CN117712685A - Broadband circularly polarized high-gain low-sidelobe antenna - Google Patents
Broadband circularly polarized high-gain low-sidelobe antenna Download PDFInfo
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- CN117712685A CN117712685A CN202410160587.6A CN202410160587A CN117712685A CN 117712685 A CN117712685 A CN 117712685A CN 202410160587 A CN202410160587 A CN 202410160587A CN 117712685 A CN117712685 A CN 117712685A
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- 239000002184 metal Substances 0.000 claims abstract description 177
- 230000010287 polarization Effects 0.000 claims description 10
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- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
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- 230000000694 effects Effects 0.000 abstract description 4
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- 230000003071 parasitic effect Effects 0.000 description 3
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Abstract
The invention relates to a broadband circularly polarized high-gain low-sidelobe antenna, which is based on a metal base plate (1) provided with a patch antenna (2), and is combined with a metal mesh plate (3), a resonant cavity is constructed, the patch antenna (2) is used as a feed source to excite the resonant cavity to work, electromagnetic fields with approximately equal phases are generated at each mesh of the metal mesh plate (3), and then high-gain beams are generated on the whole metal mesh plate (3), and cavity resonant modes in the resonant cavity and patch resonant modes of the patch antenna (2) are coupled, so that additional resonant points can be generated on impedance and axial ratio curves, the improvement of the impedance bandwidth and the axial ratio bandwidth of the antenna is realized, and in addition, the resonant cavity has the characteristics of strong field near the center of the antenna and small field intensity near the periphery of the antenna, and the effect of reducing the sidelobes can be realized.
Description
Technical Field
The invention relates to a broadband circularly polarized high-gain low-sidelobe antenna, and belongs to the technical field of radio frequency antenna design.
Background
The existing common circularly polarized antennas for RFID readers are as follows: the simple circularly polarized patch antenna structurally comprises a rectangular or corner-cut square patch, a ground plane and a feed point, and the principle is that the patch supports two linearly polarized resonant modes, the polarizations are orthogonal, the resonant frequencies are slightly different, two linearly polarized modes with equal amplitude and 90-degree phase difference are generated by exciting the two modes simultaneously, circularly polarized radiation can be obtained by superposition, the gain of the simple patch antenna can reach about 8-9dBi at maximum, and if higher gain is needed, the simple patch antenna can be realized by an antenna array. However, the bandwidth of a simple circularly polarized patch antenna is narrow, especially the circularly polarized bandwidth (3 dB axial ratio bandwidth) is very narrow, and is difficult to reach 1%, and for some common applications, such as RFID readers, the bandwidth cannot meet the requirement. And for the occasion that needs high gain, need to do the antenna array, and the antenna array needs to use the power division network on the one hand, can introduce extra loss, reduces efficiency. On the other hand, the antenna array and the power division network may complicate the structure, make processing difficult, and increase the cost.
The stacked patch antenna structure is characterized in that a parasitic patch is additionally added on the basis of a simple circularly polarized patch antenna, the parasitic patch is generally placed above a main antenna, the size is slightly small, the principle is that the parasitic patch resonates, an axial ratio zero point is additionally generated, the axial ratio bandwidth of the antenna can be greatly improved, the gain is similar to that of the simple patch antenna, and if higher gain is needed, the antenna can also be realized in the form of an antenna array. The stacked patch antenna has a large bandwidth and can achieve a sufficient bandwidth in a relatively thin case, but its structure is complicated, and as its name suggests, a multi-layer structure is required, which increases the cost and reduces the production efficiency, and it suffers from the same problems as a simple patch antenna for a case where a high gain is required.
The spiral antenna is similar to a spring in structure and is divided into an axial mode spiral antenna and a normal mode spiral antenna, wherein the axial mode spiral antenna radiates directional beams, can be used for an RFID reader-writer, is particularly suitable for occasions with no strict requirements on the height of the antenna but higher requirements on bandwidth, and has the maximum gain along the direction of the spiral axis, and the circumference of each circle of the axial mode spiral antenna is close to one wavelength. In general applications, the electrical size is relatively large, typically several wavelengths, and in RFID reader applications, control is typically around one wavelength. The bandwidth of the helical antenna can be made particularly wide, far beyond the requirements of the RFID band, but its height is large, at least around one wavelength, much larger than the patch antenna, while in principle it is possible to make a higher gain, say 20dBi, but this requires an exceptionally large height, possibly up to several meters, which is impractical for RFID applications. At acceptable lengths (e.g., tens of cm), the gain is also not high, typically not exceeding 10dBi.
Disclosure of Invention
The invention aims to solve the technical problem of providing a broadband circularly polarized high-gain low-sidelobe antenna, which is characterized in that the design of a resonant cavity structure is introduced, the generation of high-gain beams is realized, and the working efficiency is improved.
The invention adopts the following technical scheme for solving the technical problems: the invention designs a broadband circularly polarized high-gain low-sidelobe antenna, which comprises a metal bottom plate, a patch antenna and a metal mesh plate, wherein the metal bottom plate is arranged on the patch antenna; the patch antenna is arranged on one surface of the metal bottom plate, and a feeding point on the patch antenna is connected with the reader-writer through a coaxial cable; the circumference of each mesh is respectively smaller than twice the wavelength of the antenna, the metal mesh plate is parallel to the surface of the metal base plate and positioned on one side of the metal base plate where the patch antenna is arranged, the distance between the metal base plate and the metal mesh plate is positioned in a preset fluctuation range in the direction of the decimal value, which is half of the wavelength of the antenna, the patch antenna is positioned between the metal mesh plate and the metal base plate, and the projection of the patch antenna is positioned in the projection of the metal mesh plate along the projection direction perpendicular to the metal base plate.
As a preferred technical scheme of the invention: the metal mesh plate and the metal bottom plate are fixedly connected at two ends of each supporting piece respectively, so that the position between the metal mesh plate and the metal bottom plate is set.
As a preferred technical scheme of the invention: based on the supporting piece is a conductive supporting piece, the conductive supporting piece is a planar conductive supporting plate, the upper end and the lower end of each conductive supporting plate are respectively connected with the edge of the metal mesh plate and the corresponding position edge on the metal bottom plate, the adjacent conductive supporting plates are connected with each other by connecting plates made of the same conductive material along the position edge of the metal mesh plate and the position edge of the metal bottom plate, the upper edge and the lower edge of each connecting plate are respectively abutted with the edge of the metal mesh plate and the edge of the metal bottom plate, and each conductive supporting plate and each connecting plate are combined to form a conductive surrounding side plate abutted with the edge of the metal mesh plate and the edge of the metal bottom plate.
As a preferred technical scheme of the invention: at least one through hole penetrating through two sides of the conductive surrounding side plate is arranged on the conductive surrounding side plate.
As a preferred technical scheme of the invention: the metal bottom plate and the metal mesh plate are polygonal with the same shape, each side of the metal bottom plate corresponds to the corresponding side of the metal mesh plate in position to form each group of opposite sides, at least two through holes are sequentially formed in the partial plate of each group of opposite sides of the conductive surrounding side plate along the corresponding edge direction of the metal bottom plate, and the distance between the centers of the adjacent through holes is smaller than the wavelength of the antenna.
As a preferred technical scheme of the invention: the through holes on the conductive surrounding side plates are polygonal, and the longest sides of the polygons are respectively parallel to the surface of the metal bottom plate.
As a preferred technical scheme of the invention: the patch antenna is arranged on the surface of the metal base plate within a preset radius range by taking the center of the surface of the metal base plate as the center of a circle.
As a preferred technical scheme of the invention: the patch antenna is a circular polarization corner cut patch antenna with capacitive coupling feeding or a circular polarization corner cut patch antenna with direct feeding by a probe, and in the circular polarization corner cut patch antenna with direct feeding by the probe, a U-shaped groove is arranged on the surface of the antenna.
As a preferred technical scheme of the invention: the metal bottom plate and the metal mesh plate are polygonal with the same shape and size, each side on the metal bottom plate corresponds to the corresponding side on the metal mesh plate in position, a connecting line between the center of the metal bottom plate and the center of the metal mesh plate is perpendicular to the surface of the metal bottom plate, and all the meshes distributed on the surface array of the metal mesh plate are polygonal meshes with the same shape and size.
As a preferred technical scheme of the invention: the metal bottom plate and the metal mesh plate are long polygons with the same size, polygonal meshes distributed on the surface of the metal mesh plate in an array mode are rectangular meshes, the posture angles of the rectangular meshes on the surface of the metal mesh plate are the same, and the length of the long sides of the rectangular meshes on the surface of the metal mesh plate is smaller than half of the wavelength of an antenna.
Compared with the prior art, the broadband circularly polarized high-gain low-sidelobe antenna has the following technical effects:
the broadband circularly polarized high-gain low-sidelobe antenna is designed by the invention, based on a metal base plate provided with the patch antenna, a resonant cavity is constructed by combining a metal mesh plate, the patch antenna is used as a feed source to excite the resonant cavity to work, electromagnetic fields with approximately equal phases are generated at each mesh of the metal mesh plate, and then high-gain wave beams are generated on the whole metal mesh plate, and the cavity resonant mode in the resonant cavity and the patch resonant mode of the patch antenna are coupled, so that additional resonant points can be generated on impedance and axial ratio curves, the improvement of the impedance bandwidth and the axial ratio bandwidth of the antenna is realized, and in addition, the resonant cavity has the characteristics of strong field near the center position of the antenna and small field intensity near the periphery of the antenna, and the effect of reducing the sidelobes can be realized.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of a wideband circularly polarized high-gain low-side lobe antenna according to the present invention;
FIG. 2 is a diagram of a patch antenna in accordance with one embodiment of the present invention;
fig. 3 is an S-parameter illustration of a first embodiment of the design of the wideband circularly polarized high gain low side lobe antenna of the present invention;
fig. 4 is a gain and axial ratio schematic of a first embodiment of the design of the wideband circularly polarized high gain low side lobe antenna of the present invention;
fig. 5 is a schematic diagram of a wideband circularly polarized high gain low side lobe antenna according to an embodiment of the present invention in a direction of 0 ° and 90 ° respectively;
fig. 6 is a schematic structural diagram of a second embodiment of the wideband circularly polarized high-gain low-sidelobe antenna of the present invention;
FIG. 7 is a diagram of a patch antenna in a second embodiment of the wideband circularly polarized high gain low side lobe antenna of the present invention;
fig. 8 is an S-parameter illustration of a second embodiment of the present invention for designing a wideband circularly polarized high gain low side lobe antenna;
fig. 9 is a gain and axial ratio schematic of a second embodiment of the design of the wideband circularly polarized high gain low side lobe antenna of the present invention;
fig. 10 is a schematic diagram of the directions of the wideband circularly polarized high gain low side lobe antenna of the present invention on the 0 ° plane and the 90 ° plane, respectively.
The antenna comprises a metal bottom plate 1, a patch antenna 2, a metal mesh plate 3, a support piece 4, a conductive surrounding side plate 5, a patch antenna radiator 6, a coupling feed structure 7, a metal support column 8, a patch slot 9, an insulating support column 10 and a feed probe 11.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the drawings.
The invention designs a broadband circularly polarized high-gain low-sidelobe antenna, which particularly comprises a metal bottom plate 1, a patch antenna 2 and a metal mesh plate 3 in practical application; the patch antenna 2 is arranged on one surface of the metal base plate 1, and a feeding point on the patch antenna 2 is connected with the reader-writer through a coaxial cable; the circumference of each mesh is respectively smaller than twice the wavelength of the antenna, the circumference of each mesh is distributed on the surface of the metal mesh plate 3, the metal mesh plate 3 is parallel to the surface of the metal base plate 1, the metal base plate 1 is positioned on one side of the patch antenna 2, the distance between the metal base plate 1 and the metal mesh plate 3 is positioned in a preset fluctuation range in the direction of the decimal value, which is half of the wavelength of the antenna, the patch antenna 2 is positioned between the metal mesh plate 3 and the metal base plate 1, and the projection of the patch antenna 2 is positioned in the projection of the metal mesh plate 3 along the projection direction perpendicular to the metal base plate 1.
Regarding the spatial position relation setting of the metal mesh plate 3 relative to the metal bottom plate 1, in practical application, at least one supporting piece 4 is specifically designed and introduced, the supporting piece 4 is a conductive supporting piece or a non-conductive supporting piece, two ends on each supporting piece 4 are respectively and fixedly connected with the metal mesh plate 3 and the metal bottom plate 1, so that the position setting between the metal mesh plate 3 and the metal bottom plate 1 is realized.
In the scheme of realizing the position setting between the metal mesh plate 3 and the metal bottom plate 1 by connecting the conductive support pieces, the conductive support pieces can be further designed to be planar conductive support plates, the upper end and the lower end of each conductive support plate are respectively connected with the edge of the metal mesh plate 3 and the corresponding position edge on the metal bottom plate 1, the side edges of the adjacent conductive support plates are connected with each other by connecting plates made of the same conductive material along the position edge of the metal mesh plate 3 and the position edge of the metal bottom plate 1, the upper edge and the lower edge of each connecting plate are respectively butted with the edge of the metal mesh plate 3 and the edge of the metal bottom plate 1 which are faced by the edges, and the conductive surrounding side plates 5 butted with the edge of the metal mesh plate 3 and the edge of the metal bottom plate 1 are formed by combining the conductive support plates and the connecting plates.
In the scheme of realizing full surrounding to the metal mesh plate 3 and the metal bottom plate 1 side by the conductive surrounding side plate 5, at least one through hole penetrating through two sides of the metal mesh plate 3 is further designed and arranged on the conductive surrounding side plate 5, and in the application implementation of the through hole, the metal bottom plate 1 and the metal mesh plate 3 are designed by further matching with a whole structure, the metal bottom plate 1 and the metal mesh plate 3 are specifically designed to be polygons with the same shape, each side on the metal bottom plate 1 corresponds to the corresponding side on the metal mesh plate 3 in position to form each group of position opposite sides, at least two through holes are sequentially arranged on the local plates corresponding to each group of position opposite sides on the conductive surrounding side plate 5 along the corresponding edge direction of the metal bottom plate 1, and the distance between the centers of the adjacent through holes is smaller than the antenna wavelength.
In practical application, each through hole on the conductive surrounding side plate 5 is designed to be polygonal, and the longest edge of each polygon is designed to be parallel to the surface of the metal bottom plate 1, where a rectangle is used as the shape of each through hole on the conductive surrounding side plate 5.
In practical application, the patch antenna 2 is disposed at a position on the surface of the metal base plate 1, and specifically may be disposed within a preset radius range with the center of the surface of the metal base plate 1 as a center. And on the selective application of the patch antenna 2, such as selecting a circular polarized cut angle patch antenna for capacitive coupling feeding or a circular polarized cut angle patch antenna for direct feeding of a probe, and for the circular polarized cut angle patch antenna for direct feeding of the probe, a U-shaped groove is provided specifically on the antenna surface.
In the implementation of the whole design, the metal bottom plate 1 and the metal mesh plate 3 are further designed, the metal bottom plate 1 and the metal mesh plate 3 are polygonal with the same shape and size, each side on the metal bottom plate 1 corresponds to the corresponding side on the metal mesh plate 3 in position, the connecting line between the center of the metal bottom plate 1 and the center of the metal mesh plate 3 is perpendicular to the surface of the metal bottom plate 1, and the meshes distributed on the surface array of the metal mesh plate 3 are polygonal meshes with the same shape and size.
The technical scheme designs the broadband circularly polarized high-gain low-sidelobe antenna, based on the metal base plate 1 provided with the patch antenna 2, the resonant cavity is constructed by combining the metal mesh plate 3, the patch antenna 2 is used as a feed source to excite the resonant cavity to work, and excited resonant modes are basically in equal phases in the whole resonant cavity, so that electromagnetic fields with approximately equal phases can be generated at each mesh of the metal mesh plate 3, and then high-gain beams are generated on the whole metal mesh plate 3 by the electromagnetic fields with equal phases.
In the design of the patent, the patch antenna 2 serving as a feed source adopts a circular polarized antenna, and the resonant cavity is designed to be rotationally symmetrical as a whole according to specific implementation (although meshes are not strictly square), so that the antenna is designed to radiate circular polarized beams, and the circular polarization principle is realized.
In the design of the invention, the cavity resonant mode in the resonant cavity and the patch resonant mode of the patch antenna 2 are coupled, so that additional resonant points can be generated on the impedance and axial ratio curve, and the impedance bandwidth and axial ratio bandwidth of the antenna are realized and are several times larger than those of a simple circularly polarized patch serving as a feed source.
Furthermore, the invention designs modes in the antenna cavity whose field strength distribution exhibits: the characteristics of strong field near the center of the antenna and small field intensity near the periphery of the antenna are equivalent to amplitude weighting in the array antenna, and the effect of reducing side lobes can be achieved.
The above design technical scheme is applied to practice, based on that the metal bottom plate 1 and the metal mesh plate 3 are long sides with the same size, a connecting line between the center of the metal bottom plate 1 and the center of the metal mesh plate 3 is perpendicular to the surface of the metal bottom plate 1, the array of the surface of the metal mesh plate 3 distributes each rectangular mesh with the same attitude angle, and the length of the long side of each rectangular mesh on the surface of the metal mesh plate 3 is smaller than half of the wavelength of an antenna, the design is based on the positional relationship between the metal bottom plate 1 and the metal mesh plate 3, specifically, for example, the design is divided into two embodiments, namely, the connection between the metal bottom plate 1 and the metal mesh plate 3 is realized by each supporting piece 4 of a conductive supporting piece or a non-conductive supporting piece, as shown in fig. 1, and a patch antenna is shown in fig. 2, wherein a patch antenna radiator 6 is supported on the metal bottom plate 1 by a metal supporting post 8, and a coupling feed structure 7 is arranged on the patch antenna radiator 6; the second embodiment is to realize the connection between the metal bottom plate 1 and the metal mesh plate 3 by surrounding the side plate 5 in a conductive manner, as shown in fig. 5, and the patch antenna is shown in fig. 6, wherein the patch antenna radiator 6 is supported on the metal bottom plate 1 by an insulating support column 10 such as a support column made of plastic material, and the patch slot 9 and the feed probe 11 are arranged on the patch antenna radiator 6; in terms of high gain, the through holes on the second conductive surrounding side plate 5 can also generate radiation, so that the gain of the antenna is further improved; in the aspect of low side lobe, the radiation generated by the through holes on the second conductive surrounding side plate 5 can offset part of side lobe, so that the performance of the low side lobe is further improved.
In practical application, as shown in fig. 4 and 9, the gain of the antenna designed by the invention can reach 13-14dBic, which is much higher than that of a single patch antenna; as shown in fig. 4, 5, 9 and 10, the antenna of the invention radiates circularly polarized waves in a frequency band, and when the antenna is used for an RFID reader-writer, the circularly polarized waves can avoid orthogonal polarization between the reader-writer and a tag, and the tag antenna with various postures can be read. As shown in fig. 3, fig. 4, fig. 8 and fig. 9, the performance-frequency curve of the antenna designed by the invention is shown, the bandwidth of the antenna is very large, and the antenna can cover the domestic common RFID frequency band, in particular the second embodiment, the bandwidth is large enough, and the antenna can directly cover the common RFID frequency band in all places around the world; as shown in fig. 5 and 10, the directional diagram of the antenna designed by the invention is shown, the side lobe of the antenna is very low, the side lobe level is about-20 dB, and when the antenna is used in an RFID reader, the "read-through" can be improved, and the tag which is not in the direction of the antenna and is not intended to be read can be avoided.
In the specific practical application, the design scheme of the invention can be completely formed by cutting and bending a metal plate, does not need a PCB substrate, has low cost and simple structure, and compared with a common high-gain antenna such as an antenna array, the design antenna of the invention does not need a plurality of independent antennas and does not need a feed network, and has simpler structure and more convenient processing.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides a broadband circular polarization high gain low sidelobe antenna which characterized in that: comprises a metal bottom plate (1), a patch antenna (2) and a metal mesh plate (3); the patch antenna (2) is arranged on one surface of the metal base plate (1), and a feed point on the patch antenna (2) is connected with the reader-writer through a coaxial cable; the array distribution of metal mesh board (3) surface sets up each mesh, the girth of each mesh is all less than the twice of antenna wavelength respectively, the gesture on metal mesh board (3) with its being on a parallel with metal bottom plate (1) surface, be located one side that metal bottom plate (1) set up patch antenna (2), interval between metal bottom plate (1) and metal mesh board (3) is located with half of antenna wavelength, towards the default fluctuation range of decimal direction, patch antenna (2) are located between metal mesh board (3) and metal bottom plate (1), along the projection direction of perpendicular to metal bottom plate (1), the projection of patch antenna (2) is located metal mesh board (3) projection.
2. The wideband circularly polarized high gain low side lobe antenna of claim 1, wherein: the metal mesh plate structure further comprises at least one supporting piece (4), wherein the supporting piece (4) is a conductive supporting piece or a non-conductive supporting piece, two ends of each supporting piece (4) are respectively and fixedly connected with the metal mesh plate (3) and the metal bottom plate (1), and position setting between the metal mesh plate (3) and the metal bottom plate (1) is achieved.
3. A wideband circularly polarized high gain low side lobe antenna as defined in claim 2 wherein: based on support piece (4) is electrically conductive support piece, electrically conductive support piece is planar electrically conductive backup pad, the both ends are connected the edge of metal mesh board (3) respectively about each electrically conductive backup pad and corresponding position edge on metal bottom plate (1), connect with the same electrically conductive material connecting plate along this position edge of metal mesh board (3) between the side each other, this position edge of metal bottom plate (1), and the both sides limit is at the metal mesh board (3) edge that the butt joint limit faced respectively about the connecting plate, metal bottom plate (1) edge, constitute butt joint metal mesh board (3) edge a week by each electrically conductive backup pad, each connecting plate combination, and electrically conductive surrounding curb plate (5) of metal bottom plate (1) edge a week.
4. A wideband circularly polarized high gain low side lobe antenna as claimed in claim 3 wherein: at least one through hole penetrating through two sides of the conductive surrounding side plate (5) is arranged on the conductive surrounding side plate.
5. The wideband circularly polarized high gain low side lobe antenna of claim 4 wherein: the metal bottom plate (1) and the metal mesh plate (3) are polygonal with the same shape, each side on the metal bottom plate (1) corresponds to the corresponding side on the metal mesh plate (3) in position to form each group of opposite sides, at least two through holes are sequentially formed in the partial plate of each group of opposite sides on the conductive surrounding side plate (5) along the corresponding edge direction of the metal bottom plate (1), and the distance between the centers of the adjacent through holes is smaller than the wavelength of an antenna.
6. The wideband circularly polarized high gain low side lobe antenna of claim 4 wherein: the through holes on the conductive surrounding side plates (5) are polygonal, and the longest sides of the polygons are respectively parallel to the surface of the metal bottom plate (1).
7. The wideband circularly polarized high gain low side lobe antenna of claim 1, wherein: the patch antenna (2) is arranged on the surface of the metal base plate (1) and is positioned in a preset radius range by taking the center of the surface of the metal base plate (1) as the center of a circle.
8. The wideband circularly polarized high gain low side lobe antenna of claim 1, wherein: the patch antenna (2) is a circular polarization corner cut patch antenna with capacitive coupling feeding or a circular polarization corner cut patch antenna with direct feeding by a probe, and in the circular polarization corner cut patch antenna with direct feeding by the probe, a U-shaped groove is arranged on the surface of the antenna.
9. A wideband circularly polarized high gain low side lobe antenna as claimed in any one of claims 1 to 8 wherein: the metal bottom plate (1) and the metal mesh plate (3) are polygonal with the same shape and size, each side on the metal bottom plate (1) corresponds to the corresponding side on the metal mesh plate (3) in position, a connecting line between the center of the metal bottom plate (1) and the center of the metal mesh plate (3) is perpendicular to the surface of the metal bottom plate (1), and all meshes distributed on the surface array of the metal mesh plate (3) are polygonal meshes with the same shape and size.
10. The wideband circularly polarized high gain low side lobe antenna of claim 9, wherein: the metal bottom plate (1) and the metal mesh plate (3) are long polygons with the same size, polygonal meshes distributed on the surface of the metal mesh plate (3) in an array mode are rectangular meshes, the posture angles of the rectangular meshes on the surface of the metal mesh plate (3) are the same, and the length of the long sides of the rectangular meshes on the surface of the metal mesh plate (3) is smaller than half of the wavelength of an antenna.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410160587.6A CN117712685B (en) | 2024-02-05 | 2024-02-05 | Broadband circularly polarized high-gain low-sidelobe antenna |
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| CN202410160587.6A CN117712685B (en) | 2024-02-05 | 2024-02-05 | Broadband circularly polarized high-gain low-sidelobe antenna |
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| CN117712685A true CN117712685A (en) | 2024-03-15 |
| CN117712685B CN117712685B (en) | 2024-04-16 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060256016A1 (en) * | 2005-03-17 | 2006-11-16 | Ke-Li Wu | Integrated LTCC mm-wave planar array antenna with low loss feeding network |
| US20150155619A1 (en) * | 2012-06-22 | 2015-06-04 | Tagsys | Circularly Polarized Compact Helical Antenna |
| CN109755738A (en) * | 2019-03-08 | 2019-05-14 | 电连技术股份有限公司 | A kind of polarized grid antenna |
| CN114300838A (en) * | 2021-12-30 | 2022-04-08 | 西安电子科技大学 | Phased array dual-polarization broadband wide-angle scanning array antenna applied to neural network driving |
| WO2023092305A1 (en) * | 2021-11-23 | 2023-06-01 | 北京小米移动软件有限公司 | Antenna unit, array, beam scanning method, communication apparatus, and storage medium |
-
2024
- 2024-02-05 CN CN202410160587.6A patent/CN117712685B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060256016A1 (en) * | 2005-03-17 | 2006-11-16 | Ke-Li Wu | Integrated LTCC mm-wave planar array antenna with low loss feeding network |
| US20150155619A1 (en) * | 2012-06-22 | 2015-06-04 | Tagsys | Circularly Polarized Compact Helical Antenna |
| CN109755738A (en) * | 2019-03-08 | 2019-05-14 | 电连技术股份有限公司 | A kind of polarized grid antenna |
| WO2023092305A1 (en) * | 2021-11-23 | 2023-06-01 | 北京小米移动软件有限公司 | Antenna unit, array, beam scanning method, communication apparatus, and storage medium |
| CN114300838A (en) * | 2021-12-30 | 2022-04-08 | 西安电子科技大学 | Phased array dual-polarization broadband wide-angle scanning array antenna applied to neural network driving |
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| CN117712685B (en) | 2024-04-16 |
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