CN204720533U - A kind of miniature broadband cavity power divider - Google Patents
A kind of miniature broadband cavity power divider Download PDFInfo
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- CN204720533U CN204720533U CN201520392720.7U CN201520392720U CN204720533U CN 204720533 U CN204720533 U CN 204720533U CN 201520392720 U CN201520392720 U CN 201520392720U CN 204720533 U CN204720533 U CN 204720533U
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- power divider
- impedance converter
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- wavelength
- impedance
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- 238000013461 design Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a kind of miniature broadband cavity power divider, include multistage impedance converter, the length that multistage impedance converter often saves is less than 1/4 of centre frequency guiding wavelength, and the diameter of multistage impedance converter is thickness is arranged alternately.Miniature broadband power divider entire length of the present utility model is far smaller than same specification 1/4 wavelength power splitter, thus reduces production cost, and overall construction design is reasonable, and result of use is good.
Description
Technical field
The utility model relates to miniature broadband power divider field.
Background technology
Along with the development of short-wave communication tedhnology, the passive device demand of people to high power, broadband increases day by day, and wherein high performance microwave power divider is widely applicable due to it, and demand is more urgent.Power divider (hereinafter referred to as power splitter) is in microwave system, and its effect Shi Jiang mono-road microwave power is divided into multiple-channel output by a certain percentage, general based on microstrip power divider and coaxial cavity power divider from transmission line.In order to realize the application in broadband or ultra-wideband communications, power splitter occurs mainly with multistage impedance mapping mode.The width wherein adopting the power splitter of Filled Dielectrics the most carefully to locate conduction band when progression is more as microstrip structure etc. has been near or below can process live width, and processing not easily; Conduction band thickness is at about 0.03mm, and the dielectric constant of medium is 2.5 ~ 4.3, and inserting it into loss increases along with frequency and increase sharply, and is generally not suitable for high-power low-loss occasion.Coaxial line power splitter can bear large power, and current method for designing is all that employing 1/4 wavelength realizes, and the length of power splitter is very long, causes high cost.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of miniature broadband cavity power divider, relative with same size 1/4 wavelength power splitter, its contraction in length, thus reduces production cost, and is convenient to install flexibly and use.
The technical solution of the utility model is:
A kind of miniature broadband cavity power divider, includes multistage impedance converter, and the length that described multistage impedance converter often saves is less than 1/4 of centre frequency guiding wavelength, and the diameter of multistage impedance converter is thickness is arranged alternately.
The length that described multistage impedance converter often saves is less than 1/4 of centre frequency guiding wavelength and is greater than 1/16 of centre frequency guiding wavelength.
Design principle of the present utility model:
From filter low pass prototype circuit, wherein g
0=R'
0for a certain port Impedance of impedance transformer, order for sending-end impedance; g
n+1=R'
1for the impedance of the impedance transformer other end, order herein be output impedance; g
2k+1for shunt capacitor capacitance, g
2kfor series inductance inductance value.Due in microwave transmission line, length is less than the line characteristic impedance Z of 1/4 of guiding wavelength
01lower than specified impedance as Z
0=50 Ω, can regard as shunt capacitance, characteristic impedance Z
01less, the electric capacity of the low characteristic impedance transmission line section equivalence that length is constant is larger; Accordingly, length is less than the line characteristic impedance Z of 1/4 of guiding wavelength
02higher than specified impedance as Z
0=50 Ω, can regard as series inductance, characteristic impedance Z
01less, the inductance of the high characteristic impedance transmission line section equivalence that length is constant is larger; For coaxial line, in the constant situation of external diameter, characteristic impedance is lower, and internal diameter is thicker, and characteristic impedance is higher, and internal diameter is thinner, forms the structure that thickness replaces thus.
For different impedance transformation ratio R=R'
0/ R'
1, selected different joint number as requested, can realize the impedance transformer of the fluctuating of different ripple and standing-wave ratio.Adopt the impedance transformer of this kind of structure, in identical index situation, significantly can shorten overall length, but shortening effect depends on high characteristic impedance Z
02with low characteristic impedance Z
01ratio, ratio is larger, and length is shorter, and ratio is less, and length is longer.
Advantage of the present utility model:
Miniature broadband power divider entire length of the present utility model is far smaller than same specification 1/4 wavelength power splitter, thus reduces production cost, and overall construction design is reasonable, and result of use is good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of existing 1/4 wavelength power splitter.
Embodiment
See Fig. 1, a kind of miniature broadband cavity power divider, include multistage impedance converter 1, the length that multistage impedance converter 1 often saves is less than 1/4 of centre frequency guiding wavelength and is greater than 1/16 of centre frequency guiding wavelength, and the diameter of multistage impedance converter 1 is thickness is arranged alternately.
See Fig. 1 and Fig. 2, the present invention is compared with the multistage stepped impedance transformer 2 of same specification 1/4 wavelength power splitter, and length shortens greatly.
Claims (2)
1. a miniature broadband cavity power divider, includes multistage impedance converter, it is characterized in that: the length that described multistage impedance converter often saves is less than 1/4 of centre frequency guiding wavelength, and the diameter of multistage impedance converter is thickness is arranged alternately.
2. a kind of miniature broadband cavity power divider according to claim 1, is characterized in that: the length that described multistage impedance converter often saves is less than 1/4 of centre frequency guiding wavelength and is greater than 1/16 of centre frequency guiding wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520392720.7U CN204720533U (en) | 2015-06-08 | 2015-06-08 | A kind of miniature broadband cavity power divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520392720.7U CN204720533U (en) | 2015-06-08 | 2015-06-08 | A kind of miniature broadband cavity power divider |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204720533U true CN204720533U (en) | 2015-10-21 |
Family
ID=54319506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520392720.7U Expired - Fee Related CN204720533U (en) | 2015-06-08 | 2015-06-08 | A kind of miniature broadband cavity power divider |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204720533U (en) |
-
2015
- 2015-06-08 CN CN201520392720.7U patent/CN204720533U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 |