Automatic Measurement Technique of Electromagnetic Rotation in a Nonreciprocal Medium

TL;DR

This paper presents an automated measurement method for electromagnetic polarization rotation in nonreciprocal media, utilizing a scattering matrix approach and validated with a tunable metamaterial, offering improved accuracy over traditional techniques.

Contribution

It introduces a novel automated test bench procedure based on scattering matrix analysis for measuring polarization rotation in nonreciprocal media.

Findings

The proposed method accurately measures polarization rotation.

Validation shows improved precision over conventional techniques.

Effective for electronically tunable nonreciprocal metamaterials.

Abstract

This article aims at developing a simple, automated test bench procedure to measure polarization rotation of an electromagnetic wave upon propagation through a nonreciprocal medium. A comprehensive measurement approach is developed from the scattering matrix. The proposed measurement procedure is demonstrated using an electronically tunable nonreciprocal metamaterial, and the accuracy of the proposed method is compared with the well-accepted conventional measurement technique.