文中给出了宽频带线性相位多模圆阵测向技术中天线馈电网络(Butler 矩阵)的网络扩阵设计方法和实际矩阵电路研制中应注意的一些技术细节。提出了单向矩阵扩阵设计方法,使扩阵设计过程简单明了,给出的高阶圆阵测向矩阵所含微波微分移相器数量、种类及相移量较传统方法显著减少,有利于提高实际矩阵的幅相精度,降低矩阵的插入损耗。文中也介绍了提高矩阵部件耦合带状线正交电桥、功分器、微分移相器等微波元器件性能的一些方法以及实际矩阵电路设计装配调试方面应注意的一些问题。

A new design of butler matrix network, deployed in wideband multi-mode in phase linear circular array for DF, and the implementation of its circuits are described in this paper. The new design of mono-directional matrix expansion proposed in this paper based on engineering efforts makes the procedures of matrix expansion more simple, due to the number and types of differential phase shifter needed in the new one and the amount of phase shift are sharply reduced than that in the traditional ones, resulting in a high amplitude-phase accuracy and lower inserting loss. Some good solutions to improve the performances of microwave components such as 90°hybrid with coupled strip line, power divider, differential phase shifters in full network configuration are also presented in this paper. Finally, the technical details that should be mentioned during the time to debug the circuits of Butler matrix is also given.