信号流图OTA-C高通滤波器
SIGNAL FLOW GRAPH OTA-C HIGH-PASS FILTERS
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摘要: 本文提出了采用OTA微分器设计高通滤波器的方法.基于有源滤波器的跳耦综合,导出了全极点高通梯形滤波器的OTA-C实现.该滤波器具有低灵敏度和高截止频率,与MOS工艺兼容,便于单片集成,调整方便.文中给出了实验结果和P-SPICE模拟,证明此滤波器的可行性.Abstract: A design technique for high-pass filters using OTA differentiator is presenred. By means of the leapfrog synthesis of the active filters, the OTA-C realization of the highorder high-pass filters is built up. The filter is compatible with MOS process. It has low sensitivity performance and high cut-off frequency, and can be tuned conveniently by the external voltages. Experimental results and P-SPICE simulation are given to prove its feasibility
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虢违頠,刘建献,杨山,电子学报,17(1989)4,106-109.[2]吴杰,通信学报,12(1991)4,76-78.[3]Antonioc, M. de Queiroz et al., Signal Flow Graph OTA-C Integrated Filters, Proc.EEE/ISCAS, ESPOO, Finland, June 7-9, 1988, pp. 2165-2168.[4]R. Nandi, Electron. Lett., 18(1980)17, 666-667. -
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