CN110676583A - Anti-interference array antenna for satellite navigation - Google Patents
Anti-interference array antenna for satellite navigation Download PDFInfo
- Publication number
- CN110676583A CN110676583A CN201911109061.0A CN201911109061A CN110676583A CN 110676583 A CN110676583 A CN 110676583A CN 201911109061 A CN201911109061 A CN 201911109061A CN 110676583 A CN110676583 A CN 110676583A
- Authority
- CN
- China
- Prior art keywords
- array
- ebg
- antenna
- floor
- fss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
-
- 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
Landscapes
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
An anti-interference array antenna for satellite navigation comprises a floor and a cover body which are covered together, wherein the surface of the floor is provided with a plurality of micro-strip patches, an array of EBG units is formed among the micro-strip patches, the micro-strip patches are used for generating feed excitation by utilizing wireless signals, and the EBG units are used for mutual coupling isolation between adjacent micro-strip patches; an array of FSS cells is formed on the surface of the enclosure, the FSS cells being used for bandpass filtering of wireless signals. Due to the fact that the microstrip patches and the EBG unit array are arranged on the floor of the antenna, good mutual coupling isolation effect can be achieved among the microstrip patches, the mutual interference phenomenon of feed excitation is avoided, and the anti-interference capability of the antenna is improved. In addition, the FSS unit array is arranged on the cover body of the antenna, so that the cover body has a band-pass filtering function, noise outside a related waveband range can be filtered when satellite navigation wireless signals reach, and the antenna can be effectively prevented from being influenced by interference signals.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to an anti-interference array antenna for satellite navigation.
Background
In the modern society, the society of the electronic information age comes forward due to rapid development of science and technology. Among the positioning navigation systems, the land-based radio navigation system used conventionally has a problem that it is difficult to support the requirement of high-precision positioning navigation in various application fields of modern society due to the problems of limited signal range covered by the system, low positioning precision and the like. Therefore, the satellite navigation system with high positioning precision and high speed is developed rapidly.
Satellite navigation systems have been established in many countries, so that satellite positioning and navigation technologies are widely used in daily life, for example, GPS, russian GLONASS, european Galileo and chinese Compass are all practically used and serve the society. In order to improve the positioning accuracy and solve the problem of a single system coverage blind area, a future satellite positioning navigation system adopts a mode compatible with various satellite navigation systems, and the future satellite positioning navigation system is used as a vital component unit-antenna in the satellite navigation system and plays a decisive role in the performance of the satellite navigation system in a certain sense.
Generally, the satellite navigation antenna adopts two modes of a microstrip antenna and a quadrifilar helix antenna, wherein the microstrip antenna has the defects of narrow working frequency band, low elevation gain and poor axial bit ratio, and the quadrifilar helix antenna has the defects of large size and difficult conformal property. In addition, in the field of satellite navigation engineering, satellite navigation signals are weak, and interference distortion occurs, so that an anti-interference antenna is often adopted, but the antenna cannot meet the high-end engineering requirement of receiving the satellite navigation signals with high precision. The traditional satellite navigation anti-interference antenna mostly adopts a single-feed-point or double-feed-point microstrip patch antenna, and due to the fact that factors such as unreasonable structural design can cause the antenna to have the problems of poor consistency among array elements, large mutual coupling among the array elements, unstable phase center and the like.
Disclosure of Invention
The invention mainly solves the technical problem of how to overcome the defects of an anti-interference antenna commonly used in the conventional satellite navigation system. Therefore, the anti-interference array antenna for satellite navigation has good array element isolation degree and high stable phase center, and can meet the requirements of high precision and high anti-interference performance in satellite navigation application.
An anti-interference array antenna for satellite navigation comprises a floor and a cover body which are covered together; the surface of the floor is provided with a plurality of micro-strip patches, and an EBG unit array is formed among the micro-strip patches; the micro-strip patches are used for generating feed excitation by utilizing wireless signals, and the EBG unit is used for performing mutual coupling isolation between the adjacent micro-strip patches; an array of FSS cells for bandpass filtering of wireless signals is formed on a surface of the enclosure.
The microstrip patches are uniformly distributed on the inner surface of the floor and form a geometrically symmetric multi-array element array structure; the microstrip patch is a four-point feed type microstrip patch.
The multi-array element array structure comprises array elements formed by seven micro-strip patches respectively, wherein one array element is arranged at the geometric center of the inner surface of the floor, and the other array elements surround the geometric center of the inner surface of the floor and are distributed in an equally-spaced annular shape.
The EBG unit is a UC-EBG structure, the UC-EBG structure comprises rectangular first metal patches, four edges of each first metal patch are respectively provided with a groove, and a metal connecting line perpendicular to the edge is formed in each groove in an outward extending mode.
The plurality of EBG units are arranged in a rectangular grid mode and loaded on the inner surface of the floor, and adjacent EBG units are connected through the metal connecting lines, so that the EBG unit array is formed.
The adjacent EBG units have opposite edges, and a gap is formed between the opposite edges; and the adjacent EBG units are used for constructing an equivalent LC resonance circuit according to band gap characteristics, weakening mutual coupling between the microstrip patches arranged around the EBG units and increasing isolation by using the LC resonance circuit.
The FSS unit comprises a second metal patch and a third metal patch, wherein the second metal patch is in a cross shape, and the third metal patch surrounds the second metal patch and extends along the outer contour of the second metal patch.
The FSS units are arranged in a triangular grid mode and are loaded on the inner surface or the outer surface of the cover body, and adjacent FSS units are connected through the third metal patch, so that the array of the FSS units is formed.
A gap is formed between the second metal patch and the third metal patch so as to form an equivalent band-pass filter circuit; the width and the perimeter of the gap are set according to the passing bandwidth and the center frequency of the wireless signal respectively.
The inner surface and the outer surface of the cover body are both provided with the array of the FSS units, so that a double-layer frequency selection structure is formed; the cover body adopts millimeter-sized glass fiber reinforced plastic material as a substrate.
The beneficial effect of this application is:
according to the anti-interference array antenna for satellite navigation of the embodiment, the anti-interference array antenna comprises a floor and a cover body which are covered together, wherein the surface of the floor is provided with a plurality of microstrip patches, an array of EBG units is formed among the microstrip patches, the microstrip patches are used for generating feed excitation by utilizing wireless signals, and the EBG units are used for mutual coupling isolation between adjacent microstrip patches; an array of FSS cells is formed on the surface of the enclosure, the FSS cells being used for bandpass filtering of wireless signals. On the first hand, as the microstrip patches and the EBG unit array are arranged on the floor of the antenna, the microstrip patches can realize good mutual coupling isolation effect, the mutual interference phenomenon of feed excitation is avoided, and the anti-interference capability of the antenna is improved; in the second aspect, the FSS unit array is arranged on the cover body of the antenna, so that the cover body has a band-pass filtering function, noise outside a related wave band range can be filtered when a satellite navigation wireless signal reaches, and the antenna can be effectively prevented from being influenced by an interference signal; in the third aspect, when the FSS unit is used for forming an equivalent band-pass filter circuit, the width and the perimeter of a metal patch gap in the FSS unit are easily set according to the passing bandwidth and the center frequency of a wireless signal, so that the working frequency bandwidth of the antenna is changed, and the bandwidth requirement of a mainstream satellite navigation system is met; in the fourth aspect, the FSS unit arrays are loaded and formed on the inner surface and the outer surface of the cover body, so that the antenna has a double-layer frequency selection structure, and the filtering performance of interference signals can be enhanced; in the fifth aspect, the plurality of EBG units are arranged in a rectangular grid and loaded on the inner surface of the floor, so that equivalent LC resonance circuits are constructed in the EBG unit array according to band gap characteristics, mutual coupling among microstrip patches arranged around can be weakened and isolation can be increased by means of the LC resonance circuits, and the anti-interference performance is further enhanced; in a sixth aspect, the anti-interference array antenna provided by the application effectively utilizes the space structures of the floor and the cover body, and reduces the sizes of the feed network and the anti-interference array, so that the overall structure of the antenna becomes compact, and the anti-interference array antenna has a high practical value.
Drawings
Fig. 1 is an exploded view of the structure of an anti-jamming array antenna according to the present application;
FIG. 2 is a schematic structural diagram of an inner floor of the anti-interference array antenna;
FIG. 3 is a schematic structural diagram of a microstrip patch;
FIG. 4 is a schematic structural diagram of an EBG cell;
fig. 5 is a schematic diagram of two EBG cells equivalent to an LC resonant circuit, wherein fig. 5a is a schematic diagram of a structure in which two EBG cells are connected in series, and fig. 5b is a circuit diagram of two EBG cells connected in series and equivalent to an LC resonant circuit;
FIG. 6 is a schematic diagram of the structure of the FSS unit;
FIG. 7 is a schematic diagram of an array of FSS elements formed on the outer surface of the inner housing of an anti-jamming array antenna;
FIG. 8 is a schematic diagram of the formation of an array of FSS elements on the inner surface of the inner housing of a tamper resistant array antenna.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
Referring to fig. 1, the present application discloses an anti-jamming array antenna for satellite navigation, which comprises a floor 1 and a cover 2, which are covered together, and are described below respectively.
The surface of the floor 1 is provided with a plurality of microstrip patches (as indicated by reference numeral 11) which form an array of EBG cells 12 therebetween. The microstrip patches 11 are used for generating feed excitation by using wireless signals, and the EBG unit 12 is used for mutual coupling isolation between adjacent microstrip patches. In the present embodiment, there are many EBG cells 12, and each EBG cell 12 is sequentially arranged and distributed on the surface of the floor 1, and is finally covered with the surface area except the microstrip patch 111.
An array of FSS elements 21 is formed on the surface of the housing 2, where the FSS elements 21 are used for bandpass filtering of the radio signal. In this embodiment there are a number of FSS units 12, each arranged in sequence on the surface of the cover 2, eventually lining up the surface area of the cover 2 other than the sides.
In this embodiment, the floor 1 and the cover 2 are covered together when in use, and the covering manner is not limited, and includes but is not limited to a snap connection, a screw connection, an adhesive connection, and the like.
In this embodiment, the floor 1 and the cover 2 may have a circular structure or a square structure, and the specific structural form may be set according to the requirement of the user, which is not limited herein.
It should be noted that EBG (Electromagnetic Band Gap) is a periodic structure, and can control the propagation of Electromagnetic waves, and by properly selecting the size, material, and shape of the scattering medium, the Electromagnetic waves can not propagate in some frequency bands. Generally, the resulting EBG architecture is used to address power integrity issues encountered in high speed circuit designs, with its superior performance in synchronous switching noise suppression being favored.
It should be noted that FSS (Frequency Selective Surface) is a two-dimensional periodic array structure, and is a spatial filter in nature, and exhibits a significant band-pass or band-stop filtering characteristic when interacting with electromagnetic waves, and is widely applied to microwave, infrared, and visible light bands because of its specific Frequency selection function. In general, the FSS structure thus formed is classified into a patch type (dielectric type) in which the same metal elements are periodically attached to the surface of a dielectric, and a slot type (waveguide type) in which slots are periodically formed in a metal plate.
The microstrip patch is arranged on a thin medium substrate, a metal thin layer is attached to one surface of the thin medium substrate to serve as a grounding plate, the other surface of the thin medium substrate is made into a metal patch with a certain shape by a photoetching method, and the microstrip line or the coaxial probe is used for feeding the patch to form the antenna. The microstrip antenna formed by the microstrip patch has the advantages of small volume, light weight, simple manufacturing process, easy realization of conformal property and the like, and is widely applied.
In the present embodiment, referring to fig. 2, a plurality of microstrip patches (for example, the reference numeral 11) are uniformly distributed on the inner surface of the floor 1, and form a geometrically symmetric multi-array element array structure. And the microstrip patch is a four-point feed type microstrip patch.
It should be noted that the energy of each polarization channel of the four-point feed type microstrip patch is uniformly distributed to four feeding points, and the phase differences between the four feeding points are equal to improve the polarization purity of the patch surface field, so as to obtain higher cross polarization (see the description in the journal, dual-polarization single-layer microstrip back cavity antenna of four-point feed, fire control radar technology, vol 45, No. 1, 2016). The structure of the four-point feed type microstrip patch in fig. 3 can be seen, the antenna consistency of the microstrip antenna formed by the four-point feed type microstrip patch has the advantages of good axial ratio performance and high stability of phase center characteristics compared with that of a single-feed-point microstrip patch and a double-feed-point microstrip patch, geometric symmetry design and regular feed excitation are favorably achieved, the four-point feed type microstrip patch can be used for a satellite navigation receiving system with high precision requirements, and navigation systems such as a GPS (global position system), a Galieo (Galieo) system and a Beidou system can be simultaneously compatible when a multi-frequency design is adopted. In addition, the microstrip antenna formed by the four-point feed type microstrip patch can be equivalent to a resonant cavity, and has a higher value near the resonant frequency, namely in the working frequency band.
In a specific embodiment, referring to fig. 2, the multi-array element array structure formed by a plurality of microstrip patches (for example, reference numeral 11) includes array elements formed by seven microstrip patches, wherein one array element is disposed at the geometric center of the inner surface of the floor 1, and the other array elements surround the geometric center of the inner surface of the floor 1 and are distributed in an equally spaced circular ring shape. The multi-array element array structure is beneficial to improving the antenna consistency of the microstrip patch and forming a high-stability phase center.
Further, referring to fig. 4, the EBG unit 12 is a UC-EBG structure, the UC-EBG structure in this embodiment includes a rectangular first metal patch 121, four edges of the first metal patch 121 are respectively formed with a groove (as indicated by reference numeral 122), and each groove 122 extends inward and outward to form a metal connection line 123 perpendicular to the edge. In addition, the shape of the first metal patch 121 can be obtained by etching a copper-clad layer, and the floor panel 1 should be a dielectric plate having an electrical insulation property.
It should be noted that UC-EBG (coplanar compact electromagnetic band gap) belongs to a metal-dielectric type photonic crystal structure, and the period size of this type of photonic crystal can reach 1/10 wavelength or even smaller, so the overall size can be made more compact.
Further, referring to fig. 1 and 2, a plurality of EBG cells 12 are arranged in a rectangular grid and loaded on the inner surface of the floor panel 1, and adjacent EBG cells 12 are connected by a metal connection line (e.g., reference numeral 123 in fig. 4), thereby forming an array of EBG cells 12. It can be understood that the rectangular grid arrangement can achieve the effects of compact structure and full utilization of surface space, and certainly, other grid arrangement modes such as triangular grids, staggered grids and the like can be adopted without limitation.
Further, referring to fig. 5a, adjacent EBG cells 121 have facing edges with a gap 124 formed therebetween. The adjacent EBG cells 121 are configured to construct an equivalent LC resonance circuit according to band gap characteristics, and to weaken mutual coupling between microstrip patches arranged around the LC resonance circuit and increase isolation.
It should be noted that the complexity of the UC-EBG structure is mainly utilized to provide the inductance and capacitance, so as to provide the inductance and capacitanceAn LC resonance circuit is formed, which can refer to the circuit configuration shown in fig. 5 b. The UC-EBG structure is formed based on a resonance mechanism, and can be qualitatively analyzed by using an LC equivalent circuit, and the surface impedance of the UC-EBG structure is ZsAnd is represented by ZS＝jωL/(1-ω2LC) at the resonance frequency
When Z issTends to infinity and thus the surface wave cannot propagate near the resonant frequency, forming a surface wave bandgap. The values of L and C are mainly determined by a UC-EBG structure, so that the design of the periodic unit of the UC-EBG structure has important influence on the band gap characteristic, and the mutual coupling among array elements (namely a seven-array element array formed by a plurality of microstrip patches) shown in the figure 2 can be reduced by designing and tuning various structural parameters of the UC-EBG structure, so that the electromagnetic wave propagation among the array elements is prevented, and the isolation among the units is improved.
In this embodiment, referring to fig. 6, the FSS units 21 distributed on the cover 2 include a second metal patch 211 and a third metal patch 212, where the second metal patch 211 is cross-shaped, and the third metal patch 212 surrounds the second metal patch 211 and extends along the outer contour of the second metal patch 211. In addition, the shapes of the second metal patch 211 and the third metal patch 212 may be obtained by etching a copper clad layer, and the cover 2 should be a dielectric plate having an electrical insulation property.
Further, referring to fig. 7 and 8, a plurality of FSS units 21 are arranged in a triangular grid and are loaded on the inner surface or the outer surface (the outer surface is illustrated in fig. 7, and the inner surface is illustrated in fig. 8) of the housing 2, and adjacent FSS units 21 are connected by a third metal patch 212, thereby forming an array of FSS units 21.
It should be noted that the triangular grid arrangement formed by the FSS units 21 has two main advantages: (1) under the condition of the same area, the number of units required by triangular grid arrangement is less than that of units required by rectangular grid arrangement; (2) the triangular grid arrangement can make the unit arrangement more compact. Of course, other grid arrangements may be adopted, such as rectangular grid, staggered grid, etc., without limitation.
Further, referring to fig. 6, a gap 213 is formed between the second metal patch 211 and the third metal patch 212 to form an equivalent band pass filter circuit. The width and circumference of slot 213 are set according to the pass-through bandwidth and center frequency of the wireless signal, respectively, so that the user can reasonably set the width and circumference of slot 213 according to the frequency of the satellite navigation wireless signal. Preferably, the perimeter of slot 213 is made approximately equal to the equivalent wavelength in the medium corresponding to the center frequency of the wireless signal.
In one particular embodiment, referring to fig. 1, 7 and 8, both the inner and outer surfaces of the housing 2 are formed with an array of FSS cells 21, thereby forming a dual layer frequency selective structure. It will be appreciated that when the array of FSS elements 21 is formed only on the outer or inner surface, the transition band is relatively shallow and that the array of FSS elements 21 may be formed on both the inner and outer surfaces of the housing 2 in order to make the band-pass filtered transition band steeper and to exhibit better filtering characteristics.
Further, the thickness and the dielectric constant of the cover body 2 both affect the wave-transparent characteristic of the loading FSS unit 21, and in order to obtain a better wave-transparent characteristic, the cover body 2 may use a glass fiber reinforced plastic material with a thickness of millimeter level as a substrate, for example, the substrate uses a glass fiber reinforced plastic material with a dielectric constant of 3.5 and a thickness of 2 mm.
Those skilled in the art will appreciate that the anti-jamming array antenna disclosed in the present application has the following advantages: (1) the micro-strip patches and the EBG unit array are arranged on the floor of the antenna, so that a good mutual coupling isolation effect can be realized among the micro-strip patches, the mutual interference phenomenon of feed excitation is avoided, and the anti-interference capability of the antenna is improved; (2) the FSS unit array is arranged on the cover body of the antenna, so that the cover body has a band-pass filtering function, noise outside a related wave band range can be filtered when satellite navigation wireless signals reach, and the antenna can be effectively prevented from being influenced by interference signals; (3) when the FSS unit is used for forming an equivalent band-pass filter circuit, the width and the perimeter of a metal patch gap in the FSS unit are easily set according to the passing bandwidth and the center frequency of a wireless signal, so that the working frequency bandwidth of an antenna is changed, and the bandwidth requirement of a mainstream satellite navigation system is met; (4) the FSS unit arrays are loaded and formed on the inner surface and the outer surface of the cover body, so that the antenna has a double-layer frequency selection structure, and the filtering performance of interference signals can be enhanced; (5) the EBG units are arranged in a rectangular grid mode and are loaded on the inner surface of the floor, so that equivalent LC resonance circuits are constructed in the EBG unit array according to band gap characteristics, mutual coupling among microstrip patches arranged around can be weakened and isolation is increased by means of the LC resonance circuits, and anti-interference performance is further enhanced; (6) the anti-interference array antenna provided by the application effectively utilizes the space structures of the floor and the cover body, reduces the sizes of the feed network and the anti-interference array, enables the whole structure of the antenna to become compact, and has high practical value.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (10)
1. An anti-interference array antenna for satellite navigation is characterized by comprising a floor and a cover body which are covered together;
the surface of the floor is provided with a plurality of micro-strip patches, and an EBG unit array is formed among the micro-strip patches; the micro-strip patches are used for generating feed excitation by utilizing wireless signals, and the EBG unit is used for performing mutual coupling isolation between the adjacent micro-strip patches;
an array of FSS cells for bandpass filtering of wireless signals is formed on a surface of the enclosure.
2. The anti-jamming array antenna of claim 1, wherein the plurality of microstrip patches are uniformly distributed on the inner surface of the floor and form a geometrically symmetric multi-array element array structure; the microstrip patch is a four-point feed type microstrip patch.
3. The anti-jamming array antenna of claim 2, wherein the multi-array element array structure includes seven array elements formed by the microstrip patches, one of the array elements is disposed at the geometric center of the inner surface of the floor, and the other array elements surround the geometric center of the inner surface of the floor and are distributed in an equally spaced circular ring shape.
4. The anti-jamming array antenna of claim 3, wherein the EBG unit is a UC-EBG structure, the UC-EBG structure includes a rectangular first metal patch, four edges of the first metal patch are respectively formed with a groove, and a metal connecting line perpendicular to the edge extends outwards from each groove.
5. The anti-jamming array antenna of claim 4, wherein a plurality of the EBG cells are arranged in a rectangular grid and loaded on the inner surface of the floor, and adjacent EBG cells are connected by the metal connecting lines, thereby forming the array of EBG cells.
6. The anti-jamming array antenna of claim 5, wherein adjacent ones of the EBG cells have facing edges with a gap formed therebetween; and the adjacent EBG units are used for constructing an equivalent LC resonance circuit according to band gap characteristics, weakening mutual coupling between the microstrip patches arranged around the EBG units and increasing isolation by using the LC resonance circuit.
7. The antijam array antenna of any of claims 1-6, wherein the FSS unit includes a second metal patch and a third metal patch, the second metal patch being cross-shaped, the third metal patch surrounding the second metal patch and extending along an outer contour of the second metal patch.
8. The anti-jamming array antenna of claim 7, wherein a plurality of the FSS units are arranged in a triangular grid and loaded on the inner surface or the outer surface of the housing, and adjacent FSS units are connected by the third metal patch, thereby forming the array of FSS units.
9. The antijam array antenna of claim 8, wherein a slot is formed between said second metal patch and said third metal patch to form an equivalent bandpass filter circuit; the width and the perimeter of the gap are set according to the passing bandwidth and the center frequency of the wireless signal respectively.
10. The tamper-resistant array antenna of claim 8, wherein the interior and exterior surfaces of the housing are each formed with an array of the FSS elements, thereby forming a dual-layer frequency selective structure; the cover body adopts millimeter-sized glass fiber reinforced plastic material as a substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911109061.0A CN110676583A (en) | 2019-11-13 | 2019-11-13 | Anti-interference array antenna for satellite navigation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911109061.0A CN110676583A (en) | 2019-11-13 | 2019-11-13 | Anti-interference array antenna for satellite navigation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110676583A true CN110676583A (en) | 2020-01-10 |
Family
ID=69087295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911109061.0A Pending CN110676583A (en) | 2019-11-13 | 2019-11-13 | Anti-interference array antenna for satellite navigation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110676583A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111262018A (en) * | 2020-02-02 | 2020-06-09 | 西南交通大学 | Broadband low RCS patch antenna based on FSS transmission and reflection cancellation |
| CN113036454A (en) * | 2021-03-11 | 2021-06-25 | 中国科学院空天信息创新研究院 | MIMO array antenna beam optimization device and method based on antenna dummy |
| WO2022082957A1 (en) * | 2020-10-23 | 2022-04-28 | 捷开通讯(深圳)有限公司 | Antenna structure and mobile terminal |
| CN116826347A (en) * | 2023-07-26 | 2023-09-29 | 北京星英联微波科技有限责任公司 | Full-bandwidth tunable waveguide magic T with electromagnetic damage resistance |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117969A (en) * | 2011-03-11 | 2011-07-06 | 深圳市华信天线技术有限公司 | Array antenna |
| CN102769198A (en) * | 2012-06-29 | 2012-11-07 | 深圳光启创新技术有限公司 | Artificial electromagnetic material, radome and antenna system |
| US20190098750A1 (en) * | 2017-09-27 | 2019-03-28 | Lg Electronics Inc. | Electronic device |
-
2019
- 2019-11-13 CN CN201911109061.0A patent/CN110676583A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117969A (en) * | 2011-03-11 | 2011-07-06 | 深圳市华信天线技术有限公司 | Array antenna |
| CN102769198A (en) * | 2012-06-29 | 2012-11-07 | 深圳光启创新技术有限公司 | Artificial electromagnetic material, radome and antenna system |
| US20190098750A1 (en) * | 2017-09-27 | 2019-03-28 | Lg Electronics Inc. | Electronic device |
Non-Patent Citations (1)
| Title |
|---|
| QIN HAICHAO ET AL: ""Novel Design of 4 Elements GPS Antenna Array with UC-EBG Structure"", 《2013 IEEE INTERNATIONAL CONFERENCE ON MICROWAVE TECHNOLOGY & COMPUTATIONAL ELECTROMAGNETICS》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111262018A (en) * | 2020-02-02 | 2020-06-09 | 西南交通大学 | Broadband low RCS patch antenna based on FSS transmission and reflection cancellation |
| CN111262018B (en) * | 2020-02-02 | 2021-03-16 | 西南交通大学 | Broadband low RCS patch antenna based on FSS transmission and reflection cancellation |
| WO2022082957A1 (en) * | 2020-10-23 | 2022-04-28 | 捷开通讯(深圳)有限公司 | Antenna structure and mobile terminal |
| CN113036454A (en) * | 2021-03-11 | 2021-06-25 | 中国科学院空天信息创新研究院 | MIMO array antenna beam optimization device and method based on antenna dummy |
| CN116826347A (en) * | 2023-07-26 | 2023-09-29 | 北京星英联微波科技有限责任公司 | Full-bandwidth tunable waveguide magic T with electromagnetic damage resistance |
| CN116826347B (en) * | 2023-07-26 | 2023-12-26 | 北京星英联微波科技有限责任公司 | Full-bandwidth tunable waveguide magic T with electromagnetic damage resistance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110676583A (en) | Anti-interference array antenna for satellite navigation | |
| Rashid et al. | An overview of three-dimensional frequency-selective structures | |
| CN107331974B (en) | Circular polarized antenna based on ridge gap waveguide | |
| US6940457B2 (en) | Multifrequency antenna with reduced rear radiation and reception | |
| CN110190408B (en) | Circularly polarized electromagnetic dipole array antenna | |
| CN107492713B (en) | double-circular-polarization array antenna | |
| CN100395916C (en) | Frequency selecting surface based on substrate integrated waveguide technology | |
| CN109411894B (en) | Dual-polarized broadband external suppression three-dimensional frequency selection surface | |
| KR20090060802A (en) | Frequency selective surface structure for multi frequency band | |
| CN112382854B (en) | 5G base station full-duplex ultra-high-isolation dual-polarized MIMO antenna array | |
| CN104795638A (en) | Dual-band circularly-polarized co-aperture microstrip antenna | |
| Lee et al. | Band-switchable substrate-integrated waveguide resonator and filter | |
| US9391374B2 (en) | Reciprocal circular polarization selective surfaces and elements thereof | |
| Yang et al. | Design method for low-profile, harmonic-suppressed filter-antennas using miniaturized-element frequency selective surfaces | |
| WO2019213784A1 (en) | Applications of metamaterial electromagnetic bandgap structures | |
| CN112531355B (en) | +/-45-degree dual-polarized millimeter wave array antenna | |
| Afzal et al. | Low-profile higher-order narrowband bandpass miniaturized-element frequency-selective surface | |
| CN114361806A (en) | Miniaturized suction-penetration integrated frequency selective surface | |
| Yang et al. | A novel miniaturized frequency selective surface with excellent center frequency stability | |
| Sun et al. | Compact substrate integrated waveguide filtering antennas: A review | |
| CA2936482C (en) | Metamaterial electromagnetic bandgap structures | |
| CN107171042B (en) | Frequency selective surface structure | |
| Tang et al. | Differentially SIW TE 20-mode Fed substrate integrated filtering dielectric resonator antenna for 5G millimeter wave application | |
| Ghaloua et al. | Mutual coupling reduction and miniaturization arrays antennas using new structure of EBG | |
| Wang et al. | Electromagnetic functional surfaces related to frequency response control using back-loaded radio frequency circuits |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200110 |