Multi-frequency single negative-permittivity metamaterial and preparation method thereof

Abstract

The invention provides a multi-frequency single negative-permittivity metamaterial and a preparation method thereof and belongs to the technical field of microwave electromagnetic materials. A substrate of the multi-frequency single negative-permittivity metamaterial is an epoxy resin PCB (printed circuit board) substrate, and a basic structure unit is a metal double-ring crisscrossed resonance structure based on stub connection. The preparation method includes: calculating an included angle between a straight line where a stub of the metal double-ring crisscrossed resonance structure is located and a channel through a negative-permittivity resonance frequency range to be regulated; and etching the metal double-ring crisscrossed resonance structure on one side of the epoxy resin PCB substrate by circuit etching technology. The preparation method of the multi-frequency single negative-permittivity metamaterial is simple and easy, frequency range of the multi-frequency single negative-permittivity metamaterial prepared by the preparation method is simple to adjust and stable in performance, and the multi-frequency single negative-permittivity metamaterial can be used for designing and researching multi-frequency negative refractive index metamaterial, multi-frequency band-pass / band-rejection filter, multi-frequency electromagnetic invisible materials, absorbing materials and the like.

Description

technical field [0001] The invention provides a multi-frequency single negative dielectric constant metamaterial and a preparation method thereof, belonging to the technical field of microwave electromagnetic materials. Background technique [0002] Metamaterials have many exotic properties different from conventional materials, such as negative magnetic permeability, negative permittivity and negative refractive index. It is precisely because of these singular properties and their great application prospects in the field of microwave electromagnetic materials technology that the research on metamaterials has become a hot spot in academia. Electromagnetic metamaterials have become a key research object in the fields of physics, materials science, electromagnetism, optics and interdisciplinary subjects, and have broad application prospects and important scientific significance. [0003] Pendry was the first to study periodic structure metamaterials. In 1996, he proposed to u...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the current single-negative permittivity metamaterial has single-frequency resonance and the working frequency band is not easy to control, the present invention provides a multi-frequency single-negative permittivity metamaterial and its preparation method. The material has the characteristics of simple frequency band adjustment, stable performance, and simple and easy preparation method. It can be used in the design and research of multi-frequency negative refractive index metamaterials, multi-frequency band-pass / band-stop filters, multi-frequency electromagnetic stealth materials and absorbing materials, etc.

Images