Measurement Of Intermodulation Products Generated By Corroded Or Loose Connections In Catv Systems (1984)
By Bradford S. Kellar, Raychem Corporation
Metal-to-metal junctions can exhibit non-linear characteristics as a result of corrosion or low contact pressure. The non-linearity can be seen on a V-I curve tracer and has been implicated in causing intermodulation interference, especially in the 5-30 MHz band. The junction behavior at RF under actual operating conditions cannot be accurately predicted from the low frequency V-I curve, however.
Measurements have been made of the actual level of 3rd order Intermodulation Products generated at RF by a variety of connections. The results are reported here, with a description of the factors found to influence the junction's behavior.
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