Naslov
Low-Sensitivity SAB Band-Pass Active-RC Filter Using Impedance Tapering

Autori
Jurišić, Dražen ; Moschytz, George S. ; Mijat, Neven

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of The 2001 IEEE International Symposium on Circuits and Systems, Vol. I / Skellern, David; Hellestrand, Graham - Sydney : Institute of Electrical and Electronics Engineers (IEEE), 2001, 160-163

Skup
2001 IEEE International Symposium on Circuits and Systems

Mjesto i datum
Sydney, Australija, 06.05.2001. - 09.05.2001

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
low-sensitivity; single-amplifier biquad; active-RC filters; impedance tapering

Sažetak
The design procedure of low-sensitivity second-and third-order class-4 Sallen and Key active resistance-capacitance (RC) allpole filters, using impedance tapering, has already been published. There a ladder structure in the positive feedback loop of an operational amplifier was used. In this paper desensitization using impedance tapering is applied to class-3 circuits with negative feedback referred to as a “single-amplifier biquad” (SAB). The RC-section in the negative feedback loop is impedance scaled upwards, from the driving source to the negative amplifier input. Second-order band-pass filters are considered. The improvement comes free of charge; component count and topology remain unchanged, whereas the component values, selected for impedance tapering, account for the significant decrease in sensitivity to component tolerances.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA