Naslov
Third-Order Fractional-Step Band-Pass Filters

Autori
Jurišić, Dražen ; Lutovac, Budimir

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

Izvornik
Proceedings of the 2020 9th Mediterranean Conference on Embedded Computing (MECO) / Stojanović, Radovan ; Jóźwiak, Lech ; Jurišić, Dražen ; Lutovac, Budimir - Budva : Institute of Electrical and Electronics Engineers (IEEE), 2020, 549-554

ISBN
978-1-7281-6949-1

Skup
9th Mediterranean Conference on Embedded Computing (MECO)

Mjesto i datum
Budva, Crna Gora, 08.06.2020. - 11.06.2020

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
active filters ; analog circuits ; circuit synthesis ; fractional-order biquads ; filtering theory ; band-pass filters cascade

Sažetak
In this paper a third-order band-pass (BP) filter with geometrically-symmetrical characteristic is presented, for the first time to the authors knowledge. This filter characteristic is only possible to be obtained by fractional-order (FO) filter design. The desired characteristic was Chebyshev 0.1dB pass-band ripple and with normalized bandwidth B=0.1. Starting from common fourth-order BP transfer function the design was performed numerically using the nonlinear trust-region-reflective, least square algorithm in Matlab. The resulting third-order BP filter approximates very well in the pass-band frequency region, while possessing fractional step in the stop band. The wanted BP transfer function is realized as cascade in two ways: biquads with integer order (IO) and biquads with FO. The obtained design parameters in the IO and FO realizations are compared. Approximation of the constant phase element by Foster I passive RC network is used in a Pspice analysis. That Pspice analysis in a frequency and a time domain are confirming the realizability and stability of the proposed filter, respectively.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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