Title :
Novel tunable GaAs MESFET OTA-C integrator suitable for high precision filtering applications
Author :
Visocchi, P. ; Taylor, James ; Betts, Alexander ; Haigh, D.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll., London Univ., UK
Abstract :
A novel, differential input OTA-C integrator with independent control of transconductance Gm and output conductance G0 is described. Because a second order section with separate control of centre frequency and Q can be constructed using just two such units, the circuit is particularly applicable to precision filtering applications.
Keywords :
III-V semiconductors; MMIC; Schottky gate field effect transistors; active filters; differential amplifiers; field effect integrated circuits; gallium arsenide; integrating circuits; operational amplifiers; GaAs; control of Q-factor; differential input OTA-C integrator; independent control of output conductance; independent control of transconductance; precision filtering applications; second order section; semiconductors; separate control of centre frequency;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911044
