一种新颖的高阶CMOSOTA-C高通滤波器的设计方法  

A Novel Design Method for High-order CMOS OTA-C Highpass Filter

作　　者：王春华[1] 段福长[2] 

机构地区：[1]湘潭大学自动化与电子工程系,湘潭411105 [2]湘潭大学产业处

出　　处：《湘潭大学自然科学学报》1999年第3期92-96,共5页Natural Science Journal of Xiangtan University

基　　金：湖南省教委资助项目

摘　　要：提出了一种新颖的高阶 Ｏ Ｔ Ａ－ Ｃ 高通滤波器的设计方法：使用 Ｏ Ｔ Ａ－ Ｃ 积分器及 Ｏ Ｔ Ａ 加法器对高阶高通滤波传递函数的结构框图进行综合． 其中 Ｏ Ｔ Ａ 加法器中的电阻由 Ｄ Ｏ－ Ｏ Ｔ Ａ 实现， 整个电路仅由 Ｏ Ｔ Ａ 及接地电容构成， 而 Ｏ Ｔ Ａ 由 Ｃ Ｍ Ｏ Ｓ器件构成， 所以文中电路便于集成且与 Ｖ Ｌ Ｓ Ｉ工艺兼容．对三阶巴特沃思高通滤波器进行了设计举例，并给出了其计算机 Ｐ Ｓ Ｐ Ｉ Ｃ ＥThe paper presents a novel design method for high-order highpass filters: by using OTA-C integrators and OTA adders, the structure frame figure of high-order highpass filter transfer function is synthesized. The resistor in OTA adder is realized by DO-OTA(OTA with dual outputs).The circuit is just composed by OTAs and grounded capacitors. Moreover, the OTA is constructed by CMOS components. So the circuit is integrated conveniently and is compatible with VLSI technology. The design example of third-order butterworth highpass filter is given, and its computer PSPICE imitating and non-ideal character analysis are all made.

关 键 词：高通滤波器 CMOS OTA-C 运算跨导放大器 

分 类 号：TN713.4[电子电信—电路与系统]