Derivation for current-mode Wien oscillators using CCCCTAs

Abstract

According to NAM expansion method and adjoint network theorem, the systematic synthesis method of CCCCTA-based current-mode Wien oscillators is given and three different classes of the oscillators are derived. The class I oscillators have 16 different forms, the class II oscillators have 24 different forms, and the class III oscillators have 16 different forms. Since the circuits use fewer active elements and grounded capacitors, the circuits are easy to be integrated and provide the attractive feature of independent electronic control of the condition and frequency of oscillation. The circuit analysis and computer simulation results have been included to support the generation method.

Electronically tunable allpass filter: linear VCO design

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Voltage-variable inductor based linear voltage controlled quadrature oscillator implementation

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