Title
Emulation of current excited fractional-order capacitors and inductors using OTA topologies.
Abstract
A novel topology suitable for emulating fractional-order capacitors and inductors using current excitation is achieved using a fractional-order differentiator/integrator block and appropriately configured Operational Transconductance Amplifiers. The scheme is capable of emulating both fractional-order capacitors and fractional-order inductors without any modifications to its structure. This implementation allows for electronic tuning of the order, capacitance/inductance, and bandwidth of operation by modification of only the bias current. Post-layout simulation results of the impedance magnitude and phase confirm the correct emulated behavior of both fractional-order capacitors and inductors. Two examples highlight the applications of this topology in i) realizing a fractional-order bandpass filter and ii) emulating a Cole-impedance model for biological applications. For both examples the characteristics of each circuit are validated in simulation.
Year
DOI
Venue
2016
10.1016/j.mejo.2016.06.008
Microelectronics Journal
Keywords
Field
DocType
Fractional-order capacitor,Fractional-order inductor,Analog signal processing circuits,MOS integrated circuits,Fractional-order circuits
Inductance,Capacitor,Filter capacitor,Differentiator,Integrator,Inductor,Electronic engineering,Electrical impedance,Equivalent series resistance,Engineering,Electrical engineering
Journal
Volume
Issue
ISSN
55
C
0026-2692
Citations 
PageRank 
References 
7
0.65
12
Authors
4
Name
Order
Citations
PageRank
Georgia Tsirimokou18910.56
Costas Psychalinos232559.04
Todd J. Freeborn310914.27
Ahmed S. Elwakil441076.61