CN116544668B - Dual-frequency common-caliber base station antenna loaded with super-surface structure - Google Patents
Dual-frequency common-caliber base station antenna loaded with super-surface structure Download PDFInfo
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- CN116544668B CN116544668B CN202310768038.2A CN202310768038A CN116544668B CN 116544668 B CN116544668 B CN 116544668B CN 202310768038 A CN202310768038 A CN 202310768038A CN 116544668 B CN116544668 B CN 116544668B
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 39
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 230000008878 coupling Effects 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims description 11
- 230000001808 coupling effect Effects 0.000 claims description 4
- 230000005855 radiation Effects 0.000 abstract description 15
- 238000004891 communication Methods 0.000 abstract description 5
- 238000005388 cross polarization Methods 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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Classifications
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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
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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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
- H01Q15/0053—Selective devices used as spatial filter or angular sidelobe filter
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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
- H01Q15/0086—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The application relates to a double-frequency common-caliber base station antenna loaded with a super-surface structure, which belongs to the technical field of communication and comprises a metal floor, wherein a high-frequency antenna is arranged at a position which is one quarter of high-frequency wavelength away from the metal floor, and the high-frequency antenna is connected with a first high-frequency feed port and a second high-frequency feed port through a Y-shaped coupling feed structure so as to realize the feed of the high-frequency antenna; a low-frequency antenna is arranged at a position which is one quarter of the low-frequency wavelength away from the metal floor, and is connected with a first low-frequency feed port and a second low-frequency feed port through a gamma-type balun feed structure, so that the feed of the low-frequency antenna is realized; and a square super-surface structure is arranged on the same horizontal plane of the low-frequency antenna, and the square super-surface structure completely covers the low-frequency antenna and the high-frequency antenna. The application improves the radiation performance of the high frequency band of the original base station antenna by utilizing the super-surface structure loaded at the same level as the low frequency antenna, and realizes high gain and higher cross polarization ratio.
Description
Technical Field
The application relates to the technical field of communication, in particular to a double-frequency common-caliber base station antenna loaded with a super-surface structure.
Background
The antenna is an essential component in a communication system, and its performance plays a decisive role in the quality of the entire communication system. In order to meet the huge demand of communication traffic, more base stations are paved on the original basis, the distance between each base station is reduced, and the purposes of larger coverage area and increased data capacity are achieved. With the advent of the 5G era, dual-band base station antennas have been developed in order to open up new frequency bands without wasting the conventional mobile communication frequency bands.
In order to save space, the dual-frequency base station antenna generally adopts a common caliber structure, and an array unit is formed by a low-frequency antenna and a plurality of high-frequency antennas together so as to achieve the purpose of miniaturization. In order to reduce multipath loss, a common dual-frequency base station antenna mainly adopts a cross polarization antenna as an array unit, and in a transceiving duplex mode, two pairs of antennas with mutually orthogonal polarization directions of +45 DEG and-45 DEG are utilized and work simultaneously, so that the number of base station antenna units is saved, and meanwhile, the effect of miniaturization of the whole base station antenna size is realized. The common cross polarization antenna generally adopts two electric dipoles to be placed in a crossed mode, and a resonance point is added through a gap formed between the two dipoles on the basis of the original dipole resonance point, so that the broadband is realized, and meanwhile, the requirement of high cross polarization ratio is met.
The current dual-frequency common-caliber base station antenna can be generally divided into a stacked structure, a nested structure and an interlaced structure. The stacked structure is to place a low frequency antenna with larger size at the bottom of the system, place a high frequency antenna at the upper end of the low frequency antenna, and load a frequency selection surface between the two to realize the efficiency of higher isolation. The nested structure is to design the low-frequency antenna into a bowl-shaped structure, and simultaneously, a high-frequency unit is placed in the center of the low-frequency antenna so as to achieve the nested effect, so that the low-frequency antenna has almost no shielding effect on the high-frequency antenna. Most of the double-frequency common calibers adopt a staggered structure, a high-frequency antenna is arranged below, a low-frequency antenna is arranged in the center of the array, and an electromagnetic transparent structure is loaded on a dipole arm of the low-frequency antenna, so that the shielding effect of the low-frequency antenna on the high-frequency antenna is reduced to the minimum.
However, the current common dual-frequency common-caliber base station antenna with the stacked structure has the problem that the section of the whole antenna system is high due to the fact that the low-frequency antenna is arranged below and the high-frequency antenna is arranged above the low-frequency antenna, and the trend of miniaturization of the modern base station is not satisfied. At present, the common nested structure dual-frequency common-caliber base station antenna is composed of a low-frequency antenna and a high-frequency antenna, so that the quantity of the high-frequency antennas is insufficient, the gain cannot meet the requirement, and meanwhile, the low-frequency antennas usually adopt an all-metal structure, are relatively difficult to manufacture and are not flexible compared with PCB printing. At present, a common staggered structure dual-frequency common-caliber base station antenna cannot completely eliminate the shielding effect of a low-frequency antenna on a high-frequency antenna because the low-frequency antenna is arranged above the high-frequency antenna, so that loss is brought to the gain of the high-frequency antenna, and meanwhile, the radiation performance of the high-frequency antenna during working can be deteriorated to a certain extent.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The application aims to overcome the defects of the prior art, provides a double-frequency common-caliber base station antenna loaded with a super-surface structure, and solves the defects of the existing double-frequency common-caliber base station antenna.
The aim of the application is achieved by the following technical scheme: a dual-frequency common-caliber base station antenna loaded with a super-surface structure comprises a metal floor, wherein a high-frequency antenna is arranged at a position which is a quarter of high-frequency wavelength away from the metal floor, the high-frequency antenna is connected with one end of a Y-shaped coupling feed structure, and the other end of the Y-shaped coupling feed structure is connected with the metal floor through a first high-frequency feed port and a second high-frequency feed port to realize feed of the high-frequency antenna;
a low-frequency antenna is arranged at a position which is one quarter of the low-frequency wavelength away from the metal floor, the low-frequency antenna is connected with one end of a gamma-type balun feed structure, and the other end of the gamma-type balun feed structure is connected with the metal floor through a first low-frequency feed port and a second low-frequency feed port so as to realize the feed of the low-frequency antenna;
and a square super-surface structure is arranged on the same horizontal plane of the low-frequency antenna, and the square super-surface structure completely covers the low-frequency antenna and the high-frequency antenna.
The high-frequency antenna comprises a plurality of high-frequency cross dipole units which are arranged in an array, each high-frequency cross dipole unit is fed to a first high-frequency feed port and a second high-frequency feed port on a metal floor through a Y-shaped coupling feed structure, and closed metal walls are arranged around the Y-shaped coupling feed structure.
And a plurality of spiral grooves are formed in the metal floors around the first high-frequency feed port and the second high-frequency feed port, and mutual coupling effect between the high-frequency antenna and the low-frequency antenna is reduced through the spiral grooves.
The high-frequency cross dipole unit consists of two high-frequency dipole antennas which are orthogonally placed, each high-frequency dipole antenna comprises two high-frequency antenna dipole arms, and the high-frequency dipole antennas are fed to a first high-frequency feed port or a second high-frequency feed port on the metal floor through a Y-shaped coupling feed structure.
The low-frequency antenna is a low-frequency cross dipole unit, the low-frequency cross dipole unit consists of two low-frequency dipole antennas which are orthogonally placed, and the low-frequency dipole antennas are fed to a first low-frequency feed port or a second low-frequency feed port on a metal floor through a reverse-T-shaped balun feed structure.
The low-frequency dipole antenna comprises two low-frequency antenna dipole arms, and a spiral line is loaded on the periphery of each low-frequency antenna dipole arm to serve as an inductor, so that a low-pass effect is achieved.
The super-surface structure comprises a PCB board shared by the super-surface structure and the low-frequency antenna, a plurality of square super-surfaces are arranged on the PCB board, and four square super-surfaces with central symmetry are arranged right above each high-frequency cross dipole unit to form a super-surface structure array.
The application has the following advantages: the dual-frequency common-caliber base station antenna loaded with the super-surface structure utilizes the super-surface structure loaded at the same level as the low-frequency antenna, improves the radiation performance of the high frequency band of the original base station antenna, and realizes high gain and higher cross polarization ratio; gaps between dipole arms and crossed dipoles of all the dual-polarized antennas respectively form a resonance point, and broadband directional radiation is formed through a matching structure; the spiral line with the inductance effect is loaded on the dipole arm of the low-frequency antenna, so that the low-pass effect is realized, and the scattering effect of the low-frequency antenna on high-frequency radiation is reduced; grooves in spiral line form are formed on a feed metal floor of the high-frequency antenna to reduce the mutual coupling effect between the low-frequency antenna and the high-frequency antenna and improve the radiation pattern of the low-frequency antenna; the design of the PCB substrate is used, the processing is more convenient, and the error is smaller.
Drawings
FIG. 1 is a schematic three-dimensional structure of the present application;
FIG. 2 is a top view of the present application;
FIG. 3 is a side view of the present application;
in the figure: 1-first high-frequency feed port, 2-second high-frequency feed port, 3-high-frequency cross dipole unit, 4-low-frequency cross dipole unit, 5-Y type coupling feed structure, 6-f type balun feed structure, 7-high-frequency dipole antenna, 8-low-frequency dipole antenna, 9-spiral slot, 10-metal wall, 11-super surface structure, 12-high-frequency antenna dipole arm, 13-low-frequency antenna dipole arm, 14-spiral line, 15-metal floor, 16-square super surface, 17-first low-frequency feed port, 18-second low-frequency feed port.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Accordingly, the following detailed description of the embodiments of the application, as presented in conjunction with the accompanying drawings, is not intended to limit the scope of the application as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present application. The application is further described below with reference to the accompanying drawings.
The application relates to a double-frequency common-caliber base station antenna loaded with a super-surface structure, which is characterized in that a low-frequency antenna is added above a 2 multiplied by 2 high-frequency array, and simultaneously the super-surface structure with enhanced gain and improved radiation performance is loaded on the same height of the low-frequency antenna. The performance of the whole array is improved on the premise of not changing the performance of the low-frequency antenna. The substrates used for the antennas were all FR4 material substrates, the metal material printed on the substrates was copper, the floor was an aluminum plate, and the feed was SMA (3.5 mm) with 50 ohm semi-rigid coaxial lines connected. The design frequency band of the antenna is low frequency (0.7 GHz-0.96 GHz) and high frequency (1.7 GHz-2.7 GHz).
As shown in fig. 1 and 2, it includes a metal floor 15, in order to achieve the purpose of expanding bandwidth, a high-frequency antenna is arranged at a position which is one quarter of the high-frequency wavelength from the metal floor 15, the high-frequency antenna is connected with one end of a Y-shaped coupling feed structure 5, the other end of the Y-shaped coupling feed structure 5 is connected with the metal floor 15 through a first high-frequency feed port 1 and a second high-frequency feed port 2, so as to realize the feed of the high-frequency antenna;
the high-frequency antenna comprises four high-frequency cross dipole units 3 which are arranged in an array, each high-frequency cross dipole unit 3 is fed to a first high-frequency feed port 1 and a second high-frequency feed port 2 on a metal floor 15 through a Y-shaped coupling feed structure 5, and closed metal walls 10 are arranged around the Y-shaped coupling feed structure 5.
A plurality of spiral grooves 9 are arranged on the metal floors 15 around the first high-frequency feed port 1 and the second high-frequency feed port 2, and mutual coupling effect between the high-frequency antenna and the low-frequency antenna is reduced through the spiral grooves 9.
The high-frequency cross dipole unit 3 is composed of two orthogonally placed high-frequency dipole antennas 7, each high-frequency dipole antenna 7 including two high-frequency antenna dipole arms 12, the high-frequency dipole antenna 7 being fed to the first high-frequency feed port 1 or the second high-frequency feed port 2 on the metal floor 15 through the Y-coupling feed structure 5. The omnidirectional pattern of the high frequency dipole antenna 7 is reflected as directional radiation towards the +z direction.
As shown in fig. 3, a low-frequency antenna is arranged at a position which is a quarter of the low-frequency wavelength away from the metal floor 15, the low-frequency antenna is connected with one end of a gamma-type balun feed structure 6, and the other end of the gamma-type balun feed structure 6 is connected with the metal floor 15 through a first low-frequency feed port 17 and a second low-frequency feed port 18 to realize the feed of the low-frequency antenna;
the square super surface structure 11 is arranged on the same horizontal plane of the low-frequency antenna, the size of the square super surface structure 11 completely covers the low-frequency antenna and the high-frequency antenna, the super surface structure 11 consists of a square super surface 16 and a PCB, the super surface structure 11 and the low-frequency antenna are printed on the same PCB and supported by the gamma balun feed structure 6, reflected waves of high-frequency radiation on the super surface structure 11 and scattered waves generated by the rest of the antenna system are mutually offset, a high-frequency radiation pattern which is originally influenced by scattered current is improved, and meanwhile, the radiation performance is improved.
Through printing super surface structure 11 and low frequency antenna on same PCB board cut the high frequency antenna of complete coverage below for every high frequency cross dipole unit 3 top has four central symmetry's super surface unit arrays, through adjusting the size with it with low frequency antenna to same height, can process on same board, can not make the structure processing troublesome, simultaneously because super surface structure 11's existence makes the gain of high frequency antenna, has promotion to a certain extent.
The low-frequency antenna is a low-frequency cross dipole unit 4, the low-frequency cross dipole unit 4 is composed of two low-frequency dipole antennas 8 which are orthogonally arranged, and the low-frequency dipole antennas 8 are fed to a metal floor 15 through a first low-frequency feed port 17 or a second low-frequency feed port 18 through a gamma-type balun feed structure 6.
The low-frequency dipole antenna 8 comprises two low-frequency antenna dipole arms 13, and a spiral line 14 is loaded on the periphery of each low-frequency antenna dipole arm 13 to serve as an inductor, so that a low-pass effect is realized, and the scattering influence of the low-frequency antenna is reduced to the minimum when the high-frequency antenna works.
Both the high frequency antenna and the low frequency antenna are disposed at a quarter wavelength position from the frequency of the metal floor 15 itself, and the high frequency antenna is lower from the ground because the center frequency of the high frequency antenna is higher and the wavelength is smaller. The center frequency of the low-frequency antenna is lower, the wavelength is longer, so the low-frequency antenna is high from the ground, and therefore, the quarter wavelength from the ground can utilize the reflection of the ground, if one mirror image antenna and the actual antenna are symmetrical relative to the ground, the difference between the mirror image antenna and the actual antenna is one half wavelength, but the mirror images of the transverse currents are reversed, so that the mirror images are overlapped in the same direction in the far field pattern, and the directional radiation is realized.
The metal floor 15 acts as a common floor for the high frequency and low frequency antennas and causes the maximum radiation direction to be oriented in the positive z-axis direction when the entire antenna array is in operation. The cross dipole functions to produce radiation in the z-direction of the antenna, forming orthogonal linearly polarized radiation. The dual-polarization dipole is excited by the gamma-balun feed structure 6 to two polarizations of the cross dipole, so that the impedance bandwidth of the dual-polarization dipole is improved.
The foregoing is merely a preferred embodiment of the application, and it is to be understood that the application is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the application are intended to be within the scope of the appended claims.
Claims (7)
1. A double-frequency common-caliber base station antenna loaded with a super-surface structure is characterized in that: the antenna comprises a metal floor (15), wherein a high-frequency antenna is arranged at a position which is a quarter of high-frequency wavelength away from the metal floor (15), the high-frequency antenna is connected with one end of a Y-shaped coupling feed structure (5), and the other end of the Y-shaped coupling feed structure (5) is connected with the metal floor (15) through a first high-frequency feed port (1) and a second high-frequency feed port (2) to realize the feed of the high-frequency antenna;
a low-frequency antenna is arranged at a position which is one quarter of the low-frequency wavelength away from the metal floor (15), the low-frequency antenna is connected with one end of a gamma-type balun feed structure (6), and the other end of the gamma-type balun feed structure (6) is connected with the metal floor (15) through a first low-frequency feed port (17) and a second low-frequency feed port (18) to realize the feed of the low-frequency antenna;
a square super-surface structure (11) is arranged on the same horizontal plane of the low-frequency antenna, and the square super-surface structure (11) completely covers the low-frequency antenna and the high-frequency antenna.
2. The dual-band co-aperture base station antenna of claim 1 wherein said dual-band co-aperture base station antenna is loaded with a super-surface structure, said dual-band co-aperture base station antenna being characterized by: the high-frequency antenna comprises a plurality of high-frequency cross dipole units (3) which are arranged in an array, each high-frequency cross dipole unit (3) is fed to a first high-frequency feed port (1) and a second high-frequency feed port (2) on a metal floor (15) through a Y-shaped coupling feed structure (5), and closed metal walls (10) are arranged around the Y-shaped coupling feed structure (5).
3. A dual-frequency co-aperture base station antenna loaded with a super-surface structure as claimed in claim 2, wherein: a plurality of spiral grooves (9) are formed in the metal floors (15) around the first high-frequency feed port (1) and the second high-frequency feed port (2), and mutual coupling effect between the high-frequency antenna and the low-frequency antenna is reduced through the spiral grooves (9).
4. A dual-frequency co-aperture base station antenna loaded with a super-surface structure as claimed in claim 2, wherein: the high-frequency cross dipole unit (3) is composed of two high-frequency dipole antennas (7) which are orthogonally placed, each high-frequency dipole antenna (7) comprises two high-frequency antenna dipole arms (12), and the high-frequency dipole antennas (7) are fed to a first high-frequency feed port (1) or a second high-frequency feed port (2) on a metal floor (15) through a Y-shaped coupling feed structure (5).
5. The dual-band co-aperture base station antenna of claim 1 wherein said dual-band co-aperture base station antenna is loaded with a super-surface structure, said dual-band co-aperture base station antenna being characterized by: the low-frequency antenna is a low-frequency cross dipole unit (4), the low-frequency cross dipole unit (4) is composed of two low-frequency dipole antennas (8) which are orthogonally arranged, and the low-frequency dipole antennas (8) are fed to a metal floor (15) through a first low-frequency feed port (17) or a second low-frequency feed port (18) through a gamma-type balun feed structure (6).
6. The ultra-surface structure loaded dual-frequency co-aperture base station antenna of claim 5, wherein: the low-frequency dipole antenna (8) comprises two low-frequency antenna dipole arms (13), and a spiral line (14) is loaded on the periphery of each low-frequency antenna dipole arm (13) to serve as an inductor, so that a low-pass effect is achieved.
7. A dual-frequency co-aperture base station antenna loaded with a super-surface structure as claimed in claim 2, wherein: the super-surface structure (11) comprises a PCB board shared by the low-frequency antenna, a plurality of square super-surfaces (16) are arranged on the PCB board, and four square super-surfaces (16) which are symmetrical in center are arranged right above each high-frequency cross dipole unit (3) to form a super-surface structure array.
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|---|---|---|---|
| CN202310768038.2A CN116544668B (en) | 2023-06-27 | 2023-06-27 | Dual-frequency common-caliber base station antenna loaded with super-surface structure |
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| CN202310768038.2A CN116544668B (en) | 2023-06-27 | 2023-06-27 | Dual-frequency common-caliber base station antenna loaded with super-surface structure |
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| CN116544668B true CN116544668B (en) | 2023-09-12 |
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| CN115173065A (en) * | 2022-08-26 | 2022-10-11 | 华南理工大学 | Multi-mode fused broadband dual-polarized base station antenna and communication equipment |
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| CN116073127A (en) * | 2023-04-07 | 2023-05-05 | 微网优联科技(成都)有限公司 | Super-surface loading base station antenna |
Non-Patent Citations (1)
| Title |
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| Dual_Polarized Antenna Array with Metasurface For Sub-6G Base Station Applications;Shuang Ji 等;《2020 International Conference on Microwave and Millimeter Wave Technology》;第1-3页 * |
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| CN116544668A (en) | 2023-08-04 |
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