High power RF generation in nonlinear lumped transmission lines using commercial ceramic capacitor as nonlinear elements

Abstract

In recent years, nonlinear transmission lines (NLTLs) have been investigated for high-power radiofrequency (RF) generation. High-power waves produced using NLTLs can be applied in mobile defense platforms and satellite communications as they can reach tens of MW of peak power. Their principle of operations is based on the nonlinearity of the lumped elements (Ls and/or Cs) used in these lines. In this work, a NLTL using commercial ceramic capacitors as nonlinear elements and linear inductors was simulated and built. Experimental and simulated results show good agreement validating the model of ceramic capacitors. The frequency obtained from soliton generation at the output of the line was about 4 MHz with peak power of the order of 1 kW.