Soliton propagation in a nonlinear lossy LC ladder network has been st
udied We propose a quadratic polynomial expression to model the C-V ch
aracteristic of the nonlinear capacitor of the LC ladder network. This
fits the experimental C-V data better over a wider range of the appli
ed voltage, compared with the conventionally used formulae. Using this
C-V expression, the Korteweg-de Vries (KdV) equation with a loss term
has been obtained. This nonlinear equation has been solved by employi
ng a novel technique that is based on Fourier series analysis. We have
investigated the effects of bias voltage on the soliton pulse width a
nd peak voltage and found a good agreement between the theoretical and
experimental results.