CN102195613B - Wideband zero phase shifter provided with transmission line with negative refractive index - Google Patents
Wideband zero phase shifter provided with transmission line with negative refractive index Download PDFInfo
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- CN102195613B CN102195613B CN201110077005.0A CN201110077005A CN102195613B CN 102195613 B CN102195613 B CN 102195613B CN 201110077005 A CN201110077005 A CN 201110077005A CN 102195613 B CN102195613 B CN 102195613B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 45
- 239000003990 capacitor Substances 0.000 claims abstract description 14
- 238000003780 insertion Methods 0.000 abstract description 5
- 230000037431 insertion Effects 0.000 abstract description 5
- 230000010363 phase shift Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
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- 230000008878 coupling Effects 0.000 description 2
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- 238000012546 transfer Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
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Abstract
The invention relates to a novel wideband zero phase shifter provided with a transmission line with a negative refractive index. The conventional phase shifter is narrow in working frequency band and complicated in structure. The novel wideband zero phase shifter comprises an operational amplifier U1, an operational amplifier U2, an operational amplifier U3, an inductor L1, an inductor L2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a microstrip transmission line TL1, a microstrip transmission line TL2 and an electrolytic capacitor C. The resistors R1 and R2, the amplifier U1 and the inductor L1 form an L1 series inductor; the resistors R5 and R6, the amplifier U3 and the inductor L2 form an L2 series inductor; and the resistors R3 and R4, the amplifier U2 and the capacitor C form a C parallel capacitor, and are connected with the microstrip transmission lines TL1 and TL2 in series to form the zero phase shifter. By the invention, low insertion loss and wide working frequency band can be achieved.
Description
Technical field
The invention belongs to microwave radio technical field, relate to a kind of Wideband zero degree phase-shifter based on thering is negative index transmission line.
Background technology
Zero degree phase-shifter is one of device important in microwave and radio frequency, zero degree phase-shifter is widely used in Zero-order resonant antenna and cascade power splitter at present, in the middle of the microwaves such as microwave mixer network and phased array antenna and radio-frequency apparatus, in satellite communication, microwave, millimeter wave wireless communication field, there is good application.
The zero degree phase-shifter of current practicality has various ways, has plenty of by each bars transfer arm and adopts the conventional transmission line of different length to obtain phase difference, and what have is by adopting low pass or high pass filter to form signal transfer arm.These phase-shifters all exist working band narrow, complex structure, the shortcoming such as size is large.
Working band, insertion loss, size and structural complexity are the factors that good zero degree phase-shifter of designing and making must be considered.In order to improve the performance of zero degree phase-shifter, the size of reduction of device, many scholars have released certain methods basic zero degree phase-shifter have been improved, such as, increase coupling two-wire joint number, introduce defect aground plane structure etc. and strengthen coupling, increase bandwidth etc., but still can not solve some subject matters that exist in current design.
Summary of the invention
The object of the invention is for design is compacter and efficient microwave, millimetre integrated circuit are provided convenience, the working band that overcomes existing zero degree phase-shifter existence is wide not, loss is large, complex structure, size is large, make the deficiencies such as inconvenience, and a kind of broadband, filter with low insertion loss, compact dimensions, design is convenient, cost the is low zero degree phase-shifter based on having negative index transmission line are provided.
The technical scheme that technical solution problem of the present invention is taked is:
A kind of Wideband zero degree phase-shifter based on having negative index transmission line comprises the first operational amplifier U1, the second operational amplifier U
2, the 3rd operational amplifier U
3, the first inductance L
1, the second inductance L
2, the first resistance R
1, the second resistance R
2, the 3rd resistance R
3, the 4th resistance R
4, the 5th resistance R
5, the 6th resistance R
6, the first microstrip transmission line TL
1, the second microstrip transmission line TL
2with electrochemical capacitor C.
The first operational amplifier U
1negative input and the first inductance L
1one end be connected as an input of zero degree phase-shifter, another input end grounding of zero degree phase-shifter;
The first inductance L
1the other end, the first resistance R
1one end and the first operational amplifier U
1output connect, the first resistance R
1the other end, the second resistance R
2one end and the first operational amplifier U
1positive input connect; The second resistance R
2the other end and the first microstrip transmission line TL
1one end connect, the first microstrip transmission line TL
1the other end respectively with the second operational amplifier U
2negative input, the 3rd resistance R
3one end, the second microstrip transmission line TL
2one end connect, the second operational amplifier U
2positive input respectively with anode, the 4th resistance R of electrochemical capacitor C
4one end connect, the 3rd resistance R
3the other end and the 4th resistance R
4the other end all with the second operational amplifier U
2output connect, the negativing ending grounding of electrochemical capacitor C; The second microstrip transmission line TL
2the other end respectively with the second inductance L
2one end, the 3rd operational amplifier U
3negative input connect, the second inductance L
2the other end, the 5th resistance R
5one end all with the 3rd operational amplifier U
3output connect, the 5th resistance R
5the other end, the 6th resistance R
6one end and the 3rd operational amplifier U
3positive input connect.
The 6th resistance R
6the other end as an output of zero degree phase-shifter, another output head grounding of zero degree phase-shifter.
The first operational amplifier U
1a power input ground connection, another power input respectively with the second resistance R
2the other end, the first microstrip transmission line TL
1one end connect; The second operational amplifier U
2two equal ground connection of power input; The 3rd operational amplifier U
3a power input ground connection, another power input and the 6th resistance R
6the other end connect.
The present invention can obtain low insertion loss, and very wide working band, by C, R, L
1and L
2reasonably value realizes zero degree phase shift.Adopt the network consistings such as inductance, electric capacity, simple in structure, design is convenient simultaneously, compact dimensions, and cost of manufacture is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is equivalent transformation schematic diagram of the present invention;
Fig. 3 is the phase difference schematic diagram of signal after the present invention;
Fig. 4 is transmission coefficient S21 parameter characteristic schematic diagram of the present invention;
Fig. 5 is reflection coefficient S11 parameter characteristic schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, zero degree phase-shifter comprises that zero degree phase-shifter comprises the first operational amplifier U
1, the second operational amplifier U
2, the 3rd operational amplifier U
3, the first inductance L
1, the second inductance L
2, the first resistance R
1, the second resistance R
2, the 3rd resistance R
3, the 4th resistance R
4, the 5th resistance R
5, the 6th resistance R
6, the first microstrip transmission line TL
1, the second microstrip transmission line TL
2with electrochemical capacitor C.
The first operational amplifier U
1negative input and the first inductance L
1one end be connected as an input of zero degree phase-shifter, another input end grounding of zero degree phase-shifter.
The first inductance L
1the other end, the first resistance R
1one end and the first operational amplifier U
1output connect, the first resistance R
1the other end, the second resistance R
2one end and the first operational amplifier U
1positive input connect; The second resistance R
2the other end and the first microstrip transmission line TL
1one end connect, the first microstrip transmission line TL
1the other end respectively with the second operational amplifier U
2negative input, the 3rd resistance R
3one end, the second microstrip transmission line TL
2one end connect, the second operational amplifier U
2positive input respectively with anode, the 4th resistance R of electrochemical capacitor C
4one end connect, the 3rd resistance R
3the other end and the 4th resistance R
4the other end all with the second operational amplifier U
2output connect, the negativing ending grounding of electrochemical capacitor C; The second microstrip transmission line TL
2the other end respectively with the second inductance L
2one end, the 3rd operational amplifier U
3negative input connect, the second inductance L
2the other end, the 5th resistance R
5one end all with the 3rd operational amplifier U
3output connect, the 5th resistance R
5the other end, the 6th resistance R
6one end and the 3rd operational amplifier U
3positive input connect.
The 6th resistance R
6the other end as an output of zero degree phase-shifter, another output head grounding of zero degree phase-shifter.
The first operational amplifier U
1a power input ground connection, another power input respectively with the second resistance R
2the other end, the first microstrip transmission line TL
1one end connect; The second operational amplifier U
2two equal ground connection of power input; The 3rd operational amplifier U
3a power input ground connection, another power input and the 6th resistance R
6the other end connect.As shown in Figure 2, zero degree phase-shifter can equivalent transformation be: by R
1, R
2, amplifier U
1and L
1formation-L
1series inductance, by R
5, R
6, amplifier U
3and L
2formation-L
2series inductance, by R
3, R
4, amplifier U
2with C formation-C shunt capacitance.Then with microstrip transmission line TL
1and TL
2be together in series and form zero degree phase-shifter.
Zero degree phase-shifter basic functional principle is: signal process is by traditional microstrip transmission line TL
1and TL
2the phase-shift constant obtaining is
, wherein L
tLand C
tLfor microstrip transmission line TL
1and TL
2inductance and the electric capacity of equivalence, signal is through by the phase-shift constant with the acquisition of negative index transmission line being
(L
1=L
2), effectively phase shift is
, as transmission line TL
1and TL
2after parameter is determined, by C, R, L
1and L
2reasonably value realizes zero degree phase shift.
As shown in Figure 3, we select resistance R
1=R
2=R
3=R
4=R
5=R
6=50
, inductance L
1=L
2=5.328nH, capacitor C=0.626pF, microstrip transmission line TL
1and TL
2live width 1.39mm, long 2.46mm.The phase response of signal after composite transmission line branch road is as shown in solid line in Fig. 3.Visible at working frequency range 0GHz in 5.44GHz, phase shift remains at 0 about degree, fluctuation is no more than 5 degree up and down.
As shown in Figure 4, at working frequency range 0GHz, in 5.44GHz, signal is after composite transmission line branch road, and transmission coefficient S21 absolute value is less than 5dB, illustrates that this zero degree phase-shifter has advantages of broadband, filter with low insertion loss.
As shown in Figure 5, at working frequency range 0GHz, in 5.44GHz, signal is after composite transmission line branch road, and be less than-15dB of reflection coefficient S11, illustrates the little advantage of this zero degree phase-shifter loss.
Claims (1)
1. the Wideband zero degree phase-shifter based on having negative index transmission line, comprises the first operational amplifier U1, the second operational amplifier U
2, the 3rd operational amplifier U
3, the first inductance L
1, the second inductance L
2, the first resistance R
1, the second resistance R
2, the 3rd resistance R
3, the 4th resistance R
4, the 5th resistance R
5, the 6th resistance R
6, the first microstrip transmission line TL
1, the second microstrip transmission line TL
2with electrochemical capacitor C, it is characterized in that:
The first operational amplifier U
1negative input and the first inductance L
1one end be connected as an input of zero degree phase-shifter, another input end grounding of zero degree phase-shifter;
The first inductance L
1the other end, the first resistance R
1one end and the first operational amplifier U
1output connect, the first resistance R
1the other end, the second resistance R
2one end and the first operational amplifier U
1positive input connect; The second resistance R
2the other end and the first microstrip transmission line TL
1one end connect, the first microstrip transmission line TL
1the other end respectively with the second operational amplifier U
2negative input, the 3rd resistance R
3one end, the second microstrip transmission line TL
2one end connect, the second operational amplifier U
2positive input respectively with anode, the 4th resistance R of electrochemical capacitor C
4one end connect, the 3rd resistance R
3the other end and the 4th resistance R
4the other end all with the second operational amplifier U
2output connect, the negativing ending grounding of electrochemical capacitor C; The second microstrip transmission line TL
2the other end respectively with the second inductance L
2one end, the 3rd operational amplifier U
3negative input connect, the second inductance L
2the other end, the 5th resistance R
5one end all with the 3rd operational amplifier U
3output connect, the 5th resistance R
5the other end, the 6th resistance R
6one end and the 3rd operational amplifier U
3positive input connect;
The 6th resistance R
6the other end as an output of zero degree phase-shifter, another output head grounding of zero degree phase-shifter;
The first operational amplifier U
1a power input ground connection, another power input respectively with the second resistance R
2the other end, the first microstrip transmission line TL
1one end connect; The second operational amplifier U
2two equal ground connection of power input; The 3rd operational amplifier U
3a power input ground connection, another power input and the 6th resistance R
6the other end connect;
The first described resistance R
1, the second resistance R
2, the first operational amplifier U1 and the first inductance L
1form the first series inductance, the 5th resistance R
5, the 6th resistance R
6, the 3rd operational amplifier U3 and the second inductance L
2form the second series inductance, the 3rd resistance R
3, the 4th resistance R
4, the second operational amplifier U2 and electrochemical capacitor C form shunt capacitance, then with the first microstrip transmission line TL
1with the second microstrip transmission line TL
2zero degree phase-shifter in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110077005.0A CN102195613B (en) | 2011-03-29 | 2011-03-29 | Wideband zero phase shifter provided with transmission line with negative refractive index |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110077005.0A CN102195613B (en) | 2011-03-29 | 2011-03-29 | Wideband zero phase shifter provided with transmission line with negative refractive index |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102195613A CN102195613A (en) | 2011-09-21 |
| CN102195613B true CN102195613B (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101584114A (en) * | 2006-11-27 | 2009-11-18 | 汤姆森特许公司 | Active low-pass filter |
| CN101651451A (en) * | 2005-05-02 | 2010-02-17 | Tdk株式会社 | Multilayer filter |
| CN202085139U (en) * | 2011-03-29 | 2011-12-21 | 浙江大学 | Novel wideband zero degree phase shifter based on transmission wire with negative refractive index |
-
2011
- 2011-03-29 CN CN201110077005.0A patent/CN102195613B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101651451A (en) * | 2005-05-02 | 2010-02-17 | Tdk株式会社 | Multilayer filter |
| CN101584114A (en) * | 2006-11-27 | 2009-11-18 | 汤姆森特许公司 | Active low-pass filter |
| CN202085139U (en) * | 2011-03-29 | 2011-12-21 | 浙江大学 | Novel wideband zero degree phase shifter based on transmission wire with negative refractive index |
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| Publication number | Publication date |
|---|---|
| CN102195613A (en) | 2011-09-21 |
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