SWITCHED-CURRENT FILTER DESIGN USING CASCADED SECTIONS

作     者：吴杰 Wu Jie, Department of EE, Hunan University, Changsha 410082

作者机构：Department of EE Hunan University Changsha 410082 

出 版 物：《Journal of Electronics(China)》 (电子科学学刊（英文版）)

年 卷 期：1993年第10卷第3期

页      面：273-278页

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 070208[理学-无线电物理] 07[理学] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China 

主　　题：Circuit theory and design Switched-Current Active filter 

摘      要：A new analogue sampled-data active device, named as a switched-current operationalamplifier (SIOA), is presented. The use of active circuit elements may simplify drawing the circuitdiagram significantly greatly and may permit easier analysis and synthesis of SI networks. Anumber of all pole and elliptic (second-or third-order) switched-current (SI) filters are derivedfrom the switched capacitor prototypes. These can be used as simple self-contained filters or asfilter sections in the cascaded realizations of a higher order transfer functions. To illustrate theapproach, a fifth-order low-pass filter is designed.