基于鳍线过渡的W波段低噪声放大器设计

摘要

This paper designs and implements a waveguide-to-microstrip finline transition at W band. Its insertion loss is less than 1.6dB and return loss is less than -12dB in the whole W band. Based on this finline transition, we design a W band low noise amplifier with the MMIC chip CGY2190UH. The gain of this LNA is more than 20dB in 80GHz~100GHz, and the gain flatness is less than 3dB.%对W波段鳍线过渡进行分析,设计并制作采用Spline曲线形式的鳍线过渡.在整个W波段,单个过渡结构插入损耗小于1.6dB,回波损耗小于-12dB,实现了良好的宽带性能.基于该鳍线过渡,设计一种 W波段低噪声放大器,芯片选用MMIC单片CGY2190UH,整机在80GHz~100GHz之间增益大于20dB,平坦度小于3dB.