空间映射算法优化电容加载梳状线宽带滤波器

Optimize Combline-like Wideband Bandpass Filter Using Space Mapping Algorithm

由于微波系统在数学上描述的复杂性,无论使用解析方法还是数值方法,直接计算其电磁特性都很困难,无法对调试进行有效指导,使得调试费时费力,也很难进行优化设计,而对各种非理想因素进行简化后的计算结果误差又太大,实际价值不高。因此,提出应用空间映射算法设计滤波器的方案。该算法在粗模型中优化,在细模型中验证,既保证了设计精度,又节省了大量时间,提高了滤波器设计的效率。最后,通过小型化电容加载梳状线宽带滤波器的设计,验证了该算法设计滤波器的有效性。

Due to its complexity in mathematicaldescription, it is very difficult to directly calculate the electromagnetic characteristics of microwave systems, regardless of analytical method or numerical method. Therefore, without effective guide, the debugging becomes time-consuming and very difficult to conduct. Andthe calculation error will be too large if we simplify all non-ideality factors, which makes poor practical significance. In this paper, space mapping algorithm is used to design filter, the algorithm is optimized in the coarse model and verified in the fine model, which not only ensure design accuracy, but also saves plenty of time to improve the efficiency of the filter design. Through the optimization of a miniaturizedcapacitor loaded comb-line filter, the effectiveness of the algorithm in filter design is verified.