Transmission array antenna unit with independently adjustable amplitude and phase and low reflection

Abstract

The invention discloses a low-reflection transmission array antenna unit with independently adjustable amplitude and phase applied to a microwave band. The unit mainly comprises a receiving antenna, an information processing layer and a transmitting antenna. The information processing layer utilizes the decomposition and superposition principle of electromagnetic waves to carry out phase conversion on the decomposed electromagnetic waves and then superpose the electromagnetic waves, so that transmission coefficients of any amplitude and phase can be realized, a large amount of parameter scanning and optimization are not needed, and the design process is simplified. The antenna has the advantages of low profile, low reflection, easy design, easy processing and the like, and can be used for realizing low-profile two-dimensional beam deflection, multi-beam emergent antennas and the like. In the future, hardware such as an FPGA can be combined to realize applications such as low-profile beam scanning and a novel millimeter wave wireless communication system.

Description

technical field [0001] The invention belongs to the field of antennas and novel artificial electromagnetic materials, and relates to the design of a novel transmission array antenna unit with independently adjustable amplitude and phase and low reflection. Background technique [0002] Electromagnetic metamaterials are some special arrangements of subwavelength microstructures, which can exhibit singular properties in a specific frequency range through artificial design. Metamaterials constructed through periodic or non-periodic arrangements can exhibit properties that conventional materials in nature do not have, such as negative refraction, inverse Doppler shift, and so on. The concept of metasurfaces is derived from metamaterials. It is a periodic array structure, and the resulting metasurface generally exhibits anisotropy. The characteristics of reflected or transmitted electromagnetic waves, such as phase, amplitude, polarization, and beam shape, can be adjusted by us...

AI Technical Summary

Problems solved by technology

Compared with other structural units, the receiving-transmitting unit has the advantage that adjustable electronic devices can be loaded on the transmission line or on the receiving and transmitting microstrip patches to achieve reconfigurable characteristics, but this unit also has narrow bandwidth, Disadvantages of low radiation efficiency

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