Implementation of Digital Quadrature Oscillators with Reduced Roundoff Noise
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.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is temporarily free for AES members.