Simple technique for the measurement of the transfer impedance of variable length coaxial interconnecting leads

An experimental technique for the routine measurement of the transfer impedance of variable length coaxial leads was developed. Ready-made leads incorporating connectors at either end can be evaluated either for the purposes of quality control during manufacture or when performing general electromagnetic compatibility (EMC) troubleshooting. A low-cost measurement fixture is proposed and the measurement method is elementary. Lead lengths of up to a few meters in length can be measured up to frequencies of approximately 300 MHz. Measured results for RG-58 cables are presented and compared to published values to validate the method.