CN102013542A - Wilkinson power divider based on left-handed microstrip line - Google Patents
Wilkinson power divider based on left-handed microstrip line Download PDFInfo
- Publication number
- CN102013542A CN102013542A CN2010102118368A CN201010211836A CN102013542A CN 102013542 A CN102013542 A CN 102013542A CN 2010102118368 A CN2010102118368 A CN 2010102118368A CN 201010211836 A CN201010211836 A CN 201010211836A CN 102013542 A CN102013542 A CN 102013542A
- Authority
- CN
- China
- Prior art keywords
- transmission line
- power divider
- wilkinson power
- microstrip line
- length
- Prior art date
- 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.)
- Pending
Links
Landscapes
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
The invention discloses a Wilkinson power divider based on a left-handed microstrip line. The Wilkinson power divider is characterized in that the input end and the output end are right-handed transmission lines in the length of lambda/8; the Y-branch arm adopts a left-handed transmission line in the length of lambda/4, wherein the lambda is the central operating wavelength; and the left-handed transmission line is realized by adopting a total set of L-C elements, i.e. the unit structure comprises a series capacitor CL and a parallel inductor LL. The invention has the advantages that the isolation bandwidth is added by approximate 50 percent to be 1.5 f0 and the size is smaller than that of a traditional power divider.
Description
Technical field
The present invention relates to the power splitter in a kind of microwave communication, particularly a kind of Wilkinson power splitter based on left-hand microstrip line.
Background technology
Microwave power distributor is to be used in the microwave circuit input signal power demultiplexing output critical function device, is one of core devices of forming microwave and wireless network.Can be divided into two kinds of simple power splitter and isolation power dividers according to electric circuit characteristic.Usually do not settle isolation resistance between the simple power splitter output, its advantage is more easily to realize the multichannel distribution, can obtain higher input and output isolation at bigger bandwidth range.Because the type power splitter adopts more piece impedance conversion line to come spread bandwidth mostly, its size is bigger usually, is difficult for realizing integrated.And lacking isolation between its output port, performance and application scenario are all limited to.Nineteen sixty, Wilkinson has proposed isolation power divider first, is also referred to as the Wilkinson power splitter, and its advantage is to introduce isolation resistance makes output obtain isolation performance preferably between each port, thereby the scope of application is wider.Its major defect is there is not enough big isolation bandwidth.
Tradition Wilkinson power splitter is introduced isolation resistance R between output port, when an output because of reason generation reflex times such as impedance mismatchings, reflection power arrives by left hand transmission line and two branch roads of isolation resistance between the two paths of signals of another output and exists the π phase difference to cancel out each other, thereby reaches the purpose of isolating output.But, adopt λ/8 right hand transmission lines as a minute support arm, when the bandwidth travel frequency changed, the phase difference of output reflected signal no longer was π but with the frequency change linear deflection.When side-play amount is big, thereby reflection power is no longer cancelled out each other the bandwidth of isolation signals is restricted.
Summary of the invention
Technical problem to be solved by this invention is that a kind of isolation bandwidth and little Wilkinson power splitter based on left-hand microstrip line of volume of increasing will be provided.
In order to solve above technical problem, the invention provides a kind of Wilkinson power splitter based on left-hand microstrip line, it is characterized in that: input and output are right hand transmission line, and length is λ/8; Its Y divides support arm to adopt left hand transmission line, and length is λ/4, and λ is the central task wavelength, and left hand transmission line adopts general collection L-C element to realize that promptly cellular construction is made of series capacitance CL and shunt inductance LL.
The present invention proposes to replace original right hand transmission line with left hand transmission line, and when frequency change, the phase difference of reflected signal is less with the non-linear skew of frequency change, therefore effectively reduces the restriction of traditional power splitter to bandwidth.
Superior effect of the present invention is:
1) traditional Wilkinson power splitter its-the 1OdB isolation bandwidth is generally in the scope of f0, it is nearly 50% that power splitter isolation bandwidth of the present invention increases, and is 1.5f0;
2) power splitter size of the present invention is littler than traditional power splitter: the Y branch arm length of power splitter of the present invention is about 20.4mm, and traditional Wilkinson power splitter uses 1/4 wavelength transmission line, and its length surpasses 40mm.
Description of drawings
Fig. 1 is a functional-block diagram of the present invention.
Embodiment
See also shown in the accompanying drawing, the invention will be further described.
As shown in Figure 1, the invention provides a kind of Wilkinson power splitter based on left-hand microstrip line, it is characterized in that: input and output are right hand transmission line, and length is λ/8; Its Y divides support arm to adopt left hand transmission line, and length is λ/4, and λ is the central task wavelength, and left hand transmission line adopts general collection L-C element to realize that promptly cellular construction is made of series capacitance CL and shunt inductance LL.
Select the baseplate material of FR4 epoxy resin (dielectric constant 4.4) as power splitter of the present invention.Substrate thickness is 1.5mm, and the metallic conductor layer thickness is 0.035mm, and conductivity is 5.88 * 107S/m.In the manufacturing process of device, λ/8 right hand transmission lines all adopt microstrip line to realize, λ/4 left hand transmission lines are then realized by lump L-C element.The microstrip line characteristic impedance is Z0=50 Ω.Central task frequency f=the 0.9GHz of device.According to the homogeneous medium theory, the phase shift β Δ z of single transmission line unit is much smaller than 2 π.When | φ |=pi/2, get β Δ z=π/12.When the transmission line unit is made as N=6, can obtain CL=9.5527pF, LL=47.763nH.
Claims (1)
1. Wilkinson power splitter based on left-hand microstrip line, it is characterized in that: input and output are right hand transmission line, and length is λ/8; Its Y divides support arm to adopt left hand transmission line, and length is λ/4, and λ is the central task wavelength, and left hand transmission line adopts general collection L-C element to realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102118368A CN102013542A (en) | 2010-06-29 | 2010-06-29 | Wilkinson power divider based on left-handed microstrip line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102118368A CN102013542A (en) | 2010-06-29 | 2010-06-29 | Wilkinson power divider based on left-handed microstrip line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102013542A true CN102013542A (en) | 2011-04-13 |
Family
ID=43843620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102118368A Pending CN102013542A (en) | 2010-06-29 | 2010-06-29 | Wilkinson power divider based on left-handed microstrip line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102013542A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016165571A1 (en) * | 2015-04-16 | 2016-10-20 | 通用电气公司 | Magnetic resonance imaging device, power amplifier module and power combiner |
| CN108767408A (en) * | 2018-07-27 | 2018-11-06 | 辽宁普天数码股份有限公司 | A kind of subminaturization Wilkinson power divider |
-
2010
- 2010-06-29 CN CN2010102118368A patent/CN102013542A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016165571A1 (en) * | 2015-04-16 | 2016-10-20 | 通用电气公司 | Magnetic resonance imaging device, power amplifier module and power combiner |
| CN106154191A (en) * | 2015-04-16 | 2016-11-23 | 通用电气公司 | MR imaging apparatus, power amplifier module and power combiner |
| US10833387B2 (en) | 2015-04-16 | 2020-11-10 | GE Precision Healthcare LLC | Magnetic resonance imaging device, power amplifier module and power combiner |
| CN108767408A (en) * | 2018-07-27 | 2018-11-06 | 辽宁普天数码股份有限公司 | A kind of subminaturization Wilkinson power divider |
| CN108767408B (en) * | 2018-07-27 | 2023-09-19 | 辽宁普天数码股份有限公司 | Microminiaturized wilkinson power divider |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103700917B (en) | There is the Gysel merit filter-divider of high merit proportion by subtraction | |
| KR20110130387A (en) | Multiple pole multiple throw switch device based on composite right and left handed metamaterial structures | |
| Tae et al. | Reconfigurable 1$\times $4 Power Divider With Switched Impedance Matching Circuits | |
| CN100546097C (en) | Based on arbitrary dual-frequency power divider of composite right/left-handed transmission line and preparation method thereof | |
| CN103199323B (en) | Dual-layer dual-mode and dual-passband band-pass filter | |
| CN105655679A (en) | Quasi-planar high-isolation multi-path power divider | |
| CN102013542A (en) | Wilkinson power divider based on left-handed microstrip line | |
| CN201749929U (en) | Wilkinson power divider based on left-hand microstrip lines | |
| CN101662062A (en) | Dual-band unequal power distributor containing selectable isolating structure | |
| CN203644921U (en) | Gysel power dividing filter with high power dividing ratio | |
| CN205303640U (en) | Branch wilkinson power divider such as dual -frenquency based on slow wave structure | |
| CN104466333A (en) | Three-port high isolation equal division power distributor integrated with filtering function | |
| CN104319450A (en) | Ultra wide band bridge based on thick film manufacturing technology | |
| CN101621148B (en) | Circulator | |
| CN201174418Y (en) | Half-modular chip integrated waveguide single layered stereo power distributor | |
| KR20090121898A (en) | Tunable wilkinson power divider combiner | |
| CN103384022A (en) | Implement method for plane micro-strip linear high-distribution ratio unequal power divider | |
| CN201017976Y (en) | Broadband balun based on right-left hand composite transmission lines | |
| CN1731623A (en) | Microwave power splitter based on left-right-hand composite transmission line | |
| CN202308257U (en) | Power divider integrated with double-frequency band-pass filter | |
| CN104617366A (en) | Quasi-plane high-isolation four-way power divider based on capacitance compensation technology | |
| CN107732396A (en) | A kind of power splitter based on substrate integration wave-guide | |
| CN204290939U (en) | A kind of six bit digital delay lines based on three-dimensional ceramic substrate | |
| CN205303641U (en) | Branch wilkinson power divider such as dual -frenquency | |
| CN201438496U (en) | circulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110413 |