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This paper deals with realization of fractional-order impedance functions by passive electrical networks composed of a fractional capacitor and some RLC components. The necessary and sufficient conditions for the existence of such a realization are found in a general case. Also for impedance functions described by a class of fractional-order transfer functions, the realizability conditions are stated...
Some capacitor types, such as tantalum capacitors, cannot be well modeled by means of the commonly used R-L-C network, so other equivalent circuits are required when an accurate model is needed. This paper proposes a simple and systematic modeling procedure of capacitors. A canonical passive network (minimum number of elements) is synthesized from the frequency response of the capacitor. The validation...
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