Title :
A high-precision, fully tunable OTA-C second-order bandpass filter implemented in GaAs MESFET technology
Author :
Visocchi, P. ; Taylor, John ; Mason, Richard ; Betts, Andrew ; Haigh, David
Author_Institution :
BNR Europe, Harlow, UK
fDate :
30 May-2 Jun 1994
Abstract :
A fully tunable OTA-C second-order bandpass filter is presented which is intended for use in high precision, IF bandpass filtering applications. Detailed measured results show independent tuning of centre frequency in the range 12-50 MHz, and Q in the range 4-60. In addition, the transfer function accuracy in terms of both amplitude and group delay is of the order of 1%
Keywords :
III-V semiconductors; MESFET circuits; Q-factor; active filters; band-pass filters; circuit tuning; gallium arsenide; operational amplifiers; transfer functions; 12 to 50 MHz; GaAs; GaAs MESFET technology; Q factor; group delay; high precision IF filtering; transfer function; tunable OTA-C second-order bandpass filter; Band pass filters; Bandwidth; CMOS technology; Delay; Filtering; Frequency; Gallium arsenide; MESFETs; Transconductance; Tunable circuits and devices;
Conference_Titel :
Circuits and Systems, 1994. ISCAS '94., 1994 IEEE International Symposium on
Conference_Location :
London
Print_ISBN :
0-7803-1915-X
DOI :
10.1109/ISCAS.1994.409454
