This thesis is concerned with both the theoretical and experimental analysis of the time domain response of Co-axial cables.
The physical processes causing high frequency loss are discussed. Expressions are developed that include the planar skin effect loss and the dielectric loss. An analytical expression is derived for the line shunt admittance by considering the polymer dielectric to exhibit a distribution of relaxation times. A unique attenuation function is also derived.
A description is given of an analog-digital conversion system using a PDP-15 computer. In this system the experimental observations of time domain response are analyzed using a Fast Fourier transform (FFT) algorithm to obtain the frequency domain response of the time sampled data. Finally a least square minimization curve fit is applied to obtain the coefficients of the attenuation function.
Experimental observations of time domain response show an excellent agreement with the theory.