CN114976665A - Broadband dual-polarized dipole antenna loaded with stable frequency selective surface radiation - Google Patents
Broadband dual-polarized dipole antenna loaded with stable frequency selective surface radiation Download PDFInfo
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- CN114976665A CN114976665A CN202210743106.5A CN202210743106A CN114976665A CN 114976665 A CN114976665 A CN 114976665A CN 202210743106 A CN202210743106 A CN 202210743106A CN 114976665 A CN114976665 A CN 114976665A
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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
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
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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
- H01Q1/50—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
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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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
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention discloses a broadband dual-polarized dipole antenna with stable loading frequency selective surface radiation, which comprises a top-layer dielectric substrate and a bottom-layer dielectric substrate, wherein an air gap exists between the top-layer dielectric substrate and the bottom-layer dielectric substrate; the radiator structure comprises two orthogonally placed dipole patches, the frequency selection surface comprises nine metal sheets, and the metal sheet in the center of the center is provided with a rectangular groove. Under the condition that the height of the whole antenna is not increased, the frequency selection surface is loaded on the upper surface of the bottom layer dielectric substrate, the gain of a high frequency band can be compensated, and the radiation stability in the frequency band of 1.67 GHz-3.8GHz is realized.
Description
Technical Field
The invention relates to the technical field of radio frequency communication, in particular to a broadband dual-polarized dipole antenna loaded with stable frequency selective surface radiation.
Background
With the rapid development of modern communication technology and the continuous expansion of wireless communication frequency bands, the requirements of people on communication quality, equipment portability and the like are also correspondingly improved. The antenna plays an important role in a wireless communication system as an important terminal device for transmitting and receiving electromagnetic waves and performing interconversion with radio frequency signals. In order to meet the requirements of modern communication equipment and people, the main research and development directions of the antenna are as follows: miniaturization, multiband, broadband, and the like. Meanwhile, in order to realize mass production and application of the antenna, the structure of the antenna should be as simple as possible.
In a plurality of fields such as electronic communication, electromagnetic interference and radar detection, great attention is paid to the performance such as transmission rate and stability, and in order to realize excellent performance such as high transmission rate, strong stability and wide radiation range, an ultra-wideband antenna is proposed and deeply researched. At present, the ultra-wideband antenna has been widely applied in many fields, and with the continuous development of electronic information technology, people put forward design requirements on the ultra-wideband antenna such as directivity, high gain, miniaturization and the like, and meanwhile, the ultra-wideband multi-frequency antenna has received great attention in order to solve the problem of multi-frequency application.
Under the background of rapid change of the communication technology era, people develop more communication frequency bands and are widely applied. Although 5G mobile communication technology has been put into practice, the 2G/3G/4G technology will continue to be used for a while, and thus the demand for multi-frequency and broadband antennas has become more strong, requiring one antenna to be able to support wireless communication services in two or more frequency bands. The ultra-wideband multi-frequency antenna can solve the problems, brings about performance improvement in various aspects, and is an important application antenna for improving a communication system.
The dual-polarized dipoles are in +/-45-degree cross polarization, a wide radiation frequency band is generated through coupling resonance of the pair of cross-polarized dipoles, and a plurality of resonance modes are combined through operations of slotting, corner cutting and the like on the dipoles in a basic resonance mode, so that the radiation bandwidth of the antenna is greatly expanded, and the radiation performance of the antenna is improved. However, in the broadened radiation frequency band, the gain of the antenna in the high frequency band is slipped down, and the practical application value is lost.
In order to solve the problem of reduction of high-frequency gain, the invention can compensate the gain of a high-frequency band by introducing a frequency selection surface into the bottom layer dielectric substrate, thereby realizing the radiation stability of the whole passband.
Disclosure of Invention
The broadband dual-polarized dipole antenna comprises a 2G/3G/4G (1.7-2.7 GHz) working frequency band and a 5G (3.3-3.8 GHz) working frequency band, is realized by only two layers of dielectric substrates, has a simple structure, can realize compensation on the gain of a high frequency band after the broadband is spread by introducing a frequency selection surface on the basis of not increasing the height of the antenna without influencing the matching of the antenna, and realizes broadband dual-polarized dipole antenna with stable loading frequency selection surface radiation, wide frequency band, dual polarization and stable radiation.
In order to achieve the purpose, the invention adopts the following technical scheme:
a broadband dual-polarized dipole antenna loaded with frequency selective surface radiation stabilization, comprising: the broadband dual-polarized dipole antenna comprises a top layer dielectric substrate, a bottom layer dielectric substrate and a coaxial cable, wherein two Y-shaped baluns which are orthogonally arranged at an angle of +/-DEG are printed on the upper surface of the top layer dielectric substrate, a radiator structure is printed on the lower surface of the top layer dielectric substrate, the radiator structure is composed of two dipole patches which are orthogonally arranged at an angle of +/-DEG, and the broadband dual-polarized dipole antenna feeds the radiator structure through the coaxial cable;
the bottom medium substrate is positioned below the top medium substrate, the bottom medium substrate is connected with the top medium substrate through two coaxial cables, the upper surface of the bottom medium substrate is printed with a frequency selection surface, and the lower surface of the bottom medium substrate is printed with a reflection floor.
According to the preferred embodiment of the present invention, the number of the baluns is two, the baluns are respectively a first balun arranged on the upper surface of the top dielectric substrate in a-45 ° direction and a second balun arranged on the upper surface of the top dielectric substrate in a +45 ° direction, and a balun jumper in a +45 ° direction, the first balun and the second balun are arranged in a Y shape in an orthogonal manner, the number of the dipole patches is two, the first dipole in the-45 ° direction and the second dipole in the +45 ° direction are respectively arranged in an orthogonal manner, and the first dipole and the second dipole are arranged in an orthogonal manner.
As a preferred embodiment of the present invention, the number of the coaxial cables of the antenna of the present invention is two, and the coaxial cables are respectively a first coaxial cable and a second coaxial cable, inner conductors of the first coaxial cable and the second coaxial cable pass through the top dielectric substrate, the bottom dielectric substrate and the dipole patch and are respectively connected to the first balun and the second balun on the upper surface of the top dielectric substrate, and the coaxial cable (3) feeds the radiator structure.
As a preferred embodiment of the present invention, the first coaxial cable is connected to a first port of the antenna, the second coaxial cable is connected to a second port of the antenna, the first port generates a linearly polarized wave in a-45 ° direction when excited, and the second port generates a linearly polarized wave in a +45 ° direction when excited.
As a preferred embodiment of the present invention, the second balun disposed in the +45 ° direction is a second dipole feed in the +45 ° direction, the first balun disposed in the-45 ° direction is a first dipole feed in the-45 ° direction, the second balun in the +45 ° direction employs a jumper technology, and is connected to the rectangular microstrip line on the lower surface of the top dielectric substrate through the top dielectric substrate by two short-circuit metal probes, and the first balun in the-45 ° direction is normal
As a preferred embodiment of the present invention, the radiator structure of the present invention comprises two ± 45 ° orthogonally disposed dipole patches of a first dipole and a second dipole, each of the first dipole and the second dipole is composed of two dipole arms, each of the first dipole and the second dipole comprises two equal-sized square ring patches, each of four corners of the square ring patches has a triangular cut angle, and the first dipole and the second dipole are crossed and disposed at +45 ° and-45 ° orientations, and are symmetrical with respect to the left and right.
As a preferred embodiment of the present invention, the frequency selective surface of the present invention comprises nine metal sheets, which are arranged in a 3 × 3 array, each metal sheet has the same shape and size, and the center metal sheet is provided with a rectangular groove.
As a preferred embodiment of the present invention, the dipole patch of the present invention is composed of a square ring patch, and is configured to increase a current path and widen a bandwidth by providing three right-angled sides of the square ring patch to cut triangular chamfers of the same size and another right-angled side to cut triangular chamfers of different sizes.
As a preferred embodiment of the present invention, the frequency selective surface is printed on the upper surface of the bottom dielectric substrate of the present invention, and is used for compensating the gain of the high frequency band while maintaining the overall height of the antenna, so as to achieve stable radiation of the entire passband.
As a preferred embodiment of the present invention, a floor board is printed on the lower surface of the bottom dielectric substrate, and the floor board is provided with two ground grooves for the first coaxial cable and the first port of the antenna to pass through.
Compared with the prior art, the invention provides a broadband dual-polarized dipole antenna loaded with stable frequency selective surface radiation, which has the following beneficial effects:
1. the dipole of the antenna designed by the invention consists of the square ring patch, and the current path is increased by cutting triangular corner cuts with the same size on three right-angle sides of the square ring patch and cutting triangular corner cuts with different sizes on the other right-angle side, so that the broadband is expanded.
2. The antenna designed by the invention adopts the Y-shaped balun for feeding, and the size of the Y-shaped balun is adjusted, so that the working bandwidth can be further widened.
3. According to the antenna designed by the invention, the nine metal sheets are printed on the upper surface of the bottom layer dielectric substrate to form the frequency selection surface, so that the effects of constant low-frequency band gain and high-frequency band gain compensation are realized on the premise of not increasing the overall height of the antenna and not influencing antenna matching, and the radiation of the antenna in the whole working frequency band is stable; the antenna designed by the invention can realize the stability of full-frequency radiation in a frequency band of 1.7GHz-3.8GHz, flat gain in a passband and stable half-power lobe width in the passband on the premise of not improving the height of the antenna.
Drawings
FIG. 1 is a schematic diagram of an antenna structure according to the present invention;
FIG. 2 is a top plan view of a top dielectric substrate;
FIG. 3 is a bottom view of the top dielectric substrate;
FIG. 4 is a top view of a layered dielectric substrate;
FIG. 5 is a top view of an underlying dielectric substrate;
fig. 6 is a diagram of simulation results of S parameters of the broadband dual-polarized dipole antenna loaded with frequency selective surface radiation stabilization in the embodiment;
fig. 7 is a simulation result diagram of the variation of the gain of the broadband dual-polarized dipole antenna loaded with the frequency selective surface radiation stabilized according to the embodiment with the frequency;
fig. 8 is a simulation result diagram of the variation of the broadband dual-polarized dipole antenna HPBW loaded with stable frequency selective surface radiation with frequency according to the embodiment;
fig. 9 is a simulation result diagram of an XOZ plane pattern of the broadband dual-polarized dipole antenna loaded with the frequency selective surface radiation stabilization in the present embodiment at a frequency of 2.2 GHz;
fig. 10 is a diagram of simulation results of a YOZ plane directional pattern of the broadband dual-polarized dipole antenna loaded with frequency selective surface radiation stabilization at a frequency of 2.2GHz in the present embodiment;
fig. 11 is a diagram of simulation results of XOZ plane directional patterns of the broadband dual-polarized dipole antenna loaded with frequency selective surface radiation stability at a frequency of 2.7GHz in the present embodiment;
fig. 12 is a diagram of simulation results of a YOZ plane directional pattern of the broadband dual-polarized dipole antenna loaded with frequency selective surface radiation stabilization at a frequency of 2.7GHz in the present embodiment;
fig. 13 is a diagram of simulation results of XOZ plane directional patterns of the broadband dual-polarized dipole antenna loaded with stable frequency selective surface radiation at the frequency of 3.6GHz in the present embodiment;
fig. 14 is a simulation result diagram of a YOZ plane directional pattern of the broadband dual-polarized dipole antenna loaded with frequency selective surface radiation stabilization in the embodiment at the frequency of 3.6 GHz.
In the figure: 1. a dipole patch; 1a, a first dipole; 1b, a second dipole; 2. a balun; 2a, a first balun; 2b, a second balun; 2c, a balun jumper; 3. a coaxial cable; 3a, a first coaxial cable; 3b, a second coaxial cable; 31. a first port; 32. a second port; 4. a top dielectric substrate; 5. a bottom dielectric substrate; 6. a frequency selective surface; 7. a floor; 7a and a ground groove.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-4, the broadband dual-polarized dipole antenna with stable loaded frequency selection surface radiation comprises a top dielectric substrate 4, a bottom dielectric substrate 5 and a coaxial cable 3, wherein two baluns 2 which are orthogonally arranged at an angle of +/-45 degrees are printed on the upper surface of the top dielectric substrate 4, a radiator structure is printed on the lower surface of the top dielectric substrate, the radiator structure is composed of two dipole patches 1 which are orthogonally arranged at an angle of +/-45 degrees, and the broadband dual-polarized dipole antenna feeds the radiator structure through the coaxial cable 3;
the bottom dielectric substrate 5 is located below the top dielectric substrate 4, the bottom dielectric substrate 5 is connected with the top dielectric substrate 1 through two coaxial cables 3, the upper surface of the bottom dielectric substrate 5 is printed with a frequency selective surface 6, and the lower surface of the bottom dielectric substrate is printed with a reflective floor 7.
In an alternative embodiment, as shown in fig. 1 to 3, the number of the baluns 2 in the present invention is two, and the baluns 2a and the second baluns 2b are respectively arranged on the upper surface of the top dielectric substrate 4 and printed in a-45 ° direction and a +45 ° direction, and the balun 2c is arranged in a +45 ° direction, the first balun 2a and the second balun 2b are in a Y shape and orthogonally arranged, the number of the dipole patches 1 is two, and the first dipole 1a and the second dipole 1b are respectively arranged in a-45 ° direction and a +45 ° direction, and the first dipole 1a and the second dipole 1b are orthogonally arranged.
In the invention, the balun 2 is Y-shaped, has two numbers and is divided into a first balun 2a in a-45-degree direction and a second balun 2b in a + 45-degree direction; the balun jumper 2c is Y-shaped; the number of the dipole patches 1 is two, the dipole patches are divided into a first dipole 1a in a-45-degree direction and a second dipole 1b in a + 45-degree direction, the first dipole 1a and the second dipole 1b are orthogonally arranged, wherein the balun 2 is a balun of the antenna, and the function of the balun is mainly used for performing balance-unbalance conversion.
In an alternative embodiment, as shown in fig. 1 to 3, the number of the coaxial cables 3 is two, and the coaxial cables are respectively a first coaxial cable 3a and a second coaxial cable 3b, inner conductors of the first coaxial cable 3a and the second coaxial cable 3b pass through the top dielectric substrate 4, the bottom dielectric substrate 5, and the dipole patch 1 and are respectively connected with the first balun 2a and the second balun 2b on the upper surface of the top dielectric substrate 4, and the coaxial cables 3 feed the radiator structure.
In an alternative embodiment, as shown in fig. 1-2, the first coaxial cable 3a is connected to a first port 31 of an antenna, the second coaxial cable 3b is connected to a second port 32 of the antenna, the first port 31 generates a-45 ° direction linear polarization wave when excited, and the second port 32 generates a +45 ° direction linear polarization wave when excited.
In the invention, a first port 31 feeds power to a first dipole 1a in a-45-degree direction through a first coaxial cable 3a, and a second port 32 feeds power to a second dipole 1b in a + 45-degree direction through a second coaxial cable 3 b; when the first port 31 is excited, linear polarized waves in a-45-degree direction are generated, and when the second port 32 is excited, linear polarized waves in a + 45-degree direction are generated, so that the radiation of the antenna is more stable, and the antenna has a good radiation pattern.
In an alternative embodiment, as shown in fig. 2, in the present invention, the second balun 2b placed in the +45 ° direction is fed by the second dipole 1b in the +45 ° direction, the first balun 2a placed in the-45 ° direction is fed by the first dipole 1a in the-45 ° direction, the second balun 2b in the +45 ° direction is connected to the rectangular microstrip line on the lower surface of the top dielectric substrate 4 through the top dielectric substrate 4 by using a jumper technology, and the first balun 2a in the-45 ° direction is normally printed.
1-3, the radiator structure of the present invention includes two ± 45 ° orthogonally disposed dipole patches 1 of a first dipole 1a and a second dipole 1b, each of the first dipole 1a and the second dipole 1b is composed of two dipole arms, each of the first dipole 1a and the second dipole 1b includes two equal-sized square-ring patches 9, each of four corners of the square-ring patches 9 has a triangular cut angle 10, and the first dipole 1a and the second dipole 1b intersect and are disposed at +45 ° and-45 ° orientations, and are symmetric with respect to the left and right.
In an alternative embodiment, as shown in fig. 1, in the feeding network formed by the Y-type balun 2 and the coaxial cable 3 in the present invention, two coaxial cables 3 with 50 Ω impedance are used to feed the antenna, the inner conductor of the coaxial cable 3 passes through the cross dipole 1 on the lower surface of the top dielectric substrate 4 and is directly connected to the two Y-type baluns 2 on the upper surface of the top dielectric substrate 4, respectively, and the outer conductor of the coaxial cable 3 is directly connected to the dipole arms in the positive x direction of the two dipole patches 1 on the lower surface of the top dielectric substrate 4, respectively, thereby forming the feeding network of the antenna.
In an alternative embodiment, as shown in fig. 4, the frequency selective surface 6 of the present invention comprises nine metal sheets 8 arranged in a 3 × 3 array, each metal sheet 8 has the same shape and size, and the center metal sheet 8 is provided with a rectangular slot 6 a.
In an alternative embodiment, as shown in fig. 1, the dipole patch 1 of the present invention is composed of a square ring patch 9, and is configured to increase the current path and widen the bandwidth by providing three right-angled sides of the square ring patch 9 with triangular cut angles 10 of the same size and the other right-angled side with triangular cut angles 10 of different sizes.
The dual-polarized dipole 1 is cross-polarized at an angle of +/-45 degrees, a wide radiation frequency band is generated through coupling resonance of a pair of cross dipole patches 1, and a plurality of resonance modes are combined through operations of slotting, corner cutting and the like on the dipole in a basic resonance mode, so that the working bandwidth of the antenna is greatly expanded.
In an alternative embodiment, as shown in fig. 1, a frequency selective surface 6 is printed on the upper surface of the bottom dielectric substrate 5 in the present invention, so as to compensate the gain of the high frequency band without increasing the overall height of the antenna, and achieve radiation stability of the whole passband.
In an alternative embodiment, as shown in fig. 5, the bottom surface of the bottom dielectric substrate 5 is printed with a floor 7, and the floor 7 is provided with two slots 7a for the first coaxial cable 3a to pass through the first port 31 of the antenna.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A broadband dual-polarized dipole antenna with stable loading frequency selection surface radiation is characterized in that: the broadband dual-polarized dipole antenna comprises a top-layer dielectric substrate (4), a bottom-layer dielectric substrate (5) and a coaxial cable (3), wherein two +/-45-degree orthogonally-arranged baluns (2) are printed on the upper surface of the top-layer dielectric substrate (4), a radiator structure is printed on the lower surface of the top-layer dielectric substrate, the radiator structure is composed of two +/-45-degree orthogonally-arranged dipole patches (1), and the broadband dual-polarized dipole antenna feeds the radiator structure through the coaxial cable (3);
the bottom dielectric substrate (5) is located below the top dielectric substrate (4), the bottom dielectric substrate (5) is connected with the top dielectric substrate (1) through two coaxial cables (3), the upper surface of the bottom dielectric substrate (5) is printed with a frequency selective surface (6), and the lower surface of the bottom dielectric substrate is printed with a reflective floor (7).
2. The broadband dual-polarized dipole antenna loaded with frequency selective surface radiation stabilization according to claim 1, wherein: the number of the baluns (2) is two, the baluns are respectively a first balun (2a) arranged on the upper surface of the top-layer dielectric substrate (4) in a-45-degree direction, a second balun (2b) arranged in a + 45-degree direction and a balun jumper (2c) arranged in a + 45-degree direction, the first balun (2a) and the second balun (2b) are in a Y shape which is orthogonally arranged, the number of the dipole patches (1) is two, the first dipole (1a) is arranged in the-45-degree direction, the second dipole (1b) is arranged in the + 45-degree direction, and the first dipole (1a) and the second dipole (1b) are orthogonally arranged.
3. The broadband dual-polarized dipole antenna with stable loaded frequency selective surface radiation as claimed in claim 1, wherein: the number of the coaxial cables (3) is two, the coaxial cables are respectively a first coaxial cable (3a) and a second coaxial cable (3b), inner conductors of the first coaxial cable (3a) and the second coaxial cable (3b) penetrate through the top layer dielectric substrate (4), the bottom layer dielectric substrate (5) and the dipole patch (1) and are respectively connected with the first balun (2a) and the second balun (2b) on the upper surface of the top layer dielectric substrate (4), and the coaxial cables (3) feed the radiator structure.
4. The broadband dual-polarized dipole antenna loaded with frequency selective surface radiation stabilization according to claim 3, wherein: the first coaxial cable (3a) is connected with a first port (31) of the antenna, the second coaxial cable (3b) is connected with a second port (32) of the antenna, linear polarized waves in a-45-degree direction are generated when the first port (31) is excited, and linear polarized waves in a + 45-degree direction are generated when the second port (32) is excited.
5. The broadband dual-polarized dipole antenna loaded with frequency selective surface radiation stabilization according to claim 2, wherein: the second balun (2b) placed in the + 45-degree direction is fed by a second dipole (1b) in the + 45-degree direction, the first balun (2a) placed in the-45-degree direction is fed by a first dipole (1a) in the-45-degree direction, the second balun (2b) in the + 45-degree direction is connected to a rectangular microstrip line on the lower surface of the top dielectric substrate (4) through two short-circuit metal probes by adopting a jumper wire technology, and the first balun (2a) in the-45-degree direction is normally printed.
6. The broadband dual-polarized dipole antenna loaded with frequency selective surface radiation stabilization according to claim 1, wherein: the radiator structure comprises two +/-45-degree orthogonally-placed dipole patches (1) of a first dipole (1a) and a second dipole (1b), wherein the first dipole (1a) and the second dipole (1b) are composed of two dipole arms, the first dipole (1a) and the second dipole (1b) respectively comprise two square ring patches (9) with the same shape and size, triangular cut angles (10) are arranged at four corners of each square ring patch (9), the first dipole (1a) is crossed with the second dipole (1b), and the first dipole (1a) and the second dipole (1b) are placed in + 45-degree positions and are symmetrical left and right.
7. The broadband dual-polarized dipole antenna loaded with frequency selective surface radiation stabilization according to claim 1, wherein: the frequency selection surface (6) comprises nine metal sheets (8) which are arranged in a 3 x 3 array, the shape and the size of each metal sheet (8) are the same, and a rectangular groove (6a) is formed in the center metal sheet (8).
8. The broadband dual-polarized dipole antenna loaded with frequency selective surface radiation stabilization according to claim 1, wherein: the dipole patch (1) is composed of square ring patches (9), and is used for increasing a current path and widening bandwidth by arranging three right-angle edges of each square ring patch (9) to cut triangular chamfers (10) with the same size and another right-angle edge to cut triangular chamfers (10) with different sizes.
9. The broadband dual-polarized dipole antenna loaded with frequency selective surface radiation stabilization according to claim 1, wherein: and the upper surface of the bottom layer dielectric substrate (5) is printed with a frequency selection surface (6) for compensating the gain of a high frequency band on the premise of keeping the integral height of the antenna and realizing the radiation stability of the whole passband.
10. The broadband dual-polarized dipole antenna loaded with frequency selective surface radiation stabilization according to claim 1, wherein: the lower surface of the bottom layer medium substrate (5) is printed with a floor (7), and the floor (7) is provided with two ground grooves (7a) for the first coaxial cable (3a) and the first port (31) of the antenna to penetrate through.
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| CN202210743106.5A CN114976665B (en) | 2022-06-27 | 2022-06-27 | Broadband dual-polarized dipole antenna loaded with stable frequency selective surface radiation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115313028A (en) * | 2022-08-17 | 2022-11-08 | 深圳市飞宇信科技有限公司 | Ultra-wideband antenna applied to 2G/3G/4G/5G frequency band |
| CN115441204A (en) * | 2022-10-19 | 2022-12-06 | 中国人民解放军国防科技大学 | Ultra-wideband energy selection antenna |
| CN116487885A (en) * | 2023-06-21 | 2023-07-25 | 西南科技大学 | Double-notch dual-polarized base station antenna with composite structure |
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| CN107275775A (en) * | 2017-06-23 | 2017-10-20 | 西安电子科技大学 | Ultra wide band array antenna |
| CN108539383A (en) * | 2018-05-24 | 2018-09-14 | 南京澳博阳射频技术有限公司 | Multifrequency antenna for base station and antenna-feeder system |
| CN112688052A (en) * | 2019-10-18 | 2021-04-20 | 华为技术有限公司 | Common-aperture antenna and communication equipment |
| CN112864617A (en) * | 2021-01-12 | 2021-05-28 | 西安电子科技大学 | 5G millimeter wave dual-polarized broadband wide-angle tightly-coupled array antenna |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115313028A (en) * | 2022-08-17 | 2022-11-08 | 深圳市飞宇信科技有限公司 | Ultra-wideband antenna applied to 2G/3G/4G/5G frequency band |
| CN115313028B (en) * | 2022-08-17 | 2023-09-01 | 深圳市飞宇信电子有限公司 | Ultra-wideband antenna applied to 2G/3G/4G/5G frequency bands |
| CN115441204A (en) * | 2022-10-19 | 2022-12-06 | 中国人民解放军国防科技大学 | Ultra-wideband energy selection antenna |
| CN115441204B (en) * | 2022-10-19 | 2024-05-24 | 中国人民解放军国防科技大学 | Ultra-wideband energy selection antenna |
| WO2024145734A1 (en) * | 2023-01-03 | 2024-07-11 | Commscope Technologies Llc | Radiating elements having feed stalks with frequency selective surfaces and base station antennas including such radiating elements |
| CN116487885A (en) * | 2023-06-21 | 2023-07-25 | 西南科技大学 | Double-notch dual-polarized base station antenna with composite structure |
| CN116487885B (en) * | 2023-06-21 | 2023-08-25 | 西南科技大学 | Double-notch dual-polarized base station antenna with composite structure |
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| CN114976665B (en) | 2023-04-11 |
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