改进型超宽带Vivaldi天线设计与仿真

摘要

在传统Vivaldi天线结构的基础上,设计了两种适用于宽带信号收发系统的改进型渐变槽Vivaldi天线以及同轴馈电型对踵Vivaldi天线,并利用电磁仿真软件HFSS对这两种Vivaldi天线的性能进行优化分析.通过对不同结构Vivaldi天线的对比分析结果可以看出改进型渐变槽Vivaldi天线和同轴馈电型对踵Vivaldi天线在频段、带宽、驻波比等方面均达到宽带传输系统的设计要求.%Based on the full research of the traditional Vivaldi antenna characteristics, a tapered slot Vivaldi antenna with impedance transformer and a coaxial-fed antipodal Vivaldi antenna are designed for wideband communication. Antennas performance are analyzed and optimized by using of 3D electromagnetic simulation software HFSS. From the simulation results it is concluded that the working frequency, bandwidth and VSWR performance of the proposed Vivaldi antennas achieved the design targets of the ultra-wideband communication system.