CN107634335A - Millimeter wave array antenna based on sandwich construction - Google Patents
Millimeter wave array antenna based on sandwich construction Download PDFInfo
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- CN107634335A CN107634335A CN201710667821.4A CN201710667821A CN107634335A CN 107634335 A CN107634335 A CN 107634335A CN 201710667821 A CN201710667821 A CN 201710667821A CN 107634335 A CN107634335 A CN 107634335A
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Abstract
The present invention proposes a kind of millimeter wave array antenna based on sandwich construction, while gain is improved, realizes the miniaturization of millimeter wave array antenna；Including m × n antenna element, first medium plate and second medium plate stacked on top of one another, inner ground plate is printed with first medium plate upper surface, external ground plate is printed with second medium plate lower surface, m × n radiating slot is internally etched with earth plate, antenna element is fixed on inner ground plate, and positioned at the surface of radiating slot, feeding network is provided between first medium plate and second medium plate, for carrying out couple feed to antenna element；Antenna element includes multilayer acoustical panel, every layer of dielectric-slab upper surface is printed with metallic plate, circular open is provided with the planar central of every layer of metallic plate, connected between adjacent metal sheets by the plated-through hole on the outside of circular open, form the round speaker structure that bore face becomes larger from bottom to top.
Description
Technical field
The invention belongs to antenna technical field, is related to a kind of millimeter wave array antenna, and in particular to one kind is based on multilayer knot
The millimeter wave array antenna of structure, available for wireless communication fields such as car-mounted devices.
Background technology
With the fast development of modern wireless communication systems worldwide, the requirement more and more higher to antenna.It is thunderous
Up to antenna, general requesting party tropism is strong, high gain, small volume etc., and individual antenna is unable to reach requirement, it is necessary to sets up array day
Line.Array antenna is a kind of antenna form common in modern radar and communication system.In array antenna design, gain, chi
Very little is important performance indications.High gain then direct increasing action distance；Caliber size is bigger, then antenna gain is higher, but institute
The space that antenna need to be installed is bigger.Therefore array antenna size how is reduced, the high-gain for keeping array antenna again is battle array
The difficult point of array antenna design.
Electromagnetic horn obtains non-as outstanding millimeter wave array antenna radiating element in satellite, phased array etc.
Often it is widely applied.Generally for the miniaturization for realizing electromagnetic horn, it is necessary to reduce the area and loudspeaker length of trumpet terminal end bore
Degree, but the gain of electromagnetic horn is so reduced simultaneously.These limit the Miniaturization Design for causing electromagnetic horn and performance boost
It can not take into account.Prior art is more by setting air cavity inside dielectric layer, for reduce millimeter wave frequency band by surface wave and
Loss improves the gain of antenna with this caused by medium substrate, vertical horn structure and rectangular waveguide is formed, to realize loudspeaker day
The miniaturization of line and high-gain design.
Such as：2014, IEEE Transactions on Antenna and Propagation published Takuro
Entitled " the 300-GHz Step-Profiled Corrugated Horn Antennas Integrated in of Tajima et al.
In LTCC " article, a kind of Millimeter Wave Rectangular Wave electromagnetic horn is disclosed, by substrate integrated waveguide technology, uses air cavity
Hollow feed waveguide and rectangular horn structure is formed in the dielectric layer with plated-through hole array, reduces Jie of millimeter wave frequency band
Matter is lost and improves the radiation efficiency of antenna, the gain of electromagnetic horn is reached 18dBi, while shorten loudspeaker opening
Length, antenna overall dimensions are the λ of the λ of 5 λ × 5 × 2.8, but the size of antenna is still larger and gain is relatively low, is unfavorable for array day
The miniaturization of line and high-gain design, wherein λ is air medium wavelength.
The content of the invention
A kind of the defects of it is an object of the invention to overcome above-mentioned prior art to exist, it is proposed that milli based on sandwich construction
Metric wave array antenna, couple feed is carried out to the antenna element of circular radiation bore by radiating slot, is effectively improving antenna
While gain, the miniaturization of millimeter wave array antenna is realized.
To achieve the above object, the technical scheme taken of the present invention is：
A kind of millimeter wave array antenna based on sandwich construction, including m × n antenna element 1, stacked on top of one another first Jie
Scutum 3 and second medium plate 4, the upper surface of the first medium plate 3 are printed with inner ground plate 2, the second medium plate 4
Lower surface is printed with external ground plate 5, and m × n radiating slot 21, the antenna element 1 are etched with the inner ground plate 2
It is fixed on inner ground plate 2, and is located at the surface of radiating slot 21, between the first medium plate 3 and second medium plate 4
Feeding network 6 is provided with, for carrying out aperture-coupled to antenna element 1 by radiating slot 21, wherein, m >=2, n >=2,
The antenna element 1 includes multilayer acoustical panel 11, and the upper surface of every layer of dielectric-slab 11 is printed with metallic plate 12, every layer of metallic plate 12
Planar central at be provided with circular open, led between adjacent metal sheets 12 by multiple metallization on the outside of circular open
Hole 13 connects, and forms the round speaker structure that bore face becomes larger from bottom to top.
The above-mentioned millimeter wave array antenna based on sandwich construction, the radiating slot 21, using H type structures；Described first
Dielectric-slab 3 and second medium plate 4, the plated-through hole 7 of m × n rectangular arranged are respectively arranged with thereon, for reducing transmission network
The insertion loss of network 6；The plated-through hole 7 of the rectangular arranged, its geometric center are located on the central axis of antenna element 1；
The radiating slot 21, its geometric center are located on the central axis of antenna element 1.
The present invention compared with prior art, has advantages below：
(1) antenna element of the invention includes multilayer acoustical panel, and circular open is printed with the upper surface of every layer of dielectric-slab
Metallic plate, the round speaker structure that becomes larger from bottom to top of these circular opens composition, its phase center to circular bore
The difference penetrated footpath along side and footpath is penetrated along axle in face is equal, reduces the probability of secondary lobe appearance, while expands horn mouth diametric plane, raising side
Tropism, compared with the rectangular opening diametric plane used in the prior art, effectively raise antenna gain.
(2) feed of inventive antenna unit is that H types radiating slot is coupled by feeding network to realize, reduces feedback
Interference of the electric structure to array pattern, the parasitic radiation for avoiding feed strip from, while in first medium plate and second medium plate
On be provided with the plated-through hole of rectangular arranged, the insertion loss of feeding network is reduced, with using waveguide to present in the prior art
Electricity is compared, and shortens electromagnetic horn length, effectively realizes array antenna miniaturization.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the side view of antenna element of the embodiment of the present invention；
Fig. 3 is the top view of the radiating slot of the present invention；
Fig. 4 is the top view of first medium of embodiment of the present invention plate and second medium plate；
Fig. 5 is the location diagram of the plated-through hole of antenna element of the embodiment of the present invention, radiating slot and rectangular arranged；
Fig. 6 is the top view of feeding network of the embodiment of the present invention；
Fig. 7 is the partial enlarged drawing of feeding network of the embodiment of the present invention；
Fig. 8 is analogous diagram of the working frequency with reflectance factor S11 of the embodiment of the present invention；
Fig. 9 is E face directional diagram of the embodiment of the present invention in 31GHz；
Figure 10 is H face directional diagram of the embodiment of the present invention in 31GHz.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Reference picture 1, a kind of millimeter wave array antenna based on sandwich construction, including it is 4 × 8 antenna elements 1, stacked on top of one another
First medium plate 3 and second medium plate 4, the thickness of the antenna element 1 is H1=1.248mm, the first medium plate
Thickness is H2=0.096mm, and the thickness of the second medium plate is H3=0.48mm, and the upper surface of the first medium plate 3 prints
Inner ground plate 2 is formed with, the lower surface of the second medium plate 4 is printed with external ground plate 5, lost on the inner ground plate 2
4 × 8 radiating slots 21 are carved with, as shown in figure 3, the antenna element 1 is fixed on inner ground plate 2, and are located at radiating slot
The surface of gap 21, as shown in figure 5, feeding network 6 is provided between the first medium plate 3 and second medium plate 4, such as Fig. 6
It is shown, for carrying out aperture-coupled, the first medium plate 3 and second medium to antenna element 1 by radiating slot 21
Plate 4, the plated-through hole 7 of 4 × 8 rectangular arrangeds is respectively arranged with thereon, as shown in figure 4, wherein array element horizontal spacing dx=
8mm, longitudinal pitch dy=6mm.The antenna element 1, as shown in Fig. 2 including 13 layers of dielectric-slab 11, every layer of dielectric-slab 11 it is upper
Surface is printed with metallic plate 12, and circular open is provided with the planar central of every layer of metallic plate 12, is led between adjacent metal sheets 12
The multiple plated-through holes 13 crossed on the outside of circular open connect, and for suppressing the generation and propagation of surface wave, reduce millimeter
The dielectric loss and conductor losses of wave frequency section simultaneously reduce the coupling between antenna, form the circle that bore face becomes larger from bottom to top
Horn structure, the difference penetrated footpath along side and footpath is penetrated along axle of its phase center to circular port diametric plane is equal, reduces secondary lobe appearance
Probability.
Reference picture 2, the thickness of dielectric-slab 11 of the antenna element 1 is 0.096mm, circular open corresponding to metallic plate 12 half
Footpath R1 is 2.62mm, and R2 2.48mm, R3 2.34mm, R4 2.20mm, R5 2.06mm, R6 1.92mm, R7 are
1.78mm, R8 1.64mm, R9 1.50mm, R10 1.36mm, R11 1.22mm, R12 1.08mm, R13 1.06mm.
Multiple plated-through holes 13 on the outside of the circular open include V1~V5, and wherein V1 and V5 thickness is two layer medium plate 11, V2,
V3 and V4 thickness is three layers of dielectric-slab 11.
Reference picture 3, the radiating slot 21, using H type symmetrical structures, its size L1 is 1.59mm, L2 0.28mm, W1
For 0.13mm, for improving the impedance matching property of antenna, extended antenna bandwidth of operation, and by antenna element 1 and transmission network
Network 6 is isolated, the parasitic radiation for avoiding feed strip from.
Reference picture 4, the first medium plate 3 and second medium plate 4, the gold of 4 × 8 rectangular arrangeds is respectively arranged with thereon
Categoryization through hole 7, its size is L3=3.2mm, a width of W2=2.7mm, for reducing the insertion loss of feeding network 6.
Reference picture 5, the plated-through hole array 7 of the rectangular arranged, its geometric center are located at the central shaft of antenna element 1
On line, the radiating slot 21, its geometric center is located on the central axis of antenna element 1.
Reference picture 6, the feeding network 6 are symmetrical structure, are made up of strip line and 31 T-shaped power splitters.Dotted line in figure
Place carries out partial enlargement, as shown in Figure 7.
Reference picture 7, the size W3 of feeding network 6 of partial enlargement is 0.07mm, and L4 3.17mm, L5 2mm, L6 are
2.96mm, L7 1.03mm, L8 0.97mm, L9 4.92mm, L10 0.83mm, L11 1mm, L12 6.09mm, L13
For 10.6mm, L14 16mm, L15 0.53mm.The a length of L8=of quarter wavelength impedance transducer of wherein power splitter
0.97mm, a width of W4=0.15mm.
Metallic plate 12, inner ground plate 2, external ground plate 5 and the feeding network 6 of antenna element 1 use silver metal
Film is printed；Dielectric-slab 11, first medium plate 3 and the second medium plate 4 of antenna element 1 use dielectric constant as 7.8, loss
The DuPont951 low-temperature co-burning ceramic materials that angle is just being cut to 0.0015 are made；Multiple metallization on the outside of circular open are led to
The through hole radius of the plated-through hole 7 of hole 13 and rectangular arranged is 0.05mm, and through hole spacing is 0.2mm, by being filled in hole
Silver metal material is filled to be formed.
Below in conjunction with emulation experiment, the technique effect of the present invention is described further：
1st, simulated conditions and content
The reflectance factor S11 and radiation direction of the present invention are entered using three-dimensional full-wave electromagnetic field simulation software HFSS_17.1
Row emulation, its result is as shown in Fig. 8, Fig. 9 and Figure 10.
2nd, analysis of simulation result
Reference picture 8, the resonance point of the embodiment of the present invention is about 31.5GHz, and reflectance factor S11 is about -22dB,
Reflectance factor in 29.4GHz~32.8GHz frequency ranges is less than -10dB, and bandwidth is about 11%.Simulation result explanation, this hair
It is bright to be operated in millimeter wave frequency band and there is larger bandwidth.
In 31GHz E-plane and H-plane pattern, its maximum gain is by reference picture 9 and Figure 10, the respectively embodiment of the present invention
21.9dBi.Compared with prior art, the present invention effectively raises antenna gain.
As can be seen here, the present invention proposes a kind of millimeter wave array antenna based on sandwich construction, and antenna overall size is 6.4
The λ of the λ of λ × 2.4 × 0.1824, wherein λ is air medium wavelength, compared with prior art, real while antenna gain is effectively improved
The miniaturization of existing millimeter wave array antenna.
Above description is only the specific embodiment of the present invention, does not form any limitation of the invention.It should be understood that
, for professional and technical personnel in the field, understand the present invention principle after, according to the above description to form, details and
Parameter etc. is improved or converted, and all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (5)
1. a kind of millimeter wave array antenna based on sandwich construction, including m × n antenna element (1), stacked on top of one another first Jie
Scutum (3) and second medium plate (4), the upper surface of the first medium plate (3) are printed with inner ground plate (2), and described second
The lower surface of dielectric-slab (4) is printed with external ground plate (5), and m × n radiating slot is etched with the inner ground plate (2)
(21), the antenna element (1) is fixed on inner ground plate (2), and is located at the surface of radiating slot (21), and described first
Feeding network (6) is provided between dielectric-slab (3) and second medium plate (4), for by radiating slot (21) to antenna element
(1) aperture-coupled is carried out, wherein, m >=2, n >=2, it is characterised in that the antenna element (1) includes multilayer acoustical panel
(11), the upper surface of every layer of dielectric-slab (11) is printed with metallic plate (12), is provided with the planar central of every layer of metallic plate (12)
Circular open, pass through multiple plated-through holes (13) on the outside of circular open between adjacent metal sheets (12) and connect, formed
The round speaker structure that bore face becomes larger from bottom to top.
2. the millimeter wave array antenna according to claim 1 based on sandwich construction, it is characterised in that the radiating slot
(21), using H type structures.
3. the millimeter wave array antenna according to claim 1 based on sandwich construction, it is characterised in that the first medium
Plate (3) and second medium plate (4), the plated-through hole (7) of m × n rectangular arranged is respectively arranged with thereon, fed for reducing
The insertion loss of network (6).
4. the millimeter wave array antenna according to claim 3 based on sandwich construction, it is characterised in that the rectangular arranged
Plated-through hole (7), its geometric center is located on the central axis of antenna element (1).
5. the millimeter wave array antenna according to claim 1 based on sandwich construction, it is characterised in that the radiating slot
(21), its geometric center is located on the central axis of antenna element (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710667821.4A CN107634335A (en) | 2017-08-07 | 2017-08-07 | Millimeter wave array antenna based on sandwich construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710667821.4A CN107634335A (en) | 2017-08-07 | 2017-08-07 | Millimeter wave array antenna based on sandwich construction |
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| CN201710667821.4A Pending CN107634335A (en) | 2017-08-07 | 2017-08-07 | Millimeter wave array antenna based on sandwich construction |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108649325A (en) * | 2018-03-20 | 2018-10-12 | 北京邮电大学 | A kind of wide band high-gain millimeter wave dielectric resonant antenna array |
| CN108808220A (en) * | 2018-06-07 | 2018-11-13 | 南京理工大学 | A kind of wideband microstrip array antenna using waveguide feed |
| CN109103605A (en) * | 2018-08-07 | 2018-12-28 | 北京凌波微步信息技术有限公司 | A kind of array antenna using inversion microstrip gap waveguide feed |
| CN109888509A (en) * | 2019-01-22 | 2019-06-14 | 武汉虹信通信技术有限责任公司 | Large scale array antenna |
| CN112164878A (en) * | 2018-03-02 | 2021-01-01 | 三星电机株式会社 | Antenna device and antenna module |
| CN112236903A (en) * | 2018-06-01 | 2021-01-15 | 瑞士十二公司 | Radio frequency module |
| CN112448157A (en) * | 2020-11-10 | 2021-03-05 | 安徽大学 | Millimeter wave integrated log-periodic antenna based on multilayer PCB |
| CN112467360A (en) * | 2020-11-10 | 2021-03-09 | 安徽大学 | Millimeter wave integrated Vivaldi antenna based on multilayer PCB |
| CN113169448A (en) * | 2020-06-30 | 2021-07-23 | 深圳市大疆创新科技有限公司 | Antenna array, radar and movable platform |
| CN113506984A (en) * | 2021-05-24 | 2021-10-15 | 中国电子科技集团公司第二十九研究所 | Metamaterial decoupling structure applied to improving far-field isolation between horn antenna arrays |
| CN113964495A (en) * | 2021-10-22 | 2022-01-21 | 云南大学 | Integrated substrate gap waveguide filter antenna |
| CN114267951A (en) * | 2021-12-24 | 2022-04-01 | 中国航天科工集团八五一一研究所 | Broadband open waveguide radiation antenna and design method thereof |
| KR102384943B1 (en) * | 2021-12-14 | 2022-04-12 | 한국해양과학기술원 | Surface wave generator for communication that using ship metal as medium |
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Cited By (20)
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|---|---|---|---|---|
| CN112164878A (en) * | 2018-03-02 | 2021-01-01 | 三星电机株式会社 | Antenna device and antenna module |
| CN108649325A (en) * | 2018-03-20 | 2018-10-12 | 北京邮电大学 | A kind of wide band high-gain millimeter wave dielectric resonant antenna array |
| CN112236903A (en) * | 2018-06-01 | 2021-01-15 | 瑞士十二公司 | Radio frequency module |
| CN112236903B (en) * | 2018-06-01 | 2024-05-10 | 瑞士十二公司 | Radio frequency module |
| CN108808220A (en) * | 2018-06-07 | 2018-11-13 | 南京理工大学 | A kind of wideband microstrip array antenna using waveguide feed |
| CN108808220B (en) * | 2018-06-07 | 2020-06-05 | 南京理工大学 | Broadband microstrip array antenna adopting waveguide feed |
| CN109103605A (en) * | 2018-08-07 | 2018-12-28 | 北京凌波微步信息技术有限公司 | A kind of array antenna using inversion microstrip gap waveguide feed |
| CN109888509A (en) * | 2019-01-22 | 2019-06-14 | 武汉虹信通信技术有限责任公司 | Large scale array antenna |
| CN109888509B (en) * | 2019-01-22 | 2020-09-04 | 武汉虹信通信技术有限责任公司 | Large-scale array antenna |
| CN113169448A (en) * | 2020-06-30 | 2021-07-23 | 深圳市大疆创新科技有限公司 | Antenna array, radar and movable platform |
| WO2022000351A1 (en) * | 2020-06-30 | 2022-01-06 | 深圳市大疆创新科技有限公司 | Antenna array, radar, and movable platform |
| CN112467360A (en) * | 2020-11-10 | 2021-03-09 | 安徽大学 | Millimeter wave integrated Vivaldi antenna based on multilayer PCB |
| CN112448157B (en) * | 2020-11-10 | 2022-04-22 | 安徽大学 | Millimeter wave integrated log-periodic antenna based on multilayer PCB |
| CN112448157A (en) * | 2020-11-10 | 2021-03-05 | 安徽大学 | Millimeter wave integrated log-periodic antenna based on multilayer PCB |
| CN113506984A (en) * | 2021-05-24 | 2021-10-15 | 中国电子科技集团公司第二十九研究所 | Metamaterial decoupling structure applied to improving far-field isolation between horn antenna arrays |
| CN113506984B (en) * | 2021-05-24 | 2023-05-02 | 中国电子科技集团公司第二十九研究所 | Metamaterial decoupling structure applied to far field isolation between horn antenna arrays |
| CN113964495A (en) * | 2021-10-22 | 2022-01-21 | 云南大学 | Integrated substrate gap waveguide filter antenna |
| CN113964495B (en) * | 2021-10-22 | 2023-12-05 | 云南大学 | Integrated substrate gap waveguide filter antenna |
| KR102384943B1 (en) * | 2021-12-14 | 2022-04-12 | 한국해양과학기술원 | Surface wave generator for communication that using ship metal as medium |
| CN114267951A (en) * | 2021-12-24 | 2022-04-01 | 中国航天科工集团八五一一研究所 | Broadband open waveguide radiation antenna and design method thereof |
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Application publication date: 20180126 |