Wave structure-based umbrella-like special-shaped ring single-sided left-handed material

Abstract

The invention relates to a wave structure-based umbrella-like special-shaped ring single-sided left-handed material and belongs to the left-handed material field. The wave structure-based umbrella-like special-shaped ring single-sided left-handed material is provided with a dielectric substrate of which one side is covered with a metal good conductor layer; an umbrella-like special-shaped ring of a wave structure is formed on the metal good conductor layer through etching; the upper part of the umbrella-like special-shaped ring of the wave structure is a half arc; the middle of the umbrella-like special-shaped ring is a wave structure which is perpendicular to the central symmetry axis of the umbrella-like special-shaped ring; the total length of the wave structure is equal to the sum of the diameter of the arc and the width of the arc; small gaps are left between the wave structure and the upper arc; the wave structure and the upper arc form the special-shaped ring; the central symmetry axis of the umbrella-like special-shaped ring of the wave structure is a straight metal rod; the straight metal rod perpendicularly passes through the wave structure through the arc top and extends to the bottom of the umbrella-like special-shaped ring so as to form the handle portion of the umbrella-like special-shaped ring; and the half arc is connected with the wave structure through the metal rod. The production process of the wave structure-based umbrella-like special-shaped ring single-sided left-handed material is very simple; the umbrella-like special-shaped ring single-sided structure has strong electrical resonance and magnetic resonance and is small in loss in double negative bands.

Description

technical field [0001] The invention relates to left-handed materials, in particular to a wave-shaped umbrella-shaped special-shaped ring single-sided left-handed material. Background technique [0002] Left-handed material (Left-Handed Material), also known as double negative material (Double Negative Material), compared with right-handed material, has its equivalent permittivity and equivalent permeability both negative in a certain frequency range. unique features. This idea was first proposed by the former Soviet physicist V.G.Veselago [1] , was later proved theoretically by researchers and synthesized in experiments. After the realization of left-handed materials has been recognized by the world, new problems have emerged. The materials proposed by Professor Smith and others have many shortcomings, such as large size of left-handed structural units, large loss, and narrow double negative bandwidth, which makes left-handed materials in the application has been greatly...

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