基于CCII和CDCTA的低功耗电控调谐n阶滤波器设计  

Design of low-power electronically controllable nth-order filter using CCII and CDCTA

作　　者：王春霞[1] 司国斌[1] 郭亚涛 Wang Chunxia;Si Guobin;Guo Yatao(Mechanical and Electrical Engineering,Jiaozuo University,Jiaozuo 454003,China;State Grid Corporation of China,Wenxian Power Supply Company,Jiaozuo 454003,China)

机构地区：[1]焦作大学机电工程学院,河南焦作454003 [2]中国国家电网河南温县供电公司,河南焦作454003

出　　处：《电子技术应用》2018年第7期56-58,63,共4页Application of Electronic Technique

基　　金：河南省科技攻关项目(152102210204;152102210020)

摘　　要：针对高阶滤波器功耗高和频带窄的问题,提出了一种电流模式n阶多功能滤波器。该电路仅由一个第二代电流传输器(CCII)、一个电流差分级联跨导放大器(CDCTA)以及接地电容组成。电路结构简单,功耗低至6.82 mW,灵敏度小于1,3 dB带宽大于100 MHz,且带宽可电控调谐。PSpice仿真和硬件实验测试结果表明所设计的电路正确有效。In order to solve problems of high power consumption and narrow bandwidth, a new current-mode nth-order multifunction filter circuit was presented. It is composed of one CCII（ second-generation current conveyor）, one CDCTA（ current differencing cascaded transconductance amplifier） and grounded capacitors. The proposed filter enjoys the simple structure and the circuit power consump-tion is only 6. 82 mW, the maximum sensitivities value is only 1 and the circuit bandwidth is over 100 MHz. Moreover, its band-width can be tuned electronically. PSpice simulation and hardware experiment have been included to verify the theoretical analysis.

关 键 词：N阶滤波器 CCII CDCTA 电流模式电路 

分 类 号：TN713[电子电信—电路与系统]