CN107086345A - Ultra wide band wilkinson power divider - Google Patents
Ultra wide band wilkinson power divider Download PDFInfo
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- CN107086345A CN107086345A CN201710225684.9A CN201710225684A CN107086345A CN 107086345 A CN107086345 A CN 107086345A CN 201710225684 A CN201710225684 A CN 201710225684A CN 107086345 A CN107086345 A CN 107086345A
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- microstrip line
- power divider
- wilkinson power
- wide band
- ultra wide
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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
The present invention relates to a kind of ultra wide band Wilkinson power divider, including dielectric layer, it is attached to the signal metal layer of the dielectric layer side, with the metal back layer for being attached to the dielectric layer opposite side, the signal metal layer includes microwave transmission branch road, for microwave signal the output of multichannel microwave branch signal will to be divided into all the way, with microstrip line prolongation structure, the microstrip line prolongation structure is made up of microstrip line, one end of the microstrip line prolongation structure is connected on the microwave transmission branch road, the other end is hanging, the length of the microstrip line is 1/4 centre wavelength of the microwave by the ultra wide band Wilkinson power divider, limit for increasing Wilkinson power divider；By setting microstrip line prolongation structure in the transmission branch of Wilkinson power divider, increase the limit of Wilkinson power divider, its frequency band can be widened, and then obtain a kind of ultra wide band Wilkinson power divider simple in construction.
Description
Technical field
The present invention relates to power splitter field, more particularly to a kind of ultra wide band Wilkinson power divider.
Background technology
Power splitter has a wide range of applications in microwave and millimeter wave telecommunication circuit, such as in microwave power detector, mixing
There is application in numerous circuits such as device, phase-detection and TR components.At present, with the fast development of wireless communication technology, device
The broadband of part, low-loss become the study hotspot in microwave radio circuit, and as ultra-wideband antenna, ultra wide band are filtered
The research and application of the ultra wide band device such as device, the demand to ultra wide band power divider also become increasing.
But, the narrower bandwidth of traditional Wilkinson power divider, serious constrains Wilkinson power divider in ultra-wide
With the use in field.
The content of the invention
Based on this, it is necessary to which there is provided one kind is simple in construction the problem of for traditional Wilkinson power divider narrower bandwidth
Ultra wide band Wilkinson power divider.
A kind of ultra wide band Wilkinson power divider, including dielectric layer, are attached to the signal metal layer of the dielectric layer side,
With the metal back layer for being attached to the dielectric layer opposite side, the signal metal layer includes：
Microwave transmission branch road, for microwave signal the output of multichannel microwave branch signal will to be divided into all the way；
Microstrip line prolongation structure, is made up of microstrip line, and one end of the microstrip line prolongation structure is connected to the microwave and passed
On defeated branch road, the other end is hanging, and the length of the microstrip line is the microwave by the ultra wide band Wilkinson power divider
1/4 centre wavelength, the limit for increasing Wilkinson power divider.
Above-mentioned ultra wide band Wilkinson power divider, including dielectric layer, are attached to the signal metal layer of the dielectric layer side,
With the metal back layer for being attached to the dielectric layer opposite side.The signal metal layer includes microwave transmission branch road and microstrip line is expanded
Structure, the microstrip line prolongation structure is made up of microstrip line, and one end of the microstrip line prolongation structure is connected to the microwave and passed
On defeated branch road, the other end is hanging, the limit for increasing Wilkinson power divider；Pass through the transmission branch in Wilkinson power divider
Microstrip line prolongation structure is set on road, increases the limit of Wilkinson power divider, its frequency band can be widened, and then obtain a kind of knot
The simple ultra wide band Wilkinson power divider of structure.
In one of the embodiments, the microwave transmission branch road includes the first trunk microstrip line and the second trunk micro-strip
Line, one end of the microstrip line prolongation structure is connected to the transmission between the first trunk microstrip line and the second trunk microstrip line
On passage, the other end is hanging.
In one of the embodiments, the microstrip line prolongation structure includes the wall scroll set parallel to microwave transmission direction
Microstrip line and the two line structure identical microstrip line branches set perpendicular to microwave transmission direction, the wall scroll microstrip line are connected to
Between the first trunk microstrip line and the second trunk microstrip line, it is micro- that one end per road microstrip line branch connects the wall scroll respectively
One end with line, the other end is hanging.
In one of the embodiments, the microstrip line branch includes the first microstrip line and the second microstrip line, described first
One end of microstrip line connects one end of the wall scroll microstrip line, and the other end of first microstrip line connects second microstrip line
One end, the other end of second microstrip line is hanging.
In one of the embodiments, the impedanoe ratio of second microstrip line and first microstrip line is 2.25:1.
In one of the embodiments, the microwave transmission branch road has and is provided with two, every microwave transmission branch road
The microstrip line prolongation structure.
In one of the embodiments, in addition to isolation resistance, one end of the isolation resistance connects a microwave transmission
One end that the first trunk microstrip line is connected with wall scroll microstrip line described in branch road, the other end of the isolation resistance connects another
One end that the first trunk microstrip line is connected with wall scroll microstrip line described in microwave transmission branch road.
In one of the embodiments, the material of the signal metal layer and metal back layer is gold.
In one of the embodiments, the resistance of the wall scroll microstrip line is 50 Ω.
In one of the embodiments, the resistance of the isolation resistance is 100 Ω.
Brief description of the drawings
Fig. 1 is the structural representation of ultra wide band Wilkinson power divider in an embodiment；
Fig. 2 is the structural representation of ultra wide band Wilkinson power divider in another embodiment；
Fig. 3 is the oscillogram of the port reflectance factor of ultra wide band Wilkinson power divider in an embodiment；
Fig. 4 is the oscillogram of the output port Insertion Loss of ultra wide band Wilkinson power divider in an embodiment；
Fig. 5 is the phase diagram of the output port Insertion Loss of ultra wide band Wilkinson power divider in an embodiment；
Fig. 6 is the oscillogram of the output port isolation of ultra wide band Wilkinson power divider in an embodiment.
Embodiment
Referring to Fig. 1, Fig. 1 is the structural representation of ultra wide band Wilkinson power divider in an embodiment.
In the present embodiment, the ultra wide band Wilkinson power divider includes dielectric layer, is attached to the dielectric layer side
Signal metal layer, and the metal back layer of the dielectric layer opposite side is attached to, the signal metal layer includes microwave transmission branch road
11st, 12 and microstrip line expand knot 20,21.
Microwave transmission branch road 11,12 is used to that microwave signal the output of multichannel microwave branch signal will to be divided into all the way.
Traditional Wilkinson power divider includes dielectric layer, is attached to the signal metal layer of the dielectric layer side, and attached
The metal back layer in the dielectric layer opposite side.Such as two power splitters, its signal metal layer have two microwave transmission branch roads 11,
12, every microwave transmission branch road 11,12 includes the microstrip line of series connection, and microwave enters Weir by input port, i.e. microstrip line 10
Kelvin effect is produced during golden gloomy power splitter so that microwave concentrates on the signal metal layer transmission positioned at top layer, microwave passes through two
It is divided into two-way microwave branch signal after microwave transmission branch road 11,12, and then microwave is subjected to two work(point.The Wilkinson power divider
For two power splitters, two power splitters are not limited to.
Specifically, the dielectric layer uses dielectric constant for 9.9 aluminium oxide ceramics, signal metal layer and metal back layer are adopted
With gold, golden electrical conductivity is high, intrinsic frequency is high, Kelvin effect is good.
Microstrip line prolongation structure 20,21 is made up of microstrip line, and one end of microstrip line prolongation structure 20 is connected to microwave transmission
On branch road 11, the other end is hanging, and one end of microstrip line prolongation structure 21 is connected on the microwave transmission branch road 12, and the other end hangs
Sky, the length of the microstrip line is 1/4 centre wavelength of the microwave by the ultra wide band Wilkinson power divider, for increasing
Plus the limit of Wilkinson power divider, the Wilkinson power divider refers to traditional Wilkinson power divider.
Microstrip line prolongation structure is respectively provided with every microwave transmission branch road 11,12 of traditional Wilkinson power divider
20th, 21, the microstrip line prolongation structure 20,21 is made up of microstrip line, and the length of every microstrip line is by the ultra wide band Weir
1/4 centre wavelength of the microwave of the gloomy power splitter of gold.One end of the microstrip line prolongation structure 20,21 is connected to microwave transmission branch road
11st, on 12, the other end is hanging so that microstrip line open circuit, and 1/4 centre wavelength open circuit microstrip line can be equivalent to one to ground electricity
Hold, and then the limit of Wilkinson power divider can be increased, and then widen its frequency band.
In one of the embodiments, microwave transmission branch road 11 includes the first trunk microstrip line 111 and the second trunk micro-strip
Line 112, microwave transmission branch road 12 includes the first trunk microstrip line 121 and the second trunk microstrip line 122.Microstrip line prolongation structure 20
One end be connected in the transmission channel between the first trunk microstrip line 111 and the second trunk microstrip line 112, the other end hang
It is empty；One end of microstrip line prolongation structure 21 is connected to the transmission between the first trunk microstrip line 121 and the second trunk microstrip line 122
On passage, the other end is hanging.
It is located at the second trunk microstrip line 112,122 on two microwave transmission branch roads 11,12 respectively respectively as two branch
The output port on road, and then will be exported by the microwave branch signal after two work(point.
Referring to Fig. 2, in one of the embodiments, the microstrip line prolongation structure 20 on microwave transmission branch road 11 includes parallel
The wall scroll microstrip line 203 set in microwave transmission direction and the two line structure identical micro-strips set perpendicular to microwave transmission direction
Microstrip line prolongation structure 21 on line branch, microwave transmission branch road 12 includes the wall scroll microstrip line 213 laterally set and longitudinal direction is set
The two line structure identical microstrip line branches put.Wall scroll microstrip line 203 is connected to the first trunk micro-strip of microwave transmission branch road 11
Between the trunk microstrip line 112 of line 111 and second, wall scroll microstrip line 213 is connected to the first trunk micro-strip of microwave transmission branch road 12
Between the trunk microstrip line 122 of line 121 and second.One end of 20 liang of line structure identical microstrip line branches of microstrip line prolongation structure point
Not Lian Jie wall scroll microstrip line 203 two ends, the other end is hanging, 21 liang of line structure identical microstrip line branches of microstrip line prolongation structure
One end connect the two ends of wall scroll microstrip line 213 respectively, the other end is hanging.
One bandpass filter of formation of microstrip line prolongation structure 20,21, can increase the limit of Wilkinson power divider, open up
Its wide frequency.Meanwhile, the microstrip line prolongation structure is made up of microstrip line, and each microstrip line is formed with dielectric layer, metal back layer respectively
Electric capacity, according to the charge-discharge characteristic of electric capacity, its small power consumption produced so that the Insertion Loss of the ultra wide band Wilkinson power divider is very
It is low, loss of the microwave in transmitting procedure is reduced, the transimission power of microwave is improved.
Further, the second microstrip line 202 and the first microstrip line 201, the second microstrip line 205 and the first microstrip line 204, the
The impedanoe ratio of two microstrip lines 212 and the first microstrip line 211, the second microstrip line 215 and the first microstrip line 214 is 2.25:1,
The microwave band that now ultra wide band Wilkinson power divider can pass through is most wide, and the impedanoe ratio is adjusted according to the actual requirements,
Desired frequency band width can be obtained.
Second microstrip line 202 is 1/4 centre wavelength, and in open-circuit condition, can be equivalent to one and arrive ground electric capacity, for
Equivalent to ground is shorted to for microwave signal, the first microstrip line 201 of series connection is also 1/4 centre wavelength, from the first microstrip line 201
One end see into equivalent to open circuit, so as to form a limit.
Referring to Fig. 3, Fig. 3 is that the port reflectance factor of ultra wide band Wilkinson power divider in an embodiment emulates ring in HFSS
Oscillogram under border.Abscissa represents frequency, and ordinate represents amplitude, and unit is decibel, and it is ultra wide band Wilkinson work(point
The input port of device and the reflectance factor of output port with frequency situation of change.Wherein, curve 31 represents input port reflection
The oscillogram of coefficient S (1,1), curve 32 represents the oscillogram of an output port reflectance factor S (2,2), and curve 33 represents another
Output port reflectance factor S (3.3) oscillogram.It can be seen that, the ultra wide band Wilkinson power divider is in 18GHz~40GHz
Frequency band in, its input port reflectance factor S (1,1) be less than -15dB, two output port reflectance factor S (2,2), S (3,3)
Less than -13.8dB.The reflectance factor of the ultra wide band Wilkinson power divider is small, reflects low in energy consumption, transimission power is high.
Referring to Fig. 4, Fig. 4 is the oscillogram of the output port Insertion Loss of ultra wide band Wilkinson power divider in an embodiment.It is horizontal
Coordinate representation frequency, ordinate represents amplitude, and unit is decibel, and it is two output ports of ultra wide band Wilkinson power divider
Insertion Loss S (2,1) and S (3,1) with frequency situation of change.It can be seen that, the ultra wide band Wilkinson power divider 18GHz~
In 40GHz frequency band, the Insertion Loss S (2,1) and S (3,1) of two output ports are less than 0.2dB.In two output ports of guarantee
In the case that Insertion Loss is less than 0.2dB, the manageable microwave frequency of the ultra wide band Wilkinson power divider can be widened to 2 frequencys multiplication,
40/18>2 frequencys multiplication.
Referring to Fig. 5, Fig. 5 is the phase diagram of the output port Insertion Loss of ultra wide band Wilkinson power divider in an embodiment.It is horizontal
Coordinate representation frequency, ordinate represents phase, and unit is degree, and it is two output ports of ultra wide band Wilkinson power divider
Insertion Loss S (2,1) and S (3,1) phase with frequency situation of change.It can be seen that, the ultra wide band Wilkinson power divider exists
In 18GHz~40GHz frequency band, the Insertion Loss phase of two output ports is basically identical so that two obtained after two work(are divided to
Road microwave branch signal phase is consistent, and work(point effect is good.
In one of the embodiments, microstrip line branch include connection microwave transmission branch road 11 the first microstrip line 201,
204, the first microstrip line 211,214 of connection microwave transmission branch road 12, the second microstrip line 202 being connected with the first microstrip line 201,
The second microstrip line 205 being connected with the first microstrip line 204, the second microstrip line 212, Yi Jiyu being connected with the first microstrip line 211
Second microstrip line 215 of the first microstrip line 214 connection, the other end of the second microstrip line 202,205,212,215 is hanging.
In one of the embodiments, the ultra wide band Wilkinson power divider also includes isolation resistance R, the isolation resistance
R one end connects first trunk microstrip line 111 is connected with the second trunk microstrip line 112 in a microwave transmission branch road 11 one
End, the other end of the isolation resistance R connects the first trunk microstrip line 121 and second described in another microwave transmission branch road 12
One end that trunk microstrip line 122 is connected.
Isolation resistance R can reduce the interference between two microwave transmission branch roads 11,12, specifically, isolation resistance R
Resistance be 100 Ω, according to its different sheet resistance of material can for 50 Ω/square, 60 Ω/square or other.
Referring to Fig. 6, Fig. 6 is the oscillogram of the output port isolation of ultra wide band Wilkinson power divider in an embodiment.
Abscissa represents frequency, and ordinate represents amplitude, and unit is decibel, and it is two output ends of ultra wide band Wilkinson power divider
Mouthful between isolation S (2,3) with frequency situation of change.It can be seen that, the ultra wide band Wilkinson power divider 18GHz~
In 40GHz frequency band, the isolation S (2,3) of two output ports is less than -10dB, interfering with each other small.
In one of the embodiments, the microstrip line of wall scroll micro-strip 203,213, first in microstrip line prolongation structure 20,21
201st, the length of the 204,211,214 and second microstrip line 202,205,212,215 is by the ultra wide band Wilkinson work(
Divide 1/4 centre wavelength of the microwave of device.The centre wavelength is the center frequency of the microwave by the ultra wide band Wilkinson power divider
The corresponding wavelength of rate.
Further, the resistance of wall scroll microstrip line 203,213 is 50 Ω.
Above-mentioned ultra wide band Wilkinson power divider, inserted on the microwave transmission branch road of traditional Wilkinson power divider by
The microstrip line prolongation structure of microstrip line composition, can increase the limit of the Wilkinson power divider, and then widen its frequency band.This is micro-
Strip line structure is including the wall scroll microstrip line with being set parallel to microwave transmission direction and perpendicular to the two of the setting of microwave transmission direction
Line structure identical microstrip line branch, forms a bandpass filter, and the microstrip line branch includes the first microstrip line being connected with each other
With the second microstrip line, the frequency bandwidth of the ultra wide band Wilkinson power divider can be adjusted by adjusting its resistance ratio, according to demand
Preferable bandwidth can be obtained by being adjusted.Simultaneously using the charge-discharge characteristic of electric capacity, its small power consumption produced so that the ultra-wide
Insertion Loss with Wilkinson power divider is very low, reduces loss of the microwave in transmitting procedure, improves the transimission power of microwave.
In addition, being provided with isolation circuit between two microwave transmission branch roads, it is possible to reduce the interference between two microwave transmission branch roads,
Improve the transmission quality of microwave.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of ultra wide band Wilkinson power divider, including dielectric layer, are attached to the signal metal layer of the dielectric layer side, and
It is attached to the metal back layer of the dielectric layer opposite side, it is characterised in that the signal metal layer includes：
Microwave transmission branch road, for microwave signal the output of multichannel microwave branch signal will to be divided into all the way；
Microstrip line prolongation structure, is made up of microstrip line, and one end of the microstrip line prolongation structure is connected to the microwave transmission branch
Lu Shang, the other end is hanging, and the length of the microstrip line is in 1/4 of the microwave by the ultra wide band Wilkinson power divider
Cardiac wave is long, the limit for increasing Wilkinson power divider.
2. ultra wide band Wilkinson power divider according to claim 1, it is characterised in that the microwave transmission branch road includes
First trunk microstrip line and the second trunk microstrip line, one end of the microstrip line prolongation structure are connected to the first trunk micro-strip
In transmission channel between line and the second trunk microstrip line, the other end is hanging.
3. ultra wide band Wilkinson power divider according to claim 2, it is characterised in that the microstrip line prolongation structure bag
Include the wall scroll microstrip line set parallel to microwave transmission direction and the two line structure identicals set perpendicular to microwave transmission direction
Microstrip line branch, the wall scroll microstrip line is connected between the first trunk microstrip line and the second trunk microstrip line, micro- per road
One end with line branch connects one end of the wall scroll microstrip line respectively, and the other end is hanging.
4. ultra wide band Wilkinson power divider according to claim 3, it is characterised in that the microstrip line branch includes the
One microstrip line and the second microstrip line, one end of first microstrip line connect one end of the wall scroll microstrip line, and described first is micro-
The other end with line connects one end of second microstrip line, and the other end of second microstrip line is hanging.
5. ultra wide band Wilkinson power divider according to claim 4, it is characterised in that second microstrip line with it is described
The impedanoe ratio of first microstrip line is 2.25:1.
6. ultra wide band Wilkinson power divider according to claim 5, it is characterised in that the microwave transmission branch road has two
The microstrip line prolongation structure is provided with bar, every microwave transmission branch road.
7. ultra wide band Wilkinson power divider according to claim 6, it is characterised in that also including isolation resistance, described
One end of isolation resistance connects one end that the first trunk microstrip line is connected with wall scroll microstrip line described in a microwave transmission branch road,
The other end of the isolation resistance connects the first trunk microstrip line described in another microwave transmission branch road and connected with wall scroll microstrip line
The one end connect.
8. ultra wide band Wilkinson power divider according to claim 1, it is characterised in that the signal metal layer and metal
The material of bottom is gold.
9. ultra wide band Wilkinson power divider according to claim 3, it is characterised in that the resistance of the wall scroll microstrip line
For 50 Ω.
10. ultra wide band Wilkinson power divider according to claim 7, it is characterised in that the resistance of the isolation resistance
For 100 Ω.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710225684.9A CN107086345B (en) | 2017-04-07 | 2017-04-07 | Ultra wide band wilkinson power divider |
| PCT/CN2018/076270 WO2018184425A1 (en) | 2017-04-07 | 2018-02-11 | Ultra-wideband wilkinson power divider |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710225684.9A CN107086345B (en) | 2017-04-07 | 2017-04-07 | Ultra wide band wilkinson power divider |
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| CN107086345B CN107086345B (en) | 2018-11-30 |
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| CN107681242A (en) * | 2017-11-10 | 2018-02-09 | 深圳市华讯方舟微电子科技有限公司 | Wilkinson power divider |
| CN108183301A (en) * | 2017-12-12 | 2018-06-19 | 吴云飞 | A kind of miniaturization Wilkinson power divider with low-pass filtering |
| WO2018184425A1 (en) * | 2017-04-07 | 2018-10-11 | 深圳市华讯方舟微电子科技有限公司 | Ultra-wideband wilkinson power divider |
| WO2018218995A1 (en) * | 2017-05-27 | 2018-12-06 | 深圳市华讯方舟微电子科技有限公司 | Single-section wilkinson power divider |
| CN109728393A (en) * | 2018-08-07 | 2019-05-07 | 中国航空工业集团公司雷华电子技术研究所 | A kind of racemosus section power splitter |
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| WO2018184425A1 (en) | 2018-10-11 |
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