CN110571523B - Three-wire polarized antenna with large frequency ratio - Google Patents
Three-wire polarized antenna with large frequency ratio Download PDFInfo
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- CN110571523B CN110571523B CN201910842352.4A CN201910842352A CN110571523B CN 110571523 B CN110571523 B CN 110571523B CN 201910842352 A CN201910842352 A CN 201910842352A CN 110571523 B CN110571523 B CN 110571523B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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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
- H01—ELECTRIC ELEMENTS
- 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
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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
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
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- 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
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
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Abstract
The invention belongs to the technical field of 5G communication, and relates to a high-frequency-ratio three-wire polarized antenna which comprises a first patch antenna and a second patch antenna which are stacked; the magnetoelectric dipole antenna is arranged on one side, away from the first patch antenna, of the second patch antenna; the first patch antenna, the second patch antenna and the magnetoelectric dipole antenna are arranged on the metal floor, and the first patch antenna, the second patch antenna and the magnetoelectric dipole antenna are sequentially arranged in the direction away from the metal floor; the first patch antenna, the second patch antenna and the magnetoelectric dipole antenna are respectively connected with a feed unit. The antenna can work in microwave and millimeter wave frequency bands simultaneously, provides a larger working frequency ratio, and can provide linearly polarized waves in the same three directions to realize three-line polarization.
Description
Technical Field
The invention belongs to the technical field of 5G communication, and relates to a high-frequency-ratio three-wire polarized antenna.
Background
The 5G (fifth generation) mobile communication has an extremely high rate, an extremely large capacity, and an extremely low delay time compared to the 4G (fourth generation) mobile communication. With the rapid development of the 5G mobile communication technology, the number of users and the data throughput capacity of the mobile communication technology are increased on a large scale; therefore, as a core device for transmitting and receiving electromagnetic waves, an antenna, is required to meet the above-mentioned operational requirements; the existing 5G antenna can only meet the operation of a single frequency and can not meet the operation requirement of G5 communication.
Disclosure of Invention
The invention aims to provide a three-wire polarized antenna with a large frequency ratio, which can work in microwave and millimeter wave simultaneously and solve the problem of small frequency ratio of the antenna, aiming at the defects of the related art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a large frequency ratio triplex polarized antenna comprising:
the first patch antenna and the second patch antenna are stacked;
the magnetoelectric dipole antenna is arranged on one side, away from the first patch antenna, of the second patch antenna; and
the first patch antenna, the second patch antenna and the magnetoelectric dipole antenna are arranged on the metal floor, and the first patch antenna, the second patch antenna and the magnetoelectric dipole antenna are sequentially arranged in the direction away from the metal floor;
the first patch antenna, the second patch antenna and the magnetoelectric dipole antenna are respectively connected with a feed unit.
Further, the first patch antenna is connected to a first feeding unit, and the first feeding unit includes:
and one end of the first feed probe is connected with the first patch antenna, and the other end of the first feed probe is connected with the first feed port.
Furthermore, a third metal column and a fourth metal column are connected between the first patch antenna and the metal floor, and the third metal column is hollow.
Further, the second patch antenna is connected to a second feeding unit, and the second feeding unit includes:
an L-shaped feeding unit, one end of which is coupled with the second patch antenna for feeding, the other end of which is connected with one end of the second feeding probe,
and the other end of the second feeding probe is connected with a second feeding port.
Furthermore, the L-shaped feed unit comprises an L-shaped transmission line and an L-shaped probe which are connected, one end of the L-shaped transmission line, which is far away from the L-shaped probe, is connected with the second feed probe, and one end of the L-shaped probe, which is far away from the L-shaped transmission line, is used for coupling feed of the second patch antenna.
Further, the magnetoelectric dipole antenna is connected to a third feeding unit, and the third feeding unit includes:
one end of the first rectangular waveguide is connected with the magnetoelectric dipole antenna, the other end of the first rectangular waveguide is connected with the second rectangular waveguide, and one end, far away from the first rectangular waveguide, of the second rectangular waveguide is connected with the third feed port.
Further, the magneto-electric dipole antenna includes:
an antenna assembly for transceiving signals; and
and the feeding component is used for feeding the antenna component, one end of the feeding component is connected with the antenna component, and the other end of the feeding component is connected with the feeding unit.
Further, the feeding assembly includes:
the first dielectric substrate is arranged between the antenna component and the second patch antenna;
the first metallization layer is arranged on one side, close to the second patch antenna, of the first dielectric substrate, and a rectangular groove is etched in the position, corresponding to the feed unit, of the first metallization layer;
the second metallization layer is arranged on one side, close to the antenna assembly, of the first dielectric substrate, a gap is etched in the second metallization layer, and the gap is used for feeding the antenna assembly;
and second metal columns are periodically arranged in the first dielectric substrate and are connected between the first metalized layer and the second metalized layer.
Further, the antenna assembly comprises a third metallization layer and a second dielectric substrate, the third metallization layer is arranged on one side, away from the feed assembly, of the second dielectric substrate, and a first metal column connected with the third metallization layer is arranged in the second dielectric substrate.
Furthermore, a reflecting plate is arranged around the metal floor.
The invention has the beneficial effects that:
the first patch antenna, the second patch antenna and the magnetoelectric dipole antenna are respectively fed by different feeding units, and can respectively generate linearly polarized waves in the same direction to realize three-line polarization;
the first patch antenna can work in a 2.4GHz frequency band, and the frequency range is 2.38-2.52 GHz; the second patch antenna can work in a frequency band of 5.8GHz, and the frequency coverage range is 4.7-5.95 GHz; the magnetoelectric dipole antenna works in a 60-GHz frequency band, and the frequency coverage range is 55-69 GHz; therefore, the large-frequency-ratio three-wire polarized antenna provided by the invention has a larger frequency ratio, can work in a microwave frequency band and a millimeter wave frequency band, has wide signal coverage, and provides a higher data transmission rate and a larger network capacity.
Drawings
FIG. 1 is a schematic diagram of the external structure of a high frequency ratio three-wire polarized antenna;
FIG. 2 is a schematic diagram of the internal structure of a high frequency ratio three-wire polarized antenna;
FIG. 3 is a schematic diagram of a side view of a triple-polarized antenna with a large frequency ratio in the state without a reflector plate;
FIG. 4 is a schematic diagram of a top view of a triple-polarized antenna with a large frequency ratio in the state without a reflector;
FIG. 5 is a schematic sectional view taken along the line A-A in FIG. 4;
FIG. 6 is a schematic cross-sectional view taken along line B-B of FIG. 4;
fig. 7 is a schematic structural diagram of an L-shaped feed unit;
fig. 8 is a schematic diagram of a top view structure of a magnetoelectric dipole antenna;
FIG. 9 is a schematic cross-sectional view taken along line C-C of FIG. 8;
fig. 10 is a schematic bottom view of a second patch antenna;
fig. 11 is a schematic structural diagram of a metallized patch of a magnetoelectric dipole antenna;
FIG. 12 is a schematic structural diagram of a second metallization layer;
FIG. 13 is a schematic structural diagram of a first metallization layer;
FIG. 14 is a first dimension labeling diagram of a large frequency ratio three-wire polarized antenna in an experiment;
FIG. 15 is a schematic diagram of a dimension labeling of a large frequency ratio three-wire polarized antenna in an experiment;
FIG. 16 is a graph showing the results of simulation and testing of the reflection coefficient of a large frequency ratio triple-polarized antenna in an experiment;
FIG. 17 is a graph of the results of the simulated and tested isolation between microwave and millimeter wave ports for a large frequency ratio triple-polarized antenna in an experiment;
FIG. 18 is a gain diagram for simulation and testing of a large frequency ratio triple-polarized antenna during an experiment;
figures 19 and 20 are simulated and tested patterns of a large frequency ratio triplex polarized antenna operating at 2.45GHz during the experiment;
FIGS. 21 and 22 are simulated and tested patterns of a large frequency ratio triplex polarized antenna operating at 5.2GHz during the experiment;
figures 23 and 24 are simulated test patterns of a large frequency ratio three-wire polarized antenna operating at 60GHz during the experiment.
The labels in the figure are: 1-metal floor, 2-reflector plate, 3-first patch antenna, 4-L feed unit, 401-L transmission line, 402-L probe, 5-second patch antenna, 501-first through hole, 6-first dielectric substrate, 7-second dielectric substrate, 8-first metallization layer, 801-rectangular groove, 9-second metallization layer, 901-gap, 10-third metallization layer, 11-first metal column, 12-second metal column, 13-first rectangular waveguide, 14-third metal column, 15-fourth metal column, 16-first feed probe, 17-first feed port, 18-outer conductor, 19-second feed probe, 20-second feed port, 21-second rectangular waveguide, 22-third feeding port, 23-screw hole, 24-shell.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to solve network congestion and support more terminal connections, the 5G extension uses millimeter wave frequencies, which means that 5G terminal devices are capable of providing wide signal coverage with frequencies below 6 GHz and employ millimeter wave (above 24 GHz) frequencies to provide high data transmission rates and network capacity; therefore, as a core device for transmitting and receiving electromagnetic waves, an antenna is required to be capable of simultaneously operating in the microwave (6 GHz) and millimeter wave (above 24 GHz) frequency bands, i.e., to have a large frequency ratio characteristic to meet the above requirements.
Referring to fig. 1 to 13, the present invention provides a high frequency ratio three-wire polarized antenna, including: a first patch antenna 3 and a second patch antenna 5 placed in a stack; the magnetoelectric dipole antenna is arranged on one side, away from the first patch antenna 3, of the second patch antenna 5; the first patch antenna 3, the second patch antenna 5 and the magnetoelectric dipole antenna are arranged on the metal floor 1, and the first patch antenna 3, the second patch antenna 5 and the magnetoelectric dipole antenna are sequentially arranged in a direction away from the metal floor 1; the first patch antenna 3, the second patch antenna 5 and the magnetoelectric dipole antenna are respectively connected with a feed unit. In the embodiment, the first patch antenna 3, the second patch antenna 5 and the magnetoelectric dipole antenna respectively work in different frequency bands, so that the large-frequency-ratio three-wire polarized antenna can work in different frequency bands and has a large frequency ratio.
Referring to fig. 2 to 4, in an embodiment, the metal floor 1 is a square metal floor, and a reflection plate 2 is disposed around the metal floor to enhance the radiation intensity of the large frequency ratio triple-polarized antenna and enhance the intensity of the transmission signal; first patch antenna 3, second patch antenna 5 and magnetoelectric dipole antenna also are the square respectively, just first patch antenna 3, second patch antenna 5 and magnetoelectric dipole antenna and metal floor 1 coaxial setting, and the central line of first patch antenna 3, second patch antenna 5, the central line of magnetoelectric dipole antenna correspond the setting with the center on metal floor 1 respectively promptly, on same axis.
In the embodiment, the first patch antenna 3 is installed on one side of the metal floor 1, where the reflection plate 2 is arranged; four corners of the first patch antenna 3 are respectively fixed with the metal floor 1 through plastic screws; the second patch antenna 5 is arranged on one side, far away from the metal floor 1, of the first patch antenna 3, the second patch antenna 5 and the first patch antenna 3 are arranged at intervals, and an air layer is reserved between the second patch antenna 5 and the first patch antenna 3; the magnetoelectric dipole antenna is arranged on one side, away from the first patch antenna 3, of the second patch antenna 5 and is arranged close to the second patch antenna 5; four peripheral angles of magnetoelectric dipole antenna and four peripheral angles of second paster antenna 5 are equipped with screw hole 23 respectively to accessible plastic screw is fixed between with magnetoelectric dipole antenna and second paster antenna 5. In the embodiment, a first rectangular waveguide 13 is fixedly installed in the center of the metal floor 1, and one end, far away from the metal floor 1, of the first rectangular waveguide 13 sequentially passes through the center of the first patch antenna 3 and the center of the second patch antenna 5, so that the first patch antenna 3 and the second patch antenna 5 are fixed; one end of the first rectangular waveguide 13 is stopped at the contact surface of the second patch antenna 5 and the magnetoelectric dipole antenna. In an embodiment, the first rectangular waveguide 13 is open at both ends.
Referring to fig. 6, in the embodiment, a third metal pillar 14 and a fourth metal pillar 15 are further connected between the first patch antenna 3 and the metal floor 1; the third metal column 14 is arranged in a hollow manner; the third metal post 14 and the fourth metal post 15 are disposed on a central plane perpendicular to the polarization direction of the first patch antenna 3.
Referring to fig. 3 to 5, in an embodiment, the first patch antenna 3 is connected to a first feeding unit, and the first feeding unit includes: a first feeding probe 16, one end of which is connected to the first patch antenna 3 and the other end of which is connected to a first feeding port 17; a through hole through which a first feed probe 16 passes is formed in the metal floor 1, and one end of the first feed probe 16 passes through the metal floor 1 and then is in contact with and electrically connected with the first patch antenna 3, so that the first patch antenna 3 is directly fed; the other end of the first feed probe 16 is connected to a first feed port 17. In an embodiment, the first feeding probe 16 is located on another central plane of the first patch antenna 3, i.e. a central plane perpendicular to the central plane where the third metal pillar 14 and the fourth metal pillar 15 are located.
In an embodiment, the first patch antenna 3 is directly fed by the first feeding probe 16, generating linearly polarized radiation, which operates in the 2.4GHz WLAN band with a frequency range of 2.38-2.52 GHz.
Referring to fig. 4 to 7, in an embodiment, the second patch antenna 5 is connected to a second feeding unit, and the second feeding unit includes: and an L-shaped feeding unit 4, one end of which is coupled to the second patch antenna 5 for feeding, and the other end of which is connected to one end of a second feeding probe 19, and the other end of the second feeding probe 19 is connected to the second feeding port 20. In an embodiment, the second feeding probe 19 passes through the inside of the third metal pillar 14; one end of the second feed probe 19 penetrates through the metal floor 1, the third metal column 14 and the first patch antenna 3 in sequence and then is in contact and electric connection with the L-shaped feed unit 4 to carry out direct feed; the other end of the second feeding probe 19 is connected with a second feeding port 20; the second feed probe 19 is further sleeved with an outer conductor 18, and the inner surface of the outer conductor 18 is coated with an insulating layer, so that the outer conductor 18 is insulated from the second feed probe 19; the outer conductor 18 is electrically conductive in its body, so that the outer conductor 18 is electrically connected to the third metal post 14 and the first patch antenna 3.
In an embodiment, the L-shaped feeding unit 4 includes an L-shaped transmission line 401 and an L-shaped probe 402 connected together, and an end of the L-shaped transmission line 401 away from the L-shaped probe 402 is connected to the second feeding probe 19 and is directly fed by the second feeding probe 19; the end of the L-shaped probe 402 remote from the L-shaped transmission line 401 is coupled to feed the second patch antenna 5. In an embodiment, the L-shaped transmission line 401 and the L-shaped probe 402 are an integrated structure; the L-shaped probe 402 is located below the second patch antenna 5, and a gap is left between the L-shaped probe and the second patch antenna 5, so that coupling feeding of the second patch antenna 5 is realized.
In the embodiment, the second patch antenna 5 is coupled and fed by the L-shaped feeding unit 4, generates the same polarization direction as the first patch antenna 3, operates in a frequency band of 5.8GHz, and has a frequency coverage range of 4.7-5.95 GHz.
Referring to fig. 6, 8 to 13, in an embodiment, the magnetoelectric dipole antenna is connected to a third feeding unit, where the third feeding unit includes: one end of the first rectangular waveguide 13 is connected with the magnetoelectric dipole antenna, the other end of the first rectangular waveguide 13 is connected with a second rectangular waveguide 21, and one end, far away from the first rectangular waveguide 13, of the second rectangular waveguide 21 is connected with a third feed port 22; thus, the magnetoelectric dipole antenna is directly fed by the first rectangular waveguide 13.
In an embodiment, the magnetoelectric dipole antenna includes: an antenna assembly for transceiving signals; and a feeding component for feeding the antenna component; one end of the feed component is connected with the antenna component, and the other end of the feed component is connected with the third feed unit. The feed assembly is arranged between the antenna assembly and the second patch antenna 5, and one end, far away from the metal floor 1, of the first rectangular waveguide 13 is connected with the feed assembly, so that the antenna assembly of the magnetoelectric dipole antenna is fed.
In an embodiment, the feeding assembly comprises: a first dielectric substrate 6 provided between the antenna assembly and the second patch antenna 5; the first metallization layer 8 is arranged on one side, close to the second patch antenna 5, of the first dielectric substrate 6, and a rectangular groove 801 is etched in the position, corresponding to the feed unit, of the first metallization layer 8; the second metallization layer 9 is arranged on one side, close to the antenna assembly, of the first dielectric substrate 6, a gap 901 is etched in the second metallization layer 9, and the gap 901 is used for feeding the antenna assembly; the first dielectric substrate 6 is periodically arranged with second metal posts 12 connected between the first metallization layer 8 and the second metallization layer 9. In the embodiment, the side length of the first dielectric substrate 6 is the same as the side length of the second patch antenna 5, and the first dielectric substrate 6 and the second patch antenna 5 are arranged in an overlapping manner; the rectangular groove 801 arranged on the first metallization layer 8 corresponds to the center position of the first dielectric substrate 6, the second rectangular groove 801 corresponds to the first rectangular waveguide 13, and the size of the rectangular groove 801 is the same as the caliber of the first rectangular waveguide 13; the feeding component is composed of second metal columns 12 which are arranged periodically to form a substrate integrated waveguide, and a slot 901 is arranged on one side of the substrate integrated waveguide close to the antenna component, so that the feeding component feeds power to the antenna component after receiving the power fed by the first rectangular waveguide 13.
In an embodiment, the antenna assembly includes a third metallization layer 10 and a second dielectric substrate 7, where the third metallization layer 10 is disposed on a side of the second dielectric substrate 7 away from the feeding assembly, and a first metal pillar 11 connected to the third metallization layer 10 is disposed in the second dielectric substrate 7. In an embodiment, the second dielectric substrate 7 is disposed on a side of the second metallization layer 9 away from the first dielectric substrate 6; the side length of the second dielectric substrate 7 is the same as that of the first dielectric substrate 6, and the second dielectric substrate 7 and the first dielectric substrate 6 are arranged in an overlapping mode. In an embodiment, two third metallization layers 10 are arranged in parallel, two third metallization layers 10 correspond to two sides of the gap 901, and the two third metallization layers 10 are connected to the first metal pillar 11; one end of the first metal pillar 11 is connected to the third metallization layer 10, and the other end thereof is connected to the second metallization layer 9.
In the embodiment, the magnetoelectric dipole antenna is directly fed by the first rectangular waveguide 13, generates the same polarization direction as the first patch antenna 3 and the second patch antenna 5, works in a 60-GHz frequency band, and has a frequency coverage range of 55-69 GHz.
In the embodiment, the outer side of the high frequency ratio three-wire polarized antenna is also provided with a shell 24.
In summary, the high-frequency-ratio three-wire polarized antenna provided by the invention feeds the first patch antenna 3, the second patch antenna 5 and the magnetoelectric dipole antenna through the three feeding ports respectively to generate three identical linearly polarized waves; meanwhile, the first patch antenna 3, the second patch antenna 5 and the magnetoelectric dipole antenna respectively work in different frequency bands, so that the three-wire polarized antenna with a large frequency ratio has a large frequency ratio.
The working performance of the high frequency ratio three-wire polarized antenna provided by the invention is described by combining specific experiments.
Referring to fig. 14 and 15, schematic diagrams are labeled for the dimensions of a large frequency ratio triple polarized antenna in the experiment, in which: l1=140mm, L2=54mm, L3=18mm, L4=15mm, L5=18mm, L6=10mm, H1=4mm, H2= 8mm, H3=5 mm.
FIG. 16 is a graph showing the results of the simulation and testing of the reflection coefficient of the large frequency ratio three-way polarized antenna in the experiment; where the solid line (Simulated) represents the simulation results and the dashed line (Measured) represents the test results. The result shows that the high-frequency-ratio three-wire polarized antenna has three working frequency bands which respectively work at 2.4/5.8/60GHz and cover three frequency ranges of 2.38-2.52GHz, 4.7-5.95 GHz and 55-69 GHz.
FIG. 17 shows the results of the isolation between microwave and millimeter wave ports for simulation and testing of large frequency ratio triple-polarized antennas in experiments; wherein
And
representative simulationAs a result, wherein
And
representing the test results. The results show that the isolation between the millimeter wave (60 GHz) port and the microwave (2.4/5.8 GHz) port is higher than 40 dB in the range of 50-70 GHz.
FIG. 18 shows a gain diagram for simulation and testing of a large frequency ratio triple-polarized antenna during an experiment; wherein the solid line (Simulated) represents the simulation results and the dashed line (Measured) represents the test results. The result shows that the maximum value of the gain is 9.85 dBi within the range of 2.38-2.52 GHz; in the range of 4.7-5.95 GHz, the maximum value of the gain is 7.95 dBi; in the 55-69 GHz range, the gain maximum is 8 dBi.
Referring to fig. 19 and 20, simulated and tested patterns of the large frequency ratio triple-polarized antenna operating at 2.45GHz during the experiment are shown; it can be seen from the figure that the high frequency ratio triple-polarized antenna produces a directional radiation pattern at 2.45 GHz.
Referring to fig. 21 and 22, the simulated and tested patterns of the large frequency ratio triple-polarized antenna operating at 5.2GHz in the experiment are shown; it can be seen from the figure that the large frequency ratio triple-polarized antenna produces a directional radiation pattern at 5.2 GHz.
Referring to fig. 23 and 24, simulated test patterns of the large frequency ratio triple-polarized antenna operating at 60GHz during the experiment are shown; it can be seen from the figure that the large frequency ratio triple-polarized antenna produces a directional radiation pattern at 60 GHz.
The above-described embodiments are only one of the preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.
Claims (7)
1. A high frequency ratio triplex polarized antenna, comprising: a first patch antenna (3) and a second patch antenna (5) which are stacked; the magnetoelectric dipole antenna is arranged on one side, away from the first patch antenna (3), of the second patch antenna (5); the metal floor (1) is provided with a first patch antenna (3), a second patch antenna (5) and a magnetoelectric dipole antenna, and the first patch antenna (3), the second patch antenna (5) and the magnetoelectric dipole antenna are sequentially arranged in the direction away from the metal floor (1); the first patch antenna (3), the second patch antenna (5) and the magnetoelectric dipole antenna are respectively connected with a feed unit;
the first patch antenna (3) is connected with a first feed unit, and the first feed unit comprises:
a first feed probe (16) having one end connected to the first patch antenna (3) and the other end connected to a first feed port (17);
the second patch antenna (5) is connected with a second feeding unit, and the second feeding unit comprises: an L-shaped feeding unit (4), one end of which is coupled with the second patch antenna (5) for feeding, the other end of which is connected with one end of a second feeding probe (19), and the other end of the second feeding probe (19) is connected with a second feeding port (20);
the magnetoelectric dipole antenna is connected with a third feeding unit, and the third feeding unit comprises:
the electromagnetic wave feed antenna comprises a first rectangular waveguide (13), one end of the first rectangular waveguide (13) is connected with the magnetoelectric dipole antenna, the other end of the first rectangular waveguide is connected with a second rectangular waveguide (21), and one end, far away from the first rectangular waveguide (13), of the second rectangular waveguide (21) is connected with a third feed port (22).
2. The large frequency ratio triple-polarized antenna according to claim 1, characterized in that a third metal column (14) and a fourth metal column (15) are connected between the first patch antenna (3) and the metal floor (1), and the third metal column (14) is hollow.
3. The large frequency ratio three-wire polarized antenna according to claim 1, wherein the L-shaped feeding unit (4) comprises an L-shaped transmission line (401) and an L-shaped probe (402) connected together, wherein an end of the L-shaped transmission line (401) far away from the L-shaped probe (402) is connected to a second feeding probe (19), and an end of the L-shaped probe (402) far away from the L-shaped transmission line (401) is used for coupling feeding the second patch antenna (5).
4. The high frequency ratio triplex polarized antenna of claim 1, wherein the magneto-electric dipole antenna comprises: an antenna assembly for transceiving signals; and a feeding component for feeding the antenna component, wherein one end of the feeding component is connected with the antenna component, and the other end of the feeding component is connected with the feeding unit.
5. The large frequency ratio triplex polarized antenna of claim 4, wherein the feed assembly comprises:
a first dielectric substrate (6) provided between the antenna assembly and the second patch antenna (5);
the first metallization layer (8) is arranged on one side, close to the second patch antenna (5), of the first dielectric substrate (6), and a rectangular groove (801) is etched in the position, corresponding to the feed unit, of the first metallization layer (8);
the second metallization layer (9) is arranged on one side, close to the antenna assembly, of the first dielectric substrate (6), a gap (901) is etched in the second metallization layer (9), and the gap (901) is used for feeding the antenna assembly;
and second metal columns (12) are periodically arranged in the first dielectric substrate (6) and are connected between the first metallization layer (8) and the second metallization layer (9).
6. The large frequency ratio three-wire polarized antenna according to claim 4 or 5, wherein the antenna component comprises a third metallized layer (10) and a second dielectric substrate (7), the third metallized layer (10) is disposed on the second dielectric substrate (7) at a side away from the feeding component, and a first metal pillar (11) connected to the third metallized layer (10) is disposed in the second dielectric substrate (7).
7. The large frequency ratio triplex polarized antenna according to claim 1, wherein a reflective plate (2) is circumferentially disposed around the metal floor (1).
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| CN111446543B (en) * | 2020-02-16 | 2022-07-01 | 西安电子科技大学 | Single-feed dual-circular polarization directional antenna with extremely-low frequency ratio and antenna system |
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