CN208352505U - A kind of novel one point of four road microstrip power divider - Google Patents
A kind of novel one point of four road microstrip power divider Download PDFInfo
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- CN208352505U CN208352505U CN201821005562.5U CN201821005562U CN208352505U CN 208352505 U CN208352505 U CN 208352505U CN 201821005562 U CN201821005562 U CN 201821005562U CN 208352505 U CN208352505 U CN 208352505U
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- transmission line
- branch transport
- point
- main transmission
- medium substrate
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Abstract
The utility model discloses a kind of novel one point of four road microstrip power dividers, it include medium substrate, the back side of medium substrate is floor, front is one point of four microstrip transmission line, input port is equipped in the positive front end of medium substrate, two pairs of symmetrical prime output ports and rear class output port are respectively equipped in the positive left and right sides of medium substrate, one point of four microstrip transmission line includes a main transmission line, main transmission line enters from input port, the two multi-branch transport lines one in left and right are equipped at input port on main transmission line, the end of two multi-branch transport lines one is separately connected two symmetrical prime output ports, the two multi-branch transport lines two in left and right are equipped in the rear end of main transmission line, the end of the two multi-branch transport lines two in left and right is separately connected two symmetrical rear class output ports.The utility model has high broadband, design simple, and compact-sized, the good advantage of isolation has very high engineering practical value.
Description
Technical field
The utility model relates to microwave technical fields, more particularly to a kind of novel one point of four road microstrip power divider.
Background technique
Microstrip power divider can realize distribution/merging of multi-channel electromagnetic signal, be function indispensable in RF IC
It can unit.In the occasion of less demanding to power capacity, microstrip line power splitter is because having light weight and cost is low, structure is simple etc.
Outstanding advantage is widely used in the fields such as mobile communication, aerospace, radar detection.Traditional microstrip power divider is such as answered extensively
Wilkinson power divider passes throughImpedance shift design, is expanded step by step, realizes one point of multi-path power divider.By load every
From resistance, the good isolation in port is realized.
But in middle low-frequency band, expand will lead to that microstrip line cabling is too long, and microstrip lines are unfavorable for collecting step by step
At.Especially in loaded antenna array, power splitter design can be extremely complex.
Utility model content
The utility model aim is exactly in order to make up the defect of prior art, to provide a kind of novel one point of four tunnel micro-strip function point
Device.
The utility model is achieved through the following technical solutions:
A kind of novel one point of four road microstrip power divider includes medium substrate, and the back side of medium substrate is floor, and front is
One point of four microstrip transmission line is equipped with input port in the positive front end of medium substrate, in the positive left and right sides point of medium substrate
Not She You two pairs of symmetrical prime output ports and rear class output port, one point of four microstrip transmission line includes one
Main transmission line, main transmission line enter from input port, are equipped with Liang Ge branch in left and right at input port on main transmission line and pass
Defeated line one, the end of two multi-branch transport lines one is separately connected two symmetrical prime output ports, after main transmission line
End is equipped with the two multi-branch transport lines two in left and right, and the end of the two multi-branch transport lines two in left and right is separately connected two symmetrical rear classes
Output port.Prime output port and rear class output port phase phase difference 180 degree.
The medium substrate with a thickness of 1.6mm.
The impedance of the main transmission line is 50 Ω, and multi-branch transport line one is identical with the size of multi-branch transport line two, impedance
It is 100 Ω.
The width of the main transmission line is 3.2mm, and the spacing between multi-branch transport line one and multi-branch transport line two is
The width of 32.6mm, multi-branch transport line one and multi-branch transport line two is 0.6mm, and length is 16.6mm.
Transmission line includes a main transmission line and four same size multi-branch transport lines, and branch line connects four output ends
Mouthful, one point of four power distribution is realized by main transmission line one end input port.Main transmission line characteristic impedance is 50 Ω, and branch line is special
Property impedance be 100 Ω, pass throughImpedance is converted into main transmission line.Input, the equal normalized impedance of output port are 50 Ω, wherein before
Grade output port and rear class output port are spaced about 1/2 wavelength on main transmission line, and rear class port phase is made to lag 180 degree,
Micro-strip line impedance has simultaneouslyRepeatability, so rear class port and backing port have a same impedance transformation characteristic, four
Output port is connected in parallel to input port by impedance variations, realizes good impedance matching, obtains good impedance bandwidth characteristic.
Because each port Impedance of the power splitter is 50 Ω, can grade be coupled to the multistage of other microstrip power dividers such as Wilkinson power divider and set
In meter.
The utility model has the advantages that: the utility model has high broadband, design simple, and compact-sized, isolation is good
Advantage has very high engineering practical value.
Detailed description of the invention
Fig. 1 is the utility model structure diagram.
Fig. 2 is the utility model structure S parameter analogous diagram.
Fig. 3 is the utility model structure isolation analogous diagram.
Fig. 4 is the utility model structure phase distribution map.
Specific embodiment
As shown in Figure 1, a kind of novel one point of four road microstrip power divider, includes medium substrate 1, the back side of medium substrate is
Floor, front are one point of four microstrip transmission line, input port 2 are equipped in the positive front end of medium substrate 1, in medium substrate 1
Positive left and right sides is respectively equipped with two pairs of symmetrical prime output ports 3 and rear class output port 4, one point of four micro-strip
Transmission line includes a main transmission line 5, and main transmission line 5 enters from input port 2, close to input port 2 on main transmission line 5
Place is equipped with the two multi-branch transport lines 1 in left and right, and it is defeated that the end of two multi-branch transport lines 1 is separately connected two symmetrical primes
Exit port 3 is equipped with the two multi-branch transport lines 27 in left and right, the end of the two multi-branch transport lines 27 in left and right in the rear end of main transmission line 5
Portion is separately connected two symmetrical rear class output ports 4.4 phase phase difference 180 of prime output port 3 and rear class output port
Degree.
The medium substrate 1 with a thickness of 1.6mm.
The impedance of the main transmission line 5 is 50 Ω, and multi-branch transport line 1 is identical with the size of multi-branch transport line 27, resistance
Anti- is 100 Ω.
The width of the main transmission line 5 is 3.2mm, and the spacing between multi-branch transport line 1 and multi-branch transport line 27 is
The width of 32.6mm, multi-branch transport line 1 and multi-branch transport line 27 is 0.6mm, and length is 16.6mm.
Work is 2.45GHz in centre frequency.Including the FR4 medium substrate 1 with a thickness of 1.6mm, wherein the back side is floor,
Front is one point of four microstrip transmission line.Main transmission line from input port by a bit of transmission line m (length is not fixed), before separating
Grade output port.Then it is spaced about half wavelength h, then separates rear class output port.Branch line uses same size length about 1/4
The microstrip line of wavelength w guarantees each output port amplitude coincidence.Rear class port lags half wavelength, and amplitude differs 180 degree.
The width of microstrip line can be estimated according to characteristic impedance by txline software.Optimized again by HFSS, obtains 50
Ω main transmission line width is 3.2mm, and 100 Ω branch line widths are 0.6mm.
Because using FR4 medium substrate dielectric constant for εr=4.4, so losing wavelength about 1/2 in dielectric-slab.Pass through
HFSS simulation optimization, obtaining w is 16.6mm, h 32.6mm.
It is emulated using HFSS simulation software, simulation result is as shown in Fig. 2-4.Simulation result shows that the power splitter can be real
Existing good function is intrinsic, and in the case where not loading isolation resistance, each interport isolation is respectively less than -11dB, has met use
It is required that.If can continue to load isolation resistance to improve interport isolation in the very high microwave circuit of insulated degree requirement.
Claims (4)
1. a kind of novel one point of four road microstrip power divider, it is characterised in that: include medium substrate, the back side of medium substrate is gold
Belong to coating floor, front is one point of four microstrip transmission line, input port is equipped in the positive front end of medium substrate, in medium substrate
Positive left and right sides be respectively equipped with two pairs of symmetrical prime output ports and rear class output port, one point of four micro-strip
Transmission line includes a main transmission line, and main transmission line enters from input port, is set at input port on main transmission line
There are the two multi-branch transport lines one in left and right, the end of two multi-branch transport lines one is separately connected two symmetrical prime output ends
Mouthful, the two multi-branch transport lines two in left and right are equipped in the rear end of main transmission line, the end of the two multi-branch transport lines two in left and right connects respectively
Connect two symmetrical rear class output ports.
2. the novel one point of four road microstrip power divider of one kind according to claim 1, it is characterised in that: the medium substrate
With a thickness of 1.6mm.
3. the novel one point of four road microstrip power divider of one kind according to claim 1, it is characterised in that: the main transmission line
Impedance be 50 Ω, multi-branch transport line one is identical with the size of multi-branch transport line two, and impedance is 100 Ω.
4. the novel one point of four road microstrip power divider of one kind according to claim 3, it is characterised in that: the main transmission line
Width be 3.2mm, spacing between multi-branch transport line one and multi-branch transport line two is 32.6mm, multi-branch transport line one and branch
The width of transmission line two is 0.6mm, and length is 16.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821005562.5U CN208352505U (en) | 2018-06-28 | 2018-06-28 | A kind of novel one point of four road microstrip power divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821005562.5U CN208352505U (en) | 2018-06-28 | 2018-06-28 | A kind of novel one point of four road microstrip power divider |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208352505U true CN208352505U (en) | 2019-01-08 |
Family
ID=64882182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821005562.5U Expired - Fee Related CN208352505U (en) | 2018-06-28 | 2018-06-28 | A kind of novel one point of four road microstrip power divider |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208352505U (en) |
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2018
- 2018-06-28 CN CN201821005562.5U patent/CN208352505U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190108 Termination date: 20190628 |
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| CF01 | Termination of patent right due to non-payment of annual fee |