摘要
针对现有椭圆滤波器多采用查对曲线方法设计电路参数导致的滤波性能不佳,调试困难等问题[1],设计了一种新型椭圆低通滤波器。该滤波器采用高电位和地之间嫁接复电抗的方法设计电路,按照基于四端网络的分析方法获得滤波电路的传递函数。具有设计方法简单,调试方便,电路参数精确,电路稳定可靠,截止频率易于调节,并能获得较高的滤波技术指标的特点。实际应用结果表明,滤波器滤波效果较好,满足设计要求。
Aiming at the problems of the bad filter performance and the hard debugging of the existed low- pass elliptic filters, which are caused by the method of consulting existed curves in designing a circuit, a new low-pass elliptic filter is designed. The realized method is b3） the way of grafting a reactance between the high and low electronic potential. And the transfer function can be gained by the four-pole network analysis method. This filter has a simple realized method, accurate circuit parameters, a stable and reliable quality, a higher filter technical ratio and its cut-off frequency is easy to be adjusted. The practical applications show that the filter has a good filter performance and can meet the desired requirements.
出处
《电子器件》
CAS
2008年第4期1265-1267,1272,共4页
Chinese Journal of Electron Devices
