CN101030665A - Differential phase shifter based on artificial electromagnetic composite transmission line - Google Patents
Differential phase shifter based on artificial electromagnetic composite transmission line Download PDFInfo
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- CN101030665A CN101030665A CN 200710067717 CN200710067717A CN101030665A CN 101030665 A CN101030665 A CN 101030665A CN 200710067717 CN200710067717 CN 200710067717 CN 200710067717 A CN200710067717 A CN 200710067717A CN 101030665 A CN101030665 A CN 101030665A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 60
- 239000002131 composite material Substances 0.000 title claims description 33
- 230000010363 phase shift Effects 0.000 claims abstract description 38
- 239000003989 dielectric material Substances 0.000 claims description 7
- 238000002474 experimental method Methods 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 3
- 239000003990 capacitor Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
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- 238000004891 communication Methods 0.000 description 2
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- 230000015572 biosynthetic process Effects 0.000 description 1
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Abstract
The invention is concerned with differential phase-shift equipment based on manpower electromagnetism structure compound transmission line. The equipment is made of one microwave transmission line prepared with even microwave medium and n compound transmission lines of manpower electromagnetism structure appositely. Each compound transmission line is made of m manpower electromagnetism structure unit in series. And the manpower electromagnetism structure unit is a T shape circuit made of two connecting impedance units and the admittance unit connecting with the joint part of the two impedance units, or of a impedance unit and a admittance unit in series. This differential phase-shift equipment has wide work band and low inserting wastage and random degree. Its structure is easy and compact with low cost by adopting inductance and capacitance. The experiment shows that this differential phase-shift equipment has well capability during a wide range to band.
Description
Technical field
The present invention relates to a kind of differential phase shift device, especially based on the differential phase shift device of manual electromagnetic structure composite transmission line.
Background technology
The differential phase shift device is one of multiport device important in the microwave network, its function is to given synchronous two-way or multichannel input signal, each bars transmission branch road (arm) by phase-shifter carries out phase shift respectively, thereby has fixing phase difference between the signal that makes each road export.At present the differential phase shift device is widely used in the middle of microwave such as microwave mixer network and phased array antenna and the radio-frequency apparatus, in satellite communication, in microwave, the millimeter wave wireless communication field good application is arranged.
The differential phase shift device of current practicality has various ways, having plenty of by each bars transfer arm adopts the conventional transmission line of different length to obtain phase difference, so-called conventional transmission line is the transmission line that even microwave dielectric material is made, and what have then is by adopting low pass or high pass filter to constitute the signal transfer arm.These phase-shifters all exist working band narrow, complex structure, shortcoming such as size is big.Also have a kind of many putting forward of application, utilize the Xie Fuman phase-shifter that has the logical coupling two-wire of a termination to constitute the signal transfer arm by American scholar Xie Fuman (Schiffman).This phase-shifter also can obtain bigger difference bandwidth, but because the existence of coupling two-wire obtains less insertion loss thereby need well-designedly reach impedance matching, making relative complex and size own are bigger.
Working band inserts loss, size, and structural complexity is design and makes the factor that a good differential phase shift device must be considered.In order to improve the performance of differential phase shift device, the size of reduction of device, many scholars have released certain methods basic Xie Fuman phase-shifter have been improved, such as, the joint number, the introducing defective aground plane structure that increase the coupling two-wire wait and strengthen coupling, increase bandwidth or the like, but still can not solve some subject matters that exist in the present design.
Summary of the invention
The objective of the invention is for overcoming the working band that has the existence of differential phase shift device now wide inadequately, loss is big, complex structure, the size deficiencies such as inconvenience of producing extensively provide a kind of broadband, low Insertion Loss, compact dimensions, the differential phase shift device based on the manual electromagnetic structure composite transmission line that cost is low.
The composite transmission line of being made by the microwave transmission line and the n bar manual electromagnetic structure of an even microwave dielectric material making based on the differential phase shift device of manual electromagnetic structure composite transmission line of the present invention constitutes side by side, n=1,2, positive integer, the composite transmission line of every manual electromagnetic structure making is formed by m manual electromagnetic structure units in series, m=1,2 ... positive integer.
Manual electromagnetic structure unit among the present invention can be the T shape circuit that is made of two continuous impedance units and the admittance unit that is connected two impedance unit contact places, wherein, impedance unit is made of first inductance and first capacitances in series, and the admittance unit is made of second inductance and second capacitances in series.
Manual electromagnetic structure unit or also can form by an impedance unit and an admittance units in series, wherein, impedance unit is made of the 3rd inductance and the 3rd capacitances in series, and the admittance unit is made of the 4th inductance and the 4th capacitances in series.
Electric capacity in the above-mentioned manual electromagnetic structure unit and inductance can be the electric capacity and the inductance of lump type, or the electric capacity of half lump type and inductance, or distributed electric capacity and inductance.
The microwave transmission line that said even microwave dielectric material is made among the present invention can adopt microstrip line, suspended mictrostrip, coupled microstrip line, co-planar waveguide, coplane microstrip line, coaxial line, rectangular waveguide or circular waveguide.
The differential phase shift device of manual electromagnetic structure composite transmission line of the present invention has the following advantages: can obtain very wide working band, low insertion loss, the differential phase shift of the number of degrees arbitrarily.Adopt elements such as inductance, electric capacity simultaneously, simple in structure, compact dimensions, cost of manufacture is low.Experiment shows that differential phase shift device of the present invention has good performance in the broad frequency range very much.
Description of drawings
Fig. 1 is based on the formation schematic diagram of the differential phase shift device of manual electromagnetic structure composite transmission line;
Fig. 2 is the schematic diagram of a kind of manual electromagnetic structure unit;
Fig. 3 is the schematic diagram of another kind of manual electromagnetic structure unit;
Fig. 4 is the phase response schematic diagram of microwave transmission line and manual electromagnetic structure composite transmission line;
Fig. 5 is the transfer curve schematic diagram of manual electromagnetic structure composite transmission line;
Fig. 6 is the phase difference schematic diagram behind signal process microwave transmission line and the manual electromagnetic structure composite transmission line.
Embodiment
Further specify the present invention below in conjunction with accompanying drawing.
With reference to Fig. 1, the composite transmission line of being made by the microwave transmission line 1 and the n bar manual electromagnetic structure of an even microwave dielectric material making based on the differential phase shift device of manual electromagnetic structure composite transmission line 2 of the present invention constitutes side by side, n=1,2, positive integer, the composite transmission line of every manual electromagnetic structure making forms m=1 by m manual electromagnetic structure units in series, 2 ... positive integer.
The manual electromagnetic structure unit can be as shown in Figure 2, by two continuous impedance unit Z be connected the T shape circuit that the admittance unit G at two impedance unit Z contact places constitutes, wherein, impedance unit Z is made of first inductance L 1 and 1 series connection of first capacitor C, and admittance unit G is made of second inductance L 2 and 2 series connection of second capacitor C.
Manual electromagnetic structure unit or also can be as shown in Figure 3, be in series by an impedance unit Z and an admittance unit G, wherein, impedance unit Z is made of the 3rd inductance L 3 and 3 series connection of the 3rd capacitor C, and admittance unit G is made of the 4th inductance L 4 and 4 series connection of the 4th capacitor C.
The microwave transmission line that said even microwave dielectric material is made can adopt microstrip line, suspended mictrostrip, coupled microstrip line, co-planar waveguide, coplane microstrip line, coaxial line, rectangular waveguide or circular waveguide.The propagation constant of this traditional microwave transmission line is β, and electrical length is θ.
If: the signal input port of microwave transmission line is a port one, the signal output port of microwave transmission line is a port 2, the signal input port of the composite transmission line that manual electromagnetic structure is made is port (2n+1), and the signal output port of the composite transmission line that manual electromagnetic structure is made is port 2 (n+1).
Input signal is defined as P through the phase shift that obtains behind the microwave transmission line
0, be defined as P respectively through the phase shift that obtains behind other manual electromagnetic structure composite transmission lines
1, P
2..., P
n, the phase shift P of input signal after then through the i transmission lines
iWith through the phase shift P behind the j transmission lines
jBetween difference be defined as differential phase shift Δ P
Ij(i, j=1,2 ..., n), promptly
By to microwave transmission line options suitable propagation constant β and electrical length θ, the manual electromagnetic structure composite transmission line is selected suitable unit number and suitable electric capacity, inductive component values, can design flexible go out the high-performance differential phase shift device that in very wide frequency band range, has the fixed phase drift difference.
Design example based on the differential phase shift device of manual electromagnetic structure composite transmission line: design two-way differential phase shift devices that have 90 degree phase shift difference in the 8GHz scope at 4GHz.The differential phase shift device is made of side by side the composite transmission line of a microwave transmission line and a manual electromagnetic structure making, and wherein the composite transmission line of manual electromagnetic structure making adopts the construction unit of Fig. 3 to realize.
Consider factors such as loss, selecting the number of manual electromagnetic structure unit is 6, the three inductance L 3=0.43nH, the 3rd capacitor C 3=3.6pF, the 4th inductance L 4=2.3nH and the 4th capacitor C 4=0.07pF select propagation constant β=1 of microwave transmission line, electrical length θ=25.83 °/GHz.The phase response of signal process microwave transmission line and manual electromagnetic structure composite transmission line as shown in Figure 4.In whole working frequency range, have very little insertion loss during signal process manual electromagnetic structure composite transmission line, its transfer curve is as shown in Figure 5.Signal through the differential phase shift behind microwave transmission line and two branch roads of manual electromagnetic structure composite transmission line as shown in Figure 6, as seen from the figure, in working frequency range, this differential phase shift remains at about 90 °, fluctuation is no more than 5 ° up and down.
Claims (6)
1. based on the differential phase shift device of manual electromagnetic structure composite transmission line, it is characterized in that the composite transmission line (2) that it is made by the microwave transmission line (1) and the n bar manual electromagnetic structure of an even microwave dielectric material making constitutes side by side, n=1,2, positive integer, the composite transmission line of every manual electromagnetic structure making is in series m=1 by m manual electromagnetic structure unit (3), 2 ... positive integer.
2. the differential phase shift device based on the manual electromagnetic structure composite transmission line according to claim 1, it is characterized in that said manual electromagnetic structure unit is by two continuous impedance units (Z) and is connected the T shape circuit that the admittance unit (G) at two impedance units (Z) contact place constitutes, wherein, impedance unit (Z) is made of first inductance (L1) and first electric capacity (C1) series connection, and admittance unit (G) is made of second inductance (L2) and second electric capacity (C2) series connection.
3. the differential phase shift device based on the manual electromagnetic structure composite transmission line according to claim 2, it is characterized in that said electric capacity and inductance are the electric capacity and the inductance of lump type, or the electric capacity of half lump type and inductance, or distributed electric capacity and inductance.
4. the differential phase shift device based on the manual electromagnetic structure composite transmission line according to claim 1, it is characterized in that said manual electromagnetic structure unit is to be in series by an impedance unit (Z) and an admittance unit (G), wherein, impedance unit (Z) is made of the 3rd inductance (L3) and the 3rd electric capacity (C3) series connection, and admittance unit (G) is made of the 4th inductance (L4) and the 4th electric capacity (C4) series connection.
5. the differential phase shift device based on the manual electromagnetic structure composite transmission line according to claim 4, it is characterized in that said electric capacity and inductance are the electric capacity and the inductance of lump type, or the electric capacity of half lump type and inductance, or distributed electric capacity and inductance.
6. the differential phase shift device based on the manual electromagnetic structure composite transmission line according to claim 1, it is characterized in that the microwave transmission line that said even microwave dielectric material is made is a microstrip line, suspended mictrostrip, coupled microstrip line, co-planar waveguide, coplane microstrip line, coaxial line, rectangular waveguide or circular waveguide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100677178A CN100466371C (en) | 2007-03-20 | 2007-03-20 | Differential phase shifter based on artificial electromagnetic composite transmission line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100677178A CN100466371C (en) | 2007-03-20 | 2007-03-20 | Differential phase shifter based on artificial electromagnetic composite transmission line |
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| Publication Number | Publication Date |
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| CN101030665A true CN101030665A (en) | 2007-09-05 |
| CN100466371C CN100466371C (en) | 2009-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100677178A Expired - Fee Related CN100466371C (en) | 2007-03-20 | 2007-03-20 | Differential phase shifter based on artificial electromagnetic composite transmission line |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107386A (en) * | 2011-09-29 | 2013-05-15 | 深圳光启高等理工研究院 | Metamaterial phase shifter |
| CN104577263A (en) * | 2015-01-16 | 2015-04-29 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Novel multi-channel broadband differential phase shifter based on coupled line structure and design method of novel multi-channel broadband differential phase shifter |
| CN110970693A (en) * | 2018-09-28 | 2020-04-07 | 富华科精密工业（深圳）有限公司 | Broadband phase shifter and electronic device comprising same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5760661A (en) * | 1996-07-11 | 1998-06-02 | Northrop Grumman Corporation | Variable phase shifter using an array of varactor diodes for uniform transmission line loading |
| GB0216048D0 (en) * | 2002-07-11 | 2002-08-21 | Sigma Wireless Technologies Lt | Phase shifter for antenna |
| KR100538822B1 (en) * | 2003-05-27 | 2005-12-23 | 한국전자통신연구원 | Broadband Phase Shifter Using a Coupled Line and Parallel Open/Short Stubs |
-
2007
- 2007-03-20 CN CNB2007100677178A patent/CN100466371C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107386A (en) * | 2011-09-29 | 2013-05-15 | 深圳光启高等理工研究院 | Metamaterial phase shifter |
| CN103107386B (en) * | 2011-09-29 | 2016-01-13 | 深圳光启高等理工研究院 | Metamaterial phase shifter |
| CN104577263A (en) * | 2015-01-16 | 2015-04-29 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Novel multi-channel broadband differential phase shifter based on coupled line structure and design method of novel multi-channel broadband differential phase shifter |
| CN110970693A (en) * | 2018-09-28 | 2020-04-07 | 富华科精密工业（深圳）有限公司 | Broadband phase shifter and electronic device comprising same |
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| Publication number | Publication date |
|---|---|
| CN100466371C (en) | 2009-03-04 |
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