CN216488453U

CN216488453U - Miniaturized big dipper frequency channel four ways power combiner

Info

Publication number: CN216488453U
Application number: CN202123068767.2U
Authority: CN
Inventors: 李春利; 于海龙; 孙满盈
Original assignee: Zhengzhou Yulin Electronic Technology Co ltd
Current assignee: Zhengzhou Yulin Electronic Technology Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-05-10
Anticipated expiration: 2031-12-08

Abstract

The utility model relates to a miniaturized big dipper frequency channel four ways power combiner, include two-stage synthetic structure, four ways input port and output port all the way, first order synthetic structure is used for synthesizing four ways input port's input signal into two way signals, the second level synthetic structure is used for synthesizing two way signals into signal and output all the way, power combiner includes the box body and sets up two merits branch wares in the box body, two delivery outlets that the ware was divided to two merits are regarded as the input port of two way signals in first order synthetic structure output respectively, the output port of the input port of ware is divided as the delivery outlet of the signal all the way of second level synthetic structure output to two merits. The utility model has the characteristics of simple structure, small, light in weight, the high isolation that can realize the port simultaneously satisfies the operation requirement.

Description

Miniaturized big dipper frequency channel four ways power combiner

Technical Field

The utility model belongs to the technical field of power synthesis, concretely relates to miniaturized big dipper frequency channel four ways power combiner.

Background

The Beidou third-grade global satellite navigation system is deployed and opened in 2020, formally provides positioning, navigation and other services for the whole world, and becomes the two largest global satellite navigation systems together with the American global positioning system. The Beidou satellite communication technology can realize two-way short digital message communication and has the characteristics of wide coverage range, safe information encryption transmission and the like.

The solid-state amplifier has the characteristics of high reliability and small volume and mass, but the solid-state amplifier has low single output power due to the limitation of physical characteristics, and a power synthesizer is generally used in the industry to realize the output of high-power signals of an all-solid-state circuit structure.

The existing power synthesis technology mainly comprises space synthesis and circuit synthesis, and the advantage of the space synthesis is that the synthesis efficiency is basically irrelevant to the number of solid-state devices, and the power synthesis technology is more suitable for high-power output of multiple devices. However, space synthesis is applied to microwave, millimeter wave frequency channel more, and prior art space power synthesizer has the problem that the structure is complicated, the volume is great, and the requirement of military navigation product to weight and volume is very strict, therefore power synthesizer's miniaturization becomes an important key index to the product, to above-mentioned problem, the utility model provides an use circuit synthesis technique, simple structure, small, light in weight's miniaturized big dipper frequency channel four ways power synthesizer.

Disclosure of Invention

The utility model aims at overcoming prior art's is not enough, and provide a miniaturized big dipper frequency channel four ways power combiner, have simple structure, small, light in weight's characteristics, can realize the high isolation of port simultaneously, satisfy the operation requirement.

The utility model adopts the technical proposal that: a miniaturized Beidou frequency band four-path power synthesizer comprises a two-stage synthesis structure, four-path input ports and one-path output ports, wherein the first-stage synthesis structure is used for synthesizing input signals of the four-path input ports into two-path signals, the second-stage synthesis structure is used for synthesizing the two-path signals into one-path signals and outputting the signals, the power synthesizer comprises a box body and two power dividers arranged in the box body, two output ports of the two power dividers are respectively used as input ports of the two-path signals output by the first-stage synthesis structure, and input ports of the two power dividers are used as output ports of the one-path signals output by the second-stage synthesis structure;

the first-stage synthesis structure adopts a lumped parameter structure, the lumped parameter structure comprises a first capacitor, a second capacitor, a first inductor, a second inductor, a first isolation resistor and a second isolation resistor, the first capacitor is provided with four input ports which are respectively connected with four input ports, the other end of the first capacitor is grounded, the output ends of the first input port and the second input port are connected through the first isolation resistor, the output ends of the third input port and the fourth input port are connected through the second isolation resistor, the first inductor is provided with two inductors which are respectively connected with two ends of the first isolation resistor, the other ends of the two inductors are connected with the same input end of the second-stage synthesis structure, the second inductor is provided with two inductors which are respectively connected with two ends of the second isolation resistor, and the other ends of the two inductors are both connected with the other input end of the second-stage synthesis structure, the second capacitor is provided with two capacitors and is respectively connected with two input ends of the second-stage synthesis structure, the other end of the second capacitor is grounded, the second-stage synthesis structure comprises a third isolation resistor, and the third isolation resistor is connected with a microstrip structure of the two power dividers.

Preferably, the two-stage power divider is a two-stage Wilkinson power divider, and the two-stage Wilkinson power divider is of a symmetrical structure.

Preferably, the microstrip structure includes two microstrip lines, the two microstrip lines respectively correspond to the two paths of signals output by the first-stage synthesis structure, and two ends of the third isolation resistor are respectively connected to the two microstrip lines.

Preferably, the maximum power of the microstrip structure is 100W.

Preferably, three ground circuits are arranged in the box body, the three ground circuits are respectively located in the middle and two sides of the first-stage synthesis structure, the four input ports are divided into two by the middle ground circuit, one ends of the first capacitor and the second capacitor are connected with the input ports, and the other ends of the first capacitor and the second capacitor are respectively connected with the corresponding ground circuits.

Preferably, the box body is an aluminum box body, one end of the box body is connected with four input connecting pipe orifices with jacks, the four input connecting pipe orifices correspond to four input ports respectively, and the other end of the box body is connected with an output connecting pipe orifice with a jack, and the output connecting pipe orifice corresponds to an output port.

The utility model has the advantages that: the utility model adopts a centralized parameter structure, uses independent elements to reduce the volume and weight of the power synthesizer, adopts a two-stage Wilkinson power divider structure in the circuit part, has simple structure and is easy to carry out engineering debugging; in order to realize high isolation of the port, the circuit is processed by adopting an isolation resistor, so that the power requirement of a radio frequency device in a Beidou frequency band can be met; an aluminum box body is designed, and three paths of grounding circuits are designed, so that the heat dissipation of the power combiner can be ensured.

Drawings

Fig. 1 is a schematic external structural view of the present invention;

fig. 2 is a circuit topology diagram of the present invention.

In the figure: 1. the power divider comprises an input port 2, an output port 3, a box body 4, two power dividers 5, a first capacitor 6, a second capacitor 7, a first inductor 8, a second inductor 9, a first isolation resistor 10, a second isolation resistor 11, a third isolation resistor 12, a microstrip line 13, a grounding circuit 14, an input connecting pipe orifice 15 and an output connecting pipe orifice.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention, and are specifically described below with reference to the embodiments.

As shown in fig. 1 and 2, a miniaturized Beidou frequency band four-path power combiner includes a two-stage combining structure, four-path input ports 1 and one-path output ports 2, the first-stage combining structure is used for combining input signals of the four-path input ports 1 into two-path signals, the second-stage combining structure is used for combining the two-path signals into one-path signals and outputting the one-path signals, the power combiner includes a box body 3 and two power dividers 4 arranged in the box body 3, the two power dividers 4 are two-stage Wilkinson power dividers, the two-stage Wilkinson power dividers are of symmetrical structures, two output ports of the two power dividers 4 are respectively used as input ports of the two-path signals output by the first-stage combining structure, and input ports of the two power dividers 4 are used as output ports of one-path signals output by the second-stage combining structure;

the first-stage synthesis structure adopts a lumped parameter structure, the lumped parameter structure comprises a first capacitor 5, a second capacitor 6, a first inductor 7, a second inductor 8, a first isolation resistor 9 and a second isolation resistor 10, the first capacitor 5 is provided with four circuits which are respectively connected with four input ports 1, the other end of the first capacitor 5 is grounded, the output ends of the first and second input ports 1 are connected through the first isolation resistor 9, the output ends of the third and fourth input ports 1 are connected through the second isolation resistor 10, the first inductor 7 is provided with two circuits which are respectively connected with two ends of the first isolation resistor 9, the other ends of the two first inductors 7 are connected with the same input end of the second-stage synthesis structure, the second inductor 8 is provided with two circuits which are respectively connected with two ends of the second isolation resistor 10, the other ends of the two second inductors 8 are both connected with the other input end of the second-stage synthesis structure, the second capacitor 6 is provided with two and is connected with two input ends of a second-stage synthesis structure respectively, the other end of the second capacitor 6 is grounded, the second-stage synthesis structure comprises a third isolation resistor 11, the third isolation resistor 11 is connected with a microstrip structure of the two power dividers 4, the highest bearing power of the microstrip structure is 100W, the microstrip structure comprises two microstrip lines 12, the two microstrip lines 12 correspond to two paths of signals output by the first-stage synthesis structure respectively, and two ends of the third isolation resistor 11 are connected with the two microstrip lines 12 respectively.

The utility model discloses a power combiner, including box body 3, be provided with three routes ground circuit 13 in the box body 3, three routes ground circuit 13 is located first order synthetic structure's centre and both sides respectively, and the ground circuit 13 that is located the centre separates two liang of four ways input port 1, the one end of first electric capacity 5 and second electric capacity 6 all is connected with input port 1, the other end of first electric capacity 5 and second electric capacity 6 is connected with corresponding ground circuit 13 respectively, box body 3 is the aluminium box body, the one end of box body 3 is connected with four input connection mouth of pipe 14 that have the jack, corresponds to four input port 1 respectively, the other end of box body 3 is connected with an output connection mouth of pipe 15 that has the jack, and corresponding to output port 2, the design of aluminium box body 3 and ground circuit 13 can guarantee power combiner's heat dissipation.

The utility model discloses a reduce power combiner's volume and weight, first order synthetic structure adopts the lumped parameter structure and uses independent component, four ways signal gets into first order Wilkinson merit through N type high frequency connector and divides the ware structure, use first electric capacity 5 and second electric capacity 6 to filter power combiner's input signal, merge after first inductance 7 and second inductance 8 carry out phase compensation to big dipper signal, guarantee the synthetic radio frequency signal that power combiner can be complete, and reduce the insertion loss in the synthetic process, the ware is divided to second order Wilkinson merit uses microstrip structure, merge two way signals to first order output, the ware adopts symmetrical structure is divided to second order Wilkinson merit. The port isolation is an important parameter of the power synthesizer, in order to ensure the port isolation conforming to the parameter, the designed power synthesizer uses a first isolation resistor 9, a second isolation resistor 10 and a third isolation resistor 11 for processing, the first-stage output end and the second-stage output end of the power synthesizer are in the same phase, the isolation resistors do not consume any power, when a signal is reflected at the port, one part of reflected power is transmitted to the other port through the isolation resistors, the other part of reflected power is reflected back to the corresponding input end, the signal voltages at the two ends of the isolation resistors are just opposite, and finally the signal voltages are absorbed on the isolation resistors, so that the high isolation of the port is realized, and the power requirement of a radio frequency device in the Beidou frequency band can be met.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a miniaturized big dipper frequency channel four ways power combiner, includes two-stage synthetic structure, four ways input port and output port all the way, its characterized in that: the power combiner comprises a box body and two power dividers arranged in the box body, two output ports of the two power dividers are respectively used as input ports of the two signals output by the first-stage combining structure, and input ports of the two power dividers are used as output ports of one signal output by the second-stage combining structure;

2. The miniaturized Beidou frequency band four-path power combiner according to claim 1, is characterized in that: the two-stage power divider is a two-stage Wilkinson power divider which is of a symmetrical structure.

3. The miniaturized Beidou frequency band four-path power combiner according to claim 1, is characterized in that: the microstrip structure comprises two microstrip lines, the two microstrip lines respectively correspond to two paths of signals output by the first-stage synthesis structure, and two ends of the third isolation resistor are respectively connected with the two microstrip lines.

4. The miniaturized Beidou frequency band four-path power combiner according to claim 1, is characterized in that: the maximum power of the microstrip structure is 100W.

5. The miniaturized Beidou frequency band four-path power combiner according to claim 1, is characterized in that: the box body is internally provided with three grounding circuits which are respectively positioned in the middle and two sides of the first-stage synthesis structure, the four input ports are separated by the middle grounding circuit in pairs, one ends of the first capacitor and the second capacitor are connected with the input ports, and the other ends of the first capacitor and the second capacitor are respectively connected with the corresponding grounding circuits.

6. The miniaturized Beidou frequency band four-path power combiner according to claim 1, is characterized in that: the box body is an aluminum box body, one end of the box body is connected with four input connecting pipe orifices with jacks, the four input connecting pipe orifices correspond to four input ports respectively, and the other end of the box body is connected with an output connecting pipe orifice with a jack, and the output connecting pipe orifice corresponds to an output port.