Understanding soliton wave propagation in nonlinear transmission lines formillimeter wave multiplication

In this paper, soliton propagation in nonlinear transmission lines (NLTLs) periodically loaded with symmetric voltage dependent capacitances is studie d. From the lumped element equivalent circuit of the line we have analyzed the influence of nonlinear shunt reactances on soliton propagation characte ristics. It is shown that by increasing the non linearity of the C-V charac teristic, a faster separation of input signal into solitons is achieved. Th e fact that frequency multiplication in NLTLs is governed by soliton format ion makes the results of this work relevant to understand the influence of nonlinear lending devices on multiplier performance. Since a heterostructur e barrier varactor (HBV)-like voltage dependent capacitance has been consid ered for the nonlinear devices, this study can be of interest for the desig n of millimeter wave frequency multipliers loaded with HBVs.