CN107887678A - A kind of design method of phase shifter - Google Patents
A kind of design method of phase shifter Download PDFInfo
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- CN107887678A CN107887678A CN201710942187.0A CN201710942187A CN107887678A CN 107887678 A CN107887678 A CN 107887678A CN 201710942187 A CN201710942187 A CN 201710942187A CN 107887678 A CN107887678 A CN 107887678A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
- H01P1/182—Waveguide phase-shifters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
- H01P1/184—Strip line phase-shifters
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
The present invention discloses a kind of design method of phase shifter, belongs to microwave technical field.The design method can realize broadband phase shift of the phase shifter in the range of 0~360 degree, by introducing phase compensation minor matters, it is satisfied by required phase-shift phase in the certain limit near centre frequency, so as to effectively lift phase bandwidth, while good transmission characteristic and echoing characteristics can also be kept.The invention can be used in the microwave circuits and system such as the feeding network of array antenna, balanced type amplifying circuit.
Description
Technical field
The present invention relates to wireless communication field, and in particular to a kind of design method of phase shifter, the design method can realize 0
Broadband phase shift in the range of~360 degree.
Background technology
Microwave phase shifter is the basic device in microwave engineering, and the extensive use in microwave circuit and system.Such as move
Antenna in dynamic base station, the sensing of its main beam require adjustable, meet user's request to realize best wave cover.This is just
Need to use phased array antenna, and phase shifter is then the pith for forming phased array antenna.In addition, phase shifter is put in balanced type
Also there is important application in the microwave circuits such as big circuit, power synthesis network and system.
Document " 180 ° of Bit Phase Shifter Using a New Switched Network of Broadband
(Soon-Young Eom,Soon-Ick Jeon,Jong-Seok Chae,Jong-Gwan Yook.IEEE MTT-S
International Microwave Symposium Digest,2003:One kind 39-42) " is proposed at transmission line both ends to add
Load two is opened a way, the design method of the 180 degree phase shifter of short-circuit minor matters.The input port standing-wave ratio of the phase shifter is 1.15, band
Interior phase fluctuation is within 2 degree；But the phase shifter circuit size of this method design is big.
Document " Microwave Slow-Wave Structure and Phase-Compensation Technique
for Microwave Power Divider(Jia-Lin Li；Wei Shao；Jian-Peng Wang；Xue-Song Yang；
Shan-Shan Gao.Radioengineering,2014,23(1):214-221) " propose it is a kind of opened by parallel connection loading,
Short-circuit minor matters carry out the method for phase compensation to phase shift work(point, but do not provide its design method in text.
Document " 90 ° of Broadband Asymmetrical Open-Short-Stub Phase Shifter with
Inductance Compensation(Muh-Dei Wei；Peco Gjurovski；Renato Negra.46th European
Microwave Conference,2016:979-982) " propose a kind of asymmetric broadband of inductance compensation formula open, short-circuit minor matters
The design method of phase shifter, the working frequency of the phase shifter is 2.3GHz, and the relative phase bandwidth of phase difference ± 5 ° is reachable
90.4%.But the phase shifter has used lamped element, when working frequency raises, the influence that ghost effect is brought be can not ignore,
Cause its penalty, thus the scope of application of the phase shifter is limited.
At present, existing document realizes the concrete case of broadband phase shift, but not yet has been reported that the broadband for providing any phase-shift phase
The design method of phase shifter.Therefore, the broad-band phase shifter with any phase-shift phase how is designed, is rich in challenge in microwave engineering
The problem of property.
The content of the invention
It is an object of the invention to provide a kind of design method of phase shifter, the design method can realize 0~360 degree of scope
Interior broadband phase shift.The present invention realizes the phase shifter by loading phase compensation minor matters in parallel on the transmission line；The phase
Collocation structure can be that one section of short-circuit minor matters is formed in parallel with one section of open circuit minor matters, may also be only one section of short-circuit minor matters or one section
Open circuit minor matters.
The present invention uses following technical scheme：
A kind of design method of phase shifter, the design method can realize the broad-band phase shifter in the range of 0~360 degree；It is described
Phase shifter realizes the function by way of the loading phase compensation minor matters in parallel on microstrip transmission line；The phase shifter it is defeated
Inbound port 1,5,9 is by the way that transmission line is connected with output port 2,6,10 between transmission line, the second level between the first order；Between the first order
The public connecting end parallel connection of transmission line is loaded with phase compensation structure between transmission line and the second level；The phase compensation structure is one
105, one sections of short-circuit minor matters 205 of parallel-connection structure or one section of open circuit minor matters 305 of the short-circuit minor matters of section and one section of open circuit minor matters.
The characteristic impedance of transmission line is Z between transmission line and the second level between the first order1, electrical length is θ1；The phase shifter
The characteristic impedance of reference transmission line be Z2, electrical length θ2, both ends are the input port 3,7,11 and output port of reference transmission line
4、8、12；The electrical length of transmission line and characteristic impedance are determined by below equation between transmission line, the second level between the first order：
θ=θ2-θd(1)
Z1=50 Ω (3)
Wherein θ is to be loaded with the transmission line of phase compensation structure integrally equivalent electrical length, θdFor the phase-shift phase of the phase shifter.
The phase compensation structure can be the parallel-connection structure of one section of short-circuit minor matters and one section of open circuit minor matters, may also be only
One section of open circuit minor matters or one section of short-circuit minor matters；It is adjustable by adjusting electrical length and the characteristic impedance of short-circuit minor matters and minor matters of opening a way
The phase bandwidth of the whole broad-band phase shifter；The electrical length of short-circuit minor matters and open circuit minor matters is determined by below equation：
Wherein, θsFor the electrical length of short-circuit minor matters, θoFor the electrical length for minor matters of opening a way；α values are 0 or 1, n are to be more than or wait
In 0 integer.
By adjusting the characteristic impedance of short-circuit minor matters and/or minor matters of opening a way in the phase compensation structure, loading can be changed
There is phase response slope of the transmission line of phase compensation structure at centre frequency, make it oblique with the phase response of reference transmission line
Rate is identical, so as to realize the purpose for expanding phase bandwidth.
Short-circuit minor matters are identical with the characteristic impedance of open circuit minor matters in the phase compensation structure, i.e. ZOAnd ZSIt is identical, its normalizing
Change characteristic impedance z and meet below equation：
Wherein, f0Centered on frequency.
All structures in the present invention can pass through other transmission such as microstrip transmission line, coplanar waveguide transmission line or waveguide
Line is realized.
The beneficial effects of the invention are as follows：
The present invention is realized attached to phase shifter centre frequency by loading phase compensation structure in parallel between two-stage transmission line
The expansion of phase bandwidth in nearly certain bandwidth range, and can be as needed, realize the phase-shift phase in the range of 0~360 degree；With
Prior art is compared, and the invention provides the general design method of the broad-band phase shifter with any phase-shift phase, parameter chooses spirit
It is living, it can be minimized according to demand, high performance design, and do not limited by working frequency range.
Brief description of the drawings
Fig. 1 loading compensation minor matters provided by the invention are one section of short-circuit minor matters and the width of the parallel-connection structure of one section of open circuit minor matters
Band phase shifter structure schematic diagram；
Fig. 2 loading phase compensation minor matters provided by the invention are the broad-band phase shifter structural representation of one section of short-circuit minor matters；
Fig. 3 loading phase compensation minor matters provided by the invention are the broad-band phase shifter structural representation of one section of open circuit minor matters；
The graph of a relation of Fig. 4 open circuits provided by the invention, the normalized characteristic impedance of short-circuit phase compensation minor matters and phase-shift phase；
The graph of a relation of Fig. 5 different phase-shift phases provided by the invention and normalized frequency；
A kind of Fig. 6 90-degree phase shifter structural representations provided in an embodiment of the present invention；
The echoing characteristics and transmission coefficient of a kind of Fig. 7 90-degree phase shifters provided in an embodiment of the present invention；
A kind of phase shift flow characteristic of Fig. 8 90-degree phase shifters provided in an embodiment of the present invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples, protection scope of the present invention is included but not
It is limited to following embodiments：
A kind of design method of phase shifter, the design method can realize the broad-band phase shifter in the range of 0~360 degree；It is described
Phase shifter realizes the function by way of the loading phase compensation minor matters in parallel on microstrip transmission line, its basic block diagram point
Not as shown in Figure 1, Figure 2 and Figure 3；The input port 1,5,9 of the phase shifter between the first order between transmission line, the second level by transmitting
Line is connected with output port 2,6,10；The public connecting end of transmission line loading in parallel between transmission line and the second level between the first order
There is phase compensation structure；The phase compensation structure is 105, one sections of the parallel-connection structure of one section of short-circuit minor matters and one section of open circuit minor matters
Short-circuit minor matters 205 or one section of open circuit minor matters 305.
The characteristic impedance of transmission line is Z between transmission line and the second level between the first order1, electrical length is θ1；The phase shifter
The characteristic impedance of reference transmission line be Z2, electrical length θ2, both ends are the input port 3,7,11 and output port of reference transmission line
4、8、12；The electrical length of transmission line and characteristic impedance are determined by below equation between transmission line, the second level between the first order：
θ=θ2-θd (1)
Z1=50 Ω (3)
Wherein θ is to be loaded with the transmission line of phase compensation structure integrally equivalent electrical length, θdFor the phase-shift phase of the phase shifter.
The phase compensation structure can be the parallel-connection structure of one section of short-circuit minor matters and one section of open circuit minor matters, may also be only
One section of open circuit minor matters or one section of short-circuit minor matters；It is adjustable by adjusting electrical length and the characteristic impedance of short-circuit minor matters and minor matters of opening a way
The phase bandwidth of the whole broad-band phase shifter；The electrical length of short-circuit minor matters and open circuit minor matters is determined by below equation：
Wherein, θsFor the electrical length of short-circuit minor matters, θoFor the electrical length for minor matters of opening a way；α values are 0 or 1, n are to be more than or wait
In 0 integer.
By adjusting the characteristic impedance of short-circuit minor matters and/or minor matters of opening a way in the phase compensation structure, loading can be changed
There is phase response slope of the transmission line of phase compensation structure at centre frequency, make it oblique with the phase response of reference transmission line
Rate is identical, so as to realize the purpose for expanding phase bandwidth.
Short-circuit minor matters are identical with the characteristic impedance of open circuit minor matters in the phase compensation structure, its normalized characteristic impedance z
Meet below equation：
Wherein, f0Centered on frequency.To above-mentioned design equation (1) to (6) can further with chart come state its short circuit,
Relation between the normalized characteristic impedance and phase-shift phase of minor matters of opening a way, as shown in Figure 4.Fig. 5 is different phase-shift phases and normalization
The graph of a relation of frequency.
The design object of the present embodiment is to realize the broad-band phase shifter of 90 degree of phase shifts.The present embodiment is using microstrip line as biography
Defeated line, the relative dielectric constant of medium substrate is 2.65, dielectric substrate thickness 0.8mm, centre frequency 2.45GHz.
Its structural representation is as shown in fig. 6, each several part design parameter is as follows：
Port 601,602 is loaded with the input of the transmission line of phase compensation minor matters, output port for described in；
Port 603,604 is the input of the reference transmission line, output port；
Port 605,606 is 50 Europe port transmission lines, and it is π/4 to try to achieve its electrical length according to design equation (1), (2), (3),
Characteristic impedance is 50 Europe；Thus the width for obtaining two transmission lines is 2.2mm, and length is 9.6mm；
607 be the short-circuit minor matters in phase compensation structure, according to Fig. 5, selects α=0, characteristic impedance corresponding to n=0, knot
It is 50 Europe to close design equation (4) and obtain its characteristic impedance, and electrical length is π/4, and it is 2.2mm thus to obtain its width, and length is
9.6mm；
608 be the open circuit minor matters in phase compensation structure, according to Fig. 5, selects α=0, characteristic impedance corresponding to n=0, knot
It is 50 Europe to close design equation (5) and obtain its characteristic impedance, and electrical length is π/4, width 2.2mm, length 9.6mm；
609 be short-circuit minor matters circular metalized ground via, a diameter of 1mm；
610 be 50 Europe reference transmission lines, width 2.2mm, length 38mm.
Echoing characteristics, transmission coefficient and phase characteristic provided in an embodiment of the present invention are as shown in FIG. 7 and 8.As can be seen here, institute
State that echoing characteristics of the phase shifter near centre frequency is good, and insertion loss is small；Also, the phase shifter can greatly improve phase
Bandwidth, in the case of suitable parameter is chosen, phase bandwidth can reach octave.What deserves to be explained is phase shifter of the present invention
Flexible design, it is versatile；, can be with by the relation between Fig. 4 compensation minor matters normalized characteristic impedances provided and phase-shift phase
Suitable design parameter is chosen depending on actual conditions, to meet different designs needs.Following table lists not plus compensated the phase shift of minor matters
Relative phase bandwidth (± 5 °) comparing result of device and broad-band phase shifter of the present invention, for contrasting phase shifter of the present invention
Design parameter be to be determined according to above-mentioned design equation and Fig. 4.Protection scope of the present invention includes but is not limited to feelings listed in Table
Condition.
Claims (4)
1. a kind of design method of phase shifter, the design method can realize the broad-band phase shifter in the range of 0~360 degree；The shifting
Phase device realizes the function by way of the loading phase compensation minor matters in parallel on microstrip transmission line；The input of the phase shifter
Port (1,5,9) is by the way that transmission line is connected with output port (2,6,10) between transmission line, the second level between the first order；The first order
Between between transmission line and the second level public connecting end parallel connection of transmission line be loaded with phase compensation structure；The phase compensation structure is
Parallel-connection structure (105), one section of short-circuit minor matters (205) or the one section of open circuit minor matters of one section of short-circuit minor matters and one section of open circuit minor matters
(305)；
The characteristic impedance of transmission line is Z between transmission line and the second level between the first order1, electrical length is θ1；The ginseng of the phase shifter
It is Z to examine line characteristic impedance2, electrical length θ2, both ends are the input port (3,7,11) and output port of reference transmission line
(4、8、12)；The electrical length of transmission line and characteristic impedance are determined by below equation between transmission line, the second level between the first order：
θ=θ2-θd (1)
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Wherein θ is to be loaded with the transmission line of phase compensation structure integrally equivalent electrical length, θdFor the phase-shift phase of the phase shifter.
2. the design method of phase shifter according to claim 1, it is characterised in that by adjusting short-circuit minor matters and open circuit branch
The electrical length of section and characteristic impedance, it can adjust the phase bandwidth of the broad-band phase shifter；The electricity of short-circuit minor matters and open circuit minor matters is long
Degree is determined by below equation：
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Integer.
3. the design method of phase shifter according to claim 2, it is characterised in that by adjusting the phase compensation structure
The characteristic impedance of middle short-circuit minor matters and/or minor matters of opening a way, can change the transmission line for being loaded with phase compensation structure in centre frequency
The phase response slope at place, make it identical with the phase response slope of reference transmission line；Short-circuit branch in the phase compensation structure
Save, i.e. Z identical with the characteristic impedance of open circuit minor matters0And ZSIdentical, its normalized characteristic impedance z meets below equation：
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Wherein, f0Centered on frequency.
4. the design method of phase shifter according to claim 1, it is characterised in that transmission line, second between the first order
Transmission line and phase compensation structure are using microstrip transmission line, the transmission line form of encourage each other waveguide transmission line and/or waveguide between level.
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| CN201710942187.0A CN107887678B (en) | 2017-10-11 | 2017-10-11 | Design method of phase shifter |
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| CN201710942187.0A CN107887678B (en) | 2017-10-11 | 2017-10-11 | Design method of phase shifter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067364A (en) * | 2018-06-07 | 2018-12-21 | 佛山市顺德区中山大学研究院 | A kind of Doherty power amplifier of high-efficient wide-frequency output |
| CN109167172A (en) * | 2018-07-20 | 2019-01-08 | 电子科技大学 | A kind of broadband Butler matrix based on microstrip structure |
| CN114050413A (en) * | 2021-12-27 | 2022-02-15 | 陕西海积信息科技有限公司 | Broadband feed network, antenna and communication equipment |
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| CN103947037A (en) * | 2013-09-30 | 2014-07-23 | 华为技术有限公司 | Broadband phase shifter and broadband wave beam nature network |
| CN104393389A (en) * | 2014-11-14 | 2015-03-04 | 电子科技大学 | Broadband phase shifting power divider with amplitude and phase compensating function |
| CN106067578A (en) * | 2016-06-14 | 2016-11-02 | 中山大学 | A kind of multichannel differential phase shifter |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103947037A (en) * | 2013-09-30 | 2014-07-23 | 华为技术有限公司 | Broadband phase shifter and broadband wave beam nature network |
| CN104393389A (en) * | 2014-11-14 | 2015-03-04 | 电子科技大学 | Broadband phase shifting power divider with amplitude and phase compensating function |
| CN106067578A (en) * | 2016-06-14 | 2016-11-02 | 中山大学 | A kind of multichannel differential phase shifter |
Non-Patent Citations (1)
| Title |
|---|
| SHAO YONG ZHENG 等: ""Differential RF Phase Shifter With Harmonic Suppression"", 《IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067364A (en) * | 2018-06-07 | 2018-12-21 | 佛山市顺德区中山大学研究院 | A kind of Doherty power amplifier of high-efficient wide-frequency output |
| CN109067364B (en) * | 2018-06-07 | 2022-04-19 | 佛山市顺德区中山大学研究院 | Doherty power amplifier with broadband and efficient output |
| CN109167172A (en) * | 2018-07-20 | 2019-01-08 | 电子科技大学 | A kind of broadband Butler matrix based on microstrip structure |
| CN114050413A (en) * | 2021-12-27 | 2022-02-15 | 陕西海积信息科技有限公司 | Broadband feed network, antenna and communication equipment |
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| Publication number | Publication date |
|---|---|
| CN107887678B (en) | 2020-07-21 |
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