CN211879584U - Power combining module and power combining circuit - Google Patents
Power combining module and power combining circuit Download PDFInfo
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- CN211879584U CN211879584U CN201921851112.2U CN201921851112U CN211879584U CN 211879584 U CN211879584 U CN 211879584U CN 201921851112 U CN201921851112 U CN 201921851112U CN 211879584 U CN211879584 U CN 211879584U
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Abstract
The embodiment of the utility model discloses power synthesis module and power synthesis circuit. The power combining module includes: at least two isolators and a power combiner; the first end of the isolator is used as the input end of the power synthesis module and is used for receiving an input signal provided by an input circuit, the second end of the isolator is connected with the input end of the power synthesizer, the isolator is used for isolating the input circuit from an output circuit and isolating different input circuits, the power synthesizer is used for power synthesis, and the isolators connected with different input ends of the power synthesizer are different; and the output end of the power synthesizer is used as the output end of the power synthesis module and is used for outputting the synthesized power to an output circuit. The embodiment of the utility model provides a can improve power synthesis system's system stability, reduce the cost of isolator to reduce power synthesis system's cost.
Description
Technical Field
The embodiment of the utility model provides a relate to the power synthesis field, especially relate to a power synthesis module and power synthesis circuit.
Background
With the rapid development of microwave technology, the power requirement of the system is higher and higher, and power synthesis is an effective way for realizing high power. The larger the power is, the larger the system synthesis scale is, the more the reliability of the whole machine is affected, and the requirements on devices, such as an isolator, a circulator, a power divider, a synthesizer or a filter, are higher and higher. The more the traditional synthesis mode and synthesis technology are challenged by high-power synthesis, so that the research on the power synthesis technology in the case of high-power synthesis is necessary.
The power combiner with multi-path synthesis is usually used to implement power synthesis, but adjacent branches may affect each other, so that the stability of the power combiner cannot be guaranteed.
In the conventional method for improving the stability of the power combiner, as shown in fig. 1 in particular, an isolator is added to an output port of the power combiner to play a role of isolation protection. But the power output by the output port is large, requiring a powerful isolator to fit the power combiner. At present, a high-power isolator is difficult to realize, large in size, heavy, inconvenient to use, inconvenient to implement in engineering and poor in feasibility, and meanwhile, the problems of heat dissipation and the like need to be considered.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a power synthesis module and power synthesis circuit can improve the system stability of power synthesis system, reduces the cost of isolator to reduce the cost of power synthesis system.
In a first aspect, an embodiment of the present invention provides a power combining module, including: comprises at least two isolators and a power combiner;
the first end of the isolator is used as the input end of the power synthesis module and is used for receiving an input signal provided by an input circuit, the second end of the isolator is connected with the input end of the power synthesizer, the isolator is used for isolating the input circuit from an output circuit and isolating different input circuits, the power synthesizer is used for power synthesis, and the isolators connected with different input ends of the power synthesizer are different;
and the output end of the power synthesizer is used as the output end of the power synthesis module and is used for outputting the synthesized power to an output circuit.
Further, the power combiner includes at least two input terminals, and each of the input terminals is connected to an isolator.
Further, the power combiner is a radial power combiner.
Further, the power combiner is a 25-path power combiner.
In a second aspect, an embodiment of the present invention further provides a power combining circuit, including: at least one input circuit, a power combining module as described in any of the embodiments of the present invention, and an output circuit;
the input circuit is connected with the input end of the power synthesis module and is used for providing input signals to be synthesized for the power synthesis module;
the output end of the power synthesis module is connected with the output circuit and used for performing power synthesis on the input signals provided by the input circuits to obtain amplified power signals and outputting the amplified power signals to the output circuit;
the output circuit is used for receiving the amplified power signal provided by the power synthesis module.
The embodiment of the utility model provides a through the input configuration isolator at the power synthesis module, the power of input is less than the power of output usually, thereby, reduce the power requirement of isolator, the isolator has been disposed at the output among the prior art to the solution, the power requirement that causes the isolator is high, thereby lead to the isolator with high costs, bulky and the poor problem of feasibility, reduce the cost of isolator simultaneously, the volume and the realization degree of difficulty, thereby reduce the cost of power synthesis module, the volume and the realization degree of difficulty, improve the feasibility of power synthesis module.
Drawings
Fig. 1 is a schematic structural diagram of a power combining module in the prior art;
fig. 2 is a schematic structural diagram of a power combining module in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a 25-path directional power combiner according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a simulation result input from a 25-path to an input port of a power combiner according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a simulation result output from 25 paths to an output port of a power combiner according to an embodiment of the present invention;
fig. 6 is a schematic illustration of the isolation between adjacent input ports without isolators in an embodiment of the invention;
fig. 7 is a schematic illustration of the isolation between adjacent input ports with isolators in an embodiment of the invention;
fig. 8 is a schematic structural diagram of a back-to-back cascade structure in an embodiment of the present invention;
fig. 9 is a schematic diagram of the transmission characteristics of an isolator-free input port and output port in an embodiment of the invention;
fig. 10 is a schematic diagram of the transmission characteristics of an input port and an output port with an isolator in an embodiment of the invention;
fig. 11 is a schematic structural diagram of a power combining circuit in an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Examples
Fig. 2 is a schematic diagram of a power combining module in an embodiment of the present invention, which can be applied to the case of performing power combining on multiple input signals to obtain a signal of one path. As shown in fig. 2, the power combining module 100 of the present embodiment specifically includes: at least two isolators 120 and a power combiner 110.
A first terminal of the isolator 120 serves as an input terminal 200 of the power combining module 100 for receiving an input signal provided by the input circuit, a second terminal of the isolator 120 is connected to an input terminal of the power combiner 110, and an output terminal of the power combiner 110 serves as an output terminal 300 of the power combining module 100 for outputting the combined power to the output circuit.
Wherein the power combiner 110 is used for power combining. Specifically, the power combiner combines at least two input signal energies into one output for amplifying power. The utility model provides a power combiner obtains the application of managing meal in microwave electronic equipment and system, like in industrial equipment such as modern radio communication, satellite transceiver, radar, telemetering remote control system and electronic countermeasure equipment.
Optionally, the power combiner 110 is a radial power combiner. Illustratively, the power combiner is a 25-path directional power combiner. The radial power combiner realizes power combination by adopting a space power combination technology, and particularly, the radial power combiner is of an N-path air medium non-resonant radial transmission line structure (N is more than or equal to 1). The input ports are equally spaced along the periphery of the parallel plate radial transmission line, and the output power is obtained at the output port. The input structure is a coaxial probe or a rectangular waveguide and the midpoint output structure is typically a coaxial probe. The method has the advantages of low combination loss, high power processing capability, adaptability to input of large numerical values (non-binary), good amplitude-phase balance at the radial end and small size. The specific structure of the radial power combiner may refer to the structure in the prior art, and the embodiments of the present invention are not limited thereto.
Wherein the isolator 120 is used to isolate the input circuit from the output circuit, and to isolate different input circuits, the isolator 120 connected to different inputs of the power combiner 110 is different.
Optionally, the power combiner 110 includes at least two inputs, and each input is connected to one of the isolators 120. That is, the power combiner includes M input terminals and is configured with M isolators, that is, each input terminal is configured with one isolator.
It can be appreciated that the isolator of the present invention is configured for distributed isolation as compared to the centralized isolation of the prior art.
In practice, the power of the isolator is equal to the power provided by the input circuit. The power of the output circuit is equal to the power of the plurality of input circuits after the power of the output circuit is combined, and generally, the power of the output circuit is larger than that of each input circuit, so that the isolator is connected with the input circuit instead of the output circuit, and correspondingly, the power of the isolator is reduced. Therefore, the embodiment of the utility model discloses a power requirement of isolator can be reduced to reduce the volume and the cost of isolator.
Generally, an input circuit provides an input signal to a power combiner, the power combiner combines an output signal and outputs the output signal to an output circuit, when the output circuit receives the output signal, standing waves occur, and a part of generated electromagnetic waves are fed back to the power combiner, even fed back to the input circuit through an input end of the power combiner, and at the moment, the amplifier, a transistor or other devices in the power combiner and the bearable power of the input circuit are small, so that the devices are damaged, and the like, and the stability of the power combiner is reduced. Therefore, the isolator is arranged between the input end and the power synthesizer, so that the situation that the signal reflected by the power synthesizer is fed back to the input circuit to cause the damage of components in the input circuit can be avoided, and the effect of protecting the input circuit is achieved.
In addition, the power combiner comprises a plurality of input ends, each input end can be connected with the input circuit, an isolator is arranged on each input end, the isolators on each branch can be isolated from each other, and signal interference of other branches on the current branch is avoided.
The embodiment of the utility model provides a through the input configuration isolator at the power synthesis module, the power of input is less than the power of output usually, thereby, reduce the power requirement of isolator, the isolator has been disposed at the output among the prior art to the solution, the power requirement that causes the isolator is high, thereby lead to the isolator with high costs, bulky and the poor problem of feasibility, reduce the cost of isolator simultaneously, the volume and the realization degree of difficulty, thereby reduce the cost of power synthesis module, the volume and the realization degree of difficulty, improve the feasibility of power synthesis module.
In one specific example, as shown in fig. 3, the power combiner is a 25-path directional power combiner. For example, the isolator has an isolation of 30dB and the maximum output power of the 25 paths to the power combiner is 73.6 dBm. At this time, fig. 4 shows the simulation result of the input of the 25 paths to the input port of the power combiner, and fig. 5 shows the simulation result of the output of the 25 paths to the output port of the power combiner.
If total reflection occurs, the power reflected to each input circuit is calculated as:
73.6dBm-0.3dB-6.5dB-14.5dB-30dB-9.5dB＝12.8dBm(<20mW)
therefore, under the conditions of maximum output power and total reflection of the 25-path power combiner, the power reflected to each input circuit is small, and the use safety of the whole system can be ensured under the condition of total reflection.
Furthermore, fig. 6 shows the degree of isolation between adjacent input ports of the power combiner without adding any isolator. Fig. 7 shows the degree of isolation between adjacent input ports of the power combiner in the case where an isolator is provided. It can be seen that, without adding any isolator, the noise between adjacent input ports of the power combiner is larger than that between adjacent input ports of the power combiner provided with the isolator. Specifically, the isolation of the latter is improved by 30dB from that of the former. In conclusion, the isolator is added, so that mutual interference between adjacent input circuits can be avoided, and the stability of the whole system is improved.
Further, fig. 8 shows a schematic diagram of a power divider and a power combiner in back-to-back cascade. Fig. 9 shows the transmission characteristics of the input port and the output port without adding any isolator. Fig. 10 shows the transmission characteristics of the input port and the output port in the case where the isolator is configured. From this, it was found that the return loss was deteriorated and the insertion loss was increased without the isolator, while the return loss was not substantially deteriorated when the isolator was disposed. Thus, the power combining module configured with the isolator can improve standing waves between the input circuit and the power combining module cascade, thereby improving the stability of the power combining system.
Fig. 11 is a schematic diagram of a power combining circuit in an embodiment of the present invention, which is applicable to a case where multiple input signals are power combined to obtain a single signal. As shown in fig. 11, the power combining circuit 400 of the present embodiment specifically includes: at least two input circuits 410, the power combining module 100 according to any of the embodiments of the present invention, and an output circuit 420;
the input circuit 410 is connected to the input end 200 of the power combining module 100, and the input circuit 410 is used for providing an input signal to be combined to the power combining module 100;
the output end 300 of the power combining module 100 is connected to the output circuit 420, and is configured to perform power combining on the input signals provided by the input circuits 410 to obtain amplified power signals, and output the amplified power signals to the output circuit 420;
the output circuit 420 is used for receiving the amplified power signal provided by the power combining module 100.
Generally, the power combiner is applied in a communication scenario, and for example, the input circuit includes a radio frequency signal generating circuit, for example, a baseband chip, a radio frequency chip, and a signal processing circuit (such as a filter circuit and an analog-to-digital converter, etc.), and in addition, other components may also be included, to this end, embodiments of the present invention are not limited specifically. The output circuit comprises an antenna system, illustratively, the output circuit comprises an antenna, and the output circuit transmits the amplified power signal after receiving the amplified power signal, so that other communication devices can receive the amplified power signal and analyze the amplified power signal to obtain more accurate communication data.
In addition, the input circuits 410 connected to different input terminals 200 of the power combining module 100 may be different or the same. Fig. 11 is merely a diagram illustrating a situation that the input circuits 410 connected to different input terminals 200 may be different, and the input circuits 410 connected to different input terminals 200 may be the same, and may be specifically set as required, and thus, the embodiment of the present invention is not limited specifically.
The embodiment of the utility model provides a through the power combiner who disposes distributed configuration isolator in the circuit, improve the isolation effect between each adjacent input of power combiner to and reduce the standing wave between power combiner and every input, lead to the damage condition that too high voltage reflection arouses to each input, thereby, improve the stability of power synthesis circuit, improve the feasibility of power synthesis module simultaneously.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (1)
1. A power combining circuit comprising at least two input circuits, a power combining module, and an output circuit;
the input circuit is connected with the input end of the power synthesis module, the input circuit is used for providing input signals to be synthesized for the power synthesis module, the input circuit comprises a radio frequency signal generation circuit, the radio frequency signal generation circuit comprises a baseband chip, a radio frequency chip and a signal processing circuit, and the signal processing circuit comprises a filter circuit and an analog-to-digital converter;
the output end of the power synthesis module is connected with the output circuit and used for performing power synthesis on the input signals provided by the input circuits to obtain amplified power signals and outputting the amplified power signals to the output circuit;
the output circuit is used for receiving the amplified power signal provided by the power synthesis module, and comprises an antenna;
the power synthesis module comprises at least two isolators and a power synthesizer;
the first end of the isolator is used as the input end of the power synthesis module and is used for receiving an input signal provided by an input circuit, the second end of the isolator is connected with the input end of the power synthesizer, the isolator is used for isolating the input circuit from an output circuit and isolating different input circuits, the power synthesizer is used for power synthesis, and the isolators connected with different input ends of the power synthesizer are different;
the output end of the power combiner is used as the output end of the power combining module and used for outputting combined power to an output circuit, the power combiner is a 25-path directional power combiner, the power combiner comprises at least two input ends, each input end is connected with an isolator, the radial power combiner is an air medium non-resonant radial transmission line structure, input ports are equally spaced along the periphery of a parallel plate radial transmission line, output power is obtained at an output port, the input structure is a coaxial probe or a rectangular waveguide, and the power combiner comprises an amplifier and a transistor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921851112.2U CN211879584U (en) | 2019-10-29 | 2019-10-29 | Power combining module and power combining circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921851112.2U CN211879584U (en) | 2019-10-29 | 2019-10-29 | Power combining module and power combining circuit |
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| CN211879584U true CN211879584U (en) | 2020-11-06 |
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| CN201921851112.2U Active CN211879584U (en) | 2019-10-29 | 2019-10-29 | Power combining module and power combining circuit |
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