Analysis of Magnetic Field Distribution around Connector with Contact Failure

Abstract

When contact failure occurs in a connector in a coaxial high-frequency (HF) signal transmission line, an electromagnetic field is radiated around the connector. The authors computed the strength of the magnetic field in the area around the cross section of a connector with contact failure. The results shows a relationship between the current at the contact point and the magnetic field around the transmission line. Using this relationship, we can predict the contact condition by observing the magnetic field around the transmission line.