Experimental characterization of negative refractive index material NRM at Ka band

TL;DR

This paper presents an experimental study of a negative refractive index material at Ka band, using specific structures and a novel characterization procedure, demonstrating enhanced transmittance and negative refraction around 31 GHz.

Contribution

The paper introduces a new experimental method for characterizing negative refractive index materials at Ka band, focusing on design and measurement procedures.

Findings

Enhanced transmittance of over 20 dB at negative refraction angles

Negative refractive index around 31 GHz

Successful experimental validation of NRM at Ka band

Abstract

In this paper, we discuss the experimental characterization of a negative refractive material NRM at Ka band using LR labyrinth Ring and wire array WA. We describe in detail the the LR and wire array characterization separately, and after that the combined experimental results, for NRM are reported. The LRs analytical and simulation study is not new but design in Ka band and different experimental procedure for the characterization of the negative refractive index is the novelty of this paper. For performing a negative refractive index experiment we made prism of 150 Prism angle . We get enhanced transmittance of more than 20 dB from background, at a negative angle of refraction. The values of the negative refractive index in a band of about 1 G Hz around 31 GHz are retrieved from the experimental data.