Naslov
Low-Noise Active-RC Low-, High- and Band-Pass Allpole Filters Using Impedance Tapering

Autori
Jurišić, Dražen ; Moschytz, George S.

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

Izvornik
Proceedings of the 10th Mediterranean Electrotechnical Conference (MELECON 2000). Vol. 2 / Pattichis, Constantinos S. - Nikozija : Violaris Press Ltd., 2000, 591-594

ISBN
0-7803-6290-X

Skup
10th Mediterranean Electrotechnical Conference (10 ; 2000)

Mjesto i datum
Limassol, Cipar, 29.05.2000. - 31.05.2000

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Allpole filters; impedance tapering; low-noise active filters; low-sensitivity active filters

Sažetak
It is shown that low-sensitivity active resistance-capacitance (RC) filters are also low in output thermal noise. The design procedure of second- and third-order low-sensitivity allpole filters, using impedance tapering, has already been published. The component values selected for impedance tapering account for the considerable decrease in output thermal noise. The method of Zurada and Bialko was used to determine output noise spectral density and total rms output noise of filters. Passive elements and operational amplifier are represented by substitute noise models. The noise contribution of each device to the output node is calculated using noise transfer functions. The noise analysis was performed on the second-order (class 4) Sallen and Key low-pass, high-pass and band-pass filter sections using MATLAB. The extension to third- and higher-order filters follows the same principles. It was found that the filters with minimum noise coincide with the filters with minimum sensitivity to component tolerances

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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