Dual-circular-polarization Vivaldi antenna with broad beamwidth and wide bandwidth

摘要

An UWB Vivaldi antenna with broad beamwidth is investigated. The analysis explains the design of the parameters that decide the characteristic and puts forward the idea of combining two congruent two-element antenna arrays, which requires the integration with both 3dB power divider and directional coupler in the whole antenna structure. The antenna has been designed and optimized to cover S/C band (2-6GHz) and accomplish the right-hand circular polarization and left-hand circular polarization synchronously.