DISCUSSION ON SPIKES AND PLATEAUS IN PULSE DISTORTION SHAPE ALONG EXPONENTIAL MICROSTRIP TAPER

The propagation distortions of a nonideal square pulse along an expone ntial microstrip taper have been numerically calculated. Each part of the distorted pulse shape is related to either the frequency-dependent characteristics of the effective relative permittivity or to the freq uency-dependent reflection coefficient characteristics, The components of signal spectra at frequencies below 9 Grad/s do not cause the ring ing distortions, but cause the upward slope shift in the center part a nd the upward parallel shift in the sustained tail part to the distort ed pulse shape for the case of no reflection (NR), The ringing distort ions and the large spikes of the overshoot and undershoot distortions are caused by the components of the signal spectra in the frequency ra nge 100 less than or equal to omega less than or equal to 200 Grad/s w here the effective relative permittivity is changing very quickly with frequency.