Practical and quantitative evaluation of the new CISPR 22 ferrite clamps

This paper reports on methods for evaluating the ferrite clamp of CISPR 22 Amendment 1:2000. Various ferrite clamp designs are compared quantitatively using the 15dB insertion loss requirement, within a jig proposed by CISPR working documents. The ferrite clamps are also evaluated, as a practical matter, by placing the ferrite clamp on a cable in a radiated emissions test configuration.