基于ADS的平行耦合带通滤波器的设计  

Design of Parallel Coupled Band-pass Filter Based on ADS

作　　者：陈黎[1] 吴孟强[1] 肖勇[1] 张树人[1] 

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,四川成都610054

出　　处：《压电与声光》2012年第3期483-486,共4页Piezoelectrics & Acoustooptics

基　　金：四川省青年基金资助项目(JS0303001)

摘　　要：介绍了一种设计平行耦合带通滤波器的方法,通过ADS软件设计,优化了中心频率为1.0GHz、带宽为100MHz的带通滤波器。针对ADS电路仿真中很多寄生和耦合因素均被忽略而导致很大误差的情况,借助momentum-2.5D对滤波器模型进行多维电磁仿真,优化滤波器的结构参数,然后用性能良好的陶瓷基板加工出滤波器实物。实物测试结果和仿真设计吻合较好。最后得到的滤波器具有良好的端口反射特性。通带衰减小于2dB,端口反射系数小于-20dB;阻带衰减大于40dB,达到了技术指标的要求。A way of designing the parallel coupled microstrip band-pass filter has been presented. The filter with the center frequency of 1.0 GHz and band-pass 100 MHz has been designed and simulated by using the software ADS. Since the parasitic and coupling factors are neglected in the ADS circuit simulation and resulted in great errors, the momentum-2.5D is used to simulate the filter model multi-dimensionally and the structure parameters of the fil- ter have been optimized. The ceramic substrate with good performance has been used to fabricate a physical filter. The test results agree well with the simulation and design results as well as the design specifications. The filter has good reflection characteristics of the ports,the pass-band attenuation is less than 2 dB; the port reflection coefficient is less than --20 dB;and the stop-band attenuation is more than 40 dE that meet the requirements of the technical specifications.

关 键 词：微带线 平行耦合 ADS仿真 带通滤波器 电磁仿真 

分 类 号：TN713[电子电信—电路与系统]