CN112821055A - Single-port dual-frequency dual-polarization omnidirectional antenna applied to WIFI - Google Patents
Single-port dual-frequency dual-polarization omnidirectional antenna applied to WIFI Download PDFInfo
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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
- 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
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/104—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
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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
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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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 discloses a single-port double-frequency dual-polarization omnidirectional antenna applied to WIFI (wireless fidelity), which comprises a reflecting plate, a first dielectric plate and a second dielectric plate, wherein the first dielectric plate is horizontally arranged, the second dielectric plate is vertically arranged, the upper surface and the lower surface of the first dielectric plate are symmetrically attached with a first dipole antenna and a second dipole antenna to form a dipole antenna array consisting of four dipole antennas, the dipole antenna array is used for realizing omnidirectional radiation and horizontal polarization characteristics of 5G signals, a radiator and a feed lead are attached to the first surface of the second dielectric plate, a ground wire is attached to the second surface of the second dielectric plate, the middle part of the radiator is connected with the feed lead to form a feed point, two tail ends of the radiator are connected with the reflecting plate to form a loop, and the loop is used for realizing the omnidirectional radiation and vertical polarization characteristics of 2.4G signals Small size, good omni-directionality and high average gain.
Description
Technical Field
The invention belongs to the field of antenna design, and particularly relates to a single-port dual-frequency dual-polarization omnidirectional antenna applied to WIFI.
Background
In recent decades, with the rapid development of the information technology industry, the number of electronic devices needing to be networked is rapidly increased, and the requirements on the WIFI devices are higher and higher correspondingly. The omni-directional coverage of signals, high data transmission rate is now an important performance index of WIFI devices. The current wireless communication equipment adopts the omnidirectional antenna or the intelligent antenna beam scanning to realize the omnidirectional coverage, realizes the high throughput rate of data through the MIMO antenna technology, but in some open places, because the multipath reflection weakens, the space diversity can not realize higher throughput rate, the polarization diversity needs to be introduced at this moment, namely better MIMO effect and omnidirectional characteristic are realized with horizontal polarization omnidirectional radiation antenna and vertical polarization omnidirectional radiation antenna. The dual-frequency dual-polarization omnidirectional antenna related in the existing documents and patents is almost realized in a dual-port feeding mode, so that the miniaturization of the antenna cannot be realized, the space is saved, the structural design is complicated, and the assembly and installation cost is increased. Therefore, it is necessary to design a single-port dual-frequency horizontal and vertical dual-polarization omnidirectional antenna.
Disclosure of Invention
The invention aims to provide a single-port dual-frequency dual-polarization omnidirectional antenna applied to WIFI, which has the characteristics of dual-frequency, horizontal and vertical dual polarization, wide frequency, small size, good omni-directionality and high average gain.
In order to solve the problems, the technical scheme of the invention is as follows:
a single-port dual-frequency dual-polarization omnidirectional antenna applied to WIFI comprises: the antenna comprises a first antenna, a second antenna and a reflecting plate;
the first antenna comprises a first dielectric plate, a first dipole antenna and a second dipole antenna, the first dielectric plate is horizontally placed, the first dielectric plate comprises a first surface and a second surface which are opposite to each other, the first dipole antenna and the second dipole antenna are respectively attached to the first surface and the second surface of the first dielectric plate, the first dipole antenna and the second dipole antenna are respectively in a shape like Chinese character 'ji', and the first antenna is used for realizing omnidirectional radiation and horizontal polarization of 5G signals;
the second antenna comprises a second dielectric plate, a radiator, a feed lead and a ground wire, the second dielectric plate is fixedly arranged on the second surface of the first dielectric plate, the second dielectric plate is perpendicular to the first dielectric plate, the second dielectric plate comprises a first surface and a second surface which are opposite, the radiator and the feed lead are attached to the first surface of the second dielectric plate, one end of the feed lead is connected with the reflecting plate, the other end of the feed lead penetrates through the first dielectric plate to be connected with the first dipole antenna and used for feeding the first dipole antenna, the ground wire is attached to the second surface of the second dielectric plate, one end of the ground wire is connected with the reflecting plate, the other end of the ground wire is connected with the second dipole antenna and used for feeding the second dipole antenna, the middle part of the radiator is connected with the feed lead to form a feed point, two tail ends of the radiator are connected with the reflecting plate to form a loop, and the second antenna is used for realizing the omnidirectional radiation and the vertical polarization characteristic of 2.4G signals;
the reflecting plate is fixedly arranged on one side, far away from the first dielectric plate, of the second dielectric plate, and the reflecting plate is perpendicular to the second dielectric plate.
Preferably;
the first dipole antenna comprises four first transmission lines and four first antenna arms, the four first transmission lines extend outwards from a first feeding point and form a first microstrip double-line feeding network which is in a cross shape integrally, the first transmission lines are connected in parallel through the first feeding point, and the four first antenna arms are arranged at the tail ends of the first transmission lines clockwise or anticlockwise;
the second dipole antenna comprises four second transmission lines and four second antenna arms, the four second transmission lines extend outwards from a second feeding point, the four second transmission lines form a second microstrip double-line feeding network which is integrally in a cross shape, the second transmission lines are connected in parallel through the second feeding point, and the four second antenna arms are arranged at the tail ends of the second transmission lines clockwise or anticlockwise.
Preferably, the radiator adopts a loop antenna, and includes a first extension branch connected to the feed line along the horizontal direction, two ends of the first extension branch are respectively bent toward one side of the reflector to form a second extension branch and a third extension branch, one end of the second extension branch close to the reflector is connected to the reflector, and one end of the third extension branch close to the reflector is connected to the reflector.
Preferably, the power feeding device further comprises a plurality of fixed elastic pieces, the power feeding lead, the ground wire, the second extension branch and the third extension branch are connected with the reflecting plate through the fixed elastic pieces, each fixed elastic piece comprises an elastic piece body and a connecting piece bent and extended along the side edge of the elastic piece body, the elastic piece body is fixedly installed on the reflecting plate, and the connecting pieces are fixedly connected with the power feeding lead, the ground wire, the second extension branch and the third extension branch respectively.
Preferably, the first transmission line and the second transmission line both adopt a gradual change type transmission line.
Preferably, the dipole antenna is a printed dipole antenna or a chemical-plated dipole antenna.
Preferably, the first dielectric plate and the second dielectric plate are made of polycarbonate materials or printed circuit boards.
Preferably, the working frequency bands covered by the single-port dual-frequency dual-polarization omnidirectional antenna comprise 2400-2500 MHz and 5150-5850 MHz.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
1) the invention provides a single-port double-frequency dual-polarization omnidirectional antenna applied to WIFI (wireless fidelity), which comprises a reflecting plate, a first dielectric plate and a second dielectric plate, wherein the first dielectric plate is horizontally arranged, the second dielectric plate is vertically arranged, the second dielectric plate is fixedly arranged below the first dielectric plate, a first dipole antenna and a second dipole antenna are symmetrically attached to the upper surface and the lower surface of the first dielectric plate, a dipole antenna array consisting of four dipole antennas is formed and used for realizing the omnidirectional radiation and horizontal polarization characteristics of 5G signals, a radiating body and a feed lead are attached to the first surface of the second dielectric plate, a ground wire is attached to the second surface of the second dielectric plate, the middle part of the radiating body is connected with the feed lead to form a feed point, two tail ends of the radiating body are connected with the reflecting plate to form a loop and used for realizing the omnidirectional radiation and vertical polarization characteristics of 2.4G signals, and the omnidirectional antenna provided by the invention has a single port and a, Double-frequency, horizontal and vertical dual polarization, wide frequency, small size, good omni-directionality and high average gain.
Drawings
Fig. 1 is a three-dimensional perspective view of a single-port dual-frequency dual-polarization omnidirectional antenna applied to WIFI provided in an embodiment of the present invention;
FIG. 2 is a schematic view of a first surface of the first dielectric plate of FIG. 1;
FIG. 3 is a schematic diagram of a second surface of the first dielectric plate of FIG. 1;
FIG. 4 is a three-dimensional perspective view of a second dielectric slab of FIG. 1;
FIG. 5 is a schematic view of a first surface of the second dielectric plate shown in FIG. 3;
FIG. 6 is a schematic diagram of a second surface of the second dielectric plate shown in FIG. 3;
fig. 7 is an enlarged view of a portion a in fig. 1.
Description of reference numerals:
1: a first antenna; 11: a first dielectric plate; 12: a first dipole antenna; 121: a first transmission line; 122: a first antenna arm; 13: a second dipole antenna; 131: a second transmission line; 132: a second antenna arm; 2: a second antenna; 21: a second dielectric plate; 22: a radiator; 221: a first extension branch; 222: a second extension branch; 223: a third extension branch; 23: a feed conductor; 24: a ground wire; 3: a reflective plate; 4: fixing the elastic sheet; 41: a spring plate body; 42: and (7) connecting the sheets.
Detailed Description
The following describes a single-port dual-band dual-polarized omnidirectional antenna applied to WIFI in further detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims.
Referring to fig. 1 to 7, the present invention provides a single-port dual-frequency dual-polarization omnidirectional antenna applied to WIFI, including: a first antenna 1, a second antenna 2 and a reflector 3;
the first antenna 1 comprises a first dielectric plate 11, a first dipole antenna 12 and a second dipole antenna 13, the first dielectric plate 11 is horizontally arranged, the first dielectric plate 11 comprises a first surface and a second surface which are opposite to each other, the first dielectric plate 11 is made of polycarbonate materials or printed circuit boards, the polycarbonate materials or the printed circuit boards are common materials in the industry, the cost is low, the first dipole antenna 12 and the second dipole antenna 13 are respectively attached to the first surface and the second surface of the first dielectric plate 11, and the first dipole antenna 12 and the second dipole antenna 13 are respectively integrally shaped like a swastika; in the embodiment, a printing technology is applied to chemically plate or electroplate or print the first dipole antenna 12 and the second dipole antenna 13 on the upper surface and the lower surface of the first dielectric plate 11;
referring to fig. 2, in the present embodiment, the first dipole antenna 12 includes four first transmission lines 121 and four first antenna arms 122 extending outwards from a first feeding point, the four first transmission lines 121 form a first microstrip dual feed network in a cross shape as a whole, and the first transmission lines 121 are connected in parallel through the first feeding point. The four first antenna arms 122 are disposed at the ends of the first transmission lines 121 clockwise or counterclockwise, in this embodiment, the four first antenna arms 122 are disposed at the ends of the first transmission lines 121 clockwise, and the four first antenna arms 122 enclose a circle;
referring to fig. 3, in the present embodiment, the second dipole antenna 13 includes four second transmission lines 131 and four second antenna arms 132 extending outward from the second feeding point, the four second transmission lines 131 form a second microstrip dual feed network in a cross shape as a whole, and the second transmission lines 131 are connected in parallel via the second feeding point. The four second antenna arms 132 are disposed at the ends of the second transmission lines 131 clockwise or counterclockwise, in this embodiment, the four second antenna arms 132 are disposed at the ends of the second transmission lines 131 clockwise, and the four second antenna arms 132 enclose a circle;
the first antenna 1 adopts a dipole antenna array and comprises four pairs of radiating elements, two arms of each pair of dipoles are symmetrically distributed on two surfaces of a first dielectric plate 11, the four pairs of dipoles are distributed on the first dielectric plate 11 at equal angles, a first microstrip double-line feed network and a second microstrip double-line feed network are arranged on the first surface and the second surface of the first dielectric plate 11 in parallel, and the middle areas of the first microstrip double-line feed network and the second microstrip double-line feed network are respectively a first feed point and a second feed point. Four pairs of dipole antennas with the same 5G frequency band are placed on a horizontal plane to form a circle, equal-amplitude in-phase feeding is carried out, excitation is fed into two arms of a dipole through a micro-strip double-line feeding network, current is uniformly distributed on each pair of dipole antennas, electric fields of far radiation fields are superposed, the dipole antennas convert fed-in conductive traveling waves into electromagnetic waves which are transmitted in free space, a radiation field is formed, and the omnidirectional radiation and horizontal polarization characteristics of 5G signals are realized;
referring to fig. 4, the second antenna 2 includes a second dielectric plate 21, a radiator 22, a feeding wire 23 and a ground wire 24, the second dielectric plate 21 is fixedly mounted on the second surface of the first dielectric plate 11, the second dielectric plate 21 is perpendicular to the first dielectric plate 11, the second dielectric plate 21 is made of a polycarbonate material or a printed circuit board, the polycarbonate material or the printed circuit board is a common material in industry, and has a low cost, in this embodiment, the second dielectric plate 21 is fixed to the first dielectric plate 11 by welding, the second dielectric plate 21 includes a first surface and a second surface opposite to each other, referring to fig. 5, the radiator 22 and the feeding wire 23 are attached to the first surface of the second dielectric plate 21, one end of the feeding wire 23 is connected to the reflection plate 3, the other end of the feeding wire 23 passes through the first dielectric plate 11 and is connected to the first dipole antenna 12, for feeding the first dipole antenna 12, in this embodiment, the feeding wire 23 is vertically printed on the center line of the first surface of the second dielectric plate 21, and corresponds to the position of the center of the circle of the first antenna 1, and the upper end of the feeding wire 23 passes through the first dielectric plate 11 and is connected to the first feeding point;
referring to fig. 6, a ground wire 24 is attached to the second surface of the second dielectric plate 21, one end of the ground wire 24 is connected to the reflector plate 3, and the other end of the ground wire 24 is connected to the second dipole antenna 13 for feeding the second dipole antenna 13, in this embodiment, the ground wire 24 is vertically printed on a center line of the second surface of the second dielectric plate 21 and corresponds to a circle center position of the first antenna 1, and an upper end of the ground wire 24 is connected to the second feeding point;
the middle of the radiator 22 is connected to the feed wire 23 to form a feed point, and both ends of the radiator 22 are connected to the reflector 3 to form a loop, in this embodiment, the radiator 22 is a 2.4G loop antenna, the radiator 22 includes a first extension branch 221 connected to the feed wire 23 along the horizontal direction, both ends of the first extension branch 221 are respectively bent toward one side of the reflector 3 to form a second extension branch 222 and a third extension branch 223, one end of the second extension branch 222 close to the reflector 3 is connected to the reflector 3, one end of the third extension branch 223 close to the reflector 3 is connected to the reflector 3, and the loop antenna is properly bent to reduce the overall height of the antenna;
the ground wire 24 in the microstrip transmission line is connected with the reflector, the excitation is input from the feed lead 23, the loop antenna is connected with the feed lead 23 at a proper position to form a feed point, the tail end of the loop antenna is connected with the reflector 3 to form a loop, and the omnidirectional radiation and vertical polarization characteristics of 2.4G signals are realized.
The reflecting plate 3 is fixedly arranged on one side, far away from the first dielectric plate 11, of the second dielectric plate 21, the reflecting plate 3 is perpendicular to the second dielectric plate 21, the reflecting plate 3 is parallel to the first dielectric plate 11, and the second dielectric plate 21 is clamped between the first dielectric plate 11 and the reflecting plate 3.
In this embodiment, the fixing elastic pieces 4 are further included, the reflective plate 3 and the second dielectric plate 21 are fixedly connected through the fixing elastic pieces 4, and the fixing elastic pieces 4 are distributed at the connection positions of the feed lead 23, the ground lead 24, the second extending branch 222 and the third extending branch 223 with the reflective plate 3, that is, the feed lead 23, the ground lead 24, the second extending branch 222 and the third extending branch 223 are all connected with the reflective plate 3 through the fixing elastic pieces 4, as shown in fig. 7, the fixing elastic pieces 4 include an elastic piece body 41 and a connecting piece 41 bent and extended along the side edge of the elastic piece body 41, the elastic piece body 41 is fixedly installed on the reflective plate 4 through screws, and the connecting pieces 41 are respectively connected with the feed lead 23, the ground lead 24, the second extending branch 222 and the third extending branch 223 in a welding manner.
More specifically, a printed dipole is used as a dipole antenna radiation unit, and a microstrip line is used for feeding power to a 2.4G/5G frequency band
The half-arm length of the dipole is l, and l is a quarter wavelength of the working frequency, then the current of the half-wave dipole antenna is:
the function of the far field directional diagram of the half-wave dipole antenna is as follows:
half-wave dipole directivity coefficient
The directivity factor is expressed in decibels:
DdB＝10lg(1.64)＝2.15dB
representing the average power density of a dipole antenna by an average vector of
Substituting electromagnetic field radiated by dipole antenna into formula
Half dipole radiation power
Expressed in resistance form as:
the radiation impedance of the dipole antenna can be calculated as
Rr＝73.2Ω
The microstrip line has the main transmission characteristics:
the microstrip line satisfies the transmission line equation as other transmission lines. If the loss is ignored:
characteristic impedance
Phase velocity
In the formula, L and C are respectively a unit length distributed inductance and a unit length distributed capacitance on the microstrip line.
Equivalent relative dielectric constant
The above formula is an equivalent relative dielectric constant calculation formula, the value of which is between the dielectric constant of air and the dielectric constant of the dielectric plate, and h is the thickness of the dielectric plate.
The working frequency range of the omnidirectional antenna provided by the invention is 2400 MHz-2483 MHz, 5150 MHz-5850 MHz; the return loss in the frequency band is below-10 dB. The maximum gain in the frequency band of 2400 MHz-2483 MHz is 6.1dBi, the maximum beam direction is about 60 degrees at theta, the out-of-roundness is within 8dB, and the horizontal-vertical polarization ratio is less than-15 dB; the maximum gain in the frequency band of 5150 MHz-5850 MHz is 5.7dBi, the maximum beam direction is about 70 degrees at theta, the out-of-roundness is within 4dB, the horizontal-vertical polarization ratio is more than 5dB, and the achieved index meets the existing communication standard.
The invention provides a single-port double-frequency dual-polarization omnidirectional antenna applied to WIFI (wireless fidelity), which comprises a reflecting plate, a first dielectric plate and a second dielectric plate, wherein the first dielectric plate is horizontally arranged, the second dielectric plate is vertically arranged, the second dielectric plate is fixedly arranged below the first dielectric plate, a first dipole antenna and a second dipole antenna are symmetrically attached to the upper surface and the lower surface of the first dielectric plate, a dipole antenna array consisting of four dipole antennas is formed and used for realizing the omnidirectional radiation and horizontal polarization characteristics of 5G signals, a radiator and a feed lead are attached to the first surface of the second dielectric plate, a ground wire is attached to the second surface of the second dielectric plate, the middle part of the radiator is connected with the feed lead to form a feed point, two tail ends of the radiator are connected with the reflecting plate to form a loop and used for realizing the omnidirectional radiation and vertical polarization characteristics of 2.4G signals, the omnidirectional antenna provided by the invention adopts a structure of combining a printed dipole with a loop antenna, the broadband dual-polarization antenna has the characteristics of single port, dual-frequency, horizontal and vertical dual polarization, broadband, small size, good omni-directionality and high average gain.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (8)
1. The utility model provides a be applied to WIFI's single port dual-frenquency double polarization omnidirectional antenna which characterized in that includes: the antenna comprises a first antenna, a second antenna and a reflecting plate;
the first antenna comprises a first dielectric plate, a first dipole antenna and a second dipole antenna, the first dielectric plate is horizontally placed, the first dielectric plate comprises a first surface and a second surface which are opposite to each other, the first dipole antenna and the second dipole antenna are respectively attached to the first surface and the second surface of the first dielectric plate, the first dipole antenna and the second dipole antenna are respectively in a shape like Chinese character 'ji', and the first antenna is used for realizing omnidirectional radiation and horizontal polarization of 5G signals;
the second antenna comprises a second dielectric plate, a radiator, a feed lead and a ground wire, the second dielectric plate is fixedly arranged on the second surface of the first dielectric plate, the second dielectric plate is perpendicular to the first dielectric plate, the second dielectric plate comprises a first surface and a second surface which are opposite, the radiator and the feed lead are attached to the first surface of the second dielectric plate, one end of the feed lead is connected with the reflecting plate, the other end of the feed lead penetrates through the first dielectric plate to be connected with the first dipole antenna and used for feeding the first dipole antenna, the ground wire is attached to the second surface of the second dielectric plate, one end of the ground wire is connected with the reflecting plate, the other end of the ground wire is connected with the second dipole antenna and used for feeding the second dipole antenna, the middle part of the radiator is connected with the feed lead to form a feed point, two tail ends of the radiator are connected with the reflecting plate to form a loop, and the second antenna is used for realizing the omnidirectional radiation and the vertical polarization characteristic of 2.4G signals;
the reflecting plate is fixedly arranged on one side, far away from the first dielectric plate, of the second dielectric plate, and the reflecting plate is perpendicular to the second dielectric plate.
2. The single-port dual-frequency dual-polarization omnidirectional antenna applied to WIFI of claim 1, wherein the antenna comprises a base and a plurality of antenna elements;
the first dipole antenna comprises four first transmission lines and four first antenna arms, the four first transmission lines extend outwards from a first feeding point and form a first microstrip double-line feeding network which is in a cross shape integrally, the first transmission lines are connected in parallel through the first feeding point, and the four first antenna arms are arranged at the tail ends of the first transmission lines clockwise or anticlockwise;
the second dipole antenna comprises four second transmission lines and four second antenna arms, the four second transmission lines extend outwards from a second feeding point, the four second transmission lines form a second microstrip double-line feeding network which is integrally in a cross shape, the second transmission lines are connected in parallel through the second feeding point, and the four second antenna arms are arranged at the tail ends of the second transmission lines clockwise or anticlockwise.
3. The single-port dual-frequency dual-polarization omnidirectional antenna applied to WIFI according to claim 2, wherein the radiator is a loop antenna and comprises a first extension branch connected with the feed conductor in the horizontal direction, two ends of the first extension branch are respectively bent towards one side of the reflector to form a second extension branch and a third extension branch, one end of the second extension branch close to the reflector is connected with the reflector, and one end of the third extension branch close to the reflector is connected with the reflector.
4. The single-port dual-frequency dual-polarization omnidirectional antenna applied to WIFI (wireless fidelity) according to claim 3, further comprising a plurality of fixed elastic pieces, wherein the feed wire, the ground wire, the second extension branch and the third extension branch are connected with the reflector plate through the fixed elastic pieces, each fixed elastic piece comprises an elastic piece body and connecting pieces bent and extended along the side edges of the elastic piece body, the elastic piece body is fixedly installed on the reflector plate, and the connecting pieces are respectively and fixedly connected with the feed wire, the ground wire, the second extension branch and the third extension branch.
5. The single-port dual-frequency dual-polarization omnidirectional antenna applied to WIFI according to claim 2, wherein the first transmission line and the second transmission line are both tapered transmission lines.
6. The single-port dual-frequency dual-polarization omnidirectional antenna applied to WIFI according to claim 1, wherein the dipole antenna is a printed dipole antenna or a chemical-plated dipole antenna.
7. The single-port dual-frequency dual-polarization omnidirectional antenna applied to WIFI of claim 1, wherein the first dielectric plate and the second dielectric plate are made of polycarbonate materials or printed circuit boards.
8. The single-port dual-frequency dual-polarized omnidirectional antenna applied to WIFI according to claim 1, wherein the working frequency bands covered by the single-port dual-frequency dual-polarized omnidirectional antenna comprise 2400-2500 MHz and 5150-5850 MHz.
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| CN113506978A (en) * | 2021-06-17 | 2021-10-15 | 福耀玻璃工业集团股份有限公司 | On-vehicle V2X antenna, glass unit and vehicle |
| CN115064868A (en) * | 2022-07-06 | 2022-09-16 | 杭州电子科技大学 | Dual-polarized crossed dipole transparent antenna |
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