CN107134644A - The high-gain ME poles sub-antenna of double-deck micro-strip ridge gap waveguide feed - Google Patents
The high-gain ME poles sub-antenna of double-deck micro-strip ridge gap waveguide feed Download PDFInfo
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- CN107134644A CN107134644A CN201710307761.5A CN201710307761A CN107134644A CN 107134644 A CN107134644 A CN 107134644A CN 201710307761 A CN201710307761 A CN 201710307761A CN 107134644 A CN107134644 A CN 107134644A
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- antenna
- pcb board
- metal
- gap waveguide
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Abstract
The invention discloses a kind of high-gain ME poles sub-antenna of the double-deck micro-strip ridge gap waveguide feed based on PCB processing technologys.ME poles sub-antenna, including two layers of pcb board and intermediate air layer up and down, wherein two layers of pcb board is on intermediate layer specular and structure is identical up and down.A microband paste is printed at upper strata pcb board upper surface portion covering metal floor, lower surface center, and both sides equidistantly arrange equidistant arrangement small metal cylinders embedded in circular metal patch, pcb board and are grounded microband paste and circular metal patch.The antenna is fed using double-deck micro-strip ridge gap waveguide to extension microband paste and metal cylinder.In addition, ME poles sub-antenna is joined directly together with feeding gap waveguide, integrated design while antenna gain is improved, remains the compact of antenna structure.The antenna handling ease of the present invention, cost is low, can mass produce.
Description
Technical field
The present invention relates to a kind of millimeter wave antenna technology, particularly a kind of high increasing of double-deck micro-strip ridge gap waveguide feed
Beneficial ME poles sub-antenna.
Background technology
The features such as millimetre-wave radar has narrow bandwidth, wave beam, small volume, low in energy consumption and strong penetrability.Compared to laser
Infrared acquisition, the characteristics of its penetrability is strong can ensure that radar can be operated in fog precipitation snow and Sand Dust Environment, by weather
Influence is smaller；Compared to the radar of microwave band, using millimetre wavelength it is short the characteristics of can effectively reduce system bulk and again
Amount, and improve resolution ratio.These features cause millimetre-wave radar in automobile collision preventing, helicopter avoidance, cloud detection, missile-operation control etc.
Aspect has important application.In order to be accurately performed the measurement to key messages such as target object distance, speed, angles, milli
Metre wave radar needs a kind of low-loss, high-gain and wide band antenna element.
Document 1 (P.S.Kildal, E.Alfonso, A.Valero-Nogueira and E.Rajo-Iglesias, "
Local Metamaterial-Based Waveguides in Gaps Between Parallel Metal Plates,"in
IEEE Antennas and Wireless Propagation Letters, vol.8, no., pp.84-87,2009.) propose
A kind of novel transmission line --- gap waveguide, it has bandwidth of operation big, be lost it is low, it is simple in construction, up and down between metallic plate
Less demanding advantage is electrically connected, antenna extensively should to the high request of machining accuracy and dielectric loss when meeting high band
Used in millimeter wave band.
Document 2 (Kwai Man Luk, " Recent development of millimeter-wave magneto-
electric dipole,"2014IEEE International Workshop on Electromagnetics (iWEM),
Sapporo, 2014, pp.259-259.) propose a kind of ME poles sub-antenna.It is to be tied electric dipole and magnetic dipole
Close, it is separated by a distance by adjusting electric dipole and magnetic dipole, effectively control two signals of electric dipole and magnetic dipole
The phase and amplitude in source, so as to encourage electric dipole and magnetic dipole simultaneously, realizes electric dipole and magnetic dipole directional diagram
Complementation, so as to obtain wider bandwidth of operation and stable directional diagram.
Document 3 (Y.Li and K.M.Luk, " A Multibeam End-Fire Magnetoelectric Dipole
Antenna Array for Millimeter-Wave Applications,"in IEEE Transactions on
Antennas and Propagation, vol.64, no.7, pp.2894-2904, July 2016.) in propose by substrate
The mode that electrode is loaded on integrated waveguide realizes ME poles sub-antenna, and simple in construction, working band is wide, but is limited to SIW Jie
Matter is lost, and antenna gain is integrally relatively low.
From the foregoing, it will be observed that prior art realizes that millimeter wave ME poles sub-antenna has loss height, the low shortcoming of gain, it is not suitable for
In millimeter-wave automotive anti-collision radar system.Gap waveguide and ME poles sub-antenna are combined by the present invention, are that vehicle radar antenna is carried
A kind of new mentality of designing is supplied.
The content of the invention
Millimere-wave band can be operated in it is an object of the invention to provide one kind, based on the feedback of double-deck micro-strip ridge gap waveguide
The ME poles sub-antenna of electricity, it can significantly improve yield value of the antenna in required frequency.
The technical solution for realizing the object of the invention is：A kind of double-deck micro-strip ridge gap based on PCB processing technologys
The high-gain ME poles sub-antenna of waveguide feed, including two layers of pcb board and intermediate air layer up and down, wherein two layers of pcb board is closed up and down
In intermediate layer specular and structure is identical.Upper strata pcb board upper surface portion covering metal floor, lower surface center prints one
Microband paste, both sides equidistantly arrange equidistant arrangement small metal cylinders embedded in circular metal patch, pcb board and paste micro-strip
Piece and circular metal patch ground connection.Here, the circular metal patch of ground connection is referred to as AMC units.
The antenna is fed using double-deck micro-strip ridge gap waveguide to extension micro-strip ridge and metal cylinder.The present invention
In, the feeding gap waveguide plays cut-off using the equidistant arrangement AMC units of two layers of specular to electromagnetic wave so that
Electromagnetic wave is propagated along micro-strip coning row.Feeding gap waveguide is joined directly together with antenna, integrated design, in gap waveguide terminal
Extend microband paste certain length, and metal-loaded cylinder forms the ME poles sub-antenna of end-fire as radiation electrode.
The metal cylinder quantity being carried on extension microband paste is 4.
Pcb board selects Rogers RO4003 medium sheet materials, and overall dimensions are 3mm × 7.6mm rectangle, and its dielectric is normal
Number εr=3.55, loss tangent angle tan σ=0.0013, thickness h2=0.406mm.
Antenna intermediate air layer height h1=0.2mm；Upper strata pcb board upper surface metal floor size l3=4.1 mm, w2=
3mm；The specific size of AMC units is：Circular metal patch radius r1=0.2mm, round metal pillar height h2=0.406mm, radius r2=
With cycle g between 0.1mm, adjacent cellsp=0.5mm is arranged；Microband paste development length l1=1.8mm, wide wg=0.4mm, patch
Piece centre distance adjacent circular metal patch center of circle w1=0.5mm.
The edge of metal floor and the coincident of upper strata pcb board end.
Compared with prior art, its remarkable advantage is the present invention：1) double-deck micro-strip ridge gap waveguide proposed by the present invention
The AMC units equidistantly arranged using bilayer, structure is more symmetrical, and it is more preferable to end effect for electromagnetic wave.Therefore, in work frequency
Band is interior, and antenna radiation pattern more stablizes symmetrical, and maximum gain reaches 12dBi, and gain fluctuation is less than 3dB；2) it is proposed by the present invention
The ME poles sub-antenna of double-deck micro-strip ridge gap waveguide feed, feeding network and antenna integrated design, it is easy to integrated.Therefore,
While improving gain using gap waveguide feed, the integrally-built compact of antenna is realized, it is adaptable in aerial array.With
Double-layer gap waveguide, antenna element have high gain, with it is roomy, back lobe radiation is low the characteristics of；3) bilayer proposed by the present invention is micro-
The ME poles antenna fed with ridge gap waveguide, based on PCB technology processing, whole height is integrated, reduces processing cost, thus
It can mass produce.
Below in conjunction with the accompanying drawings to further detailed description of the present invention.
Brief description of the drawings
The ME poles sub-antenna structure chart that Fig. 1 feeds for the double-deck micro-strip ridge gap waveguide of the present invention, wherein figure (a) is three
Dimension figure, figure (b) is top view, and figure (c) is side view, and figure (d) is hierarchical diagram.
The reflectance factor and gain curve for the ME poles sub-antenna that Fig. 2 feeds for the double-deck micro-strip ridge gap waveguide of the present invention.
When Fig. 3 is operated in centre frequency 94GHz for the ME poles sub-antenna of the double-deck micro-strip ridge gap waveguide feed of the present invention
Antenna pattern.
Embodiment
A kind of high-gain ME poles sub-antenna of double-deck micro-strip ridge gap waveguide feed, including upper strata pcb board 1, middle sky
Gas-bearing formation 2 and lower floor's pcb board 3, the upper strata pcb board 1 and lower floor's pcb board 3 are on intermediate air 2 specular of layer and structure phase
Together, the portion of upper surface covering metal floor 4 of its pcb board 1 at the middle and upper levels, a micro-strip is printed at the lower surface center of upper strata pcb board 1
Paster 5, the lower surface of upper strata pcb board 1 sets some circular metal patch 6, and the circular metal patch 6 is located at metal floor 4
The view field of the lower surface of PCB plates 1 on upper strata, the circular metal patch 6 is located at the both sides of microband paste 5 and spaced set,
It is respectively provided with each circular metal patch 6 on small metal cylinders 7, microband paste 5 and is also provided with some small metal cylinders 7, it is all
The equal spaced set of small metal cylinders 7, microband paste 5 and circular metal patch 6 are grounded by the small metal cylinders 7, described to connect
The circular metal patch on ground is AMC units.
The microband paste 5 is on extension microband paste, extension microband paste beyond the part of the view field of metal floor 4
4 metal cylinders equidistantly arranged are set.
The upper strata pcb board 1 and lower floor's pcb board 3 select Rogers RO4003 medium sheet materials, and overall dimensions are 3mm
× 7.6mm rectangle, its permittivity εr=3.55, loss tangent angle tan σ=0.0013, thickness h2=0.406mm.
The height h of the antenna intermediate air layer 21=0.2mm；The size l of 1 upper surface metal floor of upper strata pcb board 43=
4.1mm, w2=3mm；The radius r of circular metal patch 61=0.2mm, the high h of metal cylinder 72=0.406 mm, radius r2=
Spacing between 0.1mm, adjacent cells is 0.5mm；The development length l of microband paste 51=1.8 mm, wide wg=0.4mm, micro-strip patch
The center of circle w of 5 centre distance adjacent circular metal patch of piece 61=0.5mm.
The edge of the metal floor 4 and the coincident of the end of upper strata pcb board 1.
The ME poles sub-antenna of double-deck micro-strip ridge gap waveguide feed proposed by the present invention, feeding network and antenna integrated
Design, it is easy to integrated.Therefore, while improving gain using gap waveguide feed, the integrally-built compact of antenna is realized,
Suitable for aerial array.
Further detailed description is done to the present invention with reference to embodiment.
Embodiment 1
With reference to Fig. 1, the high-gain that a kind of double-deck micro-strip ridge gap waveguide based on PCB processing technologys of the invention is fed
ME poles sub-antenna, including upper strata pcb board 1, intermediate air layer 2 and lower floor's pcb board 3, wherein two layers of pcb board is on middle empty up and down
Gas-bearing formation specular and structure is identical.Upper strata pcb board includes metal floor 4, the printing of lower surface center that upper surface portion is covered
Microband paste 5, a both sides equidistantly arrange in circular metal patch 6, pcb board embedded equidistant arrangement metal cylinder 7.
Here, it is mono- that the ground connection circular metal patch that metal floor 4, circular metal patch 6, metal cylinder 7 are collectively constituted is referred to as AMC
Member.
ME poles sub-antenna is mainly made up of the microband paste and metal cylinder extended, using double-deck micro-strip ridge gap waveguide
Antenna is fed, feeding gap waveguide is joined directly together with antenna, integrated design.Opening terminal of Double-layer gap waveguide etc.
The magnetic dipole radiation for horizontal direction is imitated, the small metal cylinders being carried on extension microband paste are equivalent to the electricity of vertical direction
Dipole radiation.In the present invention, the feeding gap waveguide is using the equidistant arrangement AMC units of two layers of specular to electromagnetism
Ripple plays cut-off so that electromagnetic wave is propagated along metal micro-strip.Because small metal cylinders are connected with extension microband paste,
It is coupled to along the portion of energy that metal micro-strip is propagated in small metal cylinders, has encouraged electric dipole.The opening of Double-layer gap waveguide
Terminal and small metal cylinders complementation are radiated as ME extremely sons.
The metal cylinder quantity being carried on extension microband paste is 4.
Upper strata pcb board 1, lower floor's pcb board 3 select Rogers RO4003 medium sheet materials, overall dimensions be 3 mm ×
7.6mm rectangle, its permittivity εr=3.55, loss tangent angle tan σ=0.0013, thickness h2=0.406 mm.
2 height h of antenna intermediate air layer1=0.2mm；The size l of upper strata pcb board upper surface metal floor 43=4.1 mm, w2
=3mm；The radius r of circular metal patch 61=0.2mm, the high h of metal cylinder 72=0.406mm, radius r2=0.1mm, adjacent list
With cycle g between memberp=0.5mm is arranged；The development length l of microband paste 51=1.8 mm, wide wg=0.4mm, paster centre-to-centre spacing
From adjacent circular metal patch center of circle w1=0.5mm.
Embodiment 2
Integrated antenna size is 3mm × 7.6mm rectangle.
With reference to Fig. 1, the ME poles sub-antenna of present invention bilayer micro-strip ridge gap waveguide feed mainly includes upper strata pcb board
1st, intermediate air layer 2, lower floor's pcb board 3, PCB dielectric materials select thickness h2=0.406mm Rogers RO4003 dielectric-slabs
Material (relative dielectric constant εr=3.55, loss tangent angle tan σ=0.0013), 2 height h of intermediate air layer1=0.2mm；Pcb board
4 size l of surface metal ground3=4.1mm, w2=3mm；The radius r of circular metal patch 61=0.2mm, the high h of metal cylinder 72=
0.406mm, radius r2=0.1mm, the circular metal patch 6 is located at projection of the metal floor 4 in the lower surface of upper strata pcb board 1
It is respectively provided with region, each circular metal patch 6 on small metal cylinders 7, microband paste 5 and is also provided with some small metal cylinders 7,
The small column of view field constitutes 5*8 matrixes.Metal 4, the ground connection that collectively constitutes of circular metal patch 6, metal cylinder 7 it is circular
It is 0.5mm that metal patch structure, which is referred to as spacing between AMC units, adjacent cells,；The width of metal micro-strip paster 5 wg=0.4mm,
Development length l1=1.8mm；The adjacent AMC unit centers w of centre distance1=0.5mm.
With reference to Fig. 2, the ME poles sub-antenna unit of present invention bilayer micro-strip ridge gap waveguide feed, reflectance factor less than-
10dB working band is 83GHz~118GHz, and relative bandwidth is 37.2%, and maximum gain can reach 12dBi, and gain ripple
It is dynamic to be less than 3dB.
With reference to Fig. 3, the ME poles sub-antenna that present invention bilayer micro-strip ridge gap waveguide is fed is operated in E faces during 94GHz
There is good symmetry with H faces normalized radiation pattern, the half-power beam width in antenna E faces and H faces is respectively 70 ° and 50 °.
The ME poles antenna of double-deck micro-strip ridge gap waveguide feed proposed by the present invention is overall high based on PCB technology processing
Degree is integrated, reduces processing cost, thus can mass produce.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (5)
1. a kind of high-gain ME poles sub-antenna of double-deck micro-strip ridge gap waveguide feed, it is characterised in that including upper strata pcb board
[1], intermediate air layer [2] and lower floor's pcb board [3], the upper strata pcb board [1] and lower floor's pcb board [3] are on intermediate air layer
[2] specular and structure is identical, the portion of upper surface covering metal floor [4] of its pcb board [1] at the middle and upper levels, upper strata pcb board
[1] microband paste [5] is printed at lower surface center, and the lower surface of upper strata pcb board [1] sets some circular metal patch
[6], the circular metal patch [6] is located at metal floor [4] in the view field of upper strata pcb board [1] lower surface, the circle
It is small that metal patch [6] is respectively provided with metal on microband paste [5] both sides and spaced set, each circular metal patch [6]
It is also provided with some small metal cylinders [7] on cylinder [7], microband paste [5], all small metal cylinders [7] spaced sets,
Microband paste [5] and circular metal patch [6] are grounded by the small metal cylinders [7], and the circular metal patch of the ground connection is
AMC units.
2. the high-gain ME poles sub-antenna of double-deck micro-strip ridge gap waveguide feed according to claim 1, its feature exists
In microband paste [5] is to set 4 on extension microband paste, extension microband paste beyond the part of metal floor [4] view field
The individual metal cylinder equidistantly arranged.
3. the high-gain ME poles sub-antenna of double-deck micro-strip ridge gap waveguide feed according to claim 1, its feature exists
In the upper strata pcb board [1] and lower floor's pcb board [3] select Rogers RO4003 medium sheet materials, and overall dimensions are 3mm
× 7.6mm rectangle, its permittivity εr=3.55, loss tangent angle tan σ=0.0013, thickness h2=0.406mm.
4. the high-gain ME poles sub-antenna of double-deck micro-strip ridge gap waveguide feed according to claim 1, its feature exists
In the height h of antenna intermediate air layer [2]1=0.2mm；Upper strata pcb board [1] upper surface metal floor [4] size l3=
4.1mm, w2=3mm；Circular metal patch [6] radius r1=0.2mm, metal cylinder [7] high h2=0.406mm, radius r2=
Spacing between 0.1mm, adjacent cells is 0.5mm；Microband paste [5] development length l1=1.8mm, wide wg=0.4mm, micro-strip
Paster [5] centre distance adjacent circular metal patch [6] center of circle w1=0.5mm.
5. the high-gain ME poles sub-antenna of double-deck micro-strip ridge gap waveguide feed according to claim 1, its feature exists
In the edge of metal floor [4] and the coincident of upper strata pcb board [1] end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307761.5A CN107134644A (en) | 2017-05-04 | 2017-05-04 | The high-gain ME poles sub-antenna of double-deck micro-strip ridge gap waveguide feed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307761.5A CN107134644A (en) | 2017-05-04 | 2017-05-04 | The high-gain ME poles sub-antenna of double-deck micro-strip ridge gap waveguide feed |
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| Publication Number | Publication Date |
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| CN107134644A true CN107134644A (en) | 2017-09-05 |
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| CN201710307761.5A Pending CN107134644A (en) | 2017-05-04 | 2017-05-04 | The high-gain ME poles sub-antenna of double-deck micro-strip ridge gap waveguide feed |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111630721A (en) * | 2018-01-22 | 2020-09-04 | 京瓷株式会社 | Repeater |
| US11201119B2 (en) | 2018-06-06 | 2021-12-14 | At&S Austria Technologie & Systemtechnik Aktiengesellschaft | RF functionality and electromagnetic radiation shielding in a component carrier |
-
2017
- 2017-05-04 CN CN201710307761.5A patent/CN107134644A/en active Pending
Non-Patent Citations (6)
| Title |
|---|
| FANGFANG FAN: "Half-height Pins–a New Pin Form in Gap", 《2016 10TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP)》 * |
| G. GOUSSETIS: "MODELLING, DESIGN AND FILTER APPLICATIONS OF AN", 《2006 IET SEMINAR ON METAMATERIALS FOR MICROWAVE AND (SUB) MILLIMETREWAVE APPLICATIONS》 * |
| HASAN RAZA, JIAN YANG: "Microstrip-Ridge Gap Waveguide–Study of Losses, Bends, and Transition to WR-15", 《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》 * |
| MILAD SHARIFI SORKHERIZI AND AHMED A. KISHK: "Fully Printed Gap Waveguide With Facilitated Design Properties", 《IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS》 * |
| PARASTOO TAGHIKHANI: "High Gain V-Band Planar Array Antenna Using", 《2017 11TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP)》 * |
| YUJIAN LI: "A Multibeam End-Fire Magnetoelectric Dipole Antenna Array for Millimeter-Wave Applications", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111630721A (en) * | 2018-01-22 | 2020-09-04 | 京瓷株式会社 | Repeater |
| US11201119B2 (en) | 2018-06-06 | 2021-12-14 | At&S Austria Technologie & Systemtechnik Aktiengesellschaft | RF functionality and electromagnetic radiation shielding in a component carrier |
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