Transmission Zeros in Filter DesignTransmission Zeros in Filter DesignBy Randall W. Rhea Eagleware Corporationore economic and effective bandpass filters can be designed by controlling the location of transmission zeros. What do we mean by transmission zeros? Consider the fifth-order lowpass filter in Figure 1(a). There is little attenuation at low frequencies and increasing attenuation above the cutoff. Only at infinite frequency is there no transmission. In fact, at infinite frequency, each inductor becomes an open and each capacitor becomes a short. This filter has five transmission zeros (TZs) at infinite frequency. The fifth order highpass filter in Figure 1(b) has five TZs at DC. It is essential that the inductors and capacitors alternate. If we were to attempt to build a fifth-order lowpass with five series inducto……
猜您喜欢
推荐内容
开源项目推荐 更多
热门活动
热门器件
用户搜过
随便看看
热门下载
热门文章
热门标签
评论