CN209200126U - 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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- CN209200126U CN209200126U CN201822181283.0U CN201822181283U CN209200126U CN 209200126 U CN209200126 U CN 209200126U CN 201822181283 U CN201822181283 U CN 201822181283U CN 209200126 U CN209200126 U CN 209200126U
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Abstract
The utility model 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 utility model can reduce production cost while guaranteeing electric property.
Description
Technical field
The utility model 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.
Utility model content
The technical problem to be solved by the utility model is to overcome the shortage of prior art, a kind of super wide band microstrip function is provided
Divide device, production cost can be effectively reduced while guaranteeing electric property.
The utility model 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
Converter, 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-strip impedance
One end of converter connects public input terminal, and the other end of N+1 micro belt impedance converter connects the resistance of the first~the N micro-strip simultaneously
One end of resistance parallel operation, the other end and the N number of output end of the first~the N micro belt impedance converter connect one to one, first~
In N micro belt impedance converter the i-th section quarter-wave micro-strip impedance line of the adjacent micro belt impedance converter of any two it
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.
Preferably, each section quarter-wave micro-strip impedance line in the first~the N+1 micro belt impedance converter is
The quarter-wave micro-strip impedance line of bending.
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 solutions of the utility model have the advantages that
The utility model is traditional by using the quarter-wave impedance transformation line of single channel to replace in power splitter prime
Two-way or multi-path branch structure can effectively reduce the application of isolation resistance in the case where meeting insulated degree requirement, thus effectively
Reduction power splitter insertion loss, reduce volume, reduce cost.Further, since reducing the rank of branched structure in power splitter
Number, can greatly improve the amplitude and phase consistency 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 the utility model microstrip power divider；
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. 4 D is test result of the utility model microstrip power divider 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, the thinking of the utility model are the quarter-waves by using single channel in power splitter prime
Long impedance transformation line replaces traditional two-way or multi-path branch structure, to reduce isolation electricity in the case where meeting insulated degree requirement
The application of resistance reduces volume, reduces cost to reduce the insertion loss of power splitter.
Specifically, the utility model uses 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
Converter, 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-strip impedance
One end of converter connects public input terminal, and the other end of N+1 micro belt impedance converter connects the resistance of the first~the N micro-strip simultaneously
One end of resistance parallel operation, the other end and the N number of output end of the first~the N micro belt impedance converter connect one to one, first~
In N micro belt impedance converter the i-th section quarter-wave micro-strip impedance line of the adjacent micro belt impedance converter of any two it
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.
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
Each section quarter-wave micro-strip impedance line in N+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 splitters at this time
As one-to-two power splitter), or 3,4 ...；Quarter-wave micro-strip impedance line in each micro belt impedance converter
Joint number and the parameters such as length, width of every quarter-wave micro-strip impedance line can be according to the electrical of designed power splitter
Parameter is calculated, or directly is emulated to obtain by the radio frequency simulations software such as ADS.
Below by a specific embodiment and to carry out the technical side to the utility model in conjunction with attached drawing convenient for public understanding
Case is further elaborated:
The power splitter of the present embodiment is that one-to-two etc. divides power splitter, and working frequency is 500~3000MHz.Fig. 1 is shown
The power divider structure designed using conventional method, as shown in Figure 1, initially forming two symmetrical branch from the public input terminal in left side
Road is separately connected two output ends of the rightmost side；Every branch is all the quarter-wave micro-strip impedance line bent by six sections
Head and the tail are sequentially connected with the micro belt impedance converter of composition, between the corresponding each section quarter-wave micro-strip impedance line of two branches
Bridging has isolation resistance R1~R6 respectively, and the corner of every section quarter-wave micro-strip impedance line is all made of 45 degree of corner cuts
Structure.Public input terminal and output end usually equally use microstrip line construction, generally 50 ohm microstrips.As shown in Figure 1, final
The size for the power splitter designed after optimization is 68mm × 34mm.
Fig. 2 shows the power divider structure of the utility model.As shown in Fig. 2, the power splitter is not from the public defeated of left side
Enter end to start to carry out branch, but connect one end of a micro belt impedance converter, which is bent by three sections
Quarter-wave micro-strip impedance line head and the tail be sequentially connected with compositions, the other end of the micro belt impedance converter while with other two
One end of a micro belt impedance converter connects, and in addition the two micro belt impedance converters are all the quarter-waves bent by three sections
Long micro-strip impedance line head and the tail are sequentially connected with three constituted rank impedance transformers, the two corresponding each sections of three rank impedance transformers
Bridging has isolation resistance R1~R6 respectively between quarter-wave micro-strip impedance line, and every section quarter-wave micro-strip hinders
The corner of anti-line is all made of 45 degree of corner cut structures；The other end of the two three rank impedance transformers two with power splitter respectively
Output end connection.Public input terminal and output end usually equally use microstrip line construction, generally 50 ohm microstrips.Such as Fig. 2 institute
Show, the size for the power splitter designed after final optimization pass is 59.5mm × 34mm.
Can be seen that the utility model power splitter from the scheme comparison of Fig. 1, Fig. 2 only needs 3 isolation resistances can be realized
The working frequency and insulated degree requirement that 6 isolation resistances of traditional power splitter are just able to achieve, and finished-product volume and required material
Substantially reduce, producting process difficulty also reduces, to can effectively reduce production cost；Conversely, being limited in same space
Under the conditions of, broader working band can be realized using the utility model, and be reduced to since two branch route 6 traditional ranks
3 ranks can 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~figure
4D is test result of the utility model microstrip power divider under four different frequencies shown in Fig. 2.It can from Fig. 3 A~Fig. 4 D
Out, the utility model 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 utility model is can be used equally to realize and reduce in those skilled in the art
The insertion loss of power splitter reduces volume, reduces the amplitude and phase consistency between cost, and raising power splitter branch
Purpose.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.
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| CN201822181283.0U CN209200126U (en) | 2018-12-25 | 2018-12-25 | A kind of super wide band microstrip power splitter |
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| CN201822181283.0U CN209200126U (en) | 2018-12-25 | 2018-12-25 | A kind of super wide band microstrip power splitter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449555A (en) * | 2018-12-25 | 2019-03-08 | 江苏贝孚德通讯科技股份有限公司 | A kind of super wide band microstrip power splitter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449555A (en) * | 2018-12-25 | 2019-03-08 | 江苏贝孚德通讯科技股份有限公司 | A kind of super wide band microstrip power splitter |
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