Abstract

In this paper, the effect of the diffusion capacitance upon the electrical performances of the nonlinear transmission lines (NLTLs) is investigated. A comparison between the results obtained for the second harmonic generation by modeling the NLTL with and without the diffusion capacitance is presented. Numerical simulations, performed by means of the harmonic balance method implemented on the Hewlett Packard Microwave Design System Software Package, show significant differences when the diffusion capacitance is included in the NLTL model in comparison with the standard modeling of the NLTL by neglecting this capacitance.