Antenne metasurface {\`a} polarisation circulaire

TL;DR

This paper introduces a novel scalar metasurface design method for linearly polarized antennas using phase-matching of circular polarizations, achieving reduced side lobes and symmetric main lobes, validated by numerical and experimental results.

Contribution

It presents a new scalar metasurface approach employing phase-matching of circular polarizations for improved antenna performance.

Findings

Reduced side lobe levels achieved

Main lobe symmetry maintained regardless of pointing direction

Numerical and measurement results confirm effectiveness

Abstract

A new approach using scalar metasurfaces for the design of linearly polarized antennas is presented. The proposed method is based on the construction of the surface impedance Zs using a technique called "phase-matching," which employs the sum of two circular polarizations in phase opposition. This process allows for the achievement of good performance of the synthesized antenna, such as the reduction of side lobe levels and the attainment of an almost symmetric main lobe regardless of the pointing direction. Numerical and measurement results are also presented.