基于ADS设计平行耦合微带线带通滤波器

探讨频率对微带线带通滤波器的影响．通过分析平行耦合微带线带通滤波器的电路结构．提出了一种消除滤波器带宽偏离指定设计带宽和在截止频率附近缓和通带内电压驻波比波动过大的方法．在此基础上阐述了设计平行耦合微带线带通滤波器的流程以及相关参数的计算方法．最后基于ADS给出一个中心频率为10GHz的滤波器的设计实例及其仿真分析结果．验证了此方法的正确性和可行性．

Design of Parallel Coupled Microstrip Bandpass Filter With ADS

In order to study the influence of frequence on microstrip bandpass filter, the circuit structure of the parallel coupled microstrip bandpass filter is analyzed, and a method that both can prevent the bandwidth of the filter deflected from appointing bandwidth and abate the VSWR by stop frequency is presented. Based on it, the flow of designing parallel coupled microstrip bandpass filter and the approach of obtaining the corresponding coefficients is described. At last, a design example that based on ADS and simulated results for a parallel coupled microstrip bandpass filter with frequency in 10 GHz are given. Experiments show that the proposed method is reasonable and efficacious.