100-300 GHZ GUNN OSCILLATOR SIMULATION THROUGH HARMONIC-BALANCE CIRCUIT ANALYSIS LINKED TO A HYDRODYNAMIC DEVICE SIMULATOR

Accurate and efficient calculations of the large-signal AC behavior of second-harmonic InP Transferred Electron Oscillators (TEO's) are pres ented. This is accomplished by combining a novel harmonic balance circ uit analysis technique with a hydrodynamic device simulator employing the temperature dependent drift and diffusion equations. The electron transport simulations include a detailed heat flow analysis to update the temperature profile in the device. The nonlinear circuit analysis utilizes a fixed-point iterative method derived from the robust multip le reflection algorithm. To expedite the process and aid in convergenc e, an acceleration technique is also employed in this algorithm. The a ssociated reduction in computation time allows for the inclusion of a hydrodynamic treatment of the Transferred Electron Device (TED) using the modified drift and diffusion equations. Comparisons are made with the published experimental data reported by Rydberg on second-harmonic 188 GHz InP TEO's.