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A Low Profile Dual Port High Isolation Dual Circularly Polarized Antenna Array

An antenna array and dual circular polarization technology, which is applied in the directions of antenna arrays, antennas, and slot antennas that are energized separately, can solve the problems of low aperture efficiency, separation of transceiver units, etc., and achieve high port isolation

Active Publication Date: 2022-05-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] The document "Single Layer, Differentially Driven, LHCP Antenna With Improved Isolation for Full Duplex Wireless Applications (Hao Nawaz, Ahmad Umar Nizai, IEEE ACESS, 2019: 2954947)" discloses a single layer dual circularly polarized antenna. The corners achieve circular polarization, but the transceiver unit is separated, so the aperture efficiency is low

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  • A Low Profile Dual Port High Isolation Dual Circularly Polarized Antenna Array
  • A Low Profile Dual Port High Isolation Dual Circularly Polarized Antenna Array
  • A Low Profile Dual Port High Isolation Dual Circularly Polarized Antenna Array

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] This embodiment provides a low-profile dual-port high-isolation dual circularly polarized antenna array, and its structural schematic diagram is as follows Figure 4 As shown, it includes four radiating elements, a dielectric substrate, a feed network and a metal floor; the four radiating elements and the feed network are located on the upper surface of the dielectric substrate; the metal floor is located on the lower surface of the dielectric substrate, and the metal floor covers the dielectric substrate Surface; The relative permittivity of the dielectric substrate is 2.65 and the thickness is 0.8mm.

[0032] The schematic diagram of the radiation unit is shown in figure 1 As shown, it includes a square microstrip patch with cut corners and a feeder line; the angle between the side of the square microstrip patch and the horizontal direction is...

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Abstract

The invention discloses a low-profile dual-port high-isolation dual-circularly polarized antenna array, which belongs to the technical field of microwave antennas. The present invention is composed of four radiating units, which are distributed in an oblique cross shape, wherein every two radiating units are a group, and a differential feeding mode is adopted. Through the full-duplex feeding network, the solution provided by the present invention realizes the dual-port co-directional circular polarization, and at the same time, the port isolation is high, thereby realizing good transceiver isolation. The present invention can be used in satellite communication, civil communication system and other microwave communication systems.

Description

technical field [0001] The invention belongs to the technical field of microwave antennas, and in particular relates to a low-profile dual-port high-isolation dual circularly polarized antenna array. Background technique [0002] As a basic device for receiving and transmitting radio waves, antennas are an essential part of wireless communication systems. Circularly polarized antennas are usually used in vehicle communication systems, airborne and satellite communications. In recent years, due to the explosive growth of the demand for information and data exchange, how to realize simultaneous transmission and reception of information in a limited space has always been the goal of researchers. Although there are many solutions to achieve circularly polarized antennas with high port isolation, they often adopt multi-layer structures or the radiating elements transmit and receive independently, resulting in increased antenna volume, especially when the height of the antenna pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q13/10H01Q21/06
CPCH01Q21/06H01Q13/106
Inventor 李家林潘泽昊奉丽冰赵青
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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