CN114614249A - Broadband circularly polarized magnetoelectric dipole transmission array antenna - Google Patents
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- H—ELECTRICITY
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- 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
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- 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
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- 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
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- H—ELECTRICITY
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- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
- H01Q15/242—Polarisation converters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- 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
- H01Q21/062—Two dimensional planar arrays using dipole aerials
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- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
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Abstract
The invention discloses a broadband circular polarization magnetoelectric dipole transmission array antenna, which is an N multiplied by N array formed by a plurality of transmission array antenna basic units, wherein N is more than or equal to 2, the basic units comprise a receiving antenna (1) and a transmitting antenna (2), a connecting line is added on one pair of diagonal patches of the magnetoelectric dipole transmission unit, thus an asymmetric diagonal interference is introduced, the resonance of the magnetoelectric dipole along the orthogonal direction is properly tuned, a stable 180-degree phase difference is generated in a broadband, the conversion from left-hand circular polarization incident wave to right-hand circular polarization transmitting wave is realized, the broadband circular polarization magnetoelectric dipole transmission array antenna has wider 3-dB gain and axial ratio overlapping bandwidth (32%), the in-band gain can reach 25.5dBic at most, the caliber efficiency can reach 49% at most, and simultaneously, the broadband circular polarization diagram and better normal radiation performance are provided, the method can be widely applied to broadband satellite communication.
Description
Technical Field
The invention relates to the technical field of antennas of wireless communication systems, in particular to a broadband circularly polarized magnetoelectric dipole transmission array antenna.
Background
The transmission array antenna is a high-gain antenna with the advantages of plane wave front, no feed source shielding, easiness in processing and the like, and is widely applied to the communication fields of point-to-point remote communication, satellite communication, radar systems, remote sensing detection and the like. Meanwhile, circularly polarized antennas are essential in many of these applications due to their advantages of resistance to multipath fading, faraday rotation effect, and polarization mismatch loss, as compared to linearly polarized antennas. Meanwhile, the transmission array antenna has the advantages of being planar, light in weight, easy to manufacture and the like, and is a better choice for realizing directional circularly polarized wave beams.
At present, the units of the transmission array antenna mostly adopt the form of a microstrip antenna or a periodic super-surface antenna, so that the gain of the finally formed transmission array is limited by the narrower working bandwidth of the units, the 3-dB gain and the axial ratio overlapping bandwidth are generally less than 20%, and the space for improvement is still provided. The scheme introduces a new antenna unit form, adopts the magnetoelectric dipole antenna as an array unit, thereby effectively expanding the bandwidth of the transmission array antenna, and ensures the matching of the antenna in a working frequency band by utilizing an L-shaped probe feed structure.
The transmission array antenna provided by the invention works in an X wave band, has a wider working bandwidth, realizes conversion from left-handed circularly polarized incident waves to right-handed circularly polarized transmitted waves, has a stable directional diagram and better normal radiation performance, and can be widely applied to broadband satellite communication.
Disclosure of Invention
The technical problem is as follows: the invention aims to provide a broadband circularly polarized magnetoelectric dipole transmission array antenna which is used for solving the technical problems mentioned in the background technology. The antenna unit of the antenna utilizes a magnetoelectric dipole antenna structure formed by the metal patch and the metallized through hole, the working bandwidth of the antenna is enlarged, and the L-shaped probe feed structure is used for ensuring that the antenna has better matching in the working frequency band. A connecting line is added on one pair of diagonal patches of the magnetoelectric dipole transmission unit, so that asymmetric diagonal interference is introduced, resonance of the magnetoelectric dipole along the orthogonal direction is properly tuned, stable 180-degree phase difference is generated in a wide frequency band, conversion from left-hand circularly polarized incident waves to right-hand circularly polarized transmitted waves is achieved, the wide 3-dB gain and axial ratio overlapping bandwidth (32%) are provided, in-band gain can reach 25.5dBic at most, and caliber efficiency can reach 49% at most.
The technical scheme is as follows: the invention relates to a broadband circular polarization magnetoelectric dipole transmission array antenna which is an N multiplied by N array formed by a plurality of transmission array antenna basic units, wherein N is more than or equal to 2, the basic units comprise receiving antennas and transmitting antennas,
the structure of the receiving antenna sequentially comprises from bottom to top: the receiving antenna comprises a bottom metal layer, a first dielectric layer, a second metal layer, a first bonding layer, a second dielectric layer and a receiving end metal floor, wherein the receiving end metal floor comprises an electric dipole arranged on the bottom metal layer and a magnetic dipole arranged inside the receiving antenna;
the structure of the transmitting antenna sequentially comprises from top to bottom: the antenna comprises a top metal layer, a third dielectric layer, a fourth metal layer, a second bonding layer, a fourth dielectric layer and a transmitting end metal floor, wherein the transmitting end metal floor comprises an electric dipole arranged on the top metal layer and a magnetic dipole arranged in the transmitting antenna;
the receiving antenna and the transmitting antenna are connected through a third adhesive layer and are vertically symmetrical relative to the third adhesive layer;
and the receiving end feed patch, namely the second metal layer, and the transmitting end feed patch, namely the fourth metal layer of the L-shaped feed structure are respectively connected with the feed probe.
The L-shaped feed structures in the receiving antenna and the transmitting antenna comprise a receiving end feed patch printed on the second metal layer, a transmitting end feed patch printed on the fourth metal layer, a receiving end feed pad printed on the bottom metal layer and a transmitting end feed pad printed on the top metal layer, wherein the receiving end feed patch and the transmitting end feed patch are respectively connected with a metalized through hole, and the metalized through hole penetrates through the first dielectric layer, the first bonding layer, the second dielectric layer, the receiving end metal floor, the third dielectric layer, the second bonding layer, the fourth dielectric layer and the transmitting end metal floor.
The circular-arc-shaped metal patch and the metalized through hole in the transmitting antenna of the receiving antenna form a structure of a broadband magnetoelectric dipole antenna, wherein a first metalized through hole is formed in the first circular-arc-shaped patch, a second metalized through hole is formed in the second circular-arc-shaped patch, a third metalized through hole is formed in the third circular-arc-shaped patch, a fourth metalized through hole is formed in the fourth circular-arc-shaped patch, and a connecting line is connected between the second circular-arc-shaped patch and the fourth circular-arc-shaped patch.
The electric dipole in the receiving antenna and the electric dipole in the transmitting antenna have the same structure and are in mirror symmetry in position, wherein the electric dipole of the receiving antenna comprises a top metal layer, namely a first arc-shaped patch, a second arc-shaped patch, a third arc-shaped patch and a fourth arc-shaped patch which are sequentially arranged around the center in a rotating mode; a connecting line is connected between the second circular arc patch and the fourth circular arc patch, the sizes of the four circular arc patches are different, and the distances among the four patches are different, so that the phase difference required by circular polarization is realized.
The metal patches which are positioned on the bottom metal layer and the top metal layer and are in mirror symmetry with respect to the third bonding layer are connected through a metalized through hole, and the metalized through hole penetrates through the whole antenna from the top metal layer to the bottom metal layer; a number of said metallized through holes surrounding the L-shaped feed structure constitute the magnetic dipole part of the antenna.
The sum of the thicknesses of the first dielectric layer, the first bonding layer and the second dielectric layer in the receiving antenna is one-quarter of the resonant wavelength of the waveguide; the sum of the thicknesses of the third dielectric layer, the second bonding layer and the fourth dielectric layer in the corresponding transmitting antenna is one quarter of the waveguide resonant wavelength.
Has the advantages that: the invention discloses a broadband circularly polarized transmission antenna based on a magnetoelectric dipole structure and an array thereof, which can achieve a wider 3-dB gain and an AR (augmented reality) overlapping bandwidth (32%), an in-band gain can be up to 25.5dBic, a caliber efficiency can be up to 49%, and the broadband circularly polarized transmission antenna simultaneously has a stable directional diagram and good normal radiation performance, realizes the conversion from left-hand circularly polarized incident waves to right-hand circularly polarized transmitted waves, has a bandwidth far exceeding that of the conventional circularly polarized transmission array antenna excited by a circularly polarized feed source and has a relatively lower section. The antenna provided by the invention is based on a standard PCB process, is simple to process, has low cost, is beneficial to expansion into an array and mass production, and can be widely applied to broadband satellite communication.
Drawings
Fig. 1 is a schematic structural diagram of a broadband circularly polarized magnetoelectric dipole transmission array antenna unit provided in embodiment 1;
fig. 2 is a structural side view of a broadband circularly polarized magnetoelectric dipole transmission array antenna unit provided in embodiment 1;
fig. 3 is a structural plan view of a broadband circularly polarized magnetoelectric dipole transmission array antenna unit provided in embodiment 1;
fig. 4 is a schematic diagram of a feeding structure of a broadband circularly polarized magnetoelectric dipole transmissive array antenna unit provided in embodiment 1;
fig. 5 is a simulation result curve of the main polarization transmission phase of the broadband circularly polarized magnetoelectric dipole transmission array antenna unit provided in embodiment 1 varying with the rotation angle under different frequencies;
fig. 6 is a simulation result curve of transmission amplitudes of main polarization and cross polarization components of the broadband circularly polarized magnetoelectric dipole transmission array antenna unit provided in embodiment 1 at different rotation angles;
fig. 7 is a simulation result curve of transmission amplitudes of main polarization components and cross polarization components of the broadband circularly polarized magnetoelectric dipole transmission array antenna unit provided in embodiment 1 at different rotation angles and incidence angles;
fig. 8 is a schematic phase distribution diagram of a phase compensation scheme of the broadband circularly polarized magnetoelectric dipole transmission array antenna provided in embodiment 2;
fig. 9 is a schematic view of a simulation model of the broadband circularly polarized magnetoelectric dipole transmission array antenna provided in embodiment 2;
fig. 10 is a graph of axial ratio results of a simulation of the broadband circularly polarized magnetoelectric dipole transmission array antenna provided in embodiment 2;
fig. 11 is a graph of simulated gain and aperture efficiency curves of the broadband circularly polarized magnetoelectric dipole transmission array antenna provided in embodiment 2;
fig. 12 is a simulated radiation pattern of the broadband circularly polarized magnetoelectric dipole transmission array antenna provided in embodiment 2 at 11 GHz;
fig. 13 is a simulated radiation pattern of the broadband circularly polarized magnetoelectric dipole transmission array antenna provided in embodiment 2 at 13 GHz;
in the drawings:
1-receiving antenna, 2-transmitting antenna, 3-bottom metal layer, 4-first dielectric layer, 5-second metal layer, 6-first adhesive layer, 7-second dielectric layer, 8-receiving end metal floor, 9-top metal layer, 10-third dielectric layer, 11-fourth metal layer, 12-second adhesive layer, 13-fourth dielectric layer, 14-transmitting end metal floor, 15-third adhesive layer, 16-metalized through hole, 17-transmitting end bonding pad, 18-receiving end bonding pad and 19-feed probe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 to 4, this embodiment provides a broadband circularly polarized magnetoelectric dipole transmission array antenna unit, where each antenna unit includes, from bottom to top, a receiving antenna 1, a transmitting antenna 2, a bottom metal layer 3, a first dielectric layer 4, a second metal layer 5, a first adhesive layer 6, a second dielectric layer 7, a receiving end metal floor 8, a top metal layer 9, a third dielectric layer 10, a fourth metal layer 11, a second adhesive layer 12, a fourth dielectric layer 13, a transmitting end metal floor 14, a third adhesive layer 15, a metallized through hole 16, a transmitting end pad 17, a receiving end pad 18, and a feed probe 19, which are sequentially disposed.
The bottom metal layer 3, the first dielectric layer 4, the second metal layer 5, the first adhesive layer 6, the second dielectric layer 7, the receiving end metal floor 8 and the metalized through hole 16 form a receiving antenna 1 of the lens antenna unit.
The top metal layer 9, the third dielectric layer 10, the fourth metal layer 11, the second adhesive layer 12, the fourth dielectric layer 13, the transmitting end metal floor 14 and the metalized through hole 16 form the transmitting antenna 2 of the lens antenna unit.
The receiving antenna 1 and the transmitting antenna 2 are connected by a third adhesive layer 15, and are mirror-symmetrical up and down with respect to the third adhesive layer 15, and in the present embodiment, the receiving antenna 1 and the transmitting antenna 2 have the same structure.
It should be noted that, in this embodiment, the L-shaped feeding structure located inside the receiving antenna 1 and the transmitting antenna 2 includes a receiving end feeding patch 5 printed on the second metal layer, a transmitting end feeding patch 11 printed on the fourth metal layer, a receiving end feeding pad 17 printed on the bottom metal layer, and a transmitting end feeding pad 18 printed on the top metal layer, and a metalized through hole 19 penetrating through the first dielectric layer 4, the first adhesive layer 6, the second dielectric layer 7, the receiving end metal floor 8, the third dielectric layer 10, the second adhesive layer 12, the fourth dielectric layer 13, and the transmitting end metal floor 14 is further connected between the receiving end feeding patch 5 and the transmitting end feeding patch 11.
Specifically, in the present embodiment, the circular-arc-shaped metal patch 9 and the metallized through hole 16 in the receiving antenna 1 or the transmitting antenna 2 constitute a structure of a broadband magnetoelectric dipole antenna.
Specifically, in this embodiment, the electric dipole in the receiving antenna 1 and the electric dipole in the transmitting antenna 2 have the same structure and are mirror-symmetrical in position, where the electric dipole of the receiving antenna 1 includes a first circular arc patch 9-1, a second circular arc patch 9-2, a third circular arc patch 9-3, and a fourth circular arc patch 9-4;
specifically, in the embodiment, a connecting line 9-5 is connected between the second circular arc patch 9-2 and the fourth circular arc patch 9-4, the sizes of the four circular arc patches are different, and the distances between the four patches are different, so that the phase difference required by circular polarization and a better broadband matching effect are realized.
More specifically, in this embodiment, circular arc patches are used instead of square patches to reduce the mutual coupling effect between adjacent elements, thereby maintaining the stable performance of the antenna elements when rotated for phase modulation under periodic boundary conditions.
Specifically, in the present embodiment, the metal patches on the bottom metal layer 3 and the top metal layer 9 that are mirror-symmetrical with respect to the third adhesion layer 15 are connected by a metalized via, and the metalized via 16 penetrates the entire antenna from the top metal layer to the bottom metal layer. The plurality of metalized through holes surrounding the feed structure form a magnetic dipole part of the antenna, and the sizes and positions of the metalized through holes are different, so that phase difference required by circular polarization is realized, and a better broadband matching effect is achieved.
Specifically, in the present embodiment, the sum of the thicknesses of the first dielectric layer 4, the first adhesive layer 6, and the second dielectric layer 7 in the receiving antenna 1 is about a quarter of the waveguide resonant wavelength; the sum of the thicknesses of the third dielectric layer 10, the second adhesive layer 12, and the fourth dielectric layer 13 in the corresponding transmitting antenna 2 is about a quarter of the waveguide resonance wavelength.
More specifically, in this embodiment, the L-shaped feeding structure is used to excite the magnetoelectric dipole antenna, so as to achieve a better broadband matching effect.
More specifically, in this embodiment, the required first dielectric layer 4, second dielectric layer 7, third dielectric layer 10, and fourth dielectric layer 13 may be dielectric substrates (dielectric constant is 3.66, loss tangent value is 0.0037) made of Rogers 4350B, the thicknesses of the first dielectric layer 4 and third dielectric layer 10 are 0.762mm, and the thicknesses of the second dielectric layer 7 and fourth dielectric layer 13 are 1.524 mm; the first adhesive layer 6, the second adhesive layer 12 and the third adhesive layer 15 can be formed by bonding two adhesive sheets Rogers 4450F (dielectric constant of 3.52, loss tangent of 0.004) having a thickness of 0.101 mm. The interval between adjacent antenna units is 11.5mm, which is about 0.45 times of air wavelength corresponding to the central resonance frequency (12GHz), and the generation of side lobes can be avoided.
Fig. 5 shows a simulation result curve of the main polarization transmission phase of the broadband circularly polarized magnetoelectric dipole transmission array antenna unit changing with the rotation angle under different frequencies, as shown in the figure, the main polarization transmission phase changes with the rotation angle in proportion, and the phase curves between different frequencies are also parallel to each other, which shows that the unit has the capability of broadband phase adjustment.
Fig. 6 shows a simulation result curve of transmission amplitudes of main polarization and cross polarization components of the broadband circularly polarized magnetoelectric dipole transmission array antenna unit at different rotation angles, as shown in the figure, the main polarization amplitude is basically kept unchanged at three typical unit rotation angles, the transmission loss value is basically smaller than-1 dB, and the cross polarization components are all below-15 dB. It can be seen that the cell rotation mainly causes the change of the main polarization transmission phase, but has little influence on the main polarization amplitude and axial ratio of the transmitted wave.
Fig. 7 shows a simulation result curve of transmission amplitudes of main polarization components and cross polarization components of the broadband circularly polarized magnetoelectric dipole transmission array antenna unit under different rotation angles and incidence angles, and the influence of oblique incidence on the unit performance is researched. As shown, the performance of the cell was verified at 0 ° and 45 ° rotation at different incident angles. For the oblique incidence of plane waves with incidence angles as high as 30 degrees, good cross polarization suppression effect is well preserved, and meanwhile, the loss of the transmission amplitude of the main polarization is basically less than-1 dB. Therefore, the transmission unit can achieve high transmission efficiency and circular polarization performance.
Example 2
The antenna units in embodiment 1 are arrayed according to the array phase compensation scheme provided in fig. 8, and as shown in fig. 9, a simulation model of the broadband circularly polarized magnetoelectric dipole transmission array antenna is schematically illustrated, the array size is 16 × 16, a circularly polarized horn is used as a feed source and is placed at the receiving side of the antenna, and the horn provides a gain of about 10dBic in the operating frequency band. The focal length to diameter ratio was about 0.6 to maintain-10 dB of edge illumination.
Fig. 10 shows an axial ratio result of simulation of the broadband circular polarization magnetoelectric dipole transmission array antenna provided in this embodiment 2, and it can be seen that the axial ratio is less than 3dB and substantially below 1.5dB in the whole operating frequency band, and the antenna has a high circular polarization transmission purity.
Fig. 11 shows a graph of a simulation result of a gain curve and a caliber efficiency curve of the broadband circularly polarized magnetoelectric dipole transmission array antenna provided in embodiment 2, as shown in the figure, a 3-dB gain bandwidth reaches 32% (10-13.8GHz), an in-band gain can reach 25.5dBic at most, a caliber efficiency can reach 49% at most, and the broadband circularly polarized magnetoelectric dipole transmission array antenna has a wider circularly polarized bandwidth.
Fig. 12 shows simulated radiation patterns of the E-plane and the H-plane of the broadband circularly polarized magnetoelectric dipole transmission array antenna provided in embodiment 2 at 11GHz, where both cross polarization components are lower than-20 dB, and the broadband circularly polarized magnetoelectric dipole transmission array antenna has a stable pattern and good normal radiation performance.
Fig. 13 shows simulated radiation patterns of the E-plane and the H-plane of the broadband circularly polarized magnetoelectric dipole transmission array antenna provided in embodiment 2 at 13GHz, where both cross polarization components are lower than-20 dB, and the broadband circularly polarized magnetoelectric dipole transmission array antenna has a stable pattern and good normal radiation performance.
The invention is not described in detail, but is well known to those skilled in the art.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (6)
1. A broadband circular polarization magnetoelectric dipole transmission array antenna is characterized in that: the transmission array antenna is an N multiplied by N array formed by a plurality of transmission array antenna basic units, N is more than or equal to 2, the basic units comprise a receiving antenna (1) and a transmitting antenna (2),
the structure of the receiving antenna (1) is as follows from bottom to top: the antenna comprises a bottom metal layer (3), a first dielectric layer (4), a second metal layer (5), a first bonding layer (6), a second dielectric layer (7) and a receiving end metal floor (8), wherein the receiving end metal floor comprises an electric dipole arranged on the bottom metal layer (3) and a magnetic dipole (16) arranged inside the receiving antenna (1);
the structure of the transmitting antenna (2) is as follows from top to bottom: the antenna comprises a top metal layer (9), a third dielectric layer (10), a fourth metal layer (11), a second bonding layer (12), a fourth dielectric layer (13) and a transmitting end metal floor (14), wherein the top metal layer comprises an electric dipole arranged on the top metal layer (9) and a magnetic dipole (16) arranged inside the transmitting antenna (1);
the receiving antenna (1) and the transmitting antenna (2) are connected through a third bonding layer (15), and are vertically symmetrical about the third bonding layer (15);
the receiving antenna (1) and the transmitting antenna (2) are both internally provided with L-shaped feed structures, and receiving end feed patches, namely the second metal layer (5), and transmitting end feed patches, namely the fourth metal layer (11) of the L-shaped feed structures are respectively connected with the feed probes (19).
2. The broadband circularly polarized magnetoelectric dipole transmission array antenna according to claim 1, characterized in that: the L-shaped feed structures in the receiving antenna (1) and the transmitting antenna (2) comprise a receiving end feed patch printed on the second metal layer (5), a transmitting end feed patch printed on the fourth metal layer (11), a receiving end feed pad (17) printed on the bottom metal layer (3) and a transmitting end feed pad (18) printed on the top metal layer (9), the receiving end feed patch and the transmitting end feed patch are respectively connected with a metalized through hole (19), and the metalized through hole (19) penetrates through the first dielectric layer (4), the first bonding layer (6), the second dielectric layer (7), the receiving end metal floor (8), the third dielectric layer (10), the second bonding layer (12), the fourth dielectric layer (13) and the transmitting end metal floor (14).
3. The broadband circularly polarized magnetoelectric dipole transmission array antenna according to claim 1, characterized in that: the structure of the broadband magnetoelectric dipole antenna is formed by the arc-shaped metal patches (9) and the metalized through holes (16) in the receiving antenna (1) or the transmitting antenna (2), wherein the first arc-shaped patch (9-1) is provided with a first metalized through hole (16-1), the second arc-shaped patch (9-2) is provided with a second metalized through hole (16-2), the third arc-shaped patch (9-3) is provided with a third metalized through hole (16-3), the fourth arc-shaped patch (9-4) is provided with a fourth metalized through hole (16-4), and a connecting wire (9-5) is connected between the second arc-shaped patch (9-2) and the fourth arc-shaped patch (9-4).
4. The broadband circularly polarized magnetoelectric dipole transmission array antenna according to claim 1, characterized in that: the electric dipole in the receiving antenna (1) and the electric dipole in the transmitting antenna (2) have the same structure and are in position mirror symmetry, wherein the electric dipole of the receiving antenna (1) comprises a top metal layer (9), namely a first circular arc patch (9-1), a second circular arc patch (9-2), a third circular arc patch (9-3) and a fourth circular arc patch (9-4) which are sequentially arranged around the center in a rotating mode; a connecting line (9-5) is connected between the second circular arc patch (9-2) and the fourth circular arc patch (9-4), the sizes of the four circular arc patches are different, and the distances among the four circular arc patches are different, so that the phase difference required by circular polarization is realized.
5. The broadband circularly polarized magnetoelectric dipole transmission array antenna according to claim 1, characterized in that: the metal patches which are positioned on the bottom metal layer (3) and the top metal layer (9) and are in mirror symmetry with respect to the third bonding layer (15) are connected through a metalized through hole (16), and the metalized through hole (16) penetrates through the whole antenna from the top metal layer to the bottom metal layer; a number of said metallized through holes surrounding the L-shaped feed structure constitute the magnetic dipole part of the antenna.
6. The broadband circularly polarized magnetoelectric dipole transmission array antenna according to claim 1, characterized in that: the sum of the thicknesses of the first dielectric layer (4), the first bonding layer (6) and the second dielectric layer (7) in the receiving antenna (1) is a quarter waveguide resonant wavelength; the sum of the thicknesses of the third dielectric layer (10), the second bonding layer (12) and the fourth dielectric layer (13) in the corresponding transmitting antenna (2) is a quarter waveguide resonant wavelength.
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| CN117691361A (en) * | 2023-12-20 | 2024-03-12 | 南通大学 | Broadband low-profile circularly polarized reflection array antenna based on adjustable phase polarization torsion surface |
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|---|---|---|---|---|
| US20210151890A1 (en) * | 2019-03-01 | 2021-05-20 | South China University Of Technology | A low-profile dual-polarization filtering magneto-electric dipole antenna |
| CN113937482A (en) * | 2020-06-29 | 2022-01-14 | 南京锐码毫米波太赫兹技术研究院有限公司 | Antenna and mobile terminal |
| CN113851861A (en) * | 2021-10-13 | 2021-12-28 | 东南大学 | Magnetoelectric dipole broadband polarization torsion lens antenna and phase compensation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117691361A (en) * | 2023-12-20 | 2024-03-12 | 南通大学 | Broadband low-profile circularly polarized reflection array antenna based on adjustable phase polarization torsion surface |
| CN117691361B (en) * | 2023-12-20 | 2024-06-11 | 南通大学 | Broadband low-profile circularly polarized reflection array antenna based on adjustable phase polarization torsion surface |
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