开路边缘平行耦合微带带通滤波器的设计  

Design of open-circuit edge parallel coupled microstrip band-pass filter

作　　者：张金[1] 廖同庆[1] 沈国浩[1,2] 陈新民[1] 

机构地区：[1]安徽大学计算智能与信号处理教育部重点实验室,合肥230039 [2]蚌埠学院,蚌埠233000

出　　处：《电子测试》2011年第5期85-88,109,共5页Electronic Test

摘　　要：本文首先对开路边缘平行耦合微带带通滤波器的滤波特性进行了分析,接着使用微波仿真软件ADS对其进行了仿真。仿真时根据设计指标用ADS的优化功能对原理图进行多次优化,优化时注重对多个参数实行逐个优化,使得优化的速度更快。通过对一中心频率为3.05GHz带宽为3.3%的带通滤波器进行仿真,结果很好地满足设计指标。基于ADS优化设计的滤波器克服了耦合微带滤波器的带宽偏离指定带宽和通带损耗过大的缺点。使用ADS软件设计还可以避免传统设计过程的繁琐,需多次进行实验测试,耗费原材料等缺点。This paper analyses the filtering characteristic of an open-circuit edge parallel coupled microstrip band-pass filter,and then the filter is simulated by ADS.The filter’s schematic can be optimized many times in ADS.Parameters need be optimized one by one,which make the optimization’s speed more fast .A band-pass filter with the center frequency of 3.05GHz and bandwidth of 3.3% is optimized,whose conclusion meet the design index well.Several problems in conventional design means can be solved by ADS.Such as,coupled microstrip filter’s bandwidth departure the target’s easily,lose too much in the band-pass area,need too many experiments and waste lots of raw materials.

关 键 词：微带带通滤波器 边缘平行耦合 ADS 

分 类 号：TN713.5[电子电信—电路与系统]