Title :
Tuning strategies in high-frequency integrated continuous-time filters
Author :
VanPeteghem, Peter M. ; Song, Rujiang
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
fDate :
1/1/1989 12:00:00 AM
Abstract :
Three approaches for tuning integrated continuous-time filters are discussed and compared. Results are presented that refer, but are not limited to, second-order bandpass filters implemented with transconductance amplifiers and capacitors (OTA-C filters). It is shown that tuning with two frequencies has superior performance over single-frequency tuning: in this first case, center frequency, bandwidth, and midband gain of a biquad can be tuned exactly; in the second case, only center frequency and midband gain can be so tuned
Keywords :
active filters; band-pass filters; operational amplifiers; tuning; OTA-C filters; bandwidth; biquad; capacitors; center frequency; high-frequency; integrated continuous-time filters; midband gain; second-order bandpass filters; transconductance amplifiers; tuning strategies; Band pass filters; Bandwidth; Capacitors; Circuit optimization; Performance gain; Q factor; Resonance; Resonant frequency; Transconductance; Tuning;
Journal_Title :
Circuits and Systems, IEEE Transactions on
