Design and optimization of quasi-optical frequency multipliers

This paper presents a Ill-wave algorithm for the design and the optimizatio n of quasi-optical frequency multipliers and discusses its implementation i n a specialized computer code, able to simulate as a whole the non-linear d evice, the planar antenna and the embedding layered structure. The electrom agnetic analysis of the multiplier is performed under the simplifying appro ximation of an infinite array excited by a uniform plane wave incident from the broadside direction. The array parameters are deduced from a full-wave analysis, based on the Method of the Moments, while the solution of the no n-linear circuit is found by the Harmonic Balance Method.