CN109216929A - Broad-band slot coupling multilayer microstrip antenna based on feeding substrate integrated waveguide - Google Patents
Broad-band slot coupling multilayer microstrip antenna based on feeding substrate integrated waveguide Download PDFInfo
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- CN109216929A CN109216929A CN201810874543.4A CN201810874543A CN109216929A CN 109216929 A CN109216929 A CN 109216929A CN 201810874543 A CN201810874543 A CN 201810874543A CN 109216929 A CN109216929 A CN 109216929A
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- medium substrate
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- patch
- feed structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
- H01Q9/0457—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means electromagnetically coupled to the feed line
-
- 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 broad-band slot coupling multilayer microstrip antenna based on feeding substrate integrated waveguide, mainly solves the problems, such as that existing microstrip antenna narrow bandwidth, gain stability are poor.The antenna includes parasitic patch (1), first medium substrate (2), primary radiation patch (3), second medium substrate (4), upper floor (5), feed structure (6) and lower floor (7)；Parasitic patch (1) is located at the lower surface of first medium substrate (2), primary radiation patch (3) is located at the upper surface of second medium substrate (4), upper floor (5) is located at the upper surface of feed structure (6), and lower floor (7) is located at the lower surface of feed structure (6)；Longitudinal slot (51) are etched in upper floor (5), for coupling energy from feed structure (6)；It is provided with air layer between parasitic patch (1) and primary radiation patch (3), for broadening the beamwidth of antenna.The present invention improves bandwidth of operation and gain stability, can be applied to 5G communication and radar system.
Description
Technical field
The invention belongs to antenna technical fields, further relate to a kind of broad band multilayer microstrip antenna, can be used for 5G communication
And radar system.
Background technique
Substrate integration wave-guide uses printing board PCB technique or low-temperature co-fired ceramics LTCC technique etc., in dielectric substrate
It is upper to form the parallel plated-through hole of compact arranged two column, due to through-hole spacing very little, so as to which electromagnetic wave is limited in
To preceding propagation in a certain range, so that it may form the planar waveguiding structure of similar mediums filling waveguide.It is with small in size, weight
Gently, it is processed convenient for PCB technology, processing cost is low, is easy to the advantage integrated with microwave&millimeter-wave IC, has been supplied at present
Field of antenna.
Conventional microstrip antenna limits the extension of its frequency band since quality factor are excessively high, and the beamwidth of antenna can only achieve 1%-
5% or so, impedance bandwidth is small, limits the practical ranges of microstrip antenna.5G communications band develops to millimeter wave at this stage,
It is required that antenna has gain stabilization in wider bandwidth and bandwidth.Therefore, the antenna of broadband and gain stabilization becomes research at present
Hot spot.Antenna frequency band is broadened mainly include the following types: increasing the thickness of medium；Using the thick dielectric layer of low-k；Patch
Piece surface fluting；Additional impedance matching network.Although these methods can broaden the beamwidth of antenna, aerial band may result in
Gain penalty in width, and some problems are come to feed strip.
Paper " the Wide-Bandwidth 60-GHz Aperture-Coupled that Wael M.Abdel-Wahab is delivered
In Microstrip Patch Antennas (MPAs) Fed by Substrate Integrated Waveguide (SIW) "
Propose a kind of broad-band slot coupled patch of feeding substrate integrated waveguide, by using feeding substrate integrated waveguide and
Slot-coupled increases the bandwidth of antenna, but the relative bandwidth of antenna is only 24.1%, and gain is not sufficiently stable in bandwidth.
Summary of the invention
It is an object of the invention in view of the above shortcomings of the prior art, according to waveguide slot coupling theory, propose substrate
The broad-band slot coupling multilayer microstrip antenna of integrated waveguide feed improves gain in bandwidth to further increase bandwidth of operation
Stability.
To achieve the above object, the broad-band slot coupling multilayer micro-strip day of the invention based on feeding substrate integrated waveguide
Line, comprising: parasitic patch 1, first medium substrate 2, primary radiation patch 3, second medium substrate 4, upper floor 5, feed structure 6
With lower floor 7；Parasitic patch 1 is located at the lower surface of first medium substrate 2, and primary radiation patch 3 is located at second medium substrate 4
Upper surface, upper floor 5 are located at the upper surface of feed structure 6, and lower floor 7 is located at the lower surface of feed structure 5, and feature exists
In:
It is etched with longitudinal slot 51 in the upper floor 5, for coupling energy from feed structure 6；
It is provided with air layer between the parasitic patch 1 and primary radiation patch 3, for broadening the beamwidth of antenna.
Further, the feed structure 6 includes signal transmission passage 61, matches metal column 62 and third medium substrate 63,
The inside of third medium substrate 63 is arranged in matching metal column 62；Signal transmission passage 61 is made of four boundaries up and down,
Up-and-down boundary is made of metal throuth hole that is two rows of parallel and penetrating through third medium substrate 63, and left border is set as the input of signal
Port, right side boundary is made of vertical row's metal throuth hole, and is set as short-circuit port.
Compared with the prior art, the present invention has the following advantages:
First, the present invention enables antenna to work due to being provided with air layer between parasitic patch and primary radiation patch
Multiple modes of resonance, have broadened the beamwidth of antenna；
Second, the present invention in upper floor due to being etched with transverse slot for coupling energy to main spoke from feed structure
Patch is penetrated, feed structure is simple, to save processing cost.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is first medium substrate, second medium substrate and the paster structure schematic diagram in the present invention；
Fig. 3 is the feed structure schematic diagram in the present invention；
Fig. 4 is the return loss of the embodiment of the present invention with frequency variation curve figure；
Fig. 5 is the gain of the embodiment of the present invention with frequency variation curve figure.
Specific embodiment
In the following with reference to the drawings and specific embodiments, present invention is further described in detail:
Referring to Fig.1, this example include parasitic patch 1, first medium substrate 2, primary radiation patch 3, second medium substrate 4,
Upper floor 5, feed structure 6 and lower floor 7.Parasitic patch 1 is located at the lower surface of first medium substrate 2, primary radiation patch 3
Positioned at the upper surface of second medium substrate 4, upper floor 5 is located at the upper surface of feed structure 6, and lower floor 7 is located at feed knot
The lower surface of structure 5 is etched with longitudinal slot 51 in the upper floor 5, for coupling energy from feed structure 6；Parasitic patch 1
It is provided with air layer between primary radiation patch 3, for broadening the beamwidth of antenna.
Referring to Fig. 2, the length L of the first medium substrate 2 are as follows: 0.3 × λ1≤L≤0.5×λ2, width W are as follows: 0.2 × λ1
≤W≤0.4×λ2, thickness H1 are as follows: 0.02 × λ1≤H1≤0.2×λ2；The length L of parasitic patch 1pAre as follows: 0.15 × λ0< Lp≤
0.6×λ0, width WpAre as follows: 0.1 × λ0< Wp≤0.5×λ0；The length L of primary radiation patch 3mAre as follows: 0.15 × λ0< Lm≤0.6×
λ0, width WmAre as follows: 0.1 × λ0< Wm≤0.5×λ0；The cross sectional dimensions of second medium substrate 4 and 2 cross section of first medium substrate
Size is identical, thickness H2 are as follows: 0.02 × λ1≤H2≤0.2×λ2；The air being arranged between parasitic patch 1 and primary radiation patch 3
The thickness H of layeraAre as follows: 0 < Ha0.25 × λ of <0；Wherein λ1For the corresponding wavelength of highest frequency in antenna operating band, λ2For antenna
The corresponding wavelength of low-limit frequency, λ in working band0For the wavelength of the corresponding free space of center frequency.
This example takes but is not limited to the permittivity ε of first medium substrate 2r1=2.2, length L=9.2mm, width W=
7.2mm, thickness H1=1.016mm；The length L of parasitic patch 1p=3mm, width Wp=2.3mm；The length L of primary radiation patch 3m
=2.4mm, width Wm=1.8mm；The permittivity ε of second medium substrate 4r2=2.2, thickness H2=0.762mm；Parasitic patch
The thickness H for the air layer being arranged between 1 and primary radiation patch 3a=1mm.
Referring to Fig. 3, the upper floor 5, length is identical as the cross-section lengths L of first medium substrate 2, width and the
The cross-sectional width W of one medium substrate 2 is identical；The size of the lower floor 7 is identical as the size of upper floor 5；
The feed structure 6.Including signal transmission passage 61, matching metal column 62 and third medium substrate 63, matching gold
Belong to the inside that third medium substrate 63 is arranged in column 62；Signal transmission passage 61 is made of four boundaries up and down, upper following
Boundary is made of metal throuth hole that is two rows of parallel and penetrating through third medium substrate 63, and left border is set as the input port of signal,
Right side boundary is made of vertical row's metal throuth hole, and is set as short-circuit port；The diameter of each metal throuth hole is D, phase
The spacing at adjacent two metal throuth hole centers is S, value range are as follows:
The up-and-down boundary size of the signal transmission passage 61 is identical, the length is: λg≤Lsiw≤ 0.9 × L included
Metal throuth hole quantityRight side boundary width WsiwAre as follows: 0.5 × λg< Wsiw< λg, the metal that is included is logical
The quantity in holeConstitute the centre distance third medium base of the metal throuth hole of the coboundary of signal transmission passage 61
The distance D1 of the cross section long side of plate 64 are as follows:Constitute the centre distance the of the metal throuth hole of short-circuit port
The distance D2 of the cross section broadside of three medium substrates 64 are as follows:Wherein λgFor the corresponding waveguide wave of Medium Wave Guide,
L is the length of first medium substrate 2, and W is the width of first medium substrate 2.
The cross sectional dimensions of third medium substrate 63 is identical as the cross sectional dimensions of first medium substrate 2, thickness H3Are as follows:
0.02×λ1≤H1≤0.2×λ2, wherein λ1For the corresponding wavelength of highest frequency in antenna operating band, λ2For Antenna Operation frequency
With the corresponding wavelength of interior low-limit frequency.
The shape of longitudinal slot 51 is butterfly or rectangle or H-shaped, and short circuit of the geometric center apart from signal transmission passage 61
The distance of port are as follows: dy=0.25 × λg, the offset or dish of 61 longitudinal centre line of distance signal transmission channel are as follows:
The metal material that matching metal column 63 uses is copper, the short circuit of the centre distance signal transmission passage 61 of metal column
The distance of short-circuit port of the distance of port with the geometric center of longitudinal slot 51 apart from signal transmission passage 61 is identical, and distance is vertical
To the distance W of the geometric center in gap 51SAre as follows:Diameter d are as follows: 0.2mm≤d≤1.2mm, wherein
WS1For the length of the first broadside of longitudinal slot 51.
The length that this example took but be not limited to signal transmission passage 61 is Lsiw=8mm, width Wsiw=5.6mm；Third
The permittivity ε of medium substrate 64r3=2.2, with a thickness of H3=0.762mm；The diameter D=0.56mm of metal throuth hole, adjacent two
Interval S=the 0.8mm at a metal throuth hole center, the quantity n1=11 for the metal throuth hole that two long sides include, short-circuit port includes
Metal throuth hole quantity n2=8；The distance of short-circuit port of the geometric center of longitudinal slot 51 apart from signal transmission passage 61
dy=2.5mm, the offset or dish offset=0.7mm of the longitudinal centre line in distance signal transmission channel 61；Constitute signal transmission
The distance D1=of the cross section long side of the centre distance third medium substrate 64 of the metal throuth hole on one of boundary in channel 61
0.8mm constitutes the distance D2=of the cross section broadside of the centre distance third medium substrate 64 of the metal throuth hole of short-circuit port
0.8mm；Longitudinal slot 51 uses butterfly gap, long side LS=3mm, the first broadside WS2=1.2mm, the second broadside WS1=
0.25mm；Match metal column 63, the distance W of the geometric center of the centre distance longitudinal slot 51 of metal columnS=0.8mm, directly
Diameter d=0.3mm.
Effect of the invention can be illustrated by following emulation:
1, simulation software: business simulation software HFSS_15.0.
2, emulation content:
Emulation 1 carries out simulation calculation using return wave loss parameter of the above-mentioned software to above-described embodiment, as a result such as Fig. 4 institute
Show.
By figure 4 above as it can be seen that using return loss≤- 10dB as standard, the bandwidth of operation of antenna is 22.6GHz~36.7GHz,
Using 28GHz as center frequency, antenna relative bandwidth is greater than 49%, and the beamwidth of antenna is significantly improved.
Emulation 2 carries out simulation calculation using gain parameter of the above-mentioned software to above-described embodiment, as a result as shown in Figure 5.
By figure 5 above as it can be seen that antenna is in bandwidth of operation 22.6GHz~36.7GHz, gain are as follows: 6.4 ± 1.2dB.
The above simulation result explanation, inventive antenna is in the case where guaranteeing the good situation of bandwidth of operation, gain stabilization.
Claims (10)
1. the broad-band slot coupling multilayer microstrip antenna based on feeding substrate integrated waveguide, including parasitic patch (1), first medium
Substrate (2), primary radiation patch (3), second medium substrate (4), upper floor (5), feed structure (6) and lower floor (7)；It posts
Raw patch (1) is located at the lower surface of first medium substrate (2), and primary radiation patch (3) is located at the upper table of second medium substrate (4)
Face, upper floor (5) are located at the upper surface of feed structure (6), and lower floor (7) is located at the lower surface of feed structure (5), special
Sign is:
Longitudinal slot (51) are etched on the upper floor (5), for coupling energy from feed structure (6)；
It is provided with air layer between the parasitic patch (1) and primary radiation patch (3), for broadening the beamwidth of antenna.
2. antenna according to claim 1, which is characterized in that the feed structure (6) include signal transmission passage (61),
Match metal column (62) and third medium substrate (63), inside of matching metal column (62) setting in third medium substrate (63)；
Signal transmission passage (61) is made of four boundaries up and down, and up-and-down boundary is by two rows of parallel and perforation third medium substrate
(63) metal throuth hole is constituted, and left border is set as the input port of signal, and right side boundary is by vertical row's metal throuth hole
Composition, and it is set as short-circuit port.
3. antenna according to claim 1, which is characterized in that the shape of the longitudinal slot (51) be butterfly or rectangle or
H-shaped, and the distance of short-circuit port of the geometric center apart from signal transmission passage (61) are as follows: dy=0.25 × λg, distance signal transmission
The offset or dish of the longitudinal centre line in channel (61) are as follows:Wherein λgFor the corresponding waveguide of Medium Wave Guide
Wavelength, WsiwFor the width of signal transmission passage (61).
4. antenna according to claim 1, which is characterized in that the length L of the first medium substrate (2) are as follows: 0.3 × λ1
≤L≤0.5×λ2, width W are as follows: 0.2 × λ1≤W≤0.4×λ2, thickness H1 are as follows: 0.02 × λ1≤H1≤0.2×λ2, λ1For day
The corresponding wavelength of highest frequency, λ in line working band2For the corresponding wavelength of low-limit frequency in antenna operating band.
5. antenna according to claim 2, which is characterized in that the cross sectional dimensions of third medium substrate (63) and first is situated between
The cross sectional dimensions of matter substrate (2) is identical, thickness H3Are as follows: 0 < H30.25 × λ of <0。
6. antenna according to claim 1, which is characterized in that set between the parasitic patch (1) and primary radiation patch (3)
The air layer thickness H setaAre as follows: 0 < Ha0.25 × λ of <0, wherein λ0For the wavelength of the corresponding free space of center frequency.
7. antenna according to claim 1, which is characterized in that the length L of the parasitic patch (1)pAre as follows: 0.15 × λ0<
Lp≤0.6×λ0, width WpAre as follows: 0.1 × λ0< Wp≤0.5×λ0, wherein λ0For the wavelength of the corresponding free space of center frequency.
8. antenna according to claim 1, which is characterized in that primary radiation patch (3) the length LmAre as follows: 0.15 × λ0<
Lm≤0.6×λ0, width WmAre as follows: 0.1 × λ0< Wm≤0.5×λ0, wherein λ0For the wavelength of the corresponding free space of center frequency.
9. antenna according to claim 1, which is characterized in that the cross sectional dimensions of the second medium substrate (4) and
One medium substrate (2) cross sectional dimensions is identical, thickness H2 are as follows: 0.02 × λ1≤H2≤0.2×λ2, wherein λ1For Antenna Operation
The corresponding wavelength of highest frequency, λ in frequency band2For the corresponding wavelength of low-limit frequency in antenna operating band.
10. antenna according to claim 1, which is characterized in that the upper floor (5), length and first medium base
The cross-section lengths L of plate (2) is identical, and width is identical as the cross-sectional width W of first medium substrate (2)；The lower floor (7)
Size it is identical as the size of upper floor (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810874543.4A CN109216929A (en) | 2018-08-03 | 2018-08-03 | Broad-band slot coupling multilayer microstrip antenna based on feeding substrate integrated waveguide |
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| CN201810874543.4A CN109216929A (en) | 2018-08-03 | 2018-08-03 | Broad-band slot coupling multilayer microstrip antenna based on feeding substrate integrated waveguide |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797640A (en) * | 2019-11-07 | 2020-02-14 | 西安电子工程研究所 | Ka frequency band broadband low-profile dual-linear polarization microstrip antenna based on high-frequency lamination technology |
| CN111179450A (en) * | 2019-12-25 | 2020-05-19 | 北京万集科技股份有限公司 | Antenna, road side unit RSU |
| CN111740225A (en) * | 2020-07-30 | 2020-10-02 | 成都天锐星通科技有限公司 | Microstrip antenna and microstrip antenna array |
| WO2021208901A1 (en) * | 2020-04-14 | 2021-10-21 | 华为技术有限公司 | Series-fed antenna, communication device, and method for manufacturing series-fed antenna |
| CN114883793A (en) * | 2022-04-24 | 2022-08-09 | 西安交通大学 | Broadband and high-power-capacity patch antenna based on capacitive coupling feed |
| CN114899610A (en) * | 2022-04-21 | 2022-08-12 | 中国人民解放军63660部队 | Broadband microstrip patch antenna working in X wave band |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797640A (en) * | 2019-11-07 | 2020-02-14 | 西安电子工程研究所 | Ka frequency band broadband low-profile dual-linear polarization microstrip antenna based on high-frequency lamination technology |
| CN110797640B (en) * | 2019-11-07 | 2021-09-07 | 西安电子工程研究所 | Ka frequency band broadband low-profile dual-linear polarization microstrip antenna based on high-frequency lamination technology |
| CN111179450A (en) * | 2019-12-25 | 2020-05-19 | 北京万集科技股份有限公司 | Antenna, road side unit RSU |
| CN111179450B (en) * | 2019-12-25 | 2023-08-04 | 北京万集科技股份有限公司 | Antenna, road side unit RSU |
| WO2021208901A1 (en) * | 2020-04-14 | 2021-10-21 | 华为技术有限公司 | Series-fed antenna, communication device, and method for manufacturing series-fed antenna |
| CN113540803A (en) * | 2020-04-14 | 2021-10-22 | 华为技术有限公司 | Series feed antenna, communication equipment and method for manufacturing series feed antenna |
| EP4135128A4 (en) * | 2020-04-14 | 2023-09-27 | Huawei Technologies Co., Ltd. | Series-fed antenna, communication device, and method for manufacturing series-fed antenna |
| CN111740225A (en) * | 2020-07-30 | 2020-10-02 | 成都天锐星通科技有限公司 | Microstrip antenna and microstrip antenna array |
| CN114899610A (en) * | 2022-04-21 | 2022-08-12 | 中国人民解放军63660部队 | Broadband microstrip patch antenna working in X wave band |
| CN114883793A (en) * | 2022-04-24 | 2022-08-09 | 西安交通大学 | Broadband and high-power-capacity patch antenna based on capacitive coupling feed |
| CN114883793B (en) * | 2022-04-24 | 2023-03-28 | 西安交通大学 | Broadband and high-power-capacity patch antenna based on capacitive coupling feed |
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