Naslov
Low-Sensitivity Active-RC Filters Using Impedance Tapering of Symmetrical Bridged-T and Twin-T Networks

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

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

Izvornik
Proceedings of The 2005 IEEE International Symposium on Circuits and Systems / Nobuo, Fujii ; Rokuya, Ishii ; Trajković, Ljiljana - Kobe : Institute of Electrical and Electronics Engineers (IEEE), 2005, 808-811

Skup
The 2005 IEEE International Symposium on Circuits and Systems

Mjesto i datum
Kobe, Japan, 23.05.2005. - 26.05.2005

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
low-sensitivity active-RC filters; bridged-T and twin-T networks; potential symmetry

Sažetak
In this paper we introduce a new design procedure for low-sensitivity filter sections, which have a symmetrical passive-RC network in the operational amplifier (opamp) feedback loop. In the design procedure we apply impedance scaling to the symmetrical bridged-T and twin-T networks ; they become "potentially symmetrical". The design of low-sensitivity allpole active-RC filters, which have an RC-ladder network in the opamp feedback loop, has already been published. There, successive L-sections of the ladder structure are impedance scaled upwards, from the driving source to the positive opamp input ; we refer to it as "impedance tapering". In both cases we reduce the filter's magnitude sensitivity to variations of the passive components of a circuit. The new design concept will be demonstrated by designing two very popular and often used filter sections: a band-pass realized by the Deliyannis SAB, and a band-rejection filter with a Twin-T. The sensitivity analysis is examined analytically and double-checked using PSpice Monte Carlo runs.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA