CN109411885B - Caliber-controllable ultra-surface filtering antenna - Google Patents
Caliber-controllable ultra-surface filtering antenna Download PDFInfo
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- CN109411885B CN109411885B CN201811438509.9A CN201811438509A CN109411885B CN 109411885 B CN109411885 B CN 109411885B CN 201811438509 A CN201811438509 A CN 201811438509A CN 109411885 B CN109411885 B CN 109411885B
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Abstract
The invention discloses a caliber-controllable ultra-surface filter antenna, which comprises: the structure comprises a bottom layer structure provided with microstrip lines, a middle layer structure provided with a metalized ground and a top layer structure provided with a plurality of metal patches, wherein the bottom layer structure is sequentially laminated, the metalized ground is provided with strip grooves perpendicular to the microstrip lines, the plurality of metal patches are symmetrically arranged along the strip grooves, and a plurality of metalized grounding holes are symmetrically distributed on each metal patch along the center of a diagonal line of each metal patch. The aperture-controllable super-surface filter antenna provided by the invention can control the aperture of the super-surface antenna under the condition of keeping the working frequency band unchanged, improves the freedom degree of beam width design selection, forms a radiation zero point on the upper side and the lower side of the working frequency band, improves the frequency selectivity, realizes the filter effect and is beneficial to improving the anti-interference capability of the system.
Description
Technical Field
The invention relates to the technical field of microwave communication, in particular to a caliber-controllable ultra-surface filter antenna.
Background
Microstrip patch antennas are widely used in wireless communication, sensing and radar systems due to their low profile characteristics, however patch antennas have significant limitations in bandwidth and gain, so ultra-surface antenna technology is used to ameliorate these drawbacks. The technology of the ultra-surface antenna generally comprises a radiation surface formed by mutually coupled multi-patches, and has the good characteristics of low profile, high gain, broadband and the like.
The existing super-surface antenna generally adopts a plurality of densely arranged rectangular 'H' -shaped, round or other-shaped patches as radiating units and is excited by a coupling feed mode to form a high-gain or broadband antenna, however, the aperture regulation and control degree of freedom of the antennas is low, and most of the antennas do not have filtering characteristics. The partial super-surface antenna is provided with branches and short-circuit holes on the feed structure so that the antenna has filtering characteristics, but a control mode of the antenna caliber is not proposed so as to adjust the beam width. Therefore, the super-surface antenna with the antenna aperture control characteristic and the filtering characteristic is beneficial to improving the design freedom of the antenna and the out-of-band suppression of the antenna, reducing the complexity of the system and having important value.
Disclosure of Invention
In order to solve the problems in the prior art, the embodiment of the invention provides a caliber-controllable ultra-surface filter antenna. The technical scheme is as follows:
in one aspect, an embodiment of the present invention provides a controllable caliber subsurface filter antenna, including: a bottom layer structure provided with microstrip lines, a middle layer structure provided with metallized earth and a top layer structure provided with a plurality of metal patches which are sequentially stacked,
The metallized land is provided with a strip-shaped groove which is perpendicular to the microstrip line, a plurality of metal patches are symmetrically arranged along the strip-shaped groove,
And a plurality of metallized grounding holes are symmetrically distributed on each metal patch along the center of the diagonal line of the metal patch, and the metallized ground is also provided with metallized grounding holes at the positions corresponding to the metallized grounding holes of the metal patches, and each metal patch is connected with the metallized ground through the metallized grounding holes.
In the above-mentioned controllable caliber ultra-surface filter antenna of the embodiment of the invention, the top layer structure is provided with two metal patches symmetrically arranged along the strip-shaped groove.
In the controllable caliber ultra-surface filter antenna provided by the embodiment of the invention, the top layer structure is provided with four metal patches which are symmetrically arranged along the strip-shaped groove and are symmetrically arranged along the microstrip line.
In the controllable caliber ultra-surface filter antenna provided by the embodiment of the invention, sixteen metal patches which are symmetrically arranged along the strip-shaped grooves and are symmetrically arranged along the microstrip lines are arranged on the top layer structure.
In the above-mentioned controllable caliber ultra-surface filter antenna of the embodiment of the invention, the metal patch is a square metal patch.
In the above-mentioned controllable caliber ultra-surface filter antenna of the embodiment of the invention, four metallized grounding holes are symmetrically distributed on each metal patch along the diagonal center of the metal patch, and each metallized grounding hole is arranged on the diagonal of the metal patch.
The technical scheme provided by the embodiment of the invention has the beneficial effects that:
The aperture spacing between the metallized grounding holes and the size of the metal patches are synchronously changed while the metallized grounding holes are symmetrically distributed along the center of the diagonal line of each metal patch, so that the antenna aperture can be changed under the condition of keeping the working frequency of the antenna unchanged; meanwhile, the metallized grounding hole on the metal patch can enable an electric field at the center of the metal patch and electric fields at two sides of the metal patch to cancel each other at a certain frequency lower than the working frequency of the antenna, so that a radiation zero point is generated; the length of the microstrip line at the other side of the strip-shaped groove ensures that the antenna generates another radiation zero point at a certain frequency higher than the working frequency, thereby realizing the filtering effect. The aperture-controllable super-surface filter antenna can control the aperture of the super-surface antenna under the condition of keeping the working frequency band unchanged, improves the design and selection freedom degree of the wave beam width, forms a radiation zero point on the upper side and the lower side of the working frequency band, improves the frequency selectivity, realizes the filter effect and is beneficial to improving the anti-interference capability of the system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic cross-sectional structure of a controllable caliber ultra-surface filter antenna according to a first embodiment of the present invention;
FIG. 2 is a top view of a subsurface filter antenna with controllable aperture according to an embodiment of the present invention;
FIG. 3 is a top view of a middle layer structure of a controllable caliber ultra-surface filter antenna according to an embodiment of the present invention;
FIG. 4 is a top view of a top layer structure of a controllable aperture ultra-surface filter antenna according to an embodiment of the present invention;
fig. 5 is a schematic diagram of metal patch arrangement in a top layer structure according to a first embodiment of the present invention;
Fig. 6 is a schematic diagram of an arrangement of metal patches in a top-layer structure according to a first embodiment of the present invention;
FIG. 7 is a diagram showing simulation results of a controllable caliber ultra-surface filter antenna according to an embodiment of the present invention;
FIG. 8 is a normalized pattern of a controllable caliber ultra-surface filter antenna simulated on a 10GHzxoz plane provided by an embodiment of the invention;
Fig. 9 is a normalized pattern of a controllable caliber ultra-surface filter antenna simulated on a 10GHzyoz plane according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Example 1
An embodiment of the present invention provides a controllable caliber super surface filter antenna, referring to fig. 1, the super surface filter antenna may include: the structure comprises a bottom layer structure 3 provided with microstrip lines 8, a middle layer structure 2 provided with a metalized ground 7 and a top layer structure 1 provided with a plurality of metal patches 4, which are sequentially stacked.
Referring to fig. 2-4, a strip-shaped groove 6 perpendicular to the microstrip line 8 is formed in the metalized ground 7, a plurality of metal patches 4 are symmetrically arranged along the strip-shaped groove 6, a plurality of metalized ground holes 5 are symmetrically distributed on each metal patch 4 along the center of the diagonal line of the metal patch, metalized ground holes 5 are also formed in positions, corresponding to the metalized ground holes 5 of the metal patches 4, of the metalized ground 7, and each metal patch 4 is connected with the metalized ground 7 through the metalized ground holes 5.
In this embodiment, antenna aperture control means that aperture control is achieved through the antenna itself, so that free selection of beam width is achieved. Specifically, the signals received by the antenna are fed through the microstrip line 8 and coupled to the metal patches 4 provided with the metallized grounding holes 5 via the strip-shaped grooves 6, so that radiation is generated, the hole spacing between the metallized grounding holes 5 and the size of the metal patches 4 are synchronously changed while the metallized grounding holes 5 are distributed symmetrically along the center of the diagonal line of each metal patch 4, and the antenna aperture, namely the beam width of the antenna, can be changed under the condition of keeping the working frequency of the antenna unchanged.
Filtering means that the antenna obtains higher frequency selectivity on the frequency domain through the antenna, and the anti-interference capability of the system is improved. Specifically, the metallized ground hole 5 on the metal patch 4 can make the electric field at the center of the metal patch 4 cancel the electric field at both sides of the metal patch 4 at a certain frequency lower than the antenna operating frequency, thereby generating a radiation zero point; the length of the microstrip line 8 at the other side of the strip-shaped groove 6 enables the antenna to generate another radiation zero point at a certain frequency higher than the working frequency, so that the whole frequency selectivity of the antenna is good, and the filtering effect is realized.
In this embodiment, the aperture-controllable super-surface filter antenna can control the aperture of the super-surface antenna under the condition of keeping the working frequency band unchanged, so that the degree of freedom of beam width design selection is improved, a radiation zero point is formed on the upper side and the lower side of the working frequency band, the frequency selectivity is improved, the filter effect is realized, and the anti-interference capability of the system is improved.
Optionally, referring to fig. 5, two metal patches 4 are arranged symmetrically along the strip-shaped groove 6 on the top layer structure 1.
Alternatively, referring to fig. 4, four metal patches 4 are arranged on the top layer structure 1 symmetrically along the strip-shaped grooves 6 and simultaneously symmetrically along the microstrip lines 8.
Alternatively, referring to fig. 6, sixteen metal patches 4 are arranged on the top layer structure 1 symmetrically along the strip-shaped grooves 6 and simultaneously symmetrically along the microstrip lines 8.
In the present embodiment, the metal patches 4 may be arranged in various ways, such as 2×2, 1×2, 4×4, etc., as shown in fig. 4-6, while maintaining the symmetrical distribution of the antenna overall structure with respect to the strip-shaped groove 6, without limitation.
Alternatively, referring to fig. 4, the metal patch 4 is a square metal patch.
Further, referring to fig. 4, four metallized ground holes 5 are symmetrically arranged on each metal patch 4 along the diagonal center thereof, and each metallized ground hole 5 is arranged on the diagonal of the metal patch 4.
In this embodiment, a plurality of metal patches 4 with metal grounding vias 5 distributed diagonally and centrally symmetrically form a super-surface radiator, and the antenna is formed by coupling feeding through microstrip lines 8, and the aperture of the antenna is controllable (by changing the size of the metal patches 4 and the hole spacing between the metallized grounding vias 5 in the metal patches 4 at the same time), so that different beam widths can be obtained and radiation zeros can be formed to form a filter characteristic.
In addition, fig. 7 shows the simulated matching and gain response of the ultra-surface filter antenna with controllable aperture, which is obtained in the 2×2 case shown in fig. 4. As can be seen from fig. 7, the operating bandwidth can cover 9.3-10.7 GHz, the gain range in the frequency band is 8.8-10.1-dBi, and a radiation zero point is respectively implemented at the low frequency and the high frequency of the frequency band, so that the antenna has the filtering characteristic. Fig. 8 and 9 are simulated normalized patterns at 10GHz obtained for the above-described steerable aperture subsurface filter antenna, with different parameters, and it can be seen that the beam widths of the E-plane and H-plane of the antenna can be changed by adjusting the aperture of the antenna. In the simulation experiment, the RO4003C substrate with a dielectric constant of 3.55 and a loss angle of 0.0027 was used, and the thickness of the antenna was 1.52mm, namely 0.05λ 0 at 10 GHz.
According to the embodiment of the invention, the aperture spacing between the metallized grounding holes and the size of the metal patches are synchronously changed while the metallized grounding holes are symmetrically distributed along the center of the diagonal line of each metal patch, so that the antenna aperture can be changed under the condition of keeping the working frequency of the antenna unchanged; meanwhile, the metallized grounding hole on the metal patch can enable an electric field at the center of the metal patch and electric fields at two sides of the metal patch to cancel each other at a certain frequency lower than the working frequency of the antenna, so that a radiation zero point is generated; the length of the microstrip line at the other side of the strip-shaped groove ensures that the antenna generates another radiation zero point at a certain frequency higher than the working frequency, thereby realizing the filtering effect. The aperture-controllable super-surface filter antenna can control the aperture of the super-surface antenna under the condition of keeping the working frequency band unchanged, improves the design and selection freedom degree of the wave beam width, forms a radiation zero point on the upper side and the lower side of the working frequency band, improves the frequency selectivity, realizes the filter effect and is beneficial to improving the anti-interference capability of the system.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (6)
1. A steerable bore subsurface filter antenna, comprising: a bottom layer structure (3) provided with a microstrip line (8), a middle layer structure (2) provided with a metallized ground (7) and a top layer structure (1) provided with a plurality of metal patches (4) which are sequentially stacked,
A strip-shaped groove (6) which is perpendicular to the microstrip line (8) is arranged on the metallized ground (7), a plurality of metal patches (4) are symmetrically arranged along the strip-shaped groove (6),
A plurality of metallized grounding holes (5) are symmetrically distributed on each metal patch (4) along the center of a diagonal line of the metal patch, metallized grounding holes (5) are also arranged on the metallized ground (7) at positions corresponding to the metallized grounding holes (5) of the metal patches (4), and each metal patch (4) is connected with the metallized ground (7) through the metallized grounding holes (5);
Wherein, the metallized grounding hole (5) on the metal patch (4) can make the electric field at the center of the metal patch (4) and the electric field at the two sides of the metal patch (4) cancel each other at a certain frequency lower than the working frequency of the antenna, thereby generating a radiation zero point;
the length of the microstrip line (8) on the other side of the strip-shaped slot (6) is such that the antenna generates a further radiation zero at a frequency higher than the operating frequency.
2. The ultra-surface filter antenna with controllable caliber according to claim 1, wherein two metal patches (4) symmetrically arranged along the strip-shaped groove (6) are arranged on the top layer structure (1).
3. The ultra-surface filter antenna with controllable caliber according to claim 1, characterized in that four metal patches (4) symmetrically arranged along the strip-shaped groove (6) and simultaneously symmetrically arranged along the microstrip line (8) are arranged on the top layer structure (1).
4. The ultra-surface filter antenna with controllable caliber according to claim 1, characterized in that sixteen metal patches (4) symmetrically arranged along the strip-shaped groove (6) and simultaneously symmetrically arranged along the microstrip line (8) are arranged on the top layer structure (1).
5. A steerable ultra-surface filter antenna according to any of claims 1-4, characterized in that the metal patch (4) is a square metal patch.
6. The ultra-surface filter antenna with controllable caliber according to claim 5, wherein four metallized grounding holes (5) are symmetrically arranged on each metal patch (4) along the diagonal center of the metal patch, and each metallized grounding hole (5) is arranged on the diagonal of the metal patch (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811438509.9A CN109411885B (en) | 2018-11-28 | Caliber-controllable ultra-surface filtering antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811438509.9A CN109411885B (en) | 2018-11-28 | Caliber-controllable ultra-surface filtering antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109411885A CN109411885A (en) | 2019-03-01 |
| CN109411885B true CN109411885B (en) | 2024-07-12 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345346A (en) * | 2007-07-11 | 2009-01-14 | 西北工业大学 | Novel microstrip antenna used for mobile phone double-frequency operation |
| CN105870623A (en) * | 2016-06-07 | 2016-08-17 | 电子科技大学 | Broadband circular polarization high-gain low-profile microstrip slot antenna capable of loading hyper-surface |
| CN209001127U (en) * | 2018-11-28 | 2019-06-18 | 南通至晟微电子技术有限公司 | A kind of super surface filtering antenna that bore is controllable |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345346A (en) * | 2007-07-11 | 2009-01-14 | 西北工业大学 | Novel microstrip antenna used for mobile phone double-frequency operation |
| CN105870623A (en) * | 2016-06-07 | 2016-08-17 | 电子科技大学 | Broadband circular polarization high-gain low-profile microstrip slot antenna capable of loading hyper-surface |
| CN209001127U (en) * | 2018-11-28 | 2019-06-18 | 南通至晟微电子技术有限公司 | A kind of super surface filtering antenna that bore is controllable |
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Country or region after: China Address after: West side of the first floor, Building 3, No.1 Xieshengbiao Road, Xinghui Village, Shaojiadu Street, Linhai City, Taizhou City, Zhejiang Province (self declared) Applicant after: Zhisheng (Linhai) Microelectronics Technology Co.,Ltd. Address before: 226000 building 15, 33 Xinkang Road, Gangzha District, Nantong City, Jiangsu Province Applicant before: NOVACO MICROELECTRONICS TECHNOLOGIES Ltd. Country or region before: China |
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