A Resonant Coaxial-Stub as an Autchatic Equalizer

This paper describes a novel application of a resonant coaxial-stub which is very short in comparison with the shorter wavelengths in the video spectrum. As far as the principle of operation is concerned, the designation "resonant reactance stub" appears to be an appropriate term for the short piece of the coaxial cable used in this application. The stub provides automatic equalization at the input of a video circuit which presents a changing capacitance from time to time as a result of the incidence of additional video loops with appreciable input-capacity.