摘要
针对传统全波电磁仿真工具耗费的时间成本和硬件资源高、电路仿真软件无法保证设计精度的问题,提出一种基于空间映射法的微带滤波器设计方法。首先使用电路仿真软件建立滤波器模型,优化电路模型,快速得到电路模型理想值;然后通过全波仿真软件建立相应模型,仿真得到响应结果,将该结果代入电路模型中,通过建立误差函数优化电路模型,使其响应接近于全波仿真响应,通过对比此时的电路模型与理想电路模型,推断得到全波仿真模型的优化方向。此方法无需扫参,大大减少了全波仿真次数,快速得到全波仿真模型最优解。利用该方法设计一款X频段微带滤波器,实测通带内插损小于1 dB,回波损耗小于-14 dB,进而验证了该方法的有效性。
Conventional full-wave electromagnetic simulation tools consume high time cost and hardware resources,and the circuit simulation software cannot guarantee the design accuracy.In light of this,a microstrip filter is designed based on the space mapping.Firstly,the filter model is built via the circuit simulation software,and the circuit model is optimized to obtain the ideal value quickly,then the corresponding model is established via the full-wave simulation software,the response result is obtained through the simulation and substituted into the circuit model,and the circuit model is optimized by establishing the error function,making its response close to that of the full-wave simulation response.Finally,the optimization direction of the full-wave simulation model is deduced by comparing the circuit model and the ideal circuit model.The method greatly reduces the number of full-wave simulations without sweeping the parameters,and the optimal solution of the full-wave simulation model is obtained quickly.An X-band microstrip filter is designed by using the method,and the measured insertion loss in the passband is less than 1dB and the return loss is less than-14dB,verifying the effectiveness of the method.
作者
李平宇
臧恒
王康
LI Ping-yu;ZANG Heng;WANG Kang(The Eighth Research Academy of CSSC,Nanjing 211153)
出处
《雷达与对抗》
2023年第4期32-35,48,共5页
Radar & ECM
