CN103985945A - Prismatic multi-path power distributor/ synthesizer based on fan-shaped branch microstrip line - Google Patents
Prismatic multi-path power distributor/ synthesizer based on fan-shaped branch microstrip line Download PDFInfo
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- CN103985945A CN103985945A CN201410201523.2A CN201410201523A CN103985945A CN 103985945 A CN103985945 A CN 103985945A CN 201410201523 A CN201410201523 A CN 201410201523A CN 103985945 A CN103985945 A CN 103985945A
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Abstract
The invention provides a prismatic multi-path power distributor/synthesizer based on a fan-shaped branch microstrip line. The prismatic multi-path power distributor/synthesizer based on the fan-shaped branch microstrip line is wholly prismatic and comprises a power distribution section and a power synthesis section, wherein the power distribution section and the power synthesis section are of the same structure, electromagnetic waves enter a cavity through an input end coaxial connector, and synthesized high-power signals are output from the cavity through an output end coaxial connector. An impedance deploy hole is punctured in a microstrip planar circuit of a fan-shaped branch power distribution/synthesis structure, the isolation among branches can be improved, the whole structure is connected through microstrip patches, and therefore the power distribution/synthesis structure can achieve a wide work frequency band. According to the requirement of actual power synthesis, by reasonably designing the size and position of the impedance deploy hole and the radius of the fan shape, equal-power distribution of all the branches can be achieved, and different power distribution/synthesis path numbers can be achieved conveniently according to the needs.
Description
Technical field
The present invention relates to microwave regime, particularly a kind of multichannel power division/synthesizer.
Background technology
Microwave and millimeter wave solid-state power amplifier, as an important component part of the systems such as microwave and millimeter wave radar, guidance and communication, test, has become the important directions of microwave and millimeter wave area research.In microwave and millimeter wave solid-state power amplifier, because power amplifier chips is subject to the restriction of self Semiconductor Physics characteristic, and the impact of the problem such as heat radiation, manufacturing process and impedance matching, single-chip amplifier does not often reach the requirement of high-power signal in Practical Project.Therefore,, in order to meet the powerful demands such as communication, test macro, need to adopt multiple amplifier branch roads to carry out the synthetic method of power.Conventional power division/synthetic technology has the spatial power distribution/synthetic technology based on waveguide and the power division/synthetic technology based on planar microstrip circuit.
As shown in Figure 1, spatial power distribution/synthetic technology based on waveguide adopts coaxial-waveguide transformational structure, give each branch road by probe coupling by the energy distribution of input signal again, then amplified respectively by each branch road, finally by carry out power synthetic with power division symmetrical structure above.Spatial power synthetic technology based on waveguide can prevent radiation loss effectively, have that path loss is low, radiating efficiency is high, amplitude-phase consistency is high and the advantage such as power capacity is large, but the processing cost of waveguiding structure is high, craft precision requires high, processing is large with assembly difficulty, and mainly concentrate on higher millimeter wave frequency band application, this technology is difficult to accomplish wider working band in lower microwave frequency band, at the microwave frequency band lower than 18GHz, waveguide power division/composite structure, due to oversize, is difficult to be applied in Practical Project.
Micro-ly can be operated in lower microwave frequency band with power division/synthetic technology, be particularly suitable for the following frequency range of 18GHz, and there is the advantages such as processing cost is low, the little and working band of taking up room is wide, but the poor radiation of conventional plane multipath microstrip power division/synthetic method, path loss is large, therefore,, in the time that synthetic way exceedes 4 tunnel, the method causes combined coefficient to reduce because path loss increases rapidly.
Summary of the invention
The present invention proposes a kind of prism-shaped multichannel power division/synthesizer based on fan-shaped branch microstrip line, effectively improve the radiating efficiency of power division/synthesizer, increase bandwidth of operation, reduce loss, solve traditional scheme and be difficult to realize the synthetic technical barrier of multichannel power at lower microwave frequency band.
Technical scheme of the present invention is achieved in that
A kind of prism-shaped multichannel power division/synthesizer based on fan-shaped branch microstrip line, entirety becomes prism shape, comprise: power division section and power synthesis stage, power division section and power synthesis stage are same structure, electromagnetic wave enters cavity by input coaxial connector, and synthetic high-power signal is by output coaxial connector output cavity;
Described power division section, comprise power splitter, will be divided into two tunnels from the electromagnetic wave of input coaxial connector input, each road signal enters respectively fan-shaped offset of microstrip sheet, the merit separation structure that described fan-shaped offset of microstrip sheet is a multiport, by input signal constant amplitude homophase power division;
The edge of the each branch road of described power division section carries out even chamfering twice to cavity, attaches micro strip at chamfering plane place, respectively saves between micro strip and is connected by golden net;
On the side of prism vertical direction, be provided with amplifier chip, divide amplification by the amplifier chip on branch road separately by further the signal power of distribution merit, by twice chamfering structure symmetrical with power division section, each road amplifying signal is turned to the power composite structure of power synthesis stage horizontal direction by prism vertical direction, each tributary signal constant amplitude homophase power is synthetic, and synthetic high-power signal is exported by output coaxial connector.
Alternatively, described twice chamfering is respectively downward 30 degree of level and 60 degree chamferings.
Alternatively, in described fan-shaped offset of microstrip sheet fan-shaped line, each output port interval is respectively provided with an impedance allotment hole.
Alternatively, described power splitter is Wilkinson power divider.
Alternatively, the merit separation structure that described fan-shaped offset of microstrip sheet is a five-port, by one point of fourth class width homophase power division of input signal.
The invention has the beneficial effects as follows:
(1) working band is wide: have advantages of that working band is wide, solved broadband power division/synthetic difficult problem of the lower microwave frequency band below 18GHz;
(2) power output is large: adopted single channel amplification, the last synthetic method of multichannel power has realized higher power output;
(3) radiating efficiency is high: due to conventional plane amplifier chain is converted to three-D space structure, obtained larger space heat elimination area, therefore good heat dissipation effect, has improved the reliability of amplifier work;
(4) lower power loss: whole power division/synthesizer all adopts low-loss microstrip line transmission, and impedance matching is good, and signal reflex is little, and path loss is low;
(5) high amplitude-phase consistency: this structure planar adopts axisymmetric multichannel power division/synthesized form, and overall structure symmetry is good, has effectively reduced the power loss that the inconsistency of width phase is brought, and has improved the synthetic efficiency of power;
(6) process and assemble is simple: this structure processing flexibility is good, and processing cost is low, easily assembling, and reliability is high.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the cavity body structure schematic diagram of the existing space power divider/combiner based on waveguide;
Fig. 2 is the cavity body structure figure that the present invention is based on the prism-shaped multichannel power division/synthesizer of fan-shaped branch microstrip line;
Fig. 3 is the micro-band power division of fan-shaped branch of the present invention/synthetic microstrip circuit schematic diagram;
Fig. 4 is the twice chamfering microstrip circuit schematic diagram that completes the conversion of level-vertical direction of the present invention;
Fig. 5 is prism vertical plane branch circuit internal structure schematic diagram of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
In existing power division/synthetic technology, the spatial power distribution/synthetic schemes based on waveguide, its shortcoming is that requirement on machining accuracy is high, assembly difficulty is large, and operating frequency is high, poor reliability etc., due to the restriction of physical size, this structure is difficult to be applied to the microwave frequency band of lower frequency; Planar power distribution/synthetic schemes based on microstrip circuit, its shortcoming is that radiating efficiency is low, especially, in the time that synthetic way exceedes 4 tunnel, the method causes combined coefficient to reduce because path loss increases rapidly.
Object of the present invention is exactly in order to solve broadband power division in lower microwave frequency band and a synthetic difficult problem.Adopt power division/synthesizer working band of the present invention wide, amplitude-phase consistency is high, and path loss is little, and synthetic way is many, and have difficulty of processing little, assemble the advantages such as simple, be particluarly suitable for the microwave frequency band application below 18GHz.
As shown in Figure 2, prism-shaped multichannel power division/synthesizer based on fan-shaped branch microstrip line of the present invention, entirety becomes prism-shaped, comprises power division section and power synthesis stage, and power division section and power synthesis stage are the identical micro-band power division/composite structure of fan-shaped branch; Electromagnetic wave enters cavity by the input coaxial connector 1 of upside, and finally synthetic high-power signal is exported cavity by output coaxial connector 7.
As shown in Figures 2 and 3, the micro-band power division/composite structure of fan-shaped branch of the present invention, electromagnetic wave is entered after cavity by input coaxial connector 1, be divided into two tunnels by power splitter 2, preferably power splitter 2 is Wilkinson power divider, each road signal enters respectively fan-shaped offset of microstrip sheet 3, fan-shaped offset of microstrip sheet 3 is merit separation structures of a multiport, in fan-shaped line, each output port interval is respectively provided with an impedance allotment hole 4, under the prerequisite that ensures less insertion loss and each branch road constant amplitude homophase, realize the good isolation between each branch road, so just complete the constant amplitude homophase power division more than a point.For example, in Fig. 3, fan-shaped offset of microstrip sheet 3 is merit separation structures of a five-port, in fan-shaped line, each output port interval is respectively provided with an impedance allotment hole 4, realize the constant amplitude homophase power division of a point four, structure in Fig. 3 is only exemplary, should not serve as limiting the scope of the invention, those skilled in the art can be synthetic according to actual power needs, by size and position and the fan-shaped radius in appropriate design impedance allotment hole, the constant power that can realize each branch road distributes, simultaneously, by the transition structure between appropriate design fan-shaped line and microstrip line, realize as required different power division/synthetic way.
In micro-edge with the each branch road of Distributed Power Architecture of fan-shaped branch, be upper and lower surface and the intersection, side of prism, as shown in Figure 4, cavity is carried out to even chamfering 5 twice, downward 30 degree of the level that is respectively and 60 degree chamferings, for the ease of processes, can adopt the chamfering of 30 degree and 60 degree, these two angles also can be adjusted accordingly according to needs different in Practical Project certainly; In chamfering, micro strips are pasted at 5 plane places, respectively save between micro strip with gold net interconnectedly, have so just formed each route horizontal plane and turn to the prism-shaped power delivery structure of vertical plane.The transition of micro strip from prismatic structure horizontal plane to vertical plane realized by twice chamfering at cavity edge, and twice chamfering transition is even, realized respectively by downward 30 degree of horizontal plane and 60 degree cuttings; Interconnected by gold net between the micro strip at chamfering place, difficulty of processing is little, assembles simple and easyly, and reliability is high, avoided due to micro strip directly bending cause micro-break and the problem of imperfect earth with metal level; And total be all adopt micro strip connect, so this power division/composite structure can be realized wide working band.
As shown in Fig. 2 and 5, on the side of prism vertical direction, be provided with amplifier chip 6, divide amplification by the amplifier chip 6 on branch road separately by further the signal power of distribution merit, and then by twice chamfering structure symmetrical with power division section, each road amplifying signal is turned to the power composite structure of power synthesis stage horizontal direction by prism vertical direction, realize the constant amplitude homophase power of multiple signals through the fan-shaped offset of microstrip power composite structure shown in Fig. 3 more synthetic, finally synthetic high-power signal completes output by output coaxial connector 7.Input signal arrives after each branch road of prism vertical plane, carry out power amplification by amplifier chip again, then synthesize by carrying out power with the export structure of input section symmetry, compact overall structure and symmetry are good, space availability ratio is high, each branch road contacts with air fully with fin, and thermal diffusivity is good, and reliability is high.
The present invention proposes a kind of prism-shaped multichannel power division/synthesizer based on fan-shaped branch microstrip line, on planar circuit, realize the constant amplitude homophase power division of many branch roads with synthetic, by carrying out twice chamfering between the upper and lower surface at prism cavity and side, adopt subsides micro strip and the interconnected mode of gold net to realize the space upset of horizontal plane to vertical plane, and technology difficulty is low, assembling is simple, and reliability is high; Adopt symmetrical prismatic structure, not only saved assembly space, and efficiently solve heat dissipation problem, therefore, the job stability of whole system is high; Due in this structure except input and output connector, signal transmission form is all made up of microstrip line, so have, impedance matching is good, assembling consistency advantages of higher, can work and have wider relative working band at lower microwave band (below 18GHz); By the high reliability of planar power distribution/synthesizer with spatial power distribution/composite structure thermal diffusivity is good etc. that advantage combines, meet the high request to many aspects such as high amplitude-phase consistency, high cooling efficiency and low-losses in power division/synthetic technology.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. the prism-shaped multichannel power division/synthesizer based on fan-shaped branch microstrip line, it is characterized in that, entirety becomes prism shape, comprise: power division section and power synthesis stage, power division section and power synthesis stage are same structure, electromagnetic wave enters cavity by input coaxial connector, and synthetic high-power signal is by output coaxial connector output cavity;
Described power division section, comprise power splitter, will be divided into two tunnels from the electromagnetic wave of input coaxial connector input, each road signal enters respectively fan-shaped offset of microstrip sheet, the merit separation structure that described fan-shaped offset of microstrip sheet is a multiport, by input signal constant amplitude homophase power division;
The edge of the each branch road of described power division section carries out even chamfering twice to cavity, attaches micro strip at chamfering plane place, respectively saves between micro strip and is connected by golden net;
On the side of prism vertical direction, be provided with amplifier chip, by the amplifier chip on branch road separately, the signal power of distribution is further amplified, by twice chamfering structure symmetrical with power division section, each road amplifying signal is turned to the power composite structure of power synthesis stage horizontal direction by prism vertical direction, each tributary signal constant amplitude homophase power is synthetic, and synthetic high-power signal is exported by output coaxial connector.
2. the prism-shaped multichannel power division/synthesizer based on fan-shaped branch microstrip line as claimed in claim 1, is characterized in that, described twice chamfering is respectively downward 30 degree of level and 60 degree chamferings.
3. the prism-shaped multichannel power division/synthesizer based on fan-shaped branch microstrip line as claimed in claim 1, is characterized in that, in described fan-shaped offset of microstrip sheet fan-shaped line, each output port interval is respectively provided with an impedance allotment hole.
4. the prism-shaped multichannel power division/synthesizer based on fan-shaped branch microstrip line as claimed in claim 1, is characterized in that, described power splitter is Wilkinson power divider.
5. the prism-shaped multichannel power division/synthesizer based on fan-shaped branch microstrip line as claimed in claim 1, is characterized in that, the merit separation structure that described fan-shaped offset of microstrip sheet is a five-port, by one point of fourth class width homophase power division of input signal.
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| CN201410201523.2A CN103985945B (en) | 2014-05-07 | 2014-05-07 | Prismatic multi-path power distributor/ synthesizer based on fan-shaped branch microstrip line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112993508A (en) * | 2021-02-10 | 2021-06-18 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Ka-band one-to-eight microstrip sector power divider |
| TWI750697B (en) * | 2020-06-17 | 2021-12-21 | 正基科技股份有限公司 | Resonance body and power dividing and combining device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4947143A (en) * | 1989-05-23 | 1990-08-07 | Massachusetts Institute Of Technology | Multiport power divider-combiner |
| US20070279148A1 (en) * | 2006-06-06 | 2007-12-06 | Rector Robert M | Microwave combiner/splitter |
| CN101621149A (en) * | 2008-07-01 | 2010-01-06 | 电子科技大学 | Method for designing microwave and millimeter-wave spatial power synthesis amplifier |
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2014
- 2014-05-07 CN CN201410201523.2A patent/CN103985945B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4947143A (en) * | 1989-05-23 | 1990-08-07 | Massachusetts Institute Of Technology | Multiport power divider-combiner |
| US20070279148A1 (en) * | 2006-06-06 | 2007-12-06 | Rector Robert M | Microwave combiner/splitter |
| CN101621149A (en) * | 2008-07-01 | 2010-01-06 | 电子科技大学 | Method for designing microwave and millimeter-wave spatial power synthesis amplifier |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI750697B (en) * | 2020-06-17 | 2021-12-21 | 正基科技股份有限公司 | Resonance body and power dividing and combining device |
| US11962060B2 (en) | 2020-06-17 | 2024-04-16 | Ampak Technology Inc. | Resonance body and power dividing and combining device |
| CN112993508A (en) * | 2021-02-10 | 2021-06-18 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Ka-band one-to-eight microstrip sector power divider |
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Effective date of registration: 20190416 Address after: 266000 No. 98 Xiangjiang Road, Huangdao District, Qingdao City, Shandong Province Patentee after: China Electronics Technology Instrument and Meter Co., Ltd. Address before: 266555 No. 98 Xiangjiang Road, Qingdao economic and Technological Development Zone, Shandong Patentee before: The 41st Institute of CETC |
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Address after: Huangdao Xiangjiang Road 266555 Shandong city of Qingdao Province, No. 98 Patentee after: CLP kesiyi Technology Co.,Ltd. Address before: 266000 No. 98 Xiangjiang Road, Huangdao District, Shandong, Qingdao Patentee before: CHINA ELECTRONIC TECHNOLOGY INSTRUMENTS Co.,Ltd. |