矩形波导缝隙阵列天线的快速综合算法

A fast synthesis algorithm for rectangular slotted waveguide arrays

矩形波导缝隙阵列天线计算复杂,本文提出一种快速综合算法,充分考虑互耦的影响,并且可以对同相或不同相缝隙电压加权进行综合.首先在有源导纳法的基础上得出一个矩阵方程,互耦的影响和缝隙自身的影响分别可以用方程中的一个矩阵完全表示.分析矩阵的特性后,本文可将对面阵的综合转换为对每条波导上缝隙的综合,大大降低计算量.仿真实例验证了算法的有效性.

Rectangular slotted waveguide antenna arrays are difficult to design. A fast synthesis algorithm is proposed by taking full consideration of the mutual coupling effects,which is suitable for equiphase and out-of-phase slot voltages. First,a matrix equation is deduced from the original active admittance method,where two matrices can fully represent the mutual coupling effects and the effects of the slots themselves. After studying the characteristics of the two matrices,we are able to transfer the synthesis of a planar array to the synthesis of each individual waveguide,which can greatly reduce the computation time. Simulation results of the antenna arrays demonstrate the effectiveness of the proposed algorithm.