A MODIFIED HARMONIC-BALANCE ANALYSIS OF SCHOTTKY DIODE MULTIPLIERS BASED UPON A HYDRODYNAMIC TRANSPORT MODEL

The accurate design and successful implementation of very high frequency nonlinear circuits requires both a detailed understanding of the physical operation of the active devices and of how these nonlinear devices interact with the linear embedding circuit. This work addresses the specific task of establishing a robust simulation tool that can be used to for the future design of GaAs Schottky diode multipliers at terahertz (— 0.3-10.0 THz) frequencies. This paper will present an entirely new algorithm for the optimization of these combined multiplier elements. In this novel approach, the available secondharmonic power of the diode is first optimized over all allowable diode excitation voltages and harmonics.