半集总参数环形电桥设计

Design of Semi-lumped Parameter Rat-Race Bridge

本文利用集总电路模型 ,用微带高、低阻抗线实现环形电桥 ,组成 180°功分器 ,用于四线螺旋天线的激励。由于利用半集总参数设计思想 ,功分网络的尺寸减小了一半。

power divider is designed for feeding network of printed quadrifilar helical antenna. The design method utilizes combinations of short high-impedance transmission lines and short low-impedance transmission lines on the basis of lumped-parameter circuit of rat-race bridge. The size of the power divider network is 50 percent smaller than the conventional hybrids.