CN109449555A - A kind of super wide band microstrip power splitter - Google Patents
A kind of super wide band microstrip power splitter Download PDFInfo
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- CN109449555A CN109449555A CN201811587393.5A CN201811587393A CN109449555A CN 109449555 A CN109449555 A CN 109449555A CN 201811587393 A CN201811587393 A CN 201811587393A CN 109449555 A CN109449555 A CN 109449555A
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- impedance converter
- power splitter
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- micro belt
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- 238000002955 isolation Methods 0.000 claims abstract description 13
- 238000005452 bending Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
Abstract
The invention discloses a kind of super wide band microstrip power splitters, including public input terminal, N number of output end and the first ~ the N+1 micro belt impedance converter, the first ~ the N micro belt impedance converter is sequentially connected with by M section quarter-wave micro-strip impedance line head and the tail and is constituted, N+1 micro belt impedance converter is sequentially connected with by P section quarter-wave micro-strip impedance line head and the tail and is constituted, one end of N+1 micro belt impedance converter connects public input terminal, the other end of N+1 micro belt impedance converter connects one end of the first ~ the N micro belt impedance converter simultaneously, the other end of the first ~ the N micro belt impedance converter connects one to one with N number of output end, the of the adjacent micro belt impedance converter of any two in the first ~ the N micro belt impedance converteriBridging has isolation resistance between section quarter-wave micro-strip impedance line, and N, M are the integer more than or equal to 2, and P is the integer more than or equal to 1,i=1,2 ..., M.The present invention can reduce production cost while guaranteeing electric property.
Description
Technical field
The present invention relates to a kind of power splitter more particularly to a kind of super wide band microstrip power splitters.
Background technique
Power splitter is a kind of device that input signal all the way is divided into two-way or the equal or unequal energy output of multichannel,
The synthesis of multiple signals energy can be exported all the way in turn, at this time referred to as combiner.The wherein more commonly used function for equal part
Divide device/combiner, i.e., the signal that each tributary port is assigned to is identical (including amplitude, phase etc.).Power splitter common at present
Waveguide power divider and microstrip power divider (Wilkinson power splitter) can be divided into.
For traditional microstrip power divider due to the limitation of various factors such as technique and volume, working band is relatively narrow, each branch
Between isolation it is poor.In practical application, in order to widen the bandwidth of operation of microstrip power divider, it usually needs increase power splitter
Order, accompanying problem is that the volume of power splitter increases, insertion loss becomes larger, and isolation resistance increases, and then causes into
This increase, application range are limited.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and to provide a kind of super wide band microstrip function point
Production cost can be effectively reduced while guaranteeing electric property in device.
The present invention specifically uses following technical scheme to solve above-mentioned technical problem:
A kind of super wide band microstrip power splitter, including public input terminal, N number of output end and the first ~ the N+1 micro-strip impedance transformation
Device, the first ~ the N micro belt impedance converter are sequentially connected with by M section quarter-wave micro-strip impedance line head and the tail and are constituted, N+1
Micro belt impedance converter is sequentially connected with by P section quarter-wave micro-strip impedance line head and the tail and is constituted, N+1 micro belt impedance converter
One end connect public input terminal, the other end of N+1 micro belt impedance converter connects the first ~ the N micro-strip impedance transformation simultaneously
One end of device, the other end and the N number of output end of the first ~ the N micro belt impedance converter connect one to one, the resistance of the first ~ the N micro-strip
The of the adjacent micro belt impedance converter of any two in resistance parallel operationiThere is bridging between section quarter-wave micro-strip impedance line
Isolation resistance, N, M are the integer more than or equal to 2, and P is the integer more than or equal to 1,i=1,2 ..., M.
Preferably, each section quarter-wave micro-strip impedance line in the first ~ the N+1 micro belt impedance converter is curved
The quarter-wave micro-strip impedance line of folding.
It is further preferred that the corner of the quarter-wave micro-strip impedance line of the bending is 45 degree of corner cut structures.
Preferably, the value of N is 2.
It is further preferred that the value that the working frequency of the power splitter is 500 ~ 3000MHz, M and P is 3.
Compared with prior art, technical solution of the present invention has the advantages that
The present invention is by replacing traditional two-way or more using the quarter-wave impedance transformation line of single channel in power splitter prime
Road branched structure, the application of isolation resistance can be effectively reduced in the case where meeting insulated degree requirement, to effectively reduce function
Divide the insertion loss of device, reduces volume, reduce cost.Further, since reducing the order of branched structure in power splitter, Ke Yi great
The big amplitude and phase consistency improved between power splitter branch.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of conventional microstrip power splitter；
Fig. 2 is the structural schematic diagram of microstrip power divider of the present invention；
Fig. 3 A ~ Fig. 3 D is test result of the conventional microstrip power splitter under four different frequencies shown in Fig. 1；
Fig. 4 A ~ Fig. 3 D is test result of the microstrip power divider of the present invention under four different frequencies shown in Fig. 2.
Specific embodiment
Increased for existing super wide band microstrip power splitter using volume brought by multistage branched structure, insertion loss becomes
Greatly, the problems such as isolation resistance increases, thinking of the invention are by being hindered in power splitter prime using the quarter-wave of single channel
Resistance thread-changing replaces traditional two-way or multi-path branch structure, to reduce isolation resistance in the case where meeting insulated degree requirement
Using to reduce the insertion loss of power splitter, reduction volume reduces cost.
Specifically, the invention adopts the following technical scheme:
A kind of super wide band microstrip power splitter, including public input terminal, N number of output end and the first ~ the N+1 micro-strip impedance transformation
Device, the first ~ the N micro belt impedance converter are sequentially connected with by M section quarter-wave micro-strip impedance line head and the tail and are constituted, N+1
Micro belt impedance converter is sequentially connected with by P section quarter-wave micro-strip impedance line head and the tail and is constituted, N+1 micro belt impedance converter
One end connect public input terminal, the other end of N+1 micro belt impedance converter connects the first ~ the N micro-strip impedance transformation simultaneously
One end of device, the other end and the N number of output end of the first ~ the N micro belt impedance converter connect one to one, the resistance of the first ~ the N micro-strip
The of the adjacent micro belt impedance converter of any two in resistance parallel operationiThere is bridging between section quarter-wave micro-strip impedance line
Isolation resistance, N, M are the integer more than or equal to 2, and P is the integer more than or equal to 1,i=1,2 ..., M.
The quarter-wave micro-strip impedance line of linear structure can be used in micro belt impedance converter in above-mentioned technical proposal,
The quarter-wave micro-strip impedance line of bending can also be used.From the point of view of reducing occupied space, it is preferable that the first ~ the N
Each section quarter-wave micro-strip impedance line in+1 micro belt impedance converter is the quarter-wave micro-strip resistance of bending
Anti- line.It, can be to the corner of the quarter-wave micro-strip impedance line of bending in order to reduce the discontinuity of microwave signal transmission
Corner cut processing is carried out, the angle of corner cut is preferably 45 degree, and the size of corner cut can be determined by simulation optimization, it is therefore preferred that institute
The corner for stating the quarter-wave micro-strip impedance line of bending is 45 degree of corner cut structures.
In above-mentioned technical proposal, the value of M and P can be equal, can not also wait；The value of N can be 2(power splitter at this time
As one-to-two power splitter), or 3,4.；Quarter-wave micro-strip impedance line in each micro belt impedance converter
The parameters such as length, the width of joint number and every quarter-wave micro-strip impedance line can be according to the electrical ginseng of designed power splitter
Number is calculated, or directly is emulated to obtain by the radio frequency simulations software such as ADS.
For convenient for public understanding, below by a specific embodiment and in conjunction with attached drawing come to technical solution of the present invention into
Row is further described:
The power splitter of the present embodiment is that one-to-two etc. divides power splitter, and working frequency is 500 ~ 3000MHz.Fig. 1 shows use
The power divider structure of conventional method design, as shown in Figure 1, two symmetrical branches are initially formed from the public input terminal in left side,
It is separately connected two output ends of the rightmost side；Every branch is all the quarter-wave micro-strip impedance line head and the tail by the bending of six sections
It is sequentially connected with the micro belt impedance converter of composition, is distinguished between the corresponding each section quarter-wave micro-strip impedance line of two branches
Bridging has isolation resistance R1 ~ R6, and the corner of every section quarter-wave micro-strip impedance line is all made of 45 degree of corner cut structures.
Public input terminal and output end usually equally use microstrip line construction, generally 50 ohm microstrips.As shown in Figure 1, final optimization pass
The size for the power splitter designed afterwards is 68mm × 34mm.
Fig. 2 shows power divider structure of the invention.As shown in Fig. 2, the power splitter is not from the public input terminal in left side
Start carry out branch, but connect a micro belt impedance converter one end, the micro belt impedance converter bent by three sections four
/ mono- wave microstrip impedance line head and the tail are sequentially connected with composition, and the other end of the micro belt impedance converter is micro- with other two simultaneously
One end connection with impedance transformer, in addition the two micro belt impedance converters are all micro- by the quarter-wave of three sections bending
Three constituted rank impedance transformers are sequentially connected with impedance line head and the tail, corresponding four points of each section of the two three rank impedance transformers
One of bridging has isolation resistance R1 ~ R6, and every section quarter-wave micro-strip impedance line respectively between wave microstrip impedance line
Corner be all made of 45 degree of corner cut structures；The other end of the two three rank impedance transformers is exported with two of power splitter respectively
End connection.Public input terminal and output end usually equally use microstrip line construction, generally 50 ohm microstrips.As shown in Fig. 2, most
The size for the power splitter designed after optimization eventually is 59.5mm × 34mm.
Can be seen that power splitter of the present invention from the scheme comparison of Fig. 1, Fig. 2 only needs 3 isolation resistances that tradition can be realized
The working frequency and insulated degree requirement that 6 isolation resistances of power splitter are just able to achieve, and finished-product volume and required material are big
Width reduces, and producting process difficulty also reduces, to can effectively reduce production cost；Conversely, in same space restrictive condition
Under, broader working band can be realized using the present invention program, and be reduced to 3 ranks since two branch route 6 traditional ranks, it can be with
Greatly improve the amplitude and phase consistency between two branch of power splitter.
The power splitter of Fig. 2 can also actually increase or reduce the joint number of the micro belt impedance converter in left side, two branches
The joint number of upper micro belt impedance converter is accordingly decreased or increased, those skilled in the art can according to actual needs to concrete scheme into
Row is adjusted flexibly.
Fig. 3 A ~ Fig. 3 D is test result of the conventional microstrip power splitter under four different frequencies shown in Fig. 1；Fig. 4 A ~ Fig. 3 D
For test result of the microstrip power divider of the present invention under four different frequencies shown in Fig. 2.It can be seen that this hair from Fig. 3 A ~ Fig. 4 D
Bright microstrip power divider has superior electric property.
It is only illustrated so that one-to-two etc. divides power splitter as an example above, for one-to-two not equal part power splitter and one point
For more multichannel equal part or non-equal part power splitter, the present invention program is can be used equally to realize and reduce function point in those skilled in the art
The insertion loss of device reduces volume, reduces cost, and improve the mesh of the amplitude and phase consistency between power splitter branch
's.For the sake of saving space, details are not described herein again.
Claims (5)
1. a kind of super wide band microstrip power splitter, which is characterized in that including public input terminal, N number of output end and the first ~ the N+1
Micro belt impedance converter, the first ~ the N micro belt impedance converter are sequentially connected by M section quarter-wave micro-strip impedance line head and the tail
Composition is connect, N+1 micro belt impedance converter is sequentially connected with by P section quarter-wave micro-strip impedance line head and the tail and is constituted, and N+1 is micro-
One end with impedance transformer connects public input terminal, and the other end of N+1 micro belt impedance converter connects the first ~ the N simultaneously
One end of micro belt impedance converter, the other end and the N number of output end of the first ~ the N micro belt impedance converter connect one to one, the
The of the adjacent micro belt impedance converter of any two in one ~ the N micro belt impedance converteriSave quarter-wave micro-strip impedance line
Between bridging have an isolation resistance, N, M are the integer more than or equal to 2, and P is the integer more than or equal to 1,i=1,2 ..., M.
2. super wide band microstrip power splitter as described in claim 1, which is characterized in that in the first ~ the N+1 micro belt impedance converter
Each section quarter-wave micro-strip impedance line is the quarter-wave micro-strip impedance line of bending.
3. super wide band microstrip power splitter as claimed in claim 2, which is characterized in that the quarter-wave micro-strip of the bending hinders
The corner of anti-line is 45 degree of corner cut structures.
4. super wide band microstrip power splitter as described in claim 1, which is characterized in that the value of N is 2.
5. super wide band microstrip power splitter as claimed in claim 4, which is characterized in that the working frequency of the power splitter be 500 ~
The value of 3000MHz, M and P are 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811587393.5A CN109449555A (en) | 2018-12-25 | 2018-12-25 | A kind of super wide band microstrip power splitter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811587393.5A CN109449555A (en) | 2018-12-25 | 2018-12-25 | A kind of super wide band microstrip power splitter |
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| CN109449555A true CN109449555A (en) | 2019-03-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854497A (en) * | 2019-10-21 | 2020-02-28 | 武汉滨湖电子有限责任公司 | P, L dual-waveband ultra-wideband air stripline power distribution network |
| WO2021103149A1 (en) * | 2019-11-27 | 2021-06-03 | 瑞声声学科技(深圳)有限公司 | Equal power division network and circuit board |
| CN114421114A (en) * | 2022-01-19 | 2022-04-29 | 郝艺益 | 75-ohm one-to-two power divider |
| CN115173014A (en) * | 2022-06-16 | 2022-10-11 | 郝艺益 | Broadband and hybrid one-to-four power divider |
Citations (4)
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| CN201508897U (en) * | 2009-09-17 | 2010-06-16 | 吴鹏 | Improved Wilkinson power divider |
| CN108346845A (en) * | 2018-02-08 | 2018-07-31 | 中国电子科技集团公司第三十八研究所 | A kind of ultra-wideband high power miniaturization power splitter |
| CN108493551A (en) * | 2018-02-07 | 2018-09-04 | 中国科学院微电子研究所 | A kind of IPD ultrabroad bands power splitter |
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2018
- 2018-12-25 CN CN201811587393.5A patent/CN109449555A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| CN201508897U (en) * | 2009-09-17 | 2010-06-16 | 吴鹏 | Improved Wilkinson power divider |
| CN108493551A (en) * | 2018-02-07 | 2018-09-04 | 中国科学院微电子研究所 | A kind of IPD ultrabroad bands power splitter |
| CN108346845A (en) * | 2018-02-08 | 2018-07-31 | 中国电子科技集团公司第三十八研究所 | A kind of ultra-wideband high power miniaturization power splitter |
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Non-Patent Citations (1)
| Title |
|---|
| 郑强林等: "Wilkinson型功率分配器设计", 《微波学报》, pages 237 - 240 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854497A (en) * | 2019-10-21 | 2020-02-28 | 武汉滨湖电子有限责任公司 | P, L dual-waveband ultra-wideband air stripline power distribution network |
| WO2021103149A1 (en) * | 2019-11-27 | 2021-06-03 | 瑞声声学科技(深圳)有限公司 | Equal power division network and circuit board |
| CN114421114A (en) * | 2022-01-19 | 2022-04-29 | 郝艺益 | 75-ohm one-to-two power divider |
| CN114421114B (en) * | 2022-01-19 | 2023-08-18 | 郝艺益 | 75 ohm one-to-two power divider |
| CN115173014A (en) * | 2022-06-16 | 2022-10-11 | 郝艺益 | Broadband and hybrid one-to-four power divider |
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