Naslov
Fractional-Order Elements Using Tunable OTA-C Structures

Autori
Kostelac, Fran ; Ćoza, Andro ; Jurišić, Dražen

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

Izvornik
Proceedings of the 2021 44th International Convention on Information, Communication and Electronic Technology (MIPRO) / Koricic, Marko et al. - Opatija : Institute of Electrical and Electronics Engineers (IEEE), 2021, 119-124

ISBN
978-953-233-101-1

Skup
44th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO 2021)

Mjesto i datum
Opatija, Hrvatska, 27.09.2021. - 01.10.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
analog circuits ; circuit synthesis ; fractional-order element ; continuous fraction expansion approximation ; OTA-C systems ; integrated circuits design

Sažetak
Most of the research on fractional-order (FO) systems has been presented for passive realization of FO capacitors and inductors. In this paper, an active realization of a FO capacitor or a constant-phase element (CPE) is presented in the form which can be realized as an integrated circuit. The realization is demonstrated using OTA-C structures in AMS 0.35um C35B4 technology. We propose the realization of active constant phase elements using OTAs having MOS transistors in the saturation region. The linearization of each OTA is applied by source degeneration. We use standard approximation such as second-order continuous fraction expansion (CFE) to design three non-integer orders of 1/3, 1/2 and 2/3. We propose tuning method using different bias currents of OTAs to obtain desired phase characteristics of the CPE.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA