CN103985945B - 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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- CN103985945B CN103985945B CN201410201523.2A CN201410201523A CN103985945B CN 103985945 B CN103985945 B CN 103985945B CN 201410201523 A CN201410201523 A CN 201410201523A CN 103985945 B CN103985945 B CN 103985945B
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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 to a kind of multichannel power divider/synthesizer.
Background technology
Microwave and millimeter wave solid-state power amplifier as microwave and millimeter wave radar, guide and communicate, test etc. is
One important component part of system, has become as the important directions of microwave and millimeter wave area research.At microwave milli
In metric wave solid-state power amplifier, owing to power amplifier chips is limited by self Semiconductor Physics characteristic, and dissipate
The impact of the problems such as heat, manufacturing process and impedance matching, single-chip amplifier does not often reach in Practical Project
The requirement of high-power signal.Therefore, in order to meet the powerful demand such as communication, test system, need to adopt
The method carrying out power combing with multiple amplifier branch.Conventional power distribution/synthetic technology has based on waveguide
Spatial power distribution/synthetic technology and power based on planar microstrip circuit distribution/synthetic technology.
As it is shown in figure 1, spatial power distribution/synthetic technology based on waveguide uses coaxial-waveguide transformational structure,
By probe coupling, the energy of input signal is distributed to each branch road again, is then amplified respectively by each branch road,
Power combing is carried out finally by with above power distribution symmetrical structure.Space power synthesis based on waveguide
Technology can be effectively prevented radiation loss, has that path loss is low, radiating efficiency is high, amplitude-phase consistency is high
And the advantage such as power capacity is big, but the processing cost of waveguiding structure is high, and craft precision requires height, processes and fills
Joining difficulty big, and be concentrated mainly on higher millimeter wave frequency band application, this technology is difficult at relatively low Microwave Frequency
Wider working band is accomplished, at the microwave frequency band less than 18GHz, waveguide power distribution/composite structure in Duan
Due to oversize, it is difficult to be applied in Practical Project.
Micro-strip power distribution/synthetic technology can be operated in relatively low microwave frequency band, is particularly suitable for 18GHz
Following frequency range, and have that processing cost is low, it is little to take up room and the advantage such as working band width, but routine is flat
The poor radiation of face multipath microstrip power distribution/synthetic method, path loss is big, therefore, when synthesis way surpasses
When crossing 4 tunnel, the method causes combined coefficient to reduce owing to path loss increases rapidly.
Summary of the invention
The present invention proposes a kind of prism-shaped multichannel power divider/synthesizer based on fan-shaped branch microstrip line, effectively
Improve the radiating efficiency of power divider/synthesizer, increase bandwidth of operation, reduce loss, solve tradition side
Case is difficult to realize the technical barrier of multichannel power combing at relatively low microwave frequency band.
The technical scheme is that and be achieved in that:
A kind of prism-shaped multichannel power divider/synthesizer based on fan-shaped branch microstrip line, overall one-tenth prism
Shape, including: power dispensing section and power combing section, power dispensing section and power combing section are identical structure, electricity
Magnetic wave is entered cavity by input coaxial connector, and the high-power signal of synthesis is defeated by outfan coaxial connector
Go out cavity；
Described power dispensing section, including power splitter, the electromagnetic wave decile that will input from input coaxial connector
Being two tunnels, each road signal respectively enters fan-shaped offset of microstrip sheet, and described fan-shaped offset of microstrip sheet is the merit of a multiport
Separation structure, distributes input signal constant amplitude homophase power；
The edge of the described each branch road of power dispensing section carries out twice uniform chamfering to cavity, at chamfer plane
Attach micro strip, be connected by gold net between each joint micro strip；
The side of prism vertical direction is provided with amplifier chip, by the amplifier core on respective branch road
Further for the signal power of distribution merit is divided amplification by sheet, is tied by twice chamfering symmetrical with power dispensing section
Structure, amplifies each road signal and is turned to the power conjunction of power combing section horizontal direction by prism vertical direction
Becoming structure, by each tributary signal constant amplitude homophase power combing, the high-power signal of synthesis is coaxially connected by outfan
Connect device output.
Alternatively, described twice chamfering is respectively level downward 30 degree and 60 degree of chamferings.
Alternatively, it is each provided with an impedance in described fan-shaped offset of microstrip sheet fan-shaped line at each output port interval to adjust
Distribution.
Alternatively, described power splitter is Wilkinson power divider.
Alternatively, described fan-shaped offset of microstrip sheet is the merit separation structure of five ports, by one point of fourth class of input signal
Width homophase power distributes.
The invention has the beneficial effects as follows:
(1) working band width: have the advantage that working band is wide, solves the relatively low microwave of below 18GHz
A difficult problem for the wideband power distribution/synthesis of frequency range；
(2) output is big: have employed single channel and amplify, the method for last multichannel power combing achieves higher
Output；
(3) radiating efficiency is high: owing to conventional plane amplifier chain is converted to three-D space structure, obtain
Bigger space heat elimination area, therefore good heat dissipation effect, improve the reliability of amplifier operation；
(4) relatively low power attenuation: whole power divider/synthesizer all uses low-loss microstrip line to transmit,
Impedance matching is good, and signaling reflex is little, and path loss is low；
(5) high amplitude-phase consistency: this structure planar uses axisymmetric multichannel power distribution/synthesized form,
Overall structure symmetry is good, effectively reduces the power attenuation that the discordance of width phase is brought, improves power
The efficiency of synthesis；
(6) process and assemble is simple: this structure processing flexibility is good, and processing cost is low, easily assembles, reliability
High.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the cavity body structure schematic diagram of existing space power divider/combiner based on waveguide；
Fig. 2 is the cavity knot of present invention prism-shaped multichannel power divider/synthesizer based on fan-shaped branch microstrip line
Composition；
Fig. 3 is that the fan-shaped branch micro-strip power of the present invention distributes/synthesize microstrip circuit schematic diagram；
Fig. 4 is the twice chamfering microstrip circuit schematic diagram completing the conversion of horizontal vertical direction of the present invention；
Fig. 5 is the prism vertical branch circuit internal structure schematic diagram of the present invention.
Detailed description of the invention
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 carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
In existing power distribution/synthetic technology, spatial power distribution/synthetic schemes based on waveguide, its shortcoming is
Requirement on machining accuracy is high, and assembly difficulty is big, and operating frequency is high, and poor reliability etc., due to the limit of physical size
System, this structure is difficult to apply to the microwave frequency band of lower frequency；Planar power based on microstrip circuit distribution/close
One-tenth scheme, its shortcoming is that radiating efficiency is low, and especially when synthesizing way more than 4 tunnel, the method is due to logical
Path loss consumption increases rapidly and causes combined coefficient to reduce.
The purpose of the present invention is contemplated to the difficulty of wideband power distribution and the synthesis solving in relatively low microwave frequency band
Topic.Using the power divider/synthesizer working band width of the present invention, amplitude-phase consistency is high, and path loss is little,
Synthesis way is many, and has the advantages such as difficulty of processing is little, assembling is simple, is particluarly suitable for below 18GHz's
Microwave frequency band is applied.
As in figure 2 it is shown, the prism-shaped multichannel power divider/synthesizer based on fan-shaped branch microstrip line of the present invention,
Overall one-tenth prism-shaped, including power dispensing section and power combing section, power dispensing section and power combing Duan Weixiang
Same fan-shaped branch micro-strip power distribution/composite structure；Electromagnetic wave is entered by the input coaxial connector 1 of upside
Entering cavity, the high-power signal being finally synthesizing is exported cavity by outfan coaxial connector 7.
As shown in Figures 2 and 3, the fan-shaped branch micro-strip power distribution/composite structure of the present invention, electromagnetic wave is by defeated
Entering after terminal, coaxial coupling device 1 enters cavity, being divided into two tunnels, preferably power splitter 2 by power splitter 2 is prestige
Er Jinsen power splitter, each road signal respectively enters fan-shaped offset of microstrip sheet 3, and fan-shaped offset of microstrip sheet 3 is a multiport
Merit separation structure, in fan-shaped line, at each output port interval, be each provided with impedance allotment hole 4, ensureing
The good isolation between each branch road is achieved on the premise of less insertion loss and each branch road constant amplitude homophase, this
Sample just completes the constant amplitude homophase power distribution more than a point.Such as, in Fig. 3, fan-shaped offset of microstrip sheet 3 is one
The merit separation structure of five ports, is each provided with an impedance allotment hole 4 in fan-shaped line at each output port interval,
Achieving the constant amplitude homophase power distribution of a point four, the structure in Fig. 3 is exemplary only, and it is right to should not be used as
The restriction of scope, those skilled in the art can pass through according to the needs of actual power synthesis
The appropriate design impedance allotment size in hole and position and the radius of sector, the constant power that can realize each branch road divides
Join, meanwhile, by the transition structure between appropriate design fan-shaped line and microstrip line, realize difference as required
Power distribution/synthesis way.
Upper and lower surface and side in the edge of the fan-shaped branch each branch road of micro-strip Distributed Power Architecture, i.e. prism
Intersection, face, as shown in Figure 4, cavity is carried out twice uniform chamfering 5, respectively level downward 30 degree and
60 degree of chamferings, for the ease of processes, can use 30 degree and the chamfering of 60 degree, certain the two angle
Degree can also be adjusted correspondingly according to needs different in Practical Project；Micro-strip is pasted at chamfering 5 plane
Sheet, with gold net interconnection between each joint micro strip, material is thus formed each route horizontal plane and turns to vertical
Prism-shaped power transmission structure.Micro strip transition from prismatic structure horizontal plane to vertical is by cavity edge
Twice chamfering realize, twice chamfered transition is uniform, is cut reality by downward 30 degree and 60 degree of horizontal plane respectively
Existing；Being interconnected by gold net between micro strip at chamfering, difficulty of processing is little, and assembling is simple, and reliability is high, keeps away
Exempt from directly to bend caused micro-strip metal level due to micro strip and ruptured the problem with imperfect earth；And it is whole
Individual structure is all to use micro strip to connect, so this power distribution/composite structure can realize wide working band.
As shown in figures 2 and 5, the side of prism vertical direction is provided with amplifier chip 6, by each
Further for the signal power of distribution merit is divided amplification by the amplifier chip 6 on branch road, the most again by with power
Twice chamfering structure that dispensing section is symmetrical, is turned to merit by each road amplification signal by prism vertical direction
The power combining structures of rate synthesis stage horizontal direction, then through the fan-shaped offset of microstrip power combining structures shown in Fig. 3
Realizing the constant amplitude homophase power combing of multiple signals, the high-power signal being finally synthesizing is coaxially connected by outfan
Device 7 completes output.After input signal arrives each branch road of prism vertical, then carried out by amplifier chip
Power amplification, then carries out power combing by the export structure symmetrical with input section, compact overall structure and
Symmetry is good, and space availability ratio is high, and each branch road is abundant with fin and air contact, and thermal diffusivity is good, reliably
Property high.
The present invention proposes a kind of prism-shaped multichannel power divider/synthesizer based on fan-shaped branch microstrip line,
The distribution of constant amplitude homophase power and the synthesis of a plurality of branch road is achieved, upper by prism cavity on planar circuit
Carry out twice chamfering between lower surface and side, use the mode of patch micro strip and gold net interconnection to achieve level
Face overturns to the space of vertical, and technology difficulty is low, and assembling is simple, and reliability is high；Use symmetrical rib
Column structure, not only saves assembly space, and efficiently solves heat dissipation problem, therefore, and whole system
Job stability high；Due in this structure in addition to input and output connector, signal transmission form is all by micro-
Band wire forms, so having, impedance matching is good, assemble concordance advantages of higher, can be in relatively low microwave band
(below 18GHz) works and has wider relative working band；Can by the height of planar power distribution/synthesizer
Combine by advantages such as property and spatial power distribution/composite structure thermal diffusivity are good, meet power and distribute/synthesize skill
High request to many aspects such as high amplitude-phase consistency, high cooling efficiency and low-losses in art.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in this
Within bright protection domain.
Claims (4)
1. a prism-shaped multichannel power divider/synthesizer based on fan-shaped branch microstrip line, it is characterised in that
Overall one-tenth prism shape, including: power dispensing section and power combing section, power dispensing section and power combing section
For identical structure, electromagnetic wave is entered cavity by input coaxial connector, and the high-power signal of synthesis is by outfan
Coaxial connector output cavity；
Described power dispensing section, including power splitter, the electromagnetic wave decile that will input from input coaxial connector
Being two tunnels, each road signal respectively enters fan-shaped offset of microstrip sheet, and described fan-shaped offset of microstrip sheet is the merit of a multiport
Separation structure, distributes input signal constant amplitude homophase power；Each output port in described fan-shaped offset of microstrip sheet fan-shaped line
An impedance allotment hole it is each provided with at interval；
The edge of the described each branch road of power dispensing section carries out twice uniform chamfering to cavity, at chamfer plane
Attach micro strip, be connected by gold net between each joint micro strip；
The side of prism vertical direction is provided with amplifier chip, by the amplifier core on respective branch road
The signal power of distribution is amplified by sheet further, by twice chamfering structure symmetrical with power dispensing section,
Each road is amplified signal and is turned to the power combing knot of power combing section horizontal direction by prism vertical direction
Structure, by each tributary signal constant amplitude homophase power combing, the high-power signal of synthesis is by outfan coaxial connector
Output.
2. prism-shaped multichannel power distribution/synthesis based on fan-shaped branch microstrip line as claimed in claim 1
Device, it is characterised in that described twice chamfering is respectively level downward 30 degree and 60 degree of chamferings.
3. prism-shaped multichannel power distribution/synthesis based on fan-shaped branch microstrip line as claimed in claim 1
Device, it is characterised in that described power splitter is Wilkinson power divider.
4. prism-shaped multichannel power distribution/synthesis based on fan-shaped branch microstrip line as claimed in claim 1
Device, it is characterised in that described fan-shaped offset of microstrip sheet is the merit separation structure of five ports, by input signal one point
Four constant amplitude homophase power distribution.
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| Application Number | Priority Date | Filing Date | Title |
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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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| 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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| CN103985945A CN103985945A (en) | 2014-08-13 |
| CN103985945B true CN103985945B (en) | 2017-01-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4947143A (en) * | 1989-05-23 | 1990-08-07 | Massachusetts Institute Of Technology | Multiport power divider-combiner |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7532089B2 (en) * | 2006-06-06 | 2009-05-12 | Keragis Corporation | Microwave combiner/splitter |
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2014
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4947143A (en) * | 1989-05-23 | 1990-08-07 | Massachusetts Institute Of Technology | Multiport power divider-combiner |
| 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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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. |
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