Two-dimensional matts-shaped left-handed material

Abstract

The invention discloses a two-dimensional matts-shaped left-handed material. The two-dimensional left-handed material is characterized by comprising unit structures formed by a dielectric substrate; the dielectric substrate is prepared from a Rogers plate material with the dielectric constant of 2-2.4 and the loss tangent value of 0.0009; the dielectric substrate is square, 3.2-3.5mm in length ofside, and 0.8mm in thickness; one side of the dielectric substrate is plated with matts-shaped plated copper; the matts-shaped structure adopts a central symmetrical structure, and openings are formedin the middle parts of the four edges of the matts-shaped structure respectively; the cross shape in the matts-shaped structure is formed by two rectangular copper plated structures in a crossed manner; the unit structures expand and extend in a three-dimensional direction to be connected mutually to form a matts-shaped structural array; the matts-shaped structural array is set into an ideal magnetic boundary condition PHC in an X-axis direction, and an ideal magnetic boundary condition PEC in a Y-axis direction; electromagnetic wave incidents in the Y-axis direction; the excitation mode is set into wave impedance excitation; and left-hand characteristics are achieved in the X-axis and Y-axis directions.

Description

technical field [0001] The invention relates to the field of metamaterials, in particular to a two-dimensional matt-shaped left-handed material. Background technique [0002] Veselago proposed the concept of left-handed materials in 1968, and pointed out that its permittivity and magnetic permeability are negative at the same time in a certain electromagnetic wave frequency band, and has many strange electromagnetic properties such as negative refraction, perfect lens effect, inverse Doppler effect, etc. . It is precisely because of these special electromagnetic properties that left-handed materials have extensive and important applications in the fields of optical imaging, antenna systems, microwave devices, and electromagnetic stealth. However, this theory was not realized for the first time by Smith in the form of a combination of metal wire and split resonator ring until thirty years later. Since then, the study of left-handed materials has embarked on a fast track of ...

AI Technical Summary

Problems solved by technology

However, the existing multidimensional left-handed materials often have problems such as complex structure, narrow bandwidth, large loss, and double-sided printing of circuit boards. Therefore, new multidimensional left-handed materials with excellent performance, simple structure, and easy processing have become an important research direction.

Images