Oscillator Simulation Example Using RINCON

Posted on Feb 6, 2014

To demonstrate Rincon`s capability to simulate autonomous circuits, let us consider one-transistor oscillator, which uses phase-inverting resonance T-shape LC circuit. Schematic of this simulator is shown at fig. 1. Design of simulator is described in details in [2]. For purpose of simulation, let us pay attention to component models first. Then proposed circuit will be simulated in frequency sweep to look does

Oscillator Simulation Example Using RINCON
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oscillation condition are possible. After that time domain (using MHB solver) simulation will be performed. That code contains f  in generic interface of entity. That means that frequency value may be passed there from outside. This frequency is used by vin  voltage source. Amplitude of that source is set to 0. 001 to be sure that signal is really small. Rincon does not contain small signal AC simulation, so large-signal simulation is used to compute quantities. This report shows how to use Rincon VHDL-AMS/FD simulator to simulate oscillators in time domain - how to simulate open loop cascade, set up initial condition to start oscillator simulations. Shown how to run simulator in different modes HB and MHB (Harmonic Balance and Modulated Harmonic Balance).

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