CN108183301A - A kind of miniaturization Wilkinson power divider with low-pass filtering - Google Patents
A kind of miniaturization Wilkinson power divider with low-pass filtering Download PDFInfo
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- CN108183301A CN108183301A CN201711315877.XA CN201711315877A CN108183301A CN 108183301 A CN108183301 A CN 108183301A CN 201711315877 A CN201711315877 A CN 201711315877A CN 108183301 A CN108183301 A CN 108183301A
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- low
- miniaturization
- power divider
- wilkinson power
- pass filtering
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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
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Abstract
A kind of miniaturization Wilkinson power divider with low-pass filtering.Its composition includes:Dielectric layer, the dielectric layer side composite signal metal layer, the dielectric layer opposite side composite signal metal ground layer, the signal metal layer include：Microwave transmission branch, for the microwave transmission branch for that microwave signal will be divided into the output of multichannel microwave branch signal and isolation resistance all the way, the microwave transmission branch is placed on the signal cross-talk between two output ports, increases isolation.The present invention is used to minimize Wilkinson power divider.
Description
Technical field：
The present invention relates to a kind of miniaturization Wilkinson power dividers with low-pass filtering.
Background technology：
With the fast development of computer technology and integrated circuit in recent decades, wireless communication technique has also obtained increasingly wider
General application.Corresponding radio frequency microwave circuit has also obtained more quickly development and widely utilization.
And in wireless communication system and radar system, especially in satellite communication system, have to the selectivity of channel
Very high requirement, and this just needs frequency microwave wave filter to realize.The effect of wave filter is exactly to filter frequency-selecting, is filtered out useless
Frequency signal selects useful frequency signal and a variety of different frequency signals of separation.
As microwave passive component-Wilkinson power divider important in radio frequency microwave circuit, effect is point of power
With with synthesis.
Nowadays, in the research field of 5G technologies, the requirement to microwave radio circuit is to surpass within 1 year 1 year-pursuit more
Add and stablize excellent performance, size is small, at low cost, highly integrated property etc..It is independent for traditional Wireless microwave RF communication system
The components such as antenna, wave filter, power splitter be each of which communication port necessary to, therefore traditional RF communication system
Often volume is big, loss is big, cost is also high.And if the component used can be operated in multiple frequency ranges either with multiple
Performance, then the size that can largely reduce RF communication system, the cost for reducing system, the property for improving system
Energy.
Invention content：
The object of the present invention is to provide a kind of a kind of miniaturization Weirs with low-pass filtering simple in structure, function admirable
The gloomy power splitter of gold.
Above-mentioned purpose is realized by following technical scheme：
A kind of miniaturization Wilkinson power divider with low-pass filtering, composition include:Dielectric layer, the medium
Layer side composite signal metal layer, the dielectric layer opposite side composite signal metal ground layer, the signal metal layer include：
Microwave transmission branch, the microwave transmission branch for will all the way microwave signal be divided into multichannel microwave branch signal output and every
From resistance, the microwave transmission branch is placed on the signal cross-talk between two output ports, increases isolation,
A kind of miniaturization Wilkinson power divider with low-pass filtering, the microwave transmission branch include the
One backbone-stub and the second backbone-stub, first backbone-stub and the second backbone-stub are respectively by with low pass filtered baud
Property the defects of microstrip line construction form.
A kind of miniaturization Wilkinson power divider with low-pass filtering, first backbone-stub
The characteristic impedance of defect microstrip line is, microstrip line the defects of described second backbone-stub
Characteristic impedance is。
A kind of miniaturization Wilkinson power divider with low-pass filtering, the microwave transmission branch
Electrical length is less than the electrical length of common transmission branch microstrip line.
A kind of miniaturization Wilkinson power divider with low-pass filtering, further includes isolation resistance, described
One end of isolation resistance be connected to the junction of a microwave transmission branch and output port, the isolation resistance it is another
End is connected to the junction of another microwave transmission branch and output port.
Advantageous effect：
1. the miniaturization power divider proposed by the present invention with low-frequency filter characteristics is exactly by low-pass filter and Weir gold
The performance of gloomy power splitter is integrated in one, and frequency-selecting effect can be carried out to signal on the basis of power distribution；This penetrates realization
It is the minimizing of frequency microwave circuit, easy of integration and reduce that cost is highly beneficial, the development that following 5G communicates can will be generated certain
Power-assisted, have objective economic results in society.
Description of the drawings：
Attached drawing 1 is the structure diagram that this product has the function of the miniaturization Wilkinson power divider of low-pass filtering.
Attached drawing 2 is the domain schematic diagram that this product has the function of the miniaturization Wilkinson power divider of low-pass filtering.
Attached drawing 3 is the wave for the port reflectance factor that this product has the function of the miniaturization Wilkinson power divider of low-pass filtering
Shape figure.
Attached drawing 4 is the wave for the output port Insertion Loss that this product has the function of the miniaturization Wilkinson power divider of low-pass filtering
Shape figure.
Attached drawing 5 is the phase for the output port Insertion Loss that this product has the function of the miniaturization Wilkinson power divider of low-pass filtering
Bitmap.
Attached drawing 6 is the output port isolation that this product has the function of the miniaturization Wilkinson power divider of low-pass filtering
Oscillogram.
Attached drawing 7 is the output port group delay that this product has the function of the miniaturization Wilkinson power divider of low-pass filtering
Oscillogram.
Attached drawing 8 is the equivalent circuit of this product microwave transmission branch.
Specific embodiment：
Below in conjunction with the attached drawing of the present invention, the technical solution in the embodiment of the present invention is clearly and completely described.
Embodiment 1：
A kind of miniaturization Wilkinson power divider with low-pass filtering, composition include:Dielectric layer, the medium
Layer side composite signal metal layer, the dielectric layer opposite side composite signal metal ground layer, the signal metal layer include：
Microwave transmission branch, the microwave transmission branch for will all the way microwave signal be divided into multichannel microwave branch signal output and every
From resistance, the microwave transmission branch is placed on the signal cross-talk between two output ports, increases isolation.
Microwave transmission branch includes the microstrip line using defect microstrip line construction, has low-frequency filter characteristics, spy
Sign impedance and electrical length are ；
In addition, also the microstrip line that three sections of characteristic impedances are 50 Ω is exported comprising input.
Embodiment 2：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in embodiment 1, the microwave transmission branch
Road includes the first backbone-stub and the second backbone-stub, and first backbone-stub and the second backbone-stub are respectively by with low
The defects of pass filter characteristic microstrip line construction form.
Embodiment 3：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in embodiment 2, the first trunk branch
The characteristic impedance of microstrip line of the defects of road is, micro-strip the defects of described second backbone-stub
The characteristic impedance of line is。
Wherein For the characteristic impedance of input/output port, generally 50 ohm, For the first transmission branch
The characteristic impedance of defect microstrip line construction, Characteristic impedance for the second transmission branch defect microstrip line construction;K is work(
Divide ratio.
Embodiment 4：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in embodiment 1, the microwave transmission branch
The electrical length on road is less than the electrical length of common transmission branch microstrip line.Such as it for halving Wilkinson power divider, uses
The defect microstrip line construction is smaller than the area shared by common microstrip line, is the 52.4% of conventional microstrip line area, has apparent
Miniaturization feature.
Embodiment 5：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in embodiment 1, further includes isolation resistance, institute
The one end for the isolation resistance stated is connected to the junction of a microwave transmission branch and output port, the isolation resistance it is another
One end is connected to the junction of another microwave transmission branch and output port.
Embodiment 6：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment, it is attached including dielectric layer
The dielectric layer side signal metal layer and be attached to the metal ground layer of the dielectric layer opposite side and two
Isolation resistance between a output port.The signal metal layer includes having low-pass filtering by what micro-strip defect sturcture was formed
The microwave transmission branch and input and output microstrip line of characteristic are formed.By reasonably using micro-strip defect sturcture, it is appropriate to give
Structural parameters so that micro-strip transmission branch has the effect of low-pass filtering frequency-selecting, while can cause the microwave transmission branch
Line length shorten compared to traditional Wilkinson power divider, so as to fulfill the effect of miniaturization.
The microwave transmission branch includes the first backbone-stub and the second backbone-stub.
Embodiment 7：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment includes input microstrip line
10 and output microstrip line 13, output microstrip line 14.
Embodiment 8：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment should also contain isolation electricity
Resistance 15, the connection of described isolation resistance one end are connected to the first transmission branch and the junction of output microstrip line 13, the other end
Second transmission branch and the junction of output microstrip line 14, main function are the isolation increased between two channels.
Embodiment 9：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment, the described first transmission
The microwave transmission branch 12 of 11 and second transmission branch of microwave transmission branch of branch is using defect microstrip line construction, the defect
Microstrip line construction has low-frequency filter characteristics, and its characteristic impedance is 70.7 ohm（There is low pass filtered baud corresponding to decile
The miniaturization Wilkinson power divider of property）.
Embodiment 10：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment, the signal metal
The material of layer and metal back layer is copper, copper thickness 1oz.
Embodiment 11：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment, the dielectric material
For Rogers RO5870, dielectric thickness 1.524mm.
Embodiment 12：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment, the isolation resistance
15 resistance value is 100 ohm（There is the miniaturization Wilkinson power divider of low-frequency filter characteristics corresponding to decile）.
Embodiment 13：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment, referring to attached drawing 1, design
Centre frequency be 5GHz.
In the present embodiment, the miniaturization Wilkinson power divider that should have the function of low-pass filtering includes dielectric layer, attachment
The dielectric layer side signal metal layer and be attached to the metal ground layer of the dielectric layer opposite side, the letter
Number metal layer includes microwave transmission branch 11, microwave transmission branch 12, input microstrip line 10, output microstrip line 13 and output micro-strip
Line 14.Its characteristic impedance is 50 Ω, electrical length 40deg.
Microwave transmission branch 11, microwave transmission branch 12 are for will to be divided into multichannel microwave branch signal defeated for microwave signal all the way
Go out.And the microwave transmission branch 11, microwave transmission branch 12 are formed using micro-strip defect sturcture, as shown in Figure 8, are had low
The characteristic of pass filter.
Traditional Wilkinson power divider includes dielectric layer, be attached to the dielectric layer side signal metal layer and
It is attached to the metal ground layer of the dielectric layer opposite side.Such as two power splitters, signal metal layer has two microwave transmission branches
11st, microwave transmission branch 12, microwave enter Wilkinson power divider by input port, i.e. microstrip line 10, signal are divided into
Two road signals, microwave signal are divided into two-way microwave branch signal after two microwave transmission branches 11, microwave transmission branch 12,
And then microwave is subjected to two work(point.The miniaturization Wilkinson power divider with low-frequency filter characteristics is two power splitters, unlimited
In two power splitters.
Specifically, the dielectric layer uses dielectric constant as 2.33 RO5870 planks, dielectric thickness 1.524mm, signal
Metal layer and metal ground layer are thick using 1oz copper.
Embodiment 14：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment, due to the implementation case
In the designed miniaturization Wilkinson power divider with low-frequency filter characteristics divide power splitter for one-to-two etc., so microwave biography
Defeated branch 11 and microwave transmission branch 12 are symmetrical above and below, microstrip line and microwave transmission branch 12 wherein in microwave transmission branch 11
In microstrip line parameter it is consistent, characteristic impedance be 70.7 Ω, equivalent electrical length be 90deg.Equivalent electrical length is referred here to,
Since the microstrip line is micro-strip defect sturcture, there are low-frequency filter characteristics, which causes microstrip line there are Slow-wave effect,
It is common 90deg electrical length micro-strip line length finally so that the microstrip line of the relatively common 90deg electrical length of the microstrip line shortens
53%.
The resistance value of isolation resistance is 100 Ω（The embodiment is the Wilkinson power divider of decile）.
Embodiment 15：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment, referring to attached drawing 2, microwave
The microstrip line of transmission branch 11 is parallel to the microstrip line of microwave transmission branch 12.
Embodiment 16：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment, referring to attached drawing 3, attached drawing
3 be waveform of the port reflectance factor of the miniaturization Wilkinson power divider with low-pass filtering under ADS simulated environment
Figure.Abscissa represents frequency, and ordinate represents amplitude, and unit is decibel, is the miniaturization Weir with low-pass filtering
The input port of the gloomy power splitter of gold and the reflectance factor of output port with frequency situation of change.Wherein, curve 31 represents input
The oscillogram of port reflectance factor S (1,1), curve 32 represent the oscillogram of an output port reflectance factor S (2,2), curve 33
Represent the oscillogram of another output port reflectance factor S (3.3).Due to being the miniaturization prestige with low-frequency filter characteristics of decile
Er Jinsen power splitters, thus S (2,2) and S（3,3）Curve be completely superposed.It can be seen that there should be the small of low-pass filtering
Type Wilkinson power divider is in frequency in 5GHz frequency bands, for input port reflectance factor S (1,1) less than -10dB, two defeated
Exit port reflectance factor S (2,2), S (3,3) is less than -10dB.This has the function of the miniaturization Wilkinson power divider of low-pass filtering
Reflectance factor it is small, reflection is low in energy consumption, and transimission power is high.
Embodiment 18：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment, referring to attached drawing 4, attached drawing
4 be the oscillogram of the output port Insertion Loss of the miniaturization Wilkinson power divider with low-pass filtering.Abscissa represents frequency
Rate, ordinate represent amplitude, and unit is decibel, to have the function of two of the miniaturization Wilkinson power divider of low-pass filtering
The Insertion Loss S (2,1) and S (3,1) of output port with frequency situation of change.It can be seen that there should be the small of low-pass filtering
Type Wilkinson power divider is in frequency in 5GHz frequency bands, the Insertion Loss S (2,1) and S (3,1) of two output ports are less than
0.3dB, it is seen that should have the function of that the miniaturization Wilkinson power divider of low-pass filtering was also smaller to the Insertion Loss of output port.Together
When can see that this has the function of the miniaturization Wilkinson power divider of low-pass filtering there are low-frequency filter characteristics, and its is right
Band has certain inhibition function outside.
Embodiment 19：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment, referring to attached drawing 5, attached drawing
5 be the phase diagram of the output port Insertion Loss of the miniaturization Wilkinson power divider with low-pass filtering.Abscissa represents frequency
Rate, ordinate represent phase, and unit is degree, are that two of the miniaturization Wilkinson power divider with low-pass filtering are defeated
The phase of the Insertion Loss S (2,1) and S (3,1) of exit port with frequency situation of change.It can be seen that the ultra wide band Wilkinson work(
Divide device in frequency in 5GHz frequency bands, the Insertion Loss phase of two output ports is basically identical so as to be obtained after two work(point
Two-way microwave branch signal phase is consistent, and work(divides effect good.
Embodiment 20：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment, referring to attached drawing 6, attached drawing
6 be the oscillogram of the output port isolation of the miniaturization Wilkinson power divider with low-pass filtering.Abscissa represents
Frequency, ordinate represent amplitude, and unit is decibel, to have the function of the two of the miniaturization Wilkinson power divider of low-pass filtering
Isolation S (3,2) between a output port with frequency situation of change.It can be seen that there should be the small of low-pass filtering
Type Wilkinson power divider is in frequency in 5GHz frequency bands, and the isolation S (3,2) of two output ports is less than -30dB, each other
It interferes small.
Embodiment 21：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment, referring to attached drawing 7, attached drawing
7 is have the function of the group delay of the output terminal of the miniaturization Wilkinson power divider of low-pass filtering in an embodiment.Abscissa table
Show frequency, ordinate represents group delay, and unit is millisecond.It it can be seen that should the Wilkinson work(point with the consistent function of harmonic wave
Group delay of the device in entire frequency range is all fine, and transmission delay is small.
The above-mentioned miniaturization Wilkinson power divider with low-pass filtering, in the micro- of traditional Wilkinson power divider
Micro-strip defect sturcture is added in wave transmission branch so that each transmission branch becomes a low-pass filter, Ran Houwei
Form Wilkinson power divider, by the emulation of ADS and HFSS obtain one be equivalent to 90deg electrical length the defects of it is micro-
Strip line structure forms Wilkinson power divider.The Wilkinson power divider is traditional Wilkinson power divider chip area
52.4%, there is apparent miniaturization feature.
Embodiment 22：
A kind of miniaturization Wilkinson power divider with low-pass filtering described in above-described embodiment, it is attached including dielectric layer
The dielectric layer side signal metal layer and be attached to the metal ground layer of the dielectric layer opposite side, the signal gold
Belong to layer include microwave transmission branch, for will all the way microwave signal be divided into multichannel microwave branch signal output, comprise in addition by
Isolation resistance.The characteristic impedance of the microwave transmission branch is 70.7 ohm, is formed using micro-strip defect sturcture, has low pass filtered
Wave property, for common electrical length, length is common 52.4%.The resistance value of the isolation resistance be 100 Ω, one
End is connected to a microwave transmission branch and output port junction is micro-, the other end be connected to an other microblogging transmission branch and
Output port junction.By on Wilkinson power divider by traditional characteristic impedance be 70.7 ohm, electrical length 90deg
Microstrip line replacement be microstrip line construction that the above-mentioned characteristic impedance with low-frequency filter characteristics is 70.7 ohm, form a kind of new
The power splitter of type can have low pass rate wave property and miniaturization feature simultaneously, and then obtain a kind of simple in structure having low pass
The miniaturization Wilkinson power divider of filter function.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned
The all possible combination of each technical characteristic in embodiment is all described, as long as however, the combination of these technical characteristics not
There are contradictions, are all considered to be the range of this specification record.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but
It can not therefore be construed as limiting the scope of the patent.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 range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (5)
1. a kind of miniaturization Wilkinson power divider with low-pass filtering, composition includes:Dielectric layer, it is characterized in that:
The dielectric layer side composite signal metal layer, the dielectric layer opposite side composite signal metal ground layer, the signal
Metal layer includes：Microwave transmission branch, the microwave transmission branch are used to microwave signal to be divided into multichannel microwave branch all the way
Signal export and isolation resistance, the microwave transmission branch be placed on the signal cross-talk between two output ports, increase every
From degree.
2. a kind of miniaturization Wilkinson power divider with low-pass filtering according to claim 1, it is characterized in that:
The microwave transmission branch includes the first backbone-stub and the second backbone-stub, first backbone-stub and the second trunk
Branch respectively by with low-frequency filter characteristics the defects of microstrip line construction form.
3. a kind of miniaturization Wilkinson power divider with low-pass filtering according to claim 2, it is characterized in that:
The characteristic impedance of microstrip line of the defects of described first backbone-stub is, described second master
The characteristic impedance of microstrip line of the defects of Heavenly Stems and Earthly Branches road is。
4. a kind of miniaturization Wilkinson power divider with low-pass filtering according to claim 1, it is characterized in that:
The electrical length of the microwave transmission branch is less than the electrical length of common transmission branch microstrip line.
5. a kind of miniaturization Wilkinson power divider with low-pass filtering according to claim 1, it is characterized in that:
Isolation resistance is further included, one end of the isolation resistance is connected to the junction of a microwave transmission branch and output port,
The other end of the isolation resistance is connected to the junction of another microwave transmission branch and output port.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711315877.XA CN108183301A (en) | 2017-12-12 | 2017-12-12 | A kind of miniaturization Wilkinson power divider with low-pass filtering |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711315877.XA CN108183301A (en) | 2017-12-12 | 2017-12-12 | A kind of miniaturization Wilkinson power divider with low-pass filtering |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110416670A (en) * | 2019-06-21 | 2019-11-05 | 佳木斯大学 | Multistage bandpass filter with small-sized double bandpass filter and its composition |
| WO2020198349A1 (en) * | 2019-03-25 | 2020-10-01 | The Texas A&M University System | Millimeter-wave fully-integrated full duplexer modules with and without internal low noise amplifier and power amplifier for 5g applications |
| CN112003580A (en) * | 2020-08-24 | 2020-11-27 | 上海联影医疗科技有限公司 | Power combiner and medical equipment |
| WO2021155271A1 (en) * | 2020-01-31 | 2021-08-05 | The Texas A&M University System | An ultra-wideband ultra-isolation fully integrated fdd transmit-receive duplexer front-end module for 5g and next-generation wireless communication |
| US12009565B2 (en) | 2020-05-14 | 2024-06-11 | Nxp B.V. | Power combiner/splitter for millimetre wave applications |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020198349A1 (en) * | 2019-03-25 | 2020-10-01 | The Texas A&M University System | Millimeter-wave fully-integrated full duplexer modules with and without internal low noise amplifier and power amplifier for 5g applications |
| CN110416670A (en) * | 2019-06-21 | 2019-11-05 | 佳木斯大学 | Multistage bandpass filter with small-sized double bandpass filter and its composition |
| WO2021155271A1 (en) * | 2020-01-31 | 2021-08-05 | The Texas A&M University System | An ultra-wideband ultra-isolation fully integrated fdd transmit-receive duplexer front-end module for 5g and next-generation wireless communication |
| US12009565B2 (en) | 2020-05-14 | 2024-06-11 | Nxp B.V. | Power combiner/splitter for millimetre wave applications |
| CN112003580A (en) * | 2020-08-24 | 2020-11-27 | 上海联影医疗科技有限公司 | Power combiner and medical equipment |
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Application publication date: 20180619 |