High-gain slot antenna based on graphene three-dimensional phase tunable lens and method

Abstract

The invention discloses a high-gain slot antenna based on a graphene three-dimensional phase tunable lens and a method. The antenna adopts the graphene three-dimensional phase tunable lens, and the graphene three-dimensional phase tunable lens is placed at the front end of the slot antenna, so that the slot antenna can tune the lens unit through the reconfigurable characteristic of graphene under different bias voltages. Different bias voltages can change the surface resistance of the graphene material, so that the characteristics of the lens can be changed, the energy and phase distribution in the aperture of the slot antenna can be changed, the gain of the antenna can be improved, and the directional diagram distortion of the antenna can be eliminated. Meanwhile, the lens-loaded slot antenna is a novel mixed graphene-metal structure slot antenna, and a radiation slot structure of the antenna is replaced by a graphene structure, so that control of energy in the aperture of the antenna is further enhanced, and the frequency reconfigurable characteristic is brought to the slot antenna.

Description

technical field [0001] The invention belongs to the field of terahertz antennas, and relates to a high-gain slot antenna and a method based on a graphene three-dimensional phase-tunable lens. Background technique [0002] In practical application scenarios such as large-scale electronic countermeasures, large-capacity data transmission, and high-resolution remote sensing, the demand for microwave frequency systems operating at ultra-wideband is increasing. High-gain, broadband antennas are an important part of such microwave systems. [0003] Since Gibson first proposed the Vivaldi antenna, it has been widely used because of its simple structure, low manufacturing cost, and wide bandwidth. However, the Vivaldi antenna suffers from several fundamental problems that limit its practical application. One of the most obvious problems is the reduction in the actual operating frequency bandwidth of the Vivaldi antenna. Specifically, both the gain bandwidth and the mode bandwidth...

AI Technical Summary

Problems solved by technology

[0004] For the Vivaldi antenna, it is difficult to adjust the electromagnetic wave over the entire return loss bandwidth because the amplitude and phase distribution of the antenna's radiated field within the aperture is variable with frequency

So far, there is no effective way to simultaneously extend the radiation gain bandwidth and mode bandwidth

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