High-Input Impedance Voltage-Mode Multifunction Filter with Three-Input Single-Output Based on Simple CMOS OTAs

被引：5
|
作者：
Kumngern, Montree [1 ]
Somdunyakanok, Montri [2 ]
Prommee, Pipat [1 ]
机构：
[1] King Mongkuts Inst Technol Ladkrabang, Fac Engn, Telecommun Engn Dept, Bangkok 10520, Thailand
[2] Siam Univ, Fac Engn, Dept Elect Engn, Bangkok 10160, Thailand
来源：
2008 INTERNATIONAL SYMPOSIUM ON COMMUNICATIONS AND INFORMATION TECHNOLOGIES | 2008年
关键词：
D O I：
10.1109/ISCIT.2008.4700228
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
A new voltage-mode three inputs and one output universal biquadratic filter with high-input impedance employing six simple operational transconductance amplifiers (OTAs) and two grounded capacitors is presented. The proposed circuit offers the following features: realization of all the standard filter functions, that is, highpass, bandpass, lowpass, bandstop, and allpass filters; electronically tunable of the angular frequency through adjusting the bias currents/voltages of OTAs; no requirements for component matching conditions; high-input impedance good for cascadability for the voltage-mode circuits; the use of only grounded capacitors and require no resistor; low active and passive sensitivities. PSPICE simulation results that confirm the theoretical predictions are given.
引用
收藏
页码：426 / +
页数：3
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