Voltage-Mode Universal Biquadratic Filter Using Two OTAs and Two Capacitors

Jiun-Wei HORNG  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E86-A   No.2   pp.411-413
Publication Date: 2003/02/01
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section on Analog Circuit Techniques and Related Topics)
OTA,  universal biquadratic filter,  voltage-mode,  

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A three inputs and single output voltage-mode universal biquadratic filter using only two operational transconductance amplifiers (OTAs) and two capacitors is presented. The new circuits offer several advantages, such as employing the minimum number of active and passive components (two OTAs and two capacitors), the versatility to synthesize highpass, bandpass, lowpass, notch and allpass responses without component matching conditions, high input impedance for bandpass and lowpass filter realizations and good sensitivities performance.