A Gm- C architecture for a quadrature, sinusoidal os- ± Vref cillator with instantaneous, phase-preserving, linear frequency control Peak detector and independent, static amplitude control is presented. The architecture L C R' -R<> is analyzed and closed-form expressions are given for both frequency and amplitude. An implementation of the architecture using general purpose discrete bipolar transistors has been tested. Simulation results and measurements are demonstrated and compared to theory. The wide
Dimitrios N. Loizos, Paul-Peter Sotiriadis