CN208655866U - A kind of subminaturization Wilkinson power divider - Google Patents
A kind of subminaturization Wilkinson power divider Download PDFInfo
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- CN208655866U CN208655866U CN201821197642.5U CN201821197642U CN208655866U CN 208655866 U CN208655866 U CN 208655866U CN 201821197642 U CN201821197642 U CN 201821197642U CN 208655866 U CN208655866 U CN 208655866U
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Abstract
A kind of subminaturization Wilkinson power divider, comprising: dielectric-slab, microstrip line, mixed transport line, isolation resistance and isolation capacitance；Microstrip line includes input microstrip line, the first output microstrip line, the second output microstrip line；Mixed transport line includes the first mixed transport line, the second mixed transport line；One end of first mixed transport line is connected with input microstrip line, and the other end of the first mixed transport line is connected with the first output microstrip line；One end of second mixed transport line is connected with input microstrip line, and the other end of the second mixed transport line is connected with the second output microstrip line；One end of isolation resistance is connected with the second output microstrip line, and the other end of isolation resistance is connected with one end of isolation capacitance, and the other end of isolation capacitance is connected with the first output microstrip line.The utility model uses the novel mixing transmission line structure of one kind instead of the microstrip line of traditional 90 ° of electrical length.Total electrical length of the mixed transport line is only 9 °, and the size of power splitter is greatly reduced.
Description
Technical field
The utility model relates to power splitter field more particularly to a kind of subminaturization Wilkinson power dividers.
Background technique
Wilkinson power divider is microwave receiving, indispensable passive device in emission system, either microwave communication,
In radar, remote control remote sensing, electronic reconnaissance, electronic countermeasure or microwave measurement system, there is the demand to the distribution of signal constant power.
Wilkinson power divider is widely used in microwave power amplifier, frequency mixer, day because its structure is simple and production easy to process
In the feeding network of linear array, Doherty amplifier and other microwave systems.However traditional Wilkinson power divider is by two
The transmission line that road electrical length is 90 ° is constituted, this causes traditional Wilkinson power divider to occupy very big circuit area, especially
It is in the lower frequency range of frequency.Therefore it is required in more harsh application to circuit size, such as handheld device, airborne
The application of equipment etc., Wilkinson power divider is significantly limited.This becomes the design method for finding miniaturization power splitter very
It is necessary.
The miniaturization for realizing power splitter there are many kinds of method at present, can specifically be divided into several major class: a quarter
The capacitive of wavelength transmission line loads, and this method reduces the size of power splitter relative to traditional Wilkinson power divider
26%；π type coupling microstrip cable architecture, this method reduce the size of power splitter relative to traditional Wilkinson power divider
37%；Composite left-and-right-hand transmission line structure, this method reduce the size of power splitter relative to traditional Wilkinson power divider
26%；Height impedance resonance structure, this method reduce the size of power splitter relative to traditional Wilkinson power divider
36.5%.
Although the above several method to a certain extent reduces the size of Wilkinson power divider, for
For the lower VHF frequency range of frequency, the ratio of size reduction is not enough.So it is also desirable to find a kind of more effective way with reality
The miniaturization of existing Wilkinson power divider.
Utility model content
The purpose of the utility model is to overcome prior art defects, provide a kind of subminaturization Wilkinson power divider,
Traditional transmission line is replaced using a kind of novel mixed transport line, the size of power splitter is greatly reduced.
In order to achieve the above object, the utility model is implemented with the following technical solutions:
A kind of subminaturization Wilkinson power divider, comprising: dielectric-slab, microstrip line, mixed transport line, isolation resistance and every
From capacitor；The microstrip line includes input microstrip line, the first output microstrip line, the second output microstrip line；The mixed transport line
Including the first mixed transport line, the second mixed transport line；One end of the first mixed transport line is connected with input microstrip line, institute
The other end for stating the first mixed transport line is connected with the first output microstrip line；One end of the second mixed transport line and input are micro-
Band line is connected, and the other end of the second mixed transport line is connected with the second output microstrip line；One end of the isolation resistance with
Second output microstrip line be connected, the other end of the isolation resistance is connected with one end of isolation capacitance, the isolation capacitance it is another
One end is connected with the first output microstrip line.
The first mixed transport line includes the first series connection microstrip line, the first in parallel microstrip line, the second series connection microstrip line, the
Two parallel connection microstrip lines, third series connection microstrip line, the 4th series connection microstrip line, first capacitor, the second capacitor, the first inductance are constituted；
First series connection microstrip line, the second series connection microstrip line, the first inductance, third series connection microstrip line, the 4th series connection microstrip line
It is sequentially connected in series and connects；First microstrip line in parallel is parallel to the joint of the first series connection microstrip line and the second series connection microstrip line, and first
Capacitance connection is in the end of the first microstrip line in parallel；Second microstrip line in parallel is parallel to the second series connection microstrip line and the first inductance
Joint, the second capacitance connection is in the end of the second microstrip line in parallel.
The second mixed transport line includes the 5th series connection microstrip line, third parallel connection microstrip line, the 6th series connection microstrip line, the
Four parallel connection microstrip lines, the 7th series connection microstrip line, the 8th series connection microstrip line, third capacitor, the 4th capacitor, the second inductance are constituted；
5th series connection microstrip line, the 6th series connection microstrip line, the second inductance, the 7th series connection microstrip line, the 8th series connection microstrip line
It is sequentially connected in series and connects；Third parallel connection microstrip line is parallel to the joint of the 5th series connection microstrip line and the 6th series connection microstrip line, third
Capacitance connection is in the end of third parallel connection microstrip line；4th microstrip line in parallel is parallel to the 6th series connection microstrip line and the second inductance
Joint, the 4th capacitance connection is in the end of the 4th microstrip line in parallel.
The Wilkinson power divider is to halve power splitter；In first mixed transport line and the second mixed transport line, phase
Corresponding microstrip line electrical length is equal, and characteristic impedance is identical；Corresponding capacitor's capacity is equal, corresponding inductance inductance value phase
Deng；And two-way mixed transport line is full symmetric, connection type is also identical.
The microstrip line is 50 Ω microstrip lines.
Compared with prior art, the utility model has the beneficial effects that
A kind of subminaturization Wilkinson power divider of the utility model uses compared with traditional Wilkinson power divider
New structural mixed transport line.Total electrical length of the mixed transport line is only 9 °, much smaller than traditional 90 °, the microminiature
Change the occupied circuit area of Wilkinson power divider is only traditional Wilkinson power divider area 10%, and meets function point
The performance indexes of device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of subminaturization Wilkinson power divider in the utility model embodiment 1.
Fig. 2 is the S of subminaturization Wilkinson power divider in the utility model embodiment 111Simulation result diagram.
Fig. 3 is the S of subminaturization Wilkinson power divider in the utility model embodiment 121、S31Simulation result diagram.
Fig. 4 is the S of subminaturization Wilkinson power divider in the utility model embodiment 122、S33Simulation result diagram.
Fig. 5 is the S of subminaturization Wilkinson power divider in the utility model embodiment 123Simulation result diagram.
In figure: 1- dielectric-slab, 2- microstrip line, 21- input microstrip line, the output of 22- first microstrip line, 23- second export micro-
Band line, 3- mixed transport line, the first mixed transport of 31- line, 311- first connect microstrip line, 312- first microstrip line in parallel,
313- second connect microstrip line, 314- second microstrip line in parallel, 315- third series connection microstrip line, 316- the 4th connect microstrip line,
317- first capacitor, the second capacitor of 318-, the first inductance of 319-, the second mixed transport of 32- line, 321- the 5th connect microstrip line,
322- third parallel connection microstrip line, 323- the 6th connect microstrip line, 324- the 4th microstrip line in parallel, 325- the 7th connect microstrip line,
The series connection of 326- the 8th microstrip line, 327- third capacitor, the 4th capacitor of 328-, the second inductance of 329-, 4- isolation resistance, 5- isolation electricity
Hold.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing:
See Fig. 1, a kind of subminaturization Wilkinson power divider, comprising: dielectric-slab 1, microstrip line 2, mixed transport line 3, every
From resistance 4 and isolation capacitance 5；The microstrip line 2 includes that input microstrip line 21, first exports the output micro-strip of microstrip line 22, second
Line 23；The mixed transport line 3 includes the first mixed transport line 31, the second mixed transport line 32；The first mixed transport line
31 one end is connected with input microstrip line 21, the other end of the first mixed transport line 31 and the first output 22 phase of microstrip line
Even；One end of the second mixed transport line 32 is connected with input microstrip line 21, the other end of the second mixed transport line 32
It is connected with the second output microstrip line 23；One end of the isolation resistance 4 is connected with the second output microstrip line 23, the isolation resistance
4 other end is connected with one end of isolation capacitance 5, and the other end of the isolation capacitance 5 is connected with the first output microstrip line 22.
The first mixed transport line 31 includes that first the 311, first microstrip line 312, second in parallel of series connection microstrip line is connected
The microstrip line 314 in parallel of microstrip line 313, second, the third series connection series connection microstrip line 316 of microstrip line the 315, the 4th, first capacitor 317,
Second capacitor 318, the first inductance 319；
First series connection microstrip line 311, second is connected microstrip line 313, the first inductance 319, third series connection microstrip line 315, the
Four series connection microstrip lines 316, which are sequentially connected in series, to connect；First microstrip line 312 in parallel is parallel to the first series connection microstrip line 311 and the second string
Join the joint of microstrip line 313, first capacitor 317 is connected to the end of the first microstrip line 312 in parallel；Second microstrip line in parallel
314 are parallel to the joint of the second series connection microstrip line 313 and the first inductance 319, and the second capacitor 318 is connected to the second micro-strip in parallel
The end of line 314.
The second mixed transport line 32 includes the 5th series connection microstrip line 321, the series connection of third parallel connection microstrip line the 322, the 6th
The microstrip line the 324, the 7th in parallel of microstrip line the 323, the 4th connect microstrip line the 325, the 8th connect microstrip line 326, third capacitor 327,
4th capacitor 328, the second inductance 329；
5th series connection microstrip line 321, the 6th series connection microstrip line 323, the second inductance 329, the 7th series connection microstrip line 325, the
Eight series connection microstrip lines 326, which are sequentially connected in series, to connect；Third parallel connection microstrip line 322 is parallel to the 5th series connection microstrip line 321 and the 6th string
Join the joint of microstrip line 323, third capacitor 327 is connected to the end of third parallel connection microstrip line 322；4th microstrip line in parallel
324 are parallel to the joint of the 6th series connection microstrip line 323 and the second inductance 329, and the 4th capacitor 328 is connected to the 4th micro-strip in parallel
The end of line 324.
The Wilkinson power divider is to halve power splitter；First mixed transport line 31 and the second mixed transport line 32
In, corresponding microstrip line electrical length is equal, and characteristic impedance is identical；Corresponding capacitor's capacity is equal, corresponding inductance sense
It is worth equal；And two-way mixed transport line is full symmetric, connection type is also identical.Specifically, the first series connection microstrip line 311 and the 5th
The characteristic impedance of series connection microstrip line 321 is identical, and electrical length is identical；First microstrip line 312 in parallel microstrip line 322 in parallel with third
Characteristic impedance is identical, and electrical length is identical；Second series connection microstrip line 313 is identical as the 6th series connection characteristic impedance of microstrip line 323, electricity
Length is identical；Second microstrip line 314 in parallel is identical as the 4th characteristic impedance of microstrip line 324 in parallel, and electrical length is identical；Third string
It is identical as the 7th series connection characteristic impedance of microstrip line 325 to join microstrip line 315, electrical length is identical；4th series connection microstrip line 316 and the
The characteristic impedance of eight series connection microstrip lines 326 is identical, and electrical length is identical；The capacitance phase of first capacitor 317 and third capacitor 327
Deng the second capacitor 318 is equal with the capacitance of the 4th capacitor 328, and the first inductance 319 is equal with the inductance value of the second inductance 329.
The microstrip line 2 is 50 Ω microstrip lines.
Following embodiment is implemented under premised on technical solutions of the utility model, gives detailed embodiment
With specific operating process, but the protection scope of the utility model is not limited to the following embodiments.Side used in following embodiments
Method is conventional method unless otherwise instructed.
Embodiment 1:
According to impedance shift theory, the electrical length and characteristic impedance of each microstrip line in mixed transport line can be extrapolated,
And then the length and width of each microstrip line can be calculated.The value of each capacitor, inductance can also be extrapolated.And it can be by
ADS simulation software carries out Computer Aided Design.
In the present embodiment, the microstrip line characteristic impedance of input port, the first output port, second output terminal mouth is 50
Ω；In one embodiment, dielectric-slab 1 is polytetrafluoroethylene (PTFE), dielectric constant 4.4, with a thickness of 1.6mm.
In the present embodiment, the first series connection microstrip line 311 is arc, radius 13.7mm, width 0.64mm, circle
Heart angle is 49.7 °.First microstrip line 312 in parallel is rectangle, and the length is 3.81mm, width 1.35mm.Second series connection is micro-
It is arc with line 313, radius 13.7mm, width 0.64mm, central angle is 47.3 °.Second microstrip line 314 in parallel is
Rectangle, the length is 1.93mm, width 0.86mm.Third series connection microstrip line 315 is arc, radius 13.7mm,
Width is 0.64mm, and central angle is 71 °.4th series connection microstrip line 316 is rectangle, and the length is 2.8mm, width is
0.64mm.The capacitance of first capacitor 317 is 5pF, and the capacitance of the second capacitor 318 is 7pF, and the inductance value of the first inductance 319 is 72nH.
In the present embodiment, the dimension data of each section of microstrip line in the second mixed transport line 32, the capacitance of capacitor, inductance
Inductance value it is corresponding identical with the first mixed transport line 31.
In the present embodiment, the resistance value of isolation resistance 4 is 62 ohm, and the capacitance of isolation capacitance 5 is 33pF.
It referring to fig. 2, is the return loss (S of the present embodiment input port11) simulation result diagram.Abscissa indicates frequency, single
Position is MHz, and ordinate indicates amplitude, and unit is decibel.As can be seen from Figure 2, in the bandwidth of 84-111MHz, return loss
Greater than 20dB, illustrate that the matching of input port is good.
It is the insertion loss (S of the present embodiment output port referring to Fig. 321、S31) simulation result diagram.Abscissa indicates frequency
Rate, unit MHz, ordinate indicate amplitude, and unit is decibel.As can be seen from Figure 3, in the bandwidth of 80-112MHz, the
The insertion loss of one output port and second output terminal mouth is respectively less than 3.1dB.
It referring to fig. 4, is the return loss (S of the first output port of the present embodiment and second output terminal mouth22、S33) emulation knot
Fruit figure.Abscissa indicates frequency, unit MHz, and ordinate indicates amplitude, and unit is decibel.Figure 4, it can be seen that 78-
In the bandwidth of 121MHz, the return loss of the first output port and second output terminal mouth is all larger than 20dB, illustrates two output ends
Mouth matching is good.
It is the present embodiment output port isolation (S referring to Fig. 523) simulation result diagram, abscissa indicate frequency, unit
For MHz, ordinate indicates amplitude, and unit is decibel.In the bandwidth of 79-120MHz, the first output port and second output terminal
Isolation between mouthful is greater than 20dB.Illustrate two output port interference very littles.
To sum up, the utility model provides a kind of novel subminaturization Wilkinson power divider.Using new structure
Mixed transport line.The total electrical length of the mixed transport line is only 9 °, and much smaller than traditional 90 °, power splitter is greatly reduced
Size.The occupied circuit area of subminaturization Wilkinson power divider of the utility model is only traditional Wilkinson power divider
The 10% of area.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by described
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies, should be equivalent substitute mode combination, is included within the protection scope of the utility model.
Claims (5)
1. a kind of subminaturization Wilkinson power divider characterized by comprising dielectric-slab (1), microstrip line (2), mixed transport
Line (3), isolation resistance (4) and isolation capacitance (5)；The microstrip line (2) includes input microstrip line (21), the first output microstrip line
(22), the second output microstrip line (23)；The mixed transport line (3) includes the first mixed transport line (31), the second mixed transport
Line (32)；One end of the first mixed transport line (31) is connected with input microstrip line (21), the first mixed transport line
(31) the other end is connected with the first output microstrip line (22)；One end of the second mixed transport line (32) and input microstrip line
(21) it is connected, the other end of the second mixed transport line (32) is connected with the second output microstrip line (23)；The isolation resistance
(4) one end is connected with the second output microstrip line (23), the other end of the isolation resistance (4) and the one end of isolation capacitance (5)
It is connected, the other end of the isolation capacitance (5) is connected with the first output microstrip line (22).
2. a kind of subminaturization Wilkinson power divider according to claim 1, which is characterized in that first mixing passes
Defeated line (31) includes the first series connection microstrip line (311), the first parallel connection microstrip line (312), the second series connection microstrip line (313), second
Microstrip line (314) in parallel, third series connection microstrip line (315), the 4th series connection microstrip line (316), first capacitor (317), the second electricity
Hold (318), the first inductance (319) is constituted；
First series connection microstrip line (311), the second series connection microstrip line (313), the first inductance (319), third series connection microstrip line
(315), the 4th series connection microstrip line (316), which is sequentially connected in series, connects；First microstrip line (312) in parallel is parallel to the first series connection microstrip line
(311) and the joint of the second series connection microstrip line (313), first capacitor (317) are connected to the end of the first microstrip line (312) in parallel
End；Second microstrip line (314) in parallel is parallel to the joint of the second series connection microstrip line (313) and the first inductance (319), the second electricity
Hold the end that (318) are connected to the second microstrip line (314) in parallel.
3. a kind of subminaturization Wilkinson power divider according to claim 1, which is characterized in that second mixing passes
Defeated line (32) includes the 5th series connection microstrip line (321), third parallel connection microstrip line (322), the 6th series connection microstrip line (323), the 4th
Microstrip line (324) in parallel, the 7th series connection microstrip line (325), the 8th series connection microstrip line (326), third capacitor (327), the 4th electricity
Hold (328), the second inductance (329) is constituted；
5th series connection microstrip line (321), the 6th series connection microstrip line (323), the second inductance (329), the 7th series connection microstrip line
(325), the 8th series connection microstrip line (326), which is sequentially connected in series, connects；Third parallel connection microstrip line (322) is parallel to the 5th series connection microstrip line
(321) and the joint of the 6th series connection microstrip line (323), third capacitor (327) are connected to the end of third parallel connection microstrip line (322)
End；4th microstrip line (324) in parallel is parallel to the joint of the 6th series connection microstrip line (323) and the second inductance (329), the 4th electricity
Hold the end that (328) are connected to the 4th microstrip line (324) in parallel.
4. a kind of subminaturization Wilkinson power divider according to claim 1, which is characterized in that the Wilkinson function
Dividing device is to halve power splitter；In first mixed transport line (31) and the second mixed transport line (32), corresponding microstrip line electricity
Equal length, characteristic impedance are identical；Corresponding capacitor's capacity is equal, and corresponding inductance inductance value is equal；And two-way mixing passes
Defeated line is full symmetric, and connection type is also identical.
5. a kind of subminaturization Wilkinson power divider according to claim 1, which is characterized in that the microstrip line (2)
For 50 Ω microstrip lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821197642.5U CN208655866U (en) | 2018-07-27 | 2018-07-27 | A kind of subminaturization Wilkinson power divider |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821197642.5U CN208655866U (en) | 2018-07-27 | 2018-07-27 | A kind of subminaturization Wilkinson power divider |
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| Publication Number | Publication Date |
|---|---|
| CN208655866U true CN208655866U (en) | 2019-03-26 |
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ID=65787010
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| CN201821197642.5U Active CN208655866U (en) | 2018-07-27 | 2018-07-27 | A kind of subminaturization Wilkinson power divider |
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2018
- 2018-07-27 CN CN201821197642.5U patent/CN208655866U/en active Active
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