All-metal metamaterial lens with near-field convergence function and unit arrangement design method thereof

Abstract

The invention discloses a phasor shift design method of an all-metal metamaterial lens with a near-field convergence function. Each unit comprises four metal layers (1) and three air layers (2), the four metal layers (1) and the three air layers (2) are arranged at intervals; each metal layer (1) comprises four rectangular metal gaps (4) and four square metal gaps (3), the four rectangular metal gaps (4) are respectively arranged at the side length positions of the metal layer (1), the four square metal gaps (3) are respectively arranged at four vertex angle positions of the metal layer (1); the rectangular metal gaps (4) and the square metal gaps (3) are arranged at intervals; each rectangular metal gap (4) extends inwards to form a central vertical line or a central transverse line; and each metal layer is of a central rotational symmetric structure. With the design method adopted, the problems of high temperature resistance and mechanical stability of the all-metal metamaterial lens are solved.

Description

technical field [0001] The invention belongs to the technical field of microwave device engineering, and in particular relates to an all-metal metamaterial lens with a near-field convergence function and a unit arrangement design method thereof. Background technique [0002] Microwave lenses are of great value in a variety of scenarios, including medical and satellite communications. In terms of medical treatment, the focusing lens can focus the electromagnetic beam, which has the characteristics of good directionality, high thermal efficiency, and high gain in the microwave hyperthermia of tumors; in terms of satellite communication, the microwave lens can receive multiple satellite signals, which greatly improves the performance of the antenna . However, traditional lenses have problems such as large volume and high cost. Therefore, metamaterial lenses with low profile, compact structure and low cost have been widely used. [0003] Existing metamaterial lenses are genera...

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