2024 - Development of Validation Procedures for Automotive Anechoic Chambers from 1 GHz – 6 GHz
Michael Trischitz, Alexander Kriz
Messe und Kongress für Elektromagnetische Verträglichkeit, 12.-14.02.2024, Köln
Abstract:
Introduction - Over the years, EMC standards have come to require stricter limits and higher frequency ranges for a variety of tests. Therefore, the test environment must be constructed and validated to meet the demands for higher frequency ranges. In December 2021, Edition 5.0 of the international standard CISPR 25 for “Vehicles, boats and internal combustion engines – Radio disturbance characteristics – Limits and methods of measurement for the protection of on-board receivers” was published. Since then, the standard requires emission measurements of components and modules from 150 kHz – 5.925 GHz. On the other hand, the test site validation procedure described in CISPR 25 is only specified from 150 kHz – 1 GHz [1]. Therefore, most automotive products are tested in frequency ranges which exceed the upper frequency limit of the accredited validated Absorber Lined Shielded Enclosures (ALSEs). In this scientific work, two site validation procedures are developed and investigated. The simulation method and the reference measurement method.