Distortion and designing of signals propagating in a coaxial cable

We study the waveform distortions of a voltage pulse along the transmission line, particularly the decrease in amplitude and dispersion. Based on the solution of the telegrapher's equation, we propose a simple designing algorithm and generated the designed pulse so that after the distortion, it would appear as a square pulse of the desired amplitude and duration at a designated point on the line. From the experimental data taken at points 50m, 100m and 150m away from the generator, we concluded that a reduction of about 2/3 in the distortions was achieved, with a possibility of further improvement.