CN105390777A - Broadband substrate integrated waveguide (SIW) phase shifter loaded with rectangular air slots - Google Patents
Broadband substrate integrated waveguide (SIW) phase shifter loaded with rectangular air slots Download PDFInfo
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- CN105390777A CN105390777A CN201510897494.2A CN201510897494A CN105390777A CN 105390777 A CN105390777 A CN 105390777A CN 201510897494 A CN201510897494 A CN 201510897494A CN 105390777 A CN105390777 A CN 105390777A
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- siw
- branch road
- phase shifter
- air groove
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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
- H01P1/182—Waveguide phase-shifters
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Abstract
A phase shifter is one of key modules in microwave and millimeter wave circuit and system, and is widely applied to the aspects of phased array beam forming, orthogonal circuit design, instrument and equipment testing and the like. The invention proposes a substrate integrated waveguide (SIW) phase shifter loaded with rectangular air slots. The phase shifter comprises two typical SIW circuit structures of a branch circuit I and a branch circuit II. The branch circuit I corresponds to a referenced zero phase; and a plurality of rectangular air slots are formed in an SIW body in the circuit structure of the branch circuit II and correspond to required phase shifting degrees. The branch circuit II further comprises a one-side metalized dielectric PCB cover plate matched in size with the SIW body. Four metalized matching through holes are introduced in upper and lower parts of the edge, connected with the SIW body, of a gradual transition structure. The phase shifter realizes relatively wide frequency bandwidth and has relatively low insertion loss and fixed zero phase reference value; and the phase shifter can be conveniently integrated with other planar passive and active circuits, can be realized on a PCB and is relatively low in cost and convenient and reliable to machine.
Description
Technical field
Phase shifter is one of key modules in microwave and millimeter wave Circuits and Systems, and it is widely used in the aspects such as phased array beam formation, quadrature network design, tester equipment.Substrate integration wave-guide (SubstrateIntegratedWaveguide, the SIW) phase shifter loading rectangular air groove can be applied in substrate integration wave-guide (circuit), to realize global design and broadband phase shift function.
Technical background
Substrate integration wave-guide SIW is a kind of new microwave transmission line form, utilizes the metal throuth hole be produced on medium substrate to realize being similar to the field communication mode of metal waveguide.SIW is a kind of transmission line between micro-band and Filled Dielectrics metal waveguide, takes into account the advantage of conventional waveguide and microstrip transmission line, can realize high performance microwave and millimeter wave planar circuit version.
Phase shifter is a kind of very important microwave module, for adjusting the phase place of signal.The bandwidth of phase shifter is extremely crucial performance index, realizes the important directions that bandwidth wide is as far as possible research.On the other hand, the realization of broad-band phase shifter is more difficult, and the broad-band phase shifter especially realized in SIW is rare, and this has seriously limited the application of SIW in microwave and millimeter wave Circuits and Systems.Therefore it is very urgent to the demand of broad-band chip integrated waveguide phase shifter.
In existing research report, broadband type substrate integration wave-guide phase shifter mainly contains three kinds of modes and realizes.Researcher YuJianCheng realizes automatic compensating broadband phase shift function based on delay line and not wide SIW structure, see document Y.J.Cheng, W.Hong, K.Wu, " Broadbandself-compensatingphaseshiftercombiningdelayline andequal-lengthunequal-widthphaser; " IEEETransactionsonMicrowaveTheoryandTechniques, 2010,58 (1): 203-210.
Researcher T.Djerafi realizes variable artificial dielectric constant based on hole array, thus causes phase place change to realize phase shift function.See document T.Djerafi, K.Wu, S.O.Tatu, " Substrate-integratedwaveguidephaseshifterwithrod-loadeda rtificialdielectricslab; " ElectronicsLetters, 2015,51 (9): 707-709.
Researcher M.Ebrahimpouri devises embedded ' Ω ' shape micro-pattern, reduce device volume, but insertion loss is larger when ensureing broadband phase shift performance.See document M.Ebrahimpouri, S.Nikmehr, A.Pourziad, " BroadbandCompactSIWPhaseShifterUsingOmegaParticles; " IEEEMicrowaveandWirelessComponentsLetters, 2014,24 (11): 1-3.
In above three kinds of methods, for 45 ° of phase shift ranges, the phase shifter bandwidth that first method realizes is 50% (24 ~ 40GHz, 45 ° ± 3.5 °), the phase shifter bandwidth that second method realizes is 46.1% (20 ~ 32GHz, 45 ° ± 2.5 °), the phase shifter bandwidth that the third method realizes is about 60.2%, and (simulation result is 4.487 ~ 8.355GHz, 45 ° ± 2.5 °.Clearly do not provide measured result); For 90 ° of phase shift ranges, the phase shifter bandwidth that first method realizes is 45.1% (25.11 ~ 39.75GHz, 90 ° ± 2.5 °), the phase shifter bandwidth that second method realizes is 46.1% (20 ~ 32GHz, 89.5 ° ± 5 °).The phase shifter bandwidth that the third method realizes is about 55%, and (simulation result is 4.2 ~ 7.385GHz, 90 ° ± 3 °.Clearly do not provide measured result).
The first phase shifter realizes the self compensation of phase place based on delay line and not wide SIW structure, although have good amplitude-phase characteristic, but the phase reference of its reference is change, namely unfixing in theory zero phase reference value, can cause system to become complicated and redundancy due to multiple zero phase reference value in actual applications; The bandwidth of the second phase shifter need to improve within the scope of its phase shifting accuracy defined; The insertion loss of the third phase shifter is larger (about-5dB), and test bandwidth is narrower, and practicality remains to be discussed.These three kinds of methods have self limitation.
Summary of the invention
For above-mentioned existing problems or deficiency, in order to wider frequency bandwidth can be realized, there is again comparatively low insertion loss and constant zero reference phase, the present invention proposes a kind of broad-band chip integrated waveguide SIW phase shifter loading rectangular air groove.
This SIW phase shifter, comprise branch road one and the typical SIW circuit structure of branch road 2 two, its architectural feature is:
Branch road one corresponds to the zero phase of reference; SIW body in branch road two circuit structure is also provided with N number of rectangular air groove, corresponding to the required phase shift number of degrees, 0<N<30.
SIW body in each branch road is all connected by the transition structure of a gradual change with microstrip line, this gradual transition structure is connected respectively introducing up and down and mating through hole of limit with substrate integration wave-guide body, and metallize, amount to 4, and the geometric center of 4 coupling through holes overlaps with the geometric center of SIW main body.
Described rectangular air groove is arranged at vertical Electromagnetic Wave Propagation direction, and the arrangement of each rectangular air groove parallel equidistant; Ls2 is the total length of branch road two SIW body construction, Wc is the width of rectangular air groove, Ld is the spacing of adjacent rectangle air groove, Lc is the length of rectangular air groove, Ws2 is the line space of branch road two liang of row parallel via holes, and rectangular air groove up/down perforation, sidewall do not metallize and not crossing with parallel via holes; Wc<2mm, Lc<Ws2, N* (Ld+Wc)-Ld<Ls2.
Described branch road two also comprises an one-sided metallic medium PCB cover plate adapted with its SIW body size, and metallization face and the SIW body of this cover plate are close to, and cover all rectangular air grooves completely to prevent electromagnetic leakage.
The microstrip line length Lm2 of described branch road two is greater than the microstrip line length Lm1 of branch road one, and the SIW body width Ws2 of branch road two is greater than the SIW body width Ws1 of branch road one, to form the phase difference of two branch roads.
Length for branch road one and branch road two is respectively the microstrip line of Lm1 and Lm2, and its phase difference is:
Wherein ε
erepresent effective dielectric constant, it is dielectric-slab DIELECTRIC CONSTANT ε
r, the function of microstrip line live width and dielectric-slab thickness of slab.
For in branch road one and branch road two, width is respectively the substrate integrated wave guide structure of Ws1 and Ws2, and its phase difference is:
Wherein ε
eqrepresentative comprises the SIW structural equivalents dielectric constant of air groove, and it is dielectric-slab DIELECTRIC CONSTANT ε
rwith the function of air groove physical size.
The phase shift number of degrees that so phase shifter is total are:
For the given phase shift number of degrees, can the width Ws 1 of chosen in advance SIW and the length Ls1 of Ws2, SIW and Ls2, the physical size Lc of air groove, Ld and Wc, microstrip line length Lm1 and Lm2 is determined in through type (1)-(3).
The phase shift that phase shifter of the present invention utilizes the substrate integration wave-guide of equal length different in width, the rectangular air groove of the microstrip line of different length and loading realizes phase shifter, the phase-shift phase that first two measure produces is contrary with frequency change trend, and the rectangular air groove loaded can further compensating phase shift amount, therefore this triplicity is got up to carry out phase compensation.By regulating the position of the width of substrate integration wave-guide in phase shifter, the length of microstrip line, the size of rectangular air groove and coupling plated-through hole, realize different fixed skew and wider bandwidth of operation.
Beneficial outcomes of the present invention is:
1, there is very wide bandwidth of operation: 45 ° and 90 ° of phase shifters actual measurement bandwidth reach 59.6% (10.2 ~ 18.85GHz, 45 ° ± 2.5 °) and 62.3% (9.5 ~ 18.1GHz, 90 ° ± 5 °) respectively;
2, insertion loss is better than 1.6dB;
3, convenient and other planes are passive and active circuit is integrated;
4, realize in printed board, cost is lower, reliably easy to process.
Accompanying drawing explanation
Fig. 1 is the front view of embodiment of the present invention phase shifter branch road one;
Fig. 2 is the front view of embodiment of the present invention phase shifter branch road two;
Fig. 3 is the cover plate of embodiment of the present invention phase shifter branch road two;
Fig. 4 is the transformation parameter of the embodiment of the present invention;
Fig. 5 is the return loss of the embodiment of the present invention;
Fig. 6 is the phase difference of the embodiment of the present invention;
Reference numeral: microstrip line-1, gradual transition structure-2, SIW body-3, coupling through hole-4, plated-through hole-5, rectangular air groove-6.
Embodiment
The present invention loads the dielectric substrate of broad-band chip integrated waveguide phase shifter realization at RT/Duroid5880 of rectangular air groove, and this substrate relative dielectric constant is 2.2, and loss angle tangent is 0.0009, and thickness is 0.508mm.For realizing substrate integrated wave guide structure, processing two row plated-through hole; All process a coupling plated-through hole up and down at the contact edge of gradual transition structure and SIW body, amount to four, and the geometric center of four coupling through holes overlaps with the geometric center of substrate integration wave-guide main body.For 45 degree and 90-degree phase shifter, the SIW body of branch road two machined 13 matrix air grooves all separately, coordinate the medium PCB cover plate (metal covering of cover plate need with phase shifter surface close contact) of one-sided metallic, by electromagnetic field containment in substrate integration wave-guide.The maximum difference of phase shifter branch road one and branch road two is that the latter loads rectangular air groove on SIW body, and the former is an overall structure.
In the present embodiment, physical descriptor is defined as follows:
Be micro belt line width for branch road one: Wm1, Lm1 is the length of microstrip line, Lt1 is micro-gradual transition structure length taking SIW body to, Wt1 is the Breadth Maximum of transition structure, Ws1 is the vertical range of two row metal through holes in SIW structure, Ls1 is the total length of SIW body construction, Svp1 is the pitch of holes of plated-through hole, Dvp1 is the diameter of plated-through hole, Lx1 is the lateral separation of SIW body edges apart from coupling plated-through hole, and Ly1 is the fore-and-aft distance of the plated-through hole distance coupling plated-through hole forming SIW body;
Be micro belt line width for branch road two: Wm2, Lm2 is the length of microstrip line, Lt2 is micro-gradual transition structure length taking SIW body to, Wt2 is the Breadth Maximum of transition structure, Ws2 is the vertical range of two row metal through holes in SIW structure, Ls2 is the total length of SIW body construction, Svp2 is the pitch of holes of plated-through hole, Dvp2 is the diameter of plated-through hole, Lx2 is the lateral separation of SIW body edges apart from coupling plated-through hole, and Ly2 is the fore-and-aft distance of the plated-through hole distance coupling plated-through hole forming SIW body.Branch road two has rectangular air groove and metallization phase shifter cover plate, and Lc is the length of rectangular air groove, and Wc is the width of rectangular air groove, and Ld is the spacing of adjacent rectangle air groove, and L1 is the length of phase shifter cover plate, and L2 is the width of phase shifter cover plate.
Carry out after simulation optimization through electromagnetic simulation software AnsoftHFSS, obtain best parameter size, shown in table specific as follows:
Test result shows: within the scope of working frequency range, 45 degree and return loss corresponding to 90 degree of phase shifted branch are better than 15.8dB and 14.5dB respectively, insertion loss is all better than 1.6dB, and phase difference is respectively 45 ° ± 2.5 ° and 90 ° ± 5 °, and relative bandwidth reaches 59.6% and 62.3% respectively.
Claims (2)
1. load a broad-band chip integrated waveguide SIW phase shifter for rectangular air groove, comprise branch road one and the typical SIW circuit structure of branch road 2 two, its architectural feature is:
Branch road one corresponds to the zero phase of reference; SIW body in branch road two circuit structure is also provided with N number of rectangular air groove, corresponding to the required phase shift number of degrees, 0<N<30;
SIW body in each branch road is all connected by the transition structure of a gradual change with microstrip line, this gradual transition structure is connected respectively introducing up and down and mating through hole of limit with substrate integration wave-guide body, and metallize, amount to 4, and the geometric center of 4 coupling through holes overlaps with the geometric center of SIW main body;
Described rectangular air groove is arranged at vertical Electromagnetic Wave Propagation direction, and the arrangement of each rectangular air groove parallel equidistant; Ls2 is the total length of branch road two SIW body construction, Wc is the width of rectangular air groove, Ld is the spacing of adjacent rectangle air groove, Lc is the length of rectangular air groove, Ws2 is the line space of branch road two liang of row parallel via holes, and rectangular air groove up/down perforation, sidewall do not metallize and not crossing with parallel via holes; Wc<2mm, Lc<Ws2, N* (Ld+Wc)-Ld<Ls2;
Described branch road two also comprises an one-sided metallic medium PCB cover plate adapted with its SIW body size, and metallization face and the SIW body of this cover plate are close to, and cover all rectangular air grooves completely to prevent electromagnetic leakage;
The microstrip line length Lm2 of described branch road two is greater than the microstrip line length Lm1 of branch road one, and the SIW body width Ws2 of branch road two is greater than the SIW body width Ws1 of branch road one, to form the phase difference of two branch roads.
2. load the broad-band chip integrated waveguide SIW phase shifter of rectangular air groove as claimed in claim 1, it is characterized in that:
Length for branch road one and branch road two is respectively the microstrip line of Lm1 and Lm2, and its phase difference is:
Wherein ε
erepresent effective dielectric constant, it is dielectric-slab DIELECTRIC CONSTANT ε
r, the function of microstrip line live width and dielectric-slab thickness of slab;
For in branch road one and branch road two, width is respectively the substrate integrated wave guide structure of Ws1 and Ws2, and its phase difference is:
Wherein ε
eqrepresentative comprises the SIW structural equivalents dielectric constant of air groove, and it is dielectric-slab DIELECTRIC CONSTANT ε
rwith the function of air groove physical size;
The total phase shift number of degrees of phase shifter are:
For the given phase shift number of degrees, can the width Ws 1 of chosen in advance SIW and the length Ls1 of Ws2, SIW and Ls2, the physical size Lc of air groove, Ld and Wc, through type (1) ~ formula (3) determines microstrip line length Lm1 and Lm2.
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| CN201510897494.2A CN105390777B (en) | 2015-12-08 | 2015-12-08 | A kind of broad-band chip integrated waveguide SIW phase shifters for loading rectangular air slot |
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| CN105390777B CN105390777B (en) | 2018-05-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108520996A (en) * | 2018-05-29 | 2018-09-11 | 电子科技大学 | A kind of substrate integration wave-guide attenuator of surface patch resistance |
| CN108736120A (en) * | 2018-05-29 | 2018-11-02 | 电子科技大学 | One kind pasting resistive type half module substrate integrated wave guide attenuator based on surface |
| CN110098450A (en) * | 2019-04-12 | 2019-08-06 | 电子科技大学 | A kind of hollow substrate integration wave-guide phase shifter of equal length 3D |
| CN111883882A (en) * | 2020-08-06 | 2020-11-03 | 上海星申仪表有限公司 | Equal-length substrate integrated waveguide phase shifter |
Citations (2)
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| CN101465455A (en) * | 2009-01-06 | 2009-06-24 | 东南大学 | Basal lamina integrated waveguide compensation type wideband phase shifter |
| US20120280770A1 (en) * | 2011-05-06 | 2012-11-08 | The Royal Institution For The Advancement Of Learning/Mcgill University | Tunable substrate integrated waveguide components |
-
2015
- 2015-12-08 CN CN201510897494.2A patent/CN105390777B/en not_active Expired - Fee Related
Patent Citations (2)
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| CN101465455A (en) * | 2009-01-06 | 2009-06-24 | 东南大学 | Basal lamina integrated waveguide compensation type wideband phase shifter |
| US20120280770A1 (en) * | 2011-05-06 | 2012-11-08 | The Royal Institution For The Advancement Of Learning/Mcgill University | Tunable substrate integrated waveguide components |
Non-Patent Citations (3)
| Title |
|---|
| A. ALI 等: ""Novel Compact Waveguide-Based Composite Right/Left-Handed Phase Shifter with Arbitrary Phase Shift and Broad Bandwidth: Analysis and Design"", 《2009 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM》 * |
| ISRAËL BOUDREAU 等: ""Broadband Phase Shifter Using Air Holes in Substrate Integrated Waveguide"", 《2011 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST (MTT)》 * |
| MAHSA EBRAHIMPOURI 等: ""Broadband Compact SIW Phase Shifter Using Omega Particles"", 《IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108520996A (en) * | 2018-05-29 | 2018-09-11 | 电子科技大学 | A kind of substrate integration wave-guide attenuator of surface patch resistance |
| CN108736120A (en) * | 2018-05-29 | 2018-11-02 | 电子科技大学 | One kind pasting resistive type half module substrate integrated wave guide attenuator based on surface |
| CN108520996B (en) * | 2018-05-29 | 2020-02-14 | 电子科技大学 | Substrate integrated waveguide attenuator with surface adhered with resistor |
| CN110098450A (en) * | 2019-04-12 | 2019-08-06 | 电子科技大学 | A kind of hollow substrate integration wave-guide phase shifter of equal length 3D |
| CN111883882A (en) * | 2020-08-06 | 2020-11-03 | 上海星申仪表有限公司 | Equal-length substrate integrated waveguide phase shifter |
| CN111883882B (en) * | 2020-08-06 | 2021-11-16 | 上海星申仪表有限公司 | Equal-length substrate integrated waveguide phase shifter |
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