Second Order Beats On CATV Systems (1975)

By Bert L. Henscheid, Theta-Com

With the advent of hybrid technology and the increased prevalence of 35 channel testing, an updated view of second order intermodulation behavior is needed. This paper is a report of studies made on a "latest generation" of hybrid amplifiers showing levels of distortion in the hybrid module, single station, and a cascade. Conclusions are drawn on a method of testing, and it will be shown that the commonly accepted cascade derate factors are invalid.

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