CN106067578A - A kind of multichannel differential phase shifter - Google Patents
A kind of multichannel differential phase shifter Download PDFInfo
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- CN106067578A CN106067578A CN201610416012.1A CN201610416012A CN106067578A CN 106067578 A CN106067578 A CN 106067578A CN 201610416012 A CN201610416012 A CN 201610416012A CN 106067578 A CN106067578 A CN 106067578A
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- 239000000758 substrate Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 88
- 238000011068 loading method Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- 239000003989 dielectric material Substances 0.000 claims description 5
- 238000013461 design Methods 0.000 abstract description 11
- 238000004891 communication Methods 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- 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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- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
The present invention relates to a kind of multichannel differential phase shifter, its structure includes the three-decker arranged successively from top to bottom, and wherein, ground floor is the elementary cell being provided with reference line and delay line, and the second layer is substrate, and third layer is metal ground layer.The position being loaded minor matters by changing delay line can easily realize the uniformity of reference line and delay line phase slope, thus ensures that delay line and reference line have constant phase difference on broadband.Compared to traditional multichannel differential phase shifter, present configuration is simple, it is easy to design, can be used in the communication system such as phased array, Wave-packet shaping network.
Description
Technical field
The present invention relates to microwave, the differential phase shifter using in millimetre-wave attenuator, should at multichannel communication multiple telecommunication particularly to one
With the middle micro-strip differential phase shifter realizing multiple phase output simultaneously.
Background technology
Differential phase shifter is a kind of passive device being widely used in microwave communication, radar and measurement system.Its structure is led to
Often including reference line and delay line, two paths can keep constant phase difference in certain bandwidth, thus is keeping signal
Different phase outputs is realized in the case that amplitude characteristic is constant.
Realize that the method for differential phase shifter mainly has following several at present:
First, based on classical Schiffman structure structural wideband differential phase shifter.The reference line of Schiffman structure is typically
50 transmission lines, delay line is the coupled line structure being connected.Improving based on this structure generally can be at wider band
Bigger angular range is realized on width.
2nd, by loading open/short minor matters structural wideband differential phase shifter in parallel.Its method is to load on delay line
Open/short minor matters in parallel so that it is phase output slope is consistent with reference line.
3rd, based on coupled line structure structural wideband differential phase shifter.As Amin M. Abbosh is ellipse by be mutually coupled
Circle microband paste structural wideband differential phase shifter.
But, configuration set forth above faces a common shortcoming: in multichannel leggy applied environment, for difference
Phase difference output, the reference line of phase shifter must be modified to meet the requirements every time, be this greatly limits device
Versatility, and need complicated cascade network to realize, and increasing of circuit network can cause circuit return loss
Increase the increase with size, cause circuit performance to decline.
For this shortcoming, related invention is had to propose the differential phase shifter design side of the unified reference line structure of design recently
Method, but this invention does not clearly provide the relation between design variable and the differential phase of needs, causes design complexity, general
Property is not high.
Content of the invention
It is an object of the invention to overcome deficiency present in above-mentioned prior art construction, and a kind of simple in construction be provided,
Method for designing is easy, can clearly provide the relation between design variable and the differential phase of needs, can realize multiple difference simultaneously
Split-phase position and the multichannel broadband phase shifter with generalized reference line structure.
To achieve these goals, the technical scheme is that
A kind of multichannel differential phase shifter, including the three-decker arranged successively from top to bottom, wherein, ground floor is for being provided with delay line
With the elementary cell of reference line, the second layer is substrate, and third layer is metal ground layer；
Described delay line is by the first transmission line of Three-section cascaded, the second transmission line, the 3rd transmission line and loads on the second transmission line
Six minor matters of both sides are constituted, the respectively first minor matters, the second minor matters, the 3rd minor matters, the 4th minor matters, the 5th minor matters, the 6th
Joint；Wherein the first minor matters, the second minor matters, the 3rd minor matters are carried in the second transmission line side, the 4th minor matters, the 5th minor matters, the 6th
Minor matters are carried in the second transmission line opposite side；Six minor matters are the both sides at the second transmission line for the parallel boot；
Centered on second length of transmission line frequency corresponding wavelength 1/2nd, the first transmission line and the first transmission line are 50
Transmission line, splices in the second transmission line two ends, and its length is equal；The a length of centre frequency corresponding wavelength of six parallel minor matters
1/8th, symmetrical two-by-two in the second transmission line both sides, wherein the first minor matters and the 4th minor matters are symmetrical, the second minor matters and the
Five minor matters are symmetrical, and the 3rd minor matters and the 6th minor matters are symmetrical, and two symmetrical minor matters structures are completely the same.
Preferably, the 4th minor matters, the 5th minor matters, the 6th minor matters one end connect the second transmission line, and the other end passes through metal mistake
Hole A1, A2, A3 ground connection.
Preferably, six parallel minor matters are calculated by the differential phase needing at the loading position of the second transmission line.
Preferably, described reference line by the transmission line of Three-section cascaded the Ith, transmission line the IIth, transmission line III and loads on transmission line
The minor matters of II both sides the Ith, minor matters II are constituted；
/ 2nd of a length of centre frequency corresponding wavelength of described transmission line II, described transmission line I and transmission line III are 50
Transmission line, splices in transmission line II two ends, and its length is equal；Described minor matters the Ith, minor matters II a length of centre frequency corresponding wavelength
1/8th, be positioned at the center of transmission line II and be symmetric in its both sides, and its structure is completely the same.
Preferably, described minor matters II one end connects transmission line II, and the other end is grounded by metallic vias B1.
Preferably, described elementary cell uses paster technique to be fixed on substrate, and substrate is dielectric material substrate, medium material
The RO4003C material that material uses thickness to be 0.813mm, its dielectric constant is 3.38.
Preferably, described metal ground layer is the metal ground layer being paved with good conductor.
Preferably, the phase angle output area of described phase shifter is 0 °-180 °.
Preferably, the phase angle of described phase shifter is output as 45 °, 60 °, 75 °, 90 °, 105 °, 120 ° and 135 °, i.e. phase shift
Device can realize 45 °, 60 °, 75 °, 90 °, 105 °, 120 ° and 135 ° of phase outputs in any operating frequency, it is also possible to according to reality
Border needs to realize other phase angles of 0 °-180 °.The specifically phase shifter of the present invention one group totally eight, respectively reference line, 45 °
Delay line, 60 ° of delay lines, 75 ° of delay lines, 90 ° of delay lines, 105 ° of delay lines, 120 ° of delay lines and 135 ° of delay lines, can be
Realize 45 °, 60 °, 75 °, 90 °, 105 °, 120 ° and 135 ° of differential phases in the relative bandwidth of 56% simultaneously.
A kind of method for designing of multichannel differential phase shifter, first, true according to required centre frequency and relevant design formula
Determine delay line second segment transmission line, the length and width of three sections of transmission lines of reference line and all loading minor matters；Afterwards fix with
Upper parameter, according to required differential phase, determines and loads the position of minor matters on the corresponding delay line of each differential phase and prolong
The length of slow first, second section of transmission line of line.
Compared with prior art, the multichannel multi-phase differential phase shifter employed in the present invention, has the advantages that
1st, having general reference line structure, the phase output that reference line does not needs as required adjusts, should at multichannel leggy
Use, there is lower design complexities；2nd, the relation between design variable and the differential phase of needs is clearly given, design
Easy；3rd, the length changing the position and delay line the firstth, the 3rd section of transmission line loading minor matters is only needed just can to realize difference
Phase output, highly versatile；4th, size is little, can realize miniaturization, it is easy to integrated；5th, planar microstrip structure is used, structure letter
Single, low cost；6th, for other structure, the present invention is provided that wider relative bandwidth；7th, simultaneously realizable phase place
Angular range is wide.
Brief description
Fig. 1 is embodiment of the present invention side structure schematic diagram.
Fig. 2 is embodiment of the present invention ground floor delay line upper strata paster overall structure schematic diagram.
Fig. 3 is embodiment of the present invention ground floor reference line upper strata paster overall structure schematic diagram.
Fig. 4 is the emulation of embodiment of the present invention amplitude response and measurement result comparison diagram.
Fig. 5 is the emulation of embodiment of the present invention phase response and measurement result comparison diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme being used the embodiment of the present invention is carried out clearly
Clear, detailed description, described embodiment is only a part of embodiment in the present invention, rather than whole embodiments.
Based on embodiments of the invention, those of ordinary skill in the art obtained on the premise of not making creative work other
Embodiment, broadly falls into the protection domain of the embodiment of the present invention.
In conjunction with shown in Fig. 1 to Fig. 3, a kind of multichannel differential phase shifter, including the three-decker arranged successively from top to bottom, its
In, ground floor is the elementary cell 101 being provided with delay line 200 and reference line 300, and the second layer is substrate 102, and third layer is metal
Stratum 103；
Described delay line 200 is by the first transmission line of Three-section cascaded the 201st, the second transmission line the 202nd, the 3rd transmission line 203 and loads
Six minor matters in the second transmission line 202 both sides are constituted, and the respectively first minor matters the 204th, the second minor matters the 205th, the 3rd minor matters are the 206th,
4th minor matters the 206th, the 5th minor matters the 207th, the 6th minor matters 208；Wherein the first minor matters the 204th, the second minor matters the 205th, the 3rd minor matters 206 add
Being loaded in the second transmission line 202 side, the 4th minor matters the 206th, the 5th minor matters the 207th, the 6th minor matters 208 are carried in the second transmission line 202
Opposite side；Six minor matters are the both sides at the second transmission line 202 for the parallel boot；
/ 2nd of the second a length of centre frequency corresponding wavelength of transmission line 202, width is Wm1, the first transmission line 201 and
One transmission line 203 is 50 transmission lines, splices in the second transmission line 202 two ends, and its length is equal, and length is Ldelay,
Width is W0；Centered on six parallel minor matters length Ls frequency corresponding wavelength 1/8th, in the second transmission line 202 both sides
Symmetrical two-by-two, wherein the first minor matters 204 and the 4th minor matters 207 are symmetrical, and the second minor matters 205 and the 5th minor matters 208 are symmetrical, the
Three minor matters 206 and the 6th minor matters 209 are symmetrical, and two symmetrical minor matters structures are completely the same.
4th minor matters the 207th, the 5th minor matters the 208th, the 6th minor matters 209 one end connects the second transmission line 202, and the other end leads to respectively
Crossing three metallic vias A1, A2, A3 ground connection, metallic vias radius is RV.
At the loading position of the second transmission line 202, (loading position difference will cause parameter Lm1 to six parallel minor matters, and Lm2 becomes
Change) calculated by the differential phase needing.
Reference line 300 is by the transmission line I 301 of Three-section cascaded, transmission line II 302, transmission line III 303 and loads on transmission line
The minor matters I 304 of II 302 both sides, minor matters II 305 are constituted；
/ 2nd of transmission line II 302 a length of centre frequency corresponding wavelength, width is Wm2, transmission line I 301 and transmission line
III 303 is 50 transmission lines, splices in transmission line II 302 two ends, and its length is equal, and length is Lref, and width is
W0；Centered on minor matters I 304, minor matters II 305 length Ls frequency corresponding wavelength 1/8th, be positioned at the center of transmission line II 302
And be symmetric in its both sides, and its structure is completely the same, i.e. width Ws3 is equal；Minor matters II 305 one end connects transmission line II
302, the other end is grounded by metallic vias B1, and metallic vias radius is RV.
Elementary cell 101 uses paster technique fixing on substrate 102, and substrate 102 is dielectric material substrate, dielectric material
The RO4003C material using thickness to be 0.813mm, its dielectric constant is 3.38.
Metal ground layer 103 is the metal ground layer being paved with good conductor.
The phase angle output area of described phase shifter is 0 °-180 °；In the present invention, the phase angle of phase shifter is output as
45 °, 60 °, 75 °, 90 °, 105 °, 120 ° and 135 °.
The method for designing of a kind of multichannel differential phase shifter: first, according to required centre frequency (this example be 3.6GHz) and
Relevant design formula determines the second transmission line the 202nd, transmission line I 301, transmission line II 302, transmission line III 303 and all loadings
The length and width of minor matters；Fix above parameter afterwards, according to required differential phase (this example is 45 °, 60 °, 75 °, 90 °,
105 °, 120 ° and 135 °), determine loading the first minor matters the 204th, the second minor matters on the corresponding delay line of each differential phase 200
205th, the position of the 3rd minor matters the 206th, the 4th minor matters the 206th, the 5th minor matters the 207th, the 6th minor matters 208 and the first transmission line the 201st, the 3rd
Length Ldelay of transmission line 203.
Above-mentioned each parameter is shown in Table 1:
Table 1
(a) preset parameter (unit: mm)
| W 0 | R v | W s1 | W s2 | W s3 | L s | L ref | W m1 | W m2 | L m3 |
| 1.8 | 0.2 | 1 | 2 | 1 | 5 | 9.15 | 3.8 | 3 | 10 |
(b) undetermined parameter
| Phase Shift | L m1 (mm) | L m2 (mm) | L delay (mm) |
| 135° | 3.5 | 5.5 | 0 |
| 120° | 4.34 | 4.64 | 1 |
| 105° | 5.17 | 3.83 | 2.05 |
| 90° | 6 | 3 | 3.15 |
| 75° | 6.84 | 2.16 | 3.95 |
| 60° | 7.67 | 1.33 | 4.75 |
| 45° | 8.5 | 0.5 | 5.6 |
With reference to Fig. 4 (emulation of differential phase shifter amplitude response and measurement result comparison diagram in the present embodiment).Arrive at 2.6 GHz
In the range of 4.6 5 GHz band (relative bandwidth 56%), its S11 is less than-10dB, and S21 is more than-0.7dB.With reference to Fig. 5 (the present embodiment
The emulation of middle differential phase shifter phase response and measurement result comparison diagram).In the range of 2.6 GHz to 4.6 5 GHz band, it can
Realize 45 ° ± 2.2 ° simultaneously, 60 ° ± 3.9 °, 70 ° ± 4.5 °, 90 ° ± 6.7 °, 105 ° ± 5.6 °, 120 ° ± 7 °,
The differential phase of 135 ° ± 10.2 °.
In above-mentioned Fig. 4 and Fig. 5, result is all RO4003C at baseplate material, and dielectric constant is 3.38, and substrate thickness is
Recorded by Network Analyzer under the true environment of 0.813mm.By above emulation and test comparison figure it is found that emulation and
The goodness of fit of measured curve is higher, indicates the solution of the present invention practical.
Wherein, the translator of English being marked in Fig. 4 is: S-parameters(S parameter), Frequency(frequency),
Simulated(emulate), Measured(measurement), the translator of English being marked in Fig. 5 is: Simulated(emulate),
Measured(measure), Phase difference(Degree) (phase difference/degree), Frequency(frequency).
It is above the provided embodiment to the present invention a kind of multichannel differential phase shifter to be discussed in detail.Use concrete herein
Principle and embodiment to the present invention for the individual example is illustrated, and the explanation of above example is only intended to help to understand the present invention's
Method and core concept thereof.
For one of ordinary skill in the art, according to the thought of the present invention, in specific embodiments and applications
All will change, to sum up, this specification content should not be construed as limitation of the present invention.
Claims (9)
1. a multichannel differential phase shifter, is characterized in that, including the three-decker arranged successively from top to bottom, wherein, ground floor
For being provided with the elementary cell (101) of delay line (200) and reference line (300), the second layer is substrate (102), and third layer is metal
Stratum (103)；
Described delay line (200) is by first transmission line (201) of Three-section cascaded, the second transmission line (202), the 3rd transmission line
(203) and load on six minor matters of the second transmission line (202) both sides and constitute, the respectively first minor matters (204), the second minor matters
(205), the 3rd minor matters (206), the 4th minor matters (206), the 5th minor matters (207), the 6th minor matters (208)；Wherein the first minor matters
(204), the second minor matters (205), the 3rd minor matters (206) are carried in the second transmission line (202) side, the 4th minor matters (206), the 5th
Minor matters (207), the 6th minor matters (208) are carried in the second transmission line (202) opposite side；Six minor matters are that parallel boot passes second
The both sides of defeated line (202)；
/ 2nd of a length of centre frequency corresponding wavelength of second transmission line (202), the first transmission line (201) and the first transmission
Line (203) is 50 transmission lines, splices in the second transmission line (202) two ends, and its length is equal；Six parallel minor matters length
Centered on frequency corresponding wavelength 1/8th, symmetrical two-by-two in the second transmission line (202) both sides, wherein the first minor matters
And the 4th minor matters (207) are symmetrical, the second minor matters (205) and the 5th minor matters (208) symmetry, the 3rd minor matters (206) and the 6th (204)
Minor matters (209) are symmetrical, and two symmetrical minor matters structures are completely the same.
2. multichannel differential phase shifter according to claim 1, is characterized in that, the 4th minor matters (207), the 5th minor matters (208),
6th minor matters (209) one end connects the second transmission line (202), and the other end is respectively by three metallic vias ground connection.
3. multichannel differential phase shifter according to claim 1, is characterized in that, six parallel minor matters are at the second transmission line
(202) loading position is calculated by the differential phase needing.
4. multichannel differential phase shifter according to claim 1, is characterized in that, described reference line (300) is by Three-section cascaded
Transmission line I (301), transmission line II (302), transmission line III (303) and the minor matters I loading on transmission line II (302) both sides
(304), minor matters II (305) are constituted；
/ 2nd of a length of centre frequency corresponding wavelength of described transmission line II (302), described transmission line I (301) and transmission
Line III (303) is 50 transmission lines, splices in transmission line II (302) two ends, and its length is equal；Described minor matters I (304), branch
Joint II (305) a length of centre frequency corresponding wavelength 1/8th, be positioned at transmission line II (302) center and in its both sides in
Symmetrical, and its structure is completely the same.
5. multichannel differential phase shifter according to claim 4, is characterized in that, described minor matters II (305) one end connects transmission
Line II (302), the other end is grounded by metallic vias B1.
6. multichannel differential phase shifter according to claim 1, is characterized in that, described elementary cell (101) uses paster work
Skill is fixed on substrate (102), and substrate (102) is dielectric material substrate, and it is 0.813mm's that dielectric material uses thickness
RO4003C material, its dielectric constant is 3.38.
7. multichannel differential phase shifter according to claim 1, is characterized in that, described metal ground layer (103) is for being paved with good leading
The metal ground layer of body.
8. multichannel differential phase shifter according to claim 1, is characterized in that, the phase angle output area of described phase shifter is
0°-180°。
9. the multichannel differential phase shifter according to any one of claim 1 to 8, is characterized in that, the phase angle of described phase shifter
It is output as 45 °, 60 °, 75 °, 90 °, 105 °, 120 ° and 135 °.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887678A (en) * | 2017-10-11 | 2018-04-06 | 电子科技大学 | A kind of design method of phase shifter |
| CN108808180A (en) * | 2018-06-08 | 2018-11-13 | 电子科技大学 | The phase shifter structure and mixer architecture of suspended substrate stripline are integrated based on medium |
| CN111244585A (en) * | 2020-01-17 | 2020-06-05 | 中山大学 | Differential phase shifter with filtering function |
| CN113161701A (en) * | 2021-04-06 | 2021-07-23 | 摩比天线技术（深圳）有限公司 | Phase shifter and base station antenna |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887678A (en) * | 2017-10-11 | 2018-04-06 | 电子科技大学 | A kind of design method of phase shifter |
| CN108808180A (en) * | 2018-06-08 | 2018-11-13 | 电子科技大学 | The phase shifter structure and mixer architecture of suspended substrate stripline are integrated based on medium |
| CN108808180B (en) * | 2018-06-08 | 2021-02-19 | 电子科技大学 | Phase shifter structure and mixer structure based on medium integrated suspension line |
| CN111244585A (en) * | 2020-01-17 | 2020-06-05 | 中山大学 | Differential phase shifter with filtering function |
| CN111244585B (en) * | 2020-01-17 | 2021-04-06 | 中山大学 | Differential phase shifter with filtering function |
| CN113161701A (en) * | 2021-04-06 | 2021-07-23 | 摩比天线技术（深圳）有限公司 | Phase shifter and base station antenna |
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Application publication date: 20161102 |