A HIGH-DIRECTIVE BOWTIE RADAR ANTENNA WITH A PYRAMIDAL REFLECTOR FOR ULTRA WIDEBAND RADAR IMAGING APPLICATIONS

摘要

We propose a novel bowtie radar antenna with a pyramidal reflector, which shows low return loss and high directional gain, capable of covering the whole ultra wideband (UWB) frequency band. The measured return loss is less than -10 dB over 3.0-11.7 GHz, and the radiation pattern is unidirectional with a high front-to-back ratio for UWB radar imaging applications.