CN107946717A - Wilkinson power divider - Google Patents
Wilkinson power divider Download PDFInfo
- Publication number
- CN107946717A CN107946717A CN201711048493.6A CN201711048493A CN107946717A CN 107946717 A CN107946717 A CN 107946717A CN 201711048493 A CN201711048493 A CN 201711048493A CN 107946717 A CN107946717 A CN 107946717A
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- China
- Prior art keywords
- power divider
- wilkinson power
- output port
- signal
- microwave
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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 present invention relates to a kind of Wilkinson power divider, including dielectric layer, it is attached to the signal metal layer of the dielectric layer side and is attached to the metal back layer of the dielectric layer opposite side, signal metal layer, dielectric layer and metal back layer form microstrip line construction, and the signal metal layer includes：Microwave transmission branch, for microwave signal at least 2 road microwave branch signals will to be divided into all the way；Output port, matches for exporting at least 2 road microwave branch signals, the output port number with the microwave transmission branch way；Electromagnetic bandgap structure, the electromagnetic bandgap structure are arranged on the output port position, the harmonic wave produced for suppressing power splitter output signal.Compared with the extra harmonic supression filter circuit of traditional addition is to carry out the Wilkinson power divider of out-of-band harmonics suppression, Wilkinson power divider of the invention effectively suppresses to export signal higher hamonic wave, greatlys save circuit layout area.
Description
Technical field
The present invention relates to power splitter field, more particularly to a kind of Wilkinson power divider.
Background technology
At present, power splitter is widely used in microwave regime, in such as power amplifier, frequency mixer and frequency multiplier etc..
But traditional Wilkinson power divider, itself does not have to the harmonic inhibition capability outside band, in some reality
Generally require to add extra harmonic supression filter circuit in carry out out-of-band harmonics suppression, the filter of traditional harmonics restraint
Ripple device be often made with both ends work in centre frequency quarter-wave open circuit microstrip line form, cause circuit area compared with
Greatly.
The content of the invention
Based on this, it is necessary to asked for the Wilkinson power divider circuit area with harmonic supression filter circuit is larger
A kind of topic, there is provided Wilkinson power divider.
A kind of Wilkinson power divider, including dielectric layer, be attached to the dielectric layer side signal metal layer and attachment
In the metal back layer of the dielectric layer opposite side, the signal metal layer, dielectric layer and metal back layer form microstrip line construction,
It is characterized in that, the signal metal layer includes：
Input port, for inputting microwave signal；
Microwave transmission branch, way are at least 2 roads and are connected with the input port, for the microwave signal to be divided
Into at least 2 road microwave branch signals；
Output port, for exporting at least 2 road microwave branch signals, the output port number is passed with the microwave
Defeated branch way matches, and each output port is connected with microwave transmission branch all the way respectively；
Electromagnetic bandgap structure, is arranged on the output port position, the harmonic wave produced for suppressing power splitter output signal.
In one of the embodiments, at least one composition of the electromagnetic bandgap structure in the following manner：
The metal patch arranged according to periodic regularity is sticked on the signal metal layer；
The groove arranged according to periodic regularity is opened up on the metal back layer；
The regular figure arranged according to periodic regularity is scribed on the signal metal layer.
In one of the embodiments, each output port position is both provided with the electromagnetic bandgap structure.
In one of the embodiments, isolation resistance is further included, isolation resistance is further included, connects between adjacent two output port
It is connected to the isolation resistance.
In one of the embodiments, the microwave transmission branch way is 2 tunnels, and the output port number is 2.
In one of the embodiments, the equal length of microwave transmission branch described in two-way, microwave transmission branch described in two-way
The width on road is equal.
In one of the embodiments, the material of the signal metal layer and metal back layer is copper.
In one of the embodiments, the dielectric layer is the RO4003C materials that dielectric constant is 3.55.
In one of the embodiments, the input port and the output port microstrip line construction impedance are 50 Ω.
In one of the embodiments, the resistance value of the isolation resistance is 100 Ω.
Above-mentioned Wilkinson power divider, extra harmonic supression filter circuit is to carry out out-of-band harmonics with traditional addition
The Wilkinson power divider of suppression is compared, and output port position is provided with electromagnetic bandgap structure so that Wilkinson power divider
The third and fifth harmonic of output energy can effectively be suppressed, while ensure Insertion Loss, isolation and the indices of radar in band
Well.On the basis of effective suppression output signal higher hamonic wave, circuit layout area is greatlyd save.
Brief description of the drawings
Fig. 1 is the structure diagram of Wilkinson power divider in one embodiment of the invention；
Fig. 2 is the input/output end port reflectance factor oscillogram of Wilkinson power divider in one embodiment of the invention；
Fig. 3 is the oscillogram of the output port Insertion Loss of Wilkinson power divider in one embodiment of the invention；
Fig. 4 is the oscillogram of the output port isolation of the Wilkinson power divider in one embodiment of the invention；
Fig. 5 is the electromagnetic belt that is emulated to electromagnetic bandgap structure equivalent circuit in one embodiment of the present of invention
The reflectance factor oscillogram of the input port of gap structure；
Fig. 6 is the electromagnetic belt that is emulated to electromagnetic bandgap structure equivalent circuit in one embodiment of the present of invention
The insertion loss oscillogram of the output port of gap structure.
Embodiment
Referring to Fig. 1, Fig. 1 is the structure diagram of Wilkinson power divider in an embodiment.
In one embodiment of the invention, the Wilkinson power divider includes dielectric layer, is attached to the dielectric layer
The signal metal layer of side, and it is attached to the metal back layer of the dielectric layer opposite side, signal metal layer, dielectric layer and metal
Bottom forms microstrip line construction, and the signal metal layer includes input port 10, the first branch 11, the second branch 12 and isolation electricity
Resistance 13.
First branch 11 includes the first microwave transmission branch 111, the first electromagnetic bandgap structure 112 and the first output port
113。
Second branch 12 includes the second microwave transmission branch 121, the second electromagnetic bandgap structure 122 and the second output port
123。
Electromagnetic bandgap structure is that a kind of periodicity with band-stop response, slow wave characteristic, high equivalent characteristic impedance characteristic is micro-
Wave structure, it can prevent propagation of the electromagnetic wave on some direction or all directions.Power splitter is by input signal power
It is divided into a kind of multiport Microwave Net of equal or unequal a few road power outputs.Power splitter is the most frequently used in circuit system
Element.It can be both used in antenna array, can also be used in microwave circuits.And Wilkinson power divider due to
The low and good isolation of its simple circuit structure, loss, becomes common power divider.
But traditional Wilkinson power divider, itself does not have to the harmonic inhibition capability outside band, in some reality
Generally require to add extra harmonic supression filter circuit in carry out out-of-band harmonics suppression, the filter of traditional harmonics restraint
Ripple device be often made with both ends work in centre frequency quarter-wave open circuit microstrip line form, cause circuit area compared with
Greatly.
The present invention adds electromagnetic bandgap structure in Wilkinson power divider circuit design, suppresses prestige using its band-stop response
Er Jinsen power splitters export the harmonic wave of signal, reduce circuit size using its slow wave characteristic, and ensure that Wilkinson power divider
There is the advantages of filter with low insertion loss, high isolation.
In one embodiment of the present of invention, electromagnetic bandgap structure can be by sticking periodically on the signal metal layer
Metal patch, open up periodic groove on the metal back layer or scribe periodic regular figure on the signal metal layer
The mode of shape is formed.
In one embodiment of the present of invention, the Wilkinson power divider is two power splitters, and the input of input port is believed
Number energy is divided into the output of two-way energy.In the present embodiment, the Wilkinson power divider has two-way microwave transmission branch and two
A output port.In other embodiments, when Wilkinson power divider is three power splitters, four power splitters, microwave transmission branch
Also change therewith with the quantity of output port, output port number matches with microwave transmission branch way.
In one embodiment of the present of invention, the Wilkinson power divider will input to halve Wilkinson power divider
The input signal energy of port is divided into the equal energy output of two-way.In the present embodiment, the first microwave transmission branch 111
With the equal length of the second microwave transmission branch 121, the first microwave transmission branch 111 and the second microwave transmission branch 121
Width it is equal.In other embodiments, when Wilkinson power divider is not decile power splitter, the first microwave transmission branch
The length and width of 111 and second microwave transmission branch 121 of road can do different adjustment according to actual conditions.
In one embodiment of the present of invention, first electromagnetic bandgap structure 112 is arranged on the first output port 113
Put, second electromagnetic bandgap structure 122 is arranged on 123 position of the second output port, is hindered using the band of electromagnetic bandgap structure special
Property suppress Wilkinson power divider output signal harmonic wave.In the present embodiment, what electromagnetic bandgap structure suppressed is output signal
Third and fifth harmonic.In other embodiments, it is described by varying the concrete structure and parameter of electromagnetic bandgap structure
Electromagnetic bandgap structure can suppress other higher hamonic waves.
In one embodiment of the present of invention, electromagnetic bandgap structure is arranged on the output port position, not only acts as suppression
The effect of triple-frequency harmonics and quintuple harmonics processed, and it is simple in structure, insertion loss is low, isolation is high, reduce microwave and transmitting
During loss, improve the efficiency of transmission of microwave.With adding extra harmonic supression filter circuit to carry out with outer humorous
The Wilkinson power divider that ripple suppresses is compared, and greatlys save circuit layout area.
First output port, 113 and second output port 123 is used to be output to by the energy halved next
A circuit unit.
Referring to Fig. 2, Fig. 2 is the input/output end port reflection system of the Wilkinson power divider in one embodiment of the invention
Number oscillogram.Abscissa represents frequency, unit GHz, and ordinate represents amplitude, and unit is decibel, which represents this hair
The situation that the input port of Wilkinson power divider in bright one embodiment and the reflectance factor of output port change with frequency.
Wherein, S (1,1) represents the oscillogram that input port reflectance factor changes with frequency, and S (2,2) represents the reflection of the first output port
The oscillogram that coefficient changes with frequency, S (3,3) represent the oscillogram that the second output port reflectance factor changes with frequency.From figure
In as can be seen that the Wilkinson power divider in the bandwidth of 2.2-2.6GHz, input port reflectance factor S11 is less than -20dB,
Output port reflectance factor S22, S33 are less than -20dB.Understand that the Wilkinson power divider reflectance factor is small, return loss is small, instead
Penetrate low in energy consumption, transimission power height.
Referring to Fig. 3, Fig. 3 is the waveform of the output port Insertion Loss of the Wilkinson power divider in one embodiment of the invention
Figure.Abscissa represents frequency, unit GHz, and ordinate represents amplitude, and unit is decibel, which represents the present invention one
The situation that the insertion loss of the output port of Wilkinson power divider in embodiment changes with frequency.Wherein, S (2,1) is represented
The oscillogram that first output port insertion loss changes with frequency, S (3,1) represent that the second output port insertion loss becomes with frequency
The oscillogram of change.It can be seen from the figure that the Wilkinson power divider is in the bandwidth of 2.2-2.6GHz, two output ports
Insertion loss S (2,1) and S (3,1) is less than 0.2dB, and two channel phases are consistent substantially so that after two work(point
The two-way microwave branch signal phase arrived is consistent, and work(divides effect good.The Wilkinson power divider is in triple-frequency harmonics and five times at the same time
Rejection ability at harmonic wave is stronger, and wherein triple-frequency harmonics is suppressed to -30dB, and quintuple harmonics is suppressed to -20dB.
Referring to Fig. 4, Fig. 4 is the waveform of the output port isolation of the Wilkinson power divider in one embodiment of the invention
Figure.Abscissa represents frequency, unit GHz, and ordinate represents amplitude, and unit is decibel, which represents the present invention one
The situation that the output port isolation of Wilkinson power divider in embodiment changes with frequency.Wherein, S (3,2) is first
The situation that isolation between output port and the second output port changes with frequency.It can be seen from the figure that the Wilkinson
For power splitter in the bandwidth of 2.2-2.6GHz, output port isolation S23 is less than -20dB, interfering with each other small.
Referring to Fig. 5 and Fig. 6, Fig. 5 and the emulation that Fig. 6 is the electromagnetic bandgap structure equivalent circuit in one embodiment of the invention
Result figure.Abscissa represents frequency, unit GHz, and ordinate represents amplitude, and unit is decibel, which represents the present invention
The reflectance factor of the input port of electromagnetic bandgap structure in one embodiment and the insertion loss of output port change with frequency
Situation.Wherein, S (1,1) represents the situation that the reflectance factor of electromagnetic bandgap structure input port changes with frequency, S (2,1) table
Show the situation that the insertion loss of electromagnetic bandgap structure output port changes with frequency.Think microstrip line it can be seen from the figure that working as
For without time-consuming, the equivalent circuit of the electromagnetic bandgap structure rejection ability at triple-frequency harmonics and quintuple harmonics is stronger.Thus exist
The output terminal of Wilkinson power divider, which adds the electromagnetic bandgap structure, can effectively suppress three times and quintuple harmonics.
Specifically, the material of the signal metal layer and metal back layer is copper, and the dielectric layer is that dielectric constant is
3.55 RO4003C materials, input port and the output port micro-strip line impedance are 50 Ω, and the isolation resistance is connected to
Between one output port and the second output port, resistance value is 100 Ω.In other embodiments, when Wilkinson power divider is more
When road exports, isolation resistance will be accessed between the adjacent output port of each two, resistance value does different adjustment according to actual conditions.
Above-mentioned Wilkinson power divider, extra harmonic supression filter circuit is to carry out out-of-band harmonics with traditional addition
The Wilkinson power divider of suppression is compared, and output port position is provided with electromagnetic bandgap structure so that Wilkinson power divider
The third and fifth harmonic of output energy can effectively be suppressed, while ensure Insertion Loss, isolation and the indices of radar in band
Well.In effective suppression output signal higher hamonic wave, meet bandwidth of operation, the base that simple in structure, insertion loss is low, isolation is high
On plinth, circuit layout area is greatlyd save.
Embodiment described above only expresses the several embodiments of the present invention, its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of Wilkinson power divider, including dielectric layer, it is attached to the signal metal layer of the dielectric layer side and is attached to
The metal back layer of the dielectric layer opposite side, the signal metal layer, dielectric layer and metal back layer form microstrip line construction, its
It is characterized in that, the signal metal layer includes：
Input port, for inputting microwave signal；
Microwave transmission branch, way are at least 2 roads and are connected with the input port, for by the microwave signal be divided into
Few 2 road microwave branch signals；
Output port, for exporting at least 2 road microwave branch signals, the output port number and the microwave transmission branch
Road way matches, and each output port is connected with microwave transmission branch all the way respectively；
Electromagnetic bandgap structure, is arranged on the output port position, the harmonic wave produced for suppressing power splitter output signal.
2. Wilkinson power divider according to claim 1, it is characterised in that the electromagnetic bandgap structure passes through with lower section
At least one composition of formula：
The metal patch arranged according to periodic regularity is sticked on the signal metal layer；
The groove arranged according to periodic regularity is opened up on the metal back layer；
The regular figure arranged according to periodic regularity is scribed on the signal metal layer.
3. Wilkinson power divider according to claim 1, it is characterised in that each output port position is respectively provided with
State electromagnetic bandgap structure.
4. Wilkinson power divider according to claim 1, it is characterised in that further include isolation resistance, adjacent two output
The isolation resistance is connected between port.
5. Wilkinson power divider according to claim 4, it is characterised in that the microwave transmission branch way is 2 tunnels,
The output port number is 2.
6. Wilkinson power divider according to claim 5, it is characterised in that the length of microwave transmission branch described in two-way
Equal, the width of microwave transmission branch is equal described in two-way.
7. Wilkinson power divider according to claim 1, it is characterised in that the signal metal layer and metal back layer
Material is copper.
8. Wilkinson power divider according to claim 1, it is characterised in that the dielectric layer is that dielectric constant is 3.55
RO4003C materials.
9. Wilkinson power divider according to claim 1, it is characterised in that the input port and the output port
Partial microstrip line construction impedance is 50 Ω.
10. Wilkinson power divider according to claim 5, it is characterised in that the resistance value of the isolation resistance is 100
Ω。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711048493.6A CN107946717A (en) | 2017-10-31 | 2017-10-31 | Wilkinson power divider |
| PCT/CN2018/078914 WO2019085368A1 (en) | 2017-10-31 | 2018-03-14 | Wilkinson power divider |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711048493.6A CN107946717A (en) | 2017-10-31 | 2017-10-31 | Wilkinson power divider |
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| CN107946717A true CN107946717A (en) | 2018-04-20 |
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| CN201711048493.6A Pending CN107946717A (en) | 2017-10-31 | 2017-10-31 | Wilkinson power divider |
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| CN (1) | CN107946717A (en) |
| WO (1) | WO2019085368A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599657A (en) * | 2018-11-29 | 2019-04-09 | 安徽大学 | It is a kind of based on antenna array and function divide feeding network integrated design towards 5G base-station antenna array and its design method |
| CN114039179A (en) * | 2021-09-29 | 2022-02-11 | 电子科技大学长三角研究院(湖州) | Terahertz active quasi-circulator based on CMOS (complementary Metal oxide semiconductor) process |
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| US11757166B2 (en) | 2020-11-10 | 2023-09-12 | Aptiv Technologies Limited | Surface-mount waveguide for vertical transitions of a printed circuit board |
| US11749883B2 (en) | 2020-12-18 | 2023-09-05 | Aptiv Technologies Limited | Waveguide with radiation slots and parasitic elements for asymmetrical coverage |
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| US11444364B2 (en) | 2020-12-22 | 2022-09-13 | Aptiv Technologies Limited | Folded waveguide for antenna |
| US11616306B2 (en) | 2021-03-22 | 2023-03-28 | Aptiv Technologies Limited | Apparatus, method and system comprising an air waveguide antenna having a single layer material with air channels therein which is interfaced with a circuit board |
| US11962085B2 (en) | 2021-05-13 | 2024-04-16 | Aptiv Technologies AG | Two-part folded waveguide having a sinusoidal shape channel including horn shape radiating slots formed therein which are spaced apart by one-half wavelength |
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| US20100283553A1 (en) * | 2009-05-05 | 2010-11-11 | National Chiao Tung University | Tri-frequency duplexer circuit and multi-frequency duplexer circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599657A (en) * | 2018-11-29 | 2019-04-09 | 安徽大学 | It is a kind of based on antenna array and function divide feeding network integrated design towards 5G base-station antenna array and its design method |
| CN114039179A (en) * | 2021-09-29 | 2022-02-11 | 电子科技大学长三角研究院(湖州) | Terahertz active quasi-circulator based on CMOS (complementary Metal oxide semiconductor) process |
| CN114039179B (en) * | 2021-09-29 | 2022-05-27 | 电子科技大学长三角研究院(湖州) | Terahertz active quasi-circulator based on CMOS (complementary Metal oxide semiconductor) process |
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| WO2019085368A1 (en) | 2019-05-09 |
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Application publication date: 20180420 |