Instable second-order complex IIR filters are used to generate pairs of quadrature sinusoidal oscillators. Formulas are derived for setting the frequency, phase, and amplitude of the sinuoidals. Several structures of the oscillators are investigated. First- and second-order error feedback techniques are employed to substantially reduce the roundoff noise. Simulation results agree well with the analysis.

Author: Azizi, Seyed-Ali
Affiliation: Becker Automotive Systems, Karlsbad, Germany
AES Convention: 100 (May 1996) Paper Number: 4237
Publication Date: May 1, 1996
Subject: Signal Processing

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