波导缝隙阵列天线设计

根据等效磁流片法对矩形波导宽边纵缝阵面进行分析设计,采用拟牛顿法对阵面参数求解,设计中考虑了波导内、外互耦的影响,孤立缝的自导纳采用矩量法获得,计算中考虑壁厚。阵列单元的结构与参数采用孤立缝的精确分析结果,从而加快了迭代速度。以S波段2×4单元缝隙阵的阵面分析计算和设计制作为例,测试与仿真的天线特性符合良好。

The Design of the Longitudinal Slot Array of Waveguide's Wider Side

The longitudinal slot array of rectangular waveguide's wider side is analyzed and designed according to the equivalent magnetic current. The parameters of the array are obtained with the method of quasi-Newton, and the inner and external coupling coefficients are calculated and taken into account. Because the admittance of single slot is calculate with MOM, and the thickness of waveguide's wall is considered, the convergent rate is enhanced. As an example, an S-waveband slot array of 2×4 elements is designed, and the measured and simulated results are agreed well with each other.