CN105514600A - Carinal cavity gap circularly polarized antenna adopting half module substrate integrated waveguide - Google Patents

Carinal cavity gap circularly polarized antenna adopting half module substrate integrated waveguide Download PDF

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Publication number
CN105514600A
CN105514600A CN201610080271.1A CN201610080271A CN105514600A CN 105514600 A CN105514600 A CN 105514600A CN 201610080271 A CN201610080271 A CN 201610080271A CN 105514600 A CN105514600 A CN 105514600A
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China
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hmsiw
antenna
gap
semi
circular
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CN201610080271.1A
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CN105514600B (en
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王海明
无奇
余晨
洪伟
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Southeast University
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Southeast University
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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
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/06—Waveguide mouths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas

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  • Waveguide Aerials (AREA)

Abstract

The invention discloses a circularly polarized carinal cavity gap antenna adopting half module substrate integrated waveguide as a feeder line and a carinal cavity. The circularly polarized carinal cavity gap antenna is mainly composed of the half module substrate integrated waveguide carinal cavity, a feeder line and a gap radiation unit. The circularly polarized antenna has the advantages of being simple in design step, controllable in axial ratio performance, small in size, large in standing wave bandwidth and the like at work frequency points.

Description

A kind of gap, back of the body chamber circular polarized antenna adopting half module substrate integrated wave guide
Technical field
The present invention relates to the circular polarization back of the body chamber slot antenna that a kind of application prospect adopts HMSIW (Half-modeSubstrateIntegratedWaveguide, half module substrate integrated wave guide) technology widely, belong to antenna technical field.
Background technology
Antenna is the important component part of wireless communication system.The fast development of radio communication, little to volume, cost is low, high-gain and antenna easy of integration produce active demand.Traditional cavity-backed radiator antenna has the advantage such as high-gain, low front and back ratio, but also has that volume is excessive, the not easily shortcoming such as integrated with planar circuit.
Circular polarized antenna can receive any polarized electromagnetic wave from any antenna, effectively can improve reception and radiation efficiency, is therefore widely used in actual interference and electronic reconnaissance.Circular polarized antenna can utilize the multiple antenna form such as horn antenna, microstrip antenna or cavity-backed radiator antenna to realize.Along with the fast development of Modern wireless communication, simple to structure, be easy to Planar integration, size is little, design difficulty is little, standing wave band is wide circular polarized antenna unit creates very large demand.
Summary of the invention
Goal of the invention: the present invention adopts HMSIW technology, provide a kind of can meet wireless communication system needs, can be applicable to microwave and millimeter wave frequency range, be easy to design and processing, be easy to Planar integration, size is little, standing wave bandwidth is wider flat circle polarization cavity-backed radiator antenna.By exciting the semi-circular shape gap on semicircle resonant cavity surface, and the edge of HMSIW carries out radiation, has encouraged required circular polarization radiation in far field.This antenna have gain high, be easy to Planar integration, the advantage such as size is little, standing wave bandwidth is wider, simplicity of design.
Technical scheme: a kind of gap, back of the body chamber circular polarized antenna adopting half module substrate integrated wave guide, comprises the semicircle gap radiation unit that the feeder line be made up of HMSIW, the semi-circular shape be made up of HMSIW back of the body chamber and semi-circular shape carry on the back front, chamber.
Described feeder line and semicircle back of the body chamber form by metal throuth hole, and its size is relevant with the operating frequency of antenna.
Antenna to HMSIW cavity feed, selects main mould half TM by feed probes 010mould is the mode of operation of semicircle HMSIW resonant cavity, by outer radius in formulae discovery semi-circular shape gap,, the semicircular structure having encouraged the semicircular patch of semi-circular shape gap and its inside to form at the difference resonance of required frequency both sides frequency, the broadening standing wave bandwidth of antenna.In conjunction with semicircular structure with the metal edge of HMSIW at the resonance of identical frequency, forming two orthogonal, phase differences is 90 oelectric field, obtain the circular polarization radiation characteristic of structure at this frequency place.Best axial ratio performance can being obtained at required frequency by the size in simulated trim semi-circular shape gap, obtaining best return loss performance by regulating matching network at required frequency.
Beneficial effect: compared with existing traditional cavity-backed radiator antenna, gap, the back of the body chamber circular polarized antenna tool of employing half module substrate integrated wave guide provided by the invention has the following advantages:
1) this antenna adopts HMSIW technology as the feeder line of antenna and back of the body chamber, while remaining traditional cavity-backed radiator antenna advantage, brings planar structure, is easy to integrated, processes the advantages such as simple.Compare and traditional SIW cavity-backed radiator antenna, decrease the size close to 50%.
2) this antenna adopts the semicircular structure that open semicircle annulus, semicircle resonant cavity surface is formed, and the metal edge of HMSIW is as radiating element, utilize the metal edge radiation formation two of semi-circular shape gap and HMSIW orthogonal, phase difference is 90 oelectric field, far field formed circular polarization radiation.
3) semicircular structure that the semi-circular shape gap that this antenna adopts is formed brings better resonance characteristic, by introducing two resonance points, and the broadening standing wave bandwidth of antenna.
Accompanying drawing explanation
Fig. 1 is the vertical view of inventive antenna;
Fig. 2 is the side sectional view of inventive antenna;
Fig. 3 is the schematic diagram of standing-wave ratio of the present invention with frequency change;
Fig. 4 is gain of the present invention and the axial ratio schematic diagram with frequency change;
Fig. 5 is that the present invention is at the emulation at 28GHz place and actual measurement directional diagram;
Fig. 6 is that the present invention is at the emulation at 28GHz place and actual measurement directional diagram.
Embodiment
Below in conjunction with specific embodiment, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
This circular polarization back of the body chamber slot antenna carries on the back chamber by half module substrate integrated wave guide and semi-circular shape gap radiation unit is formed.This antenna adopts single-layer printed circuit plate (PrintedCircuitBoard, PCB) processes.
Fig. 1 is the vertical view of circular polarization of the present invention back of the body chamber slot antenna.Plated-through hole is all by the circle that oblique line is filled in figure, multiple first metal throuth hole 5 and multiple second metal throuth hole 4 is wherein utilized to form semicircle back of the body chamber and the feeder line of HMSIW, the L shape that multiple second metal throuth hole 4 in left side arranges is the feeder line part of SIW, feeder line feedline circuit also comprises match circuit, and match circuit is made up of two the 4th metal throuth holes 3; The SIW circular resonant chamber of right side for being made up of multiple first plated-through hole 5, through-hole diameter is d, and spacing is p; Antenna by feed probes to HMSIW cavity feed, the 3rd metal throuth hole 2 be distributing point, carry out feed by connecing coaxial fitting at bottom, its distance departing from HMSIW coating metal edge is w 1; 4th metal throuth hole 3 is match circuit, is made up of in this design two metal throuth holes, and the distance that the metal throuth hole at its window place departs from HMSIW resonant cavity edge through hole is w 2, match circuit is in order to improve the matching properties of antenna.The radius in circular resonant chamber is r 3, it is operated in half TM 010pattern, the radius r of resonant cavity 3follow following formula:
f 010 = cp 01 2 πr 3 ϵ r μ r (formula 1)
Wherein, f 010the frequency of position resonant cavity work, the operating frequency of the antenna namely designed; C is the light velocity in vacuum; ε rfor the relative dielectric constant of medium; μ rfor the relative permeability of medium.
In Fig. 1, white unmarked part represents the metal level on HMSIW surface.The radiating element of the semi-circular shape structure formed with the edge 6 of semi-circular shape gap 1 and HMSIW cavity, antenna can realize right-handed circular polarization radiation; If the semicircle of semi-circular shape gap 1 and HMSIW is carried on the back chamber, by edge 6 specular of HMSIW cavity, the antenna of formation can realize left-hand circular polarization radiation.The gray shade surrounded by solid black lines that label 1 in figure points to, represents the semi-circular shape gap radiation unit eroded away by PCB technology at HMSIW housing surface, and the medium of PCB lamina surface exposure.Wherein, r is respectively by the internal diameter and external diameter of cutting out semi-circular shape gap 2and r 1; The fore-and-aft distance of its distance match circuit 3 is l 1, the fore-and-aft distance of distance distributing point 2 is l 2.The equivalent redius radius r in semi-circular shape gap efollow following formula:
f c p = 1.4 c 2 πr e ϵ e (formula 2)
Wherein, f cpsemi-circular shape structure has operating frequency during circular polarization radiation performance; r efor the equivalent redius in semi-circular shape gap, i.e. r e=(r 1+ r 2)/2; ε efor the effective dielectric constant of HMSIW cavity, i.e. ε e=(ε e+ 1)/2.
Fig. 2 is the side sectional view of circular polarization of the present invention back of the body chamber slot antenna.Wherein, label 7 and 11 is respectively the upper lower metal layer of antenna, and label 8 is for corroding the semi-circular shape gap radiation unit in upper metal layers 7.The region of being filled by gray shade representated by label 12 is the dielectric layer of antenna, and it is highly h.With solid line surround oblique line fill area be all plated-through hole, wherein, middle plated-through hole is the 3rd plated-through hole 2 for antenna feed, and the plated-through hole of both sides is the first plated-through hole 5 and the second plated-through hole 4 forming HMSIW resonant cavity and feeder line.
Adopt electromagnetic simulation software to be optimized antenna size, obtain antenna size parameter as shown in table 1.The meaning of each parameter representative illustrates above.
Tested object is that the circular polarization HMSIW being operated in 28GHz utilizing PCB technology to realize carries on the back chamber slot antenna.Test result as shown in figures 3 to 6.Fig. 3 is the schematic diagram of standing-wave ratio of the present invention with frequency change; The gain of the present invention of Fig. 4 position and axial ratio are with the schematic diagram of frequency change; Fig. 5 is the actual measurement directional diagram of the present invention at the XZ axle at 28GHz place, and Fig. 6 is the actual measurement directional diagram of the present invention at the YZ axle at 28GHz place.
Table 1
Parameter Numerical value (mm) Parameter Numerical value (mm)
r 1 1.99 w 1 0.30
r 2 1.79 w 2 1.10
r 3 2.66 p 0.50
l 1 3.52 h 0.51
l 2 5.02 d 0.30

Claims (4)

1. adopt gap, a back of the body chamber circular polarized antenna for half module substrate integrated wave guide, it is characterized in that: comprise the feeder line be made up of HMSIW, the semicircle be made up of HMSIW back of the body chamber and the circular semi-circular shape gap radiation unit carrying on the back front, chamber;
Antenna carries out feed by the 3rd metal throuth hole (2) to HMSIW cavity, utilizes multiple first metal throuth hole (5) and multiple second metal throuth hole (4) to form the back of the body chamber of HMSIW; Using the edge (6) of semi-circular shape gap (1) and HMSIW cavity as semi-circular shape gap radiation unit, antenna can realize right-handed circular polarization radiation.
2. gap, the back of the body chamber circular polarized antenna adopting half module substrate integrated wave guide as claimed in claim 1; it is characterized in that: if the semicircle of semi-circular shape gap (1) and HMSIW is carried on the back chamber; by edge (6) specular of HMSIW cavity, the antenna of formation can realize left-hand circular polarization radiation.
3. gap, the back of the body chamber circular polarized antenna adopting half module substrate integrated wave guide as claimed in claim 1, it is characterized in that: the feeder line be made up of HMSIW and semicircle are carried on the back in chamber, described feeder line and semicircle back of the body chamber form by metal throuth hole, multiple first metal throuth hole (5) forms semicircle back of the body chamber, and feedline circuit also comprises match circuit; The L shape wherein arranged by multiple second metal throuth hole (4) forms feeder line, and the match circuit be made up of two the 4th metal throuth holes (3), in order to improve the matching properties of antenna.
4. gap, the back of the body chamber circular polarized antenna adopting half module substrate integrated wave guide as claimed in claim 1, is characterized in that: the radiating element in HMSIW circle back of the body front, chamber, is made up of semi-circular shape gap radiation and the fringe radiation of HMSIW cavity; The size of semi-circular shape slot element is relevant with the operating frequency of antenna.
CN201610080271.1A 2016-02-04 2016-02-04 A kind of back chamber gap circular polarized antenna using half module substrate integrated wave guide Active CN105514600B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108963463A (en) * 2018-06-13 2018-12-07 东南大学 A kind of broadband half module substrate integrated wave guide back chamber slot antenna
CN108987912A (en) * 2018-06-13 2018-12-11 东南大学 A kind of broadband planar substrate integrated waveguide back cavity slot antenna that five die workers makees

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CN103840271A (en) * 2014-02-27 2014-06-04 南京信息职业技术学院 Multi-band frequency antenna with cavity-backed type half-mode substrate integrated waveguide and bent slots
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108963463A (en) * 2018-06-13 2018-12-07 东南大学 A kind of broadband half module substrate integrated wave guide back chamber slot antenna
CN108987912A (en) * 2018-06-13 2018-12-11 东南大学 A kind of broadband planar substrate integrated waveguide back cavity slot antenna that five die workers makees
CN108987912B (en) * 2018-06-13 2020-06-16 东南大学 Five-mode working broadband planar substrate integrated waveguide back cavity slot antenna

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