Evaluation of Patch Antennas for Radar Systems in Ultra-Wideband Channel 9

This study provides a comprehensive performance analysis of UWB radar patch antennas tailored for Channel 9 applications. The initial antenna consists of a single microstrip patch, while the second comprises a board with six microstrip patches configured in a $\mathbf{3}\times \mathbf{2}$ matrix. The antennas are fabricated using standard FR4 laminate and are aimed for radar use. These antennas exhibit a directional radiation pattern with a broad beamwidth in the azimuth plane, making them ideal for radar systems.