the first output terminal of the first combining unit through a transmission line.
The following describes the structure of the second combining unit in the embodiment of the present application:
as shown in fig. 4, the third ring bridge includes a ninth port i, a tenth port j, an eleventh port k, and a twelfth port m; the ninth port i and the tenth port j are respectively connected with the couplers in a one-to-one correspondence manner and are used for receiving coupling signals; the eleventh port k is connected with a third load; the twelfth port m is for outputting the second combined signal from the second output port.
Optionally, the electrical length between the ninth port i and the twelfth port m, the electrical length between the tenth port j and the twelfth port m, and the electrical length between the tenth port j and the eleventh port k are equal and 1/4 of the wavelength of the input signal; the electrical length between the ninth port i and the eleventh port k is 3/4 of the wavelength of the input signal.
Optionally, the phase difference between the ninth port i and the twelfth port m is 90 °; the phase difference between the ninth port i and the eleventh port k is 270 °; the phase difference between the tenth port j and the twelfth port m is 90 °; the phase difference between the tenth port j and the eleventh port k is 90 °.
Next, the operation principle of the third ring bridge will be described:
wherein the electrical length im=mj=jk=λ/4, ik=3λ/4, and the corresponding phase shift is θim=θmj=θjk=90°, θik=270°.
When the ninth port i inputs a signal and the other ports are matched, two paths are im and ikjm, respectively, where θim=90°, θikjm=270° +90° +90 ° -360 ° =90°, and the phase difference is 0, in which case the signals are superimposed at the twelfth port m.
The ninth port i to the tenth port j have two paths, imj and ikj, respectively, where θ imj =90° =90° =180°, θikj=270° +90° =360°, and the phase difference is 180 °, in which case the signal is cancelled at the tenth port j.
There are two paths of the ninth port i to the eleventh port k, imjk and ik, respectively, where θimjk=90° +90° =270°, θik=270°, and the phase difference is 0, in which case the signals are superimposed at the eleventh port k.
From the above analysis, when the ninth port i inputs a signal, and the other ports are matched, then 3dB of power is output through the twelfth port m, and 3dB of power is output to the eleventh port k to be absorbed by the third load. Similarly, when the tenth port j inputs a signal, and the other ports are matched, 3dB of power is output through the twelfth port m, and 3dB of power is output to the eleventh port k to be absorbed by the third load.
In the embodiment of the application, the coupled signal output by the COM3 port is processed by the base station and then the amplitude and phase of the input signal are calibrated or the signal is monitored.
The following describes the technical scheme of the application in combination with simulation:
the technical specification requirements of the embodiment of the patent are as follows: passband 2515-2675MHz, return loss: less than or equal to 6.3dB, isolation more than or equal to 28dB, and output port coupling degree: 26+/-0.5 dB, and the phase difference is less than or equal to 5 degrees.
Wherein, fig. 6 is a return loss simulation schematic diagram, which illustrates that the matching degree of ports is good; FIG. 7 is a schematic diagram of an isolation simulation illustrating small interactions of input port signals; FIG. 8 is a schematic diagram of a simulation of the degree of coupling, illustrating small fluctuations in the degree of coupling; fig. 9 is a schematic diagram of phase difference simulation illustrating that the phase difference between the input ports is small; fig. 10 is a schematic illustration of insertion loss simulation.
According to fig. 6 to 10, it can be seen that the technical specification requirements can be met by adopting the scheme provided by the embodiment of the application. The purposes of high isolation, low phase difference and low loss are realized.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. The implementation form is not limited to the microstrip line form adopted in the embodiment, but can also be a strip line, a suspension line and the like which contain the technical features described in the embodiment. The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.
Claims (11)
1. The multipath same-frequency combiner is characterized by comprising two first combining units, one second combining unit and two couplers which are in one-to-one correspondence with the two first combining units;
the first combining units are used for combining signals respectively input by a plurality of first input ports to obtain first combined signals, and outputting the first combined signals from a first output port;
each coupler is used for coupling the first combined signal output by the corresponding first combined unit to obtain a coupled signal, and inputting the coupled signal to the second combined unit;
the second combining unit is used for combining the input coupling signals to obtain a second combined signal;
the first combining unit comprises two first annular bridges and a second annular bridge;
the first annular bridge is used for combining signals respectively input by the plurality of first input ports to obtain an intermediate signal, and outputting the intermediate signal to the second annular bridge;
the second ring bridge is configured to combine the intermediate signals input by the first ring bridges to obtain the first combined signal, and output the first combined signal from the first output port.
2. The multiple on-channel combiner of claim 1, wherein the first ring bridge comprises a first port, a second port, a third port, and a fourth port;
the first port and the second port are respectively connected with a signal source and used for receiving an input signal as the first input port;
the third port is connected with a first load;
the fourth port is connected with the second annular bridge and is used for sending the intermediate signal to the second annular bridge.
3. The multi-channel on-channel combiner of claim 2, wherein,
the electrical length between the first port and the fourth port, the electrical length between the second port and the fourth port, and the electrical length between the second port and the third port are equal and are 1/4 of the wavelength of the input signal;
the electrical length between the first port and the third port is 3/4 of the wavelength of the input signal.
4. The multi-channel on-channel combiner of claim 2, wherein,
the phase difference between the first port and the fourth port is 90 degrees; the phase difference between the first port and the third port is 270 degrees; the phase difference between the second port and the fourth port is 90 degrees; the second port is 90 ° out of phase with the third port.
5. The multiple on-channel combiner of claim 2, wherein the second ring bridge comprises a fifth port, a sixth port, a seventh port, and an eighth port;
the fifth port and the sixth port are respectively connected with the first annular bridges in a one-to-one correspondence manner and are used for receiving the intermediate signals;
the seventh port is connected with a second load;
the eighth port is configured to output the first combined signal from the first output port.
6. The multi-channel on-channel combiner of claim 5, wherein,
the electrical length between the fifth port and the eighth port, the electrical length between the sixth port and the eighth port, and the electrical length between the sixth port and the seventh port are equal and are 1/4 of the wavelength of the input signal;
the electrical length between the fifth port and the seventh port is 3/4 of the wavelength of the input signal.
7. The multi-channel on-channel combiner of claim 5, wherein,
the phase difference between the fifth port and the eighth port is 90 degrees; the phase difference between the fifth port and the seventh port is 270 degrees; the phase difference between the sixth port and the eighth port is 90 °; the phase difference between the sixth port and the seventh port is 90 °.
8. The multiple on-channel combiner of claim 1, wherein the second combining unit comprises a third ring bridge; the third ring bridge includes a ninth port, a tenth port, an eleventh port, and a twelfth port;
the ninth port and the tenth port are respectively connected with the couplers in a one-to-one correspondence manner and are used for receiving the coupling signals;
the eleventh port is connected with a third load;
the twelfth port is configured to output the second combined signal from a second output port.
9. The multi-way on-channel combiner of claim 8, wherein,
the electrical length between the ninth port and the twelfth port, the electrical length between the tenth port and the twelfth port, and the electrical length between the tenth port and the eleventh port are equal and are 1/4 of the wavelength of the input signal;
the electrical length between the ninth port and the eleventh port is 3/4 of the wavelength of the input signal.
10. The multi-way on-channel combiner of claim 8, wherein,
the phase difference between the ninth port and the twelfth port is 90 degrees; a phase difference between the ninth port and the eleventh port is 270 °; the phase difference between the tenth port and the twelfth port is 90 °; the tenth port and the eleventh port have a phase difference of 90 °.
11. The multi-channel on-channel combiner of claim 1, wherein,
the multipath same-frequency combiner further comprises a printed board and a printed board cavity, wherein the printed board is fixed in the printed board cavity through screws;
so the printing board cavity includes cavity front and cavity back, wherein, the cavity front includes a plurality of partition walls for keep apart first annular bridge with the second annular bridge, the cavity back is provided with the heat dissipation tooth for dispel the heat to the load.
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| CN115441145B (en) * | 2022-07-28 | 2023-08-04 | 河北优圣通信科技有限公司 | Same-frequency combiner |
| CN115719870B (en) * | 2022-11-30 | 2024-05-28 | 京信射频技术(广州)有限公司 | Multipath same-frequency combiner |
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