信號(hào)流圖OTA-C高通濾波器
SIGNAL FLOW GRAPH OTA-C HIGH-PASS FILTERS
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摘要: 本文提出了采用OTA微分器設(shè)計(jì)高通濾波器的方法.基于有源濾波器的跳耦綜合,導(dǎo)出了全極點(diǎn)高通梯形濾波器的OTA-C實(shí)現(xiàn).該濾波器具有低靈敏度和高截止頻率,與MOS工藝兼容,便于單片集成,調(diào)整方便.文中給出了實(shí)驗(yàn)結(jié)果和P-SPICE模擬,證明此濾波器的可行性.
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關(guān)鍵詞:
- OTA-C高通濾波器; 信號(hào)流圖; 微分器; OTA微分器
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 -
虢違頠,劉建獻(xiàn),楊山,電子學(xué)報(bào),17(1989)4,106-109.[2]吳杰,通信學(xué)報(bào),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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