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CN-122026124-A - Transreflective integrated array antenna for realizing independent dual-polarized beam forming by adopting single-side excitation

CN122026124ACN 122026124 ACN122026124 ACN 122026124ACN-122026124-A

Abstract

The invention discloses a single-side excitation independent dual-polarized beam-formed transparent and reflective integrated array antenna which comprises a high-isolation dual-polarized feed source and a super surface. The feed source adopts orthogonal I-shaped slot coupling and double-layer orthogonal feed, and the port isolation is better than 50dB. The dual-polarized feed antenna is characterized in that the radiation patch is excited by orthogonal I-shaped slot coupling on the grounding plate, and the SMA side feed-through is coupled by orthogonal feed lines above and below the double-layer substrate. The super-surface reflection subsystem is an X-direction bow tie-shaped multilayer stack, and the transmission subsystem is a Y-direction elliptical multilayer stack. The antenna works in the X wave band, and the frequency bands of the two ports are 9.98-10.65GHz and 9.67-10.58GHz. Port 1 excites the reflection gain to 20.2dBi and port 2 excites the transmission gain to 20.3dBi. The antenna has the characteristics of high gain, independent dual polarization, reconfigurable different-direction beams, high isolation and flexible beam regulation and control, and is suitable for systems such as multi-beam communication, directional networking and the like.

Inventors

  • WANG TAO
  • ZHANG NAN
  • YIN DAWEI
  • LIU WENBO

Assignees

  • 西北民族大学

Dates

Publication Date
20260512
Application Date
20260209

Claims (9)

  1. 1. The antenna system comprises a dual-polarized slot coupling patch antenna, a trans-reflection integrated super-surface array antenna system (1), a radiation patch (2) taking F4B as a substrate, a double-layer orthogonal feed network (3) adopting orthogonal I-shaped slot coupling, a trans-reflection integrated super-surface (4), a super-surface periodic unit (5) and a 3D printing base (6) for installing the antenna system, wherein the super-surface array (4) is formed by arranging 13 super-surface periodic units (5) in rows and columns in an array mode, the radiation patch (2) is erected above the double-layer orthogonal feed network (3) through nylon screws, the radiation patch antenna and the trans-reflection integrated super-surface (4) are all arranged on the system (1) of the antenna system forming an integral antenna on the 3D printing base (6), each component of the antenna system is fixedly connected through an insulating white nylon screw column, the antenna structure stability is required to be met, the two SMA joints adopt a side sample machine mode, the double-layer orthogonal feed network and the antenna system can be applied to the antenna system to the wireless feed mode, and the antenna system can form a multi-directional feed mode, and the antenna system can be applied to the wireless feed mode.
  2. 2. The integrated array antenna for realizing independent dual-polarized beam forming by single-side excitation according to claim 1, wherein the radiation patch (2) with the base of F4B is a square copper patch, the length of the substrate corresponding to the radiation patch is 18mm, the width of the substrate is 18mm, and the thickness of the substrate is 0.762mm, the length of the square copper radiation patch is 11mm, the width of the square copper radiation patch is 11mm, the center of the radiation patch is a datum point (0 mm,2.508 mm), and four screw holes are symmetrically distributed in four corners of the substrate by taking coordinates in a first quadrant as an example, and the screw holes are respectively located at 7mm positions along the positive directions of an X axis and a Y axis of the datum point, so that the radiation patch is stably supported above a feed network.
  3. 3. The integrated array antenna for realizing independent dual-polarized beam forming through single-side excitation is characterized in that the feed antenna adopts an orthogonal I-shaped slot coupling structure and a double-layer orthogonal feed network (3), a substrate is a double-layer plate taking F4B as a substrate, fork-shaped feed microstrip lines are respectively arranged on a first layer and a fourth layer of the double-layer plate, a slot coupling ground plane is arranged on a second layer of the double-layer plate, a third layer is a copper-free layer and is used for substrate lamination, the lengths of the substrate and the ground plane are 50mm, the widths of the substrate and the ground plane are 50mm, the center of the orthogonal I-shaped slot is taken as a reference point, four screw holes around the slot are distributed in the same position as four screw holes (2) of an upper substrate, the screw hole coordinates in a first quadrant are taken as an example, the screw holes used for fixing the feed antenna are respectively arranged along the positive directions of an X axis and a Y axis by 20mm, the feed antenna is firmly fixed on a 3D printing substrate, the fork-shaped feed microstrip line comprises a main line segment and a bifurcation segment, the bifurcation segment is symmetrically distributed at the end part of the main line, the bifurcation segment is enhanced, the strength of the antenna is the antenna, and the electromagnetic excitation efficiency of the I-shaped slot coupling structure is improved.
  4. 4. The integrated array antenna for realizing independent dual-polarized beam forming by single-side excitation is characterized in that the integrated array antenna for realizing independent dual-polarized beam forming by transmission and reflection is characterized in that the integrated array antenna for realizing transmission and reflection (4) adopts a three-layer super-surface structure formed by superposing three F4B dielectric substrates, the thickness of the single-layer F4B dielectric substrate is 1.5mm, the total thickness of the super-surface is 4.5mm, the length is 153mm and the width is 153mm, the three-layer super-surface structure totally comprises six layers of lamination layers, wherein four layers are metal layers and are respectively arranged on a first layer, a second layer, a fourth layer and a sixth layer, the rest of the third layer and the fifth layer are copper-free lamination layers and are used for lamination fixation of all dielectric substrates, the metal layers are copper layers and the thickness is 35um, the integrated array for transmission and reflection is embedded into grooves correspondingly formed in a 3D printing base (6), firm support is realized, and the lamination layers of the super-surface structure is tightly laminated through lamination layers, and the flatness and the stable electromagnetic performance of the super-surface structure are ensured.
  5. 5. The integrated array antenna for realizing independent dual-polarized beam forming by single-side excitation according to claim 1, wherein the super-surface periodic unit structure (5) is conceptually decomposed into an X-polarized reflection subsystem and a Y-polarized transmission subsystem, the X-polarized reflection subsystem is composed of a bow-tie-shaped multilayer stack structure arranged along the X-axis, the bow-tie-shaped multilayer stack structure has strong resonance response to an X-polarized electric field, the Y-polarized transmission subsystem is composed of an elliptical multilayer stack structure arranged along the Y-axis, the period of the super-surface periodic unit is 11mm, the length of the bow-tie-shaped multilayer stack structure is 7.7mm, the width of the super-surface periodic unit is 5.15mm, the length of the long axis of the elliptical multilayer stack structure is 5.02mm, the super-surface periodic unit has a phase gradient characteristic, and the independent dual-polarized beam forming function is realized by configuring the bow-tie-shaped multilayer stack structure and the elliptical multilayer stack structure with different parameter specifications.
  6. 6. The integrated array antenna for realizing independent dual-polarized beam forming by single-side excitation is characterized in that a 3D printing base (6) for installing an antenna system is made of ABS, the 3D printing base (6) for installing the antenna system is made of ABS, the structure of the 3D printing base (6) comprises a vertical supporting part, a groove supporting arm and a bearing platform, corresponding dimensional parameters are that the height of the vertical supporting part is 66mm, the thickness is 55mm, the length of the groove supporting arm is 155mm, the thickness is 3mm, the length of the bearing platform is 160mm, the width is 164mm, the installation height of the bearing platform is 9mm, fixing screw holes on the 3D printing base (6) are distributed in the same position as screw holes corresponding to a super-surface array (4), a radiation patch (2) and a feed antenna, and the connection and fixation of all components and the base are realized through insulating white screw columns, and the mechanical stability and the installation flatness of the whole structure of the antenna system are ensured.
  7. 7. The integrated transflective array antenna for realizing independent dual-polarized beam forming by single-side excitation according to claim 1, wherein the antenna system is provided with two SMA joints, the SMA joints are distributed in a side feed mode and are respectively and correspondingly arranged beside fork-shaped feed microstrip lines of a double-layer orthogonal feed network, and the feed ends of the SMA joints are in contact connection with the end parts of the fork-shaped feed microstrip lines so as to realize single-side excitation of the feed antenna.
  8. 8. The integrated array antenna for realizing independent dual-polarized beam forming by single-side excitation according to claim 1, wherein the dual-polarized feed antenna works in an X-band, two dual-polarized ports of the antenna system respectively correspond to working frequency bands 9.98 GHz~10.65 GHz and 9.67 GHz~10.58 GHz, and the isolation between the two ports is better than 50 dB.
  9. 9. The integrated array antenna for realizing independent dual-polarized beam forming by adopting single-side excitation according to claim 1, wherein the maximum gain of a reflected beam of the antenna is 20.2 dBi when the antenna port 1 is excited and the maximum gain of a transmitted beam of the antenna is 20.3 dBi when the antenna port 2 is excited, the antenna has the characteristics of high gain, dual-polarization independent operation and different-directional beam reconstruction, and has excellent polarization isolation and flexible beam regulation and control, and can be used as one of ideal candidate antennas in wireless communication systems such as multi-beam communication, directional networking and the like.

Description

Transreflective integrated array antenna for realizing independent dual-polarized beam forming by adopting single-side excitation Technical Field The invention belongs to the technical field of antennas, and particularly relates to a transflective integrated array antenna for realizing independent dual-polarized beam forming by adopting single-side excitation Background The antenna is the final device of the transmitting end and the primary device of the receiving end in the wireless communication system and bears the function of energy conversion between the guided wave and the space electromagnetic wave With the rapid development of mobile communication, satellite communication and other technologies, the system has increasingly stringent requirements on antenna performance In this context, the antenna reconfigurable technology has been developed, and the key parameters of the antenna can be dynamically adjusted through smart design, which is important for simplifying the system architecture and controlling the overall cost. The super surface is a two-dimensional artificial electromagnetic material composed of sub-wavelength units, and is paid attention to due to its strong electromagnetic wave regulation capability The concept of reconfigurable antennas was proposed to reduce the number of antennas in order to meet different communication requirements, and has been studied and widely used. The reconfigurable antenna aims at changing certain radiation characteristics of the antenna according to application scenes and application requirements by changing physical characteristic parameters of the antenna The beam reconfigurable antenna can meet the communication space diversity requirement, and the maximum radiation direction of the antenna, namely the main lobe direction of the directional diagram, is changed under the condition that the working frequency of the antenna is kept unchanged. Compared with an omni-directional antenna, the signal radiation or receiving quality in a designated direction can be improved, and unnecessary energy radiation is reduced. The flexibility of the communication system can be increased compared to directional radiating antennas without increasing the number of antennas. Compared with phased array antenna, can avoid huge antenna array and complicated feed system, and can greatly reduce cost of communication system Document MECHANICALLY PATTERN reconfigurable antenna using metasurface describes that the beam direction of the antenna can be continuously changed by rotating a semicircular super surface around the center of the patch antenna, but the maximum gain of the antenna is only 7.2 dBi, which cannot meet the performance requirements of modern communication Document Coding metamaterials, DIGITAL METAMATERIALS AND programmable metamaterials discloses a Field Programmable Gate Array (FPGA) diode for generating a '0' or '1' response, controlling digital metamaterial and realizing programmable metamaterial, but the core hardware cost is high, and the circuit integration difficulty is high Therefore, with the above technical background and the literature description, the present invention aims to provide a transflective integrated array antenna for realizing independent dual-polarized beam forming by adopting single-side excitation Disclosure of Invention Aiming at the specific requirements of the wireless communication system and the microwave wireless energy transmission field on an antenna, the invention aims to provide a transparent and reflective integrated array antenna for realizing independent dual-polarized beam forming by adopting single-side excitation. The system feed adopts orthogonal I-shaped slot coupling and a double-layer orthogonal feed network, realizes excellent performance in an operating frequency band, has port isolation higher than 50 dB, and provides pure dual-polarized excitation for a super surface In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: A transparent and reflective integrated array antenna for realizing independent dual-polarized beam forming by single-side excitation consists of a dual-polarized feed antenna with high performance and high isolation and a transparent and reflective super-surface capable of realizing polarization decoupling at a unit level. The super surface can identify the polarization state of incident wave, perform efficient reflection phase regulation on x-polarized wave, and perform efficient transmission phase regulation on orthogonal y-polarized wave Furthermore, the dual-polarized feed antenna has the advantages that electromagnetic coupling excitation is realized by the radiation patch through the orthogonal I-shaped slots on the indirect floor in the substrate, the two orthogonal I-shaped slots respectively form precise coupling with the orthogonal feeder lines above and below the double-layer substrate, energy can be efficiently excited to the uppermost radiation