CN102195613A - Novel wideband zero phase shifter provided with transmission line with negative refractive index - Google Patents
Novel wideband zero phase shifter provided with transmission line with negative refractive index Download PDFInfo
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- CN102195613A CN102195613A CN2011100770050A CN201110077005A CN102195613A CN 102195613 A CN102195613 A CN 102195613A CN 2011100770050 A CN2011100770050 A CN 2011100770050A CN 201110077005 A CN201110077005 A CN 201110077005A CN 102195613 A CN102195613 A CN 102195613A
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- resistance
- operational amplifier
- transmission line
- connect
- microstrip transmission
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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 the microwave radio technical field, relate to a kind of based on Wideband zero degree phase-shifter with negative index transmission line.
Background technology
The zero degree phase-shifter is one of device important in microwave and the radio frequency, the zero degree phase-shifter is widely used in Zero-order resonant antenna and cascade power splitter at present, in the middle of microwaves such as microwave mixer network and phased array antenna and the radio-frequency apparatus, in satellite communication, microwave, millimeter wave wireless communication field, good application is arranged.
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 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.
Working band, insertion loss, size and structural complexity are designs and make the factor that a good zero degree phase-shifter 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, 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 design is compact more and microwave, millimetre integrated circuit are provided convenience efficiently, the working band that overcomes existing zero degree phase-shifter existence is wide inadequately, loss is big, complex structure, size is big, make deficiency such as inconvenience, provides a kind of broadband, low Insertion Loss, compact dimensions, design is convenient, cost is low based on the zero degree phase-shifter with negative index transmission line.
The technical scheme that technical solution problem of the present invention is taked is:
A kind ofly comprise the first operational amplifier U1, the second operational amplifier U based on Wideband zero degree phase-shifter with negative index transmission line
2, the 3rd operational amplifier U
3, first inductance L
1, second inductance L
2, first resistance R
1, 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
1The negative input and first inductance L
1An end link to each other as an input of zero degree phase-shifter, another input end grounding of zero degree phase-shifter;
First inductance L
1The other end, first resistance R
1An end and the first operational amplifier U
1Output connect first resistance R
1The other end, second resistance R
2An end and the first operational amplifier U
1Positive input connect; Second resistance R
2The other end and the first microstrip transmission line TL
1An end connect the first microstrip transmission line TL
1The other end respectively with the second operational amplifier U
2Negative input, the 3rd resistance R
3An end, the second microstrip transmission line TL
2An end connect the second operational amplifier U
2Positive input respectively with anode, the 4th resistance R of electrochemical capacitor C
4An 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 second inductance L
2An end, the 3rd operational amplifier U
3Negative input connect second inductance L
2The other end, the 5th resistance R
5An end all with the 3rd operational amplifier U
3Output connect the 5th resistance R
5The other end, the 6th resistance R
6An 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 second resistance R
2The other end, the first microstrip transmission line TL
1An 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 is by to C, R, L
1And L
2Reasonably value realizes the zero degree phase shift.Adopt inductance, electric capacity etc. to form network simultaneously, simple in structure, design is convenient, compact dimensions, and cost of manufacture is low.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is an equivalent transformation schematic diagram of the present invention;
Fig. 3 is that signal is through the phase difference schematic diagram behind the present invention;
Fig. 4 is a transmission coefficient S21 parameter characteristic schematic diagram of the present invention;
Fig. 5 is a reflection coefficient S11 parameter characteristic schematic diagram of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the zero degree phase-shifter comprises that the zero degree phase-shifter comprises the first operational amplifier U
1, the second operational amplifier U
2, the 3rd operational amplifier U
3, first inductance L
1, second inductance L
2, first resistance R
1, 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
1The negative input and first inductance L
1An end link to each other as an input of zero degree phase-shifter, another input end grounding of zero degree phase-shifter.
First inductance L
1The other end, first resistance R
1An end and the first operational amplifier U
1Output connect first resistance R
1The other end, second resistance R
2An end and the first operational amplifier U
1Positive input connect; Second resistance R
2The other end and the first microstrip transmission line TL
1An end connect the first microstrip transmission line TL
1The other end respectively with the second operational amplifier U
2Negative input, the 3rd resistance R
3An end, the second microstrip transmission line TL
2An end connect the second operational amplifier U
2Positive input respectively with anode, the 4th resistance R of electrochemical capacitor C
4An 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 second inductance L
2An end, the 3rd operational amplifier U
3Negative input connect second inductance L
2The other end, the 5th resistance R
5An end all with the 3rd operational amplifier U
3Output connect the 5th resistance R
5The other end, the 6th resistance R
6An 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 second resistance R
2The other end, the first microstrip transmission line TL
1An 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, the zero degree phase-shifter can equivalent transformation be: by R
1, R
2, amplifier U
1And L
1Formation-L
1Series inductance is by R
5, R
6, amplifier U
3And L
2Formation-L
2Series inductance is 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 constitute the zero degree phase-shifter.
Zero degree phase-shifter basic functional principle is: the signal process is by traditional microstrip transmission line TL
1And TL
2The phase-shift constant that obtains is
, L wherein
TLAnd C
TLBe microstrip transmission line TL
1And TL
2The inductance 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 to C, R, L
1And L
2Reasonably value realizes the 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.Phase response behind the signal process composite transmission line branch road is shown in solid line among Fig. 3.As seen at working frequency range 0GHz in 5.44GHz, phase shift remain at 0 the degree about, up and down the fluctuation be no more than 5 the degree.
As shown in Figure 4, in 5.44GHz, behind the signal process composite transmission line branch road, transmission coefficient S21 absolute value illustrates that less than 5dB this zero degree phase-shifter has the advantage of broadband, low Insertion Loss at working frequency range 0GHz.
As shown in Figure 5, in 5.44GHz, signal is through behind the composite transmission line branch road at working frequency range 0GHz, and reflection coefficient S11 illustrates the little advantage of this zero degree phase-shifter loss less than-15dB.
Claims (1)
1. one kind based on the Wideband zero degree phase-shifter with negative index transmission line, comprises the first operational amplifier U1, the second operational amplifier U
2, the 3rd operational amplifier U
3, first inductance L
1, second inductance L
2, first resistance R
1, 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
1The negative input and first inductance L
1An end link to each other as an input of zero degree phase-shifter, another input end grounding of zero degree phase-shifter;
First inductance L
1The other end, first resistance R
1An end and the first operational amplifier U
1Output connect first resistance R
1The other end, second resistance R
2An end and the first operational amplifier U
1Positive input connect; Second resistance R
2The other end and the first microstrip transmission line TL
1An end connect the first microstrip transmission line TL
1The other end respectively with the second operational amplifier U
2Negative input, the 3rd resistance R
3An end, the second microstrip transmission line TL
2An end connect the second operational amplifier U
2Positive input respectively with anode, the 4th resistance R of electrochemical capacitor C
4An 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 second inductance L
2An end, the 3rd operational amplifier U
3Negative input connect second inductance L
2The other end, the 5th resistance R
5An end all with the 3rd operational amplifier U
3Output connect the 5th resistance R
5The other end, the 6th resistance R
6An 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 second resistance R
2The other end, the first microstrip transmission line TL
1An 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.
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 true CN102195613A (en) | 2011-09-21 |
| CN102195613B CN102195613B (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110077005.0A Expired - Fee Related CN102195613B (en) | 2011-03-29 | 2011-03-29 | Wideband zero phase shifter provided with transmission line with negative refractive index |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102195613B (en) |
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 |
|---|---|
| CN102195613B (en) | 2014-05-07 |
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