Finding method of radiated emission sources with arbitrary directional current components utilizing CISPR measurement system

摘要

The possibility of applying a recently proposed emission source location method, which is based on CISPR measure- ments, to sources with arbitrary directional current components is stud- ied. We propose a new finding algorithm in which the horizontal and the vertical current components are estimated at the same time by tak- ing into account the contribution of horizontal current components when calculating the vertical electric field. As a result of experimental verifi- cation by using two spherical dipole antennas as ideal emission sources, estimated values show good agreement with the original ones in the frequency range from 300 MHz to 1 GHz, where the position estima- tion deviationΔt was less than 0.15 m, the amplitude estimation de- viationΔj was less than 2.1 dB, and furthermore the angle of current direction could be estimate.