Performance Validation of ALSE Using In-house Fabricated Long Wire Antenna

The International standard CISPR 25 is applicable to any electrical/electronic component intended for use in vehicles, trailers and devices. In order to minimize the effect of Absorber Lined Shielded Enclosure (ALSE) on measured electric field, the latest edition of CISPR 25 has introduced a procedure in Annexure J for validation of ALSEs in the frequency range of 150 kHz to 1 GHz. The standard proposed two methods for ALSE validation viz. Reference measurement method and Modelled long wire antenna method. In this paper, validation of SAMEER's Semi-Anechoic Chamber (SAC) using Modelled long wire antenna method is explained. Design and fabrication details of long wire antenna along with measured results are also presented.