광대역 시험 신호원과 기존 시험 신호원이 대상 기기의 내성 특성에 미치는 거동 비교에 대한 실험적 연구

Abstract

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This study aims to compare the impact of existing signal sources of the conventional radiated immunity standard and a newly introduced broadband signal source on the equipment under test concerning the recently drafted broadband radiated immunity standard, IEC 61000-4-41. The comparison for disturbance signal sources utilized CW, AM, and PM signals adhering to IEC 61000-4-3, 4-39, and ISO 11452-1 standards. For the broadband disturbance signal source, an OFDM signal with a 20 MHz bandwidth and applied FIR filter was used. Additionally, a key parameter, ‘immunity level,’ was introduced to compare and analyze the impact of each signal source. The results revealed that when using the OFDM signal, the immunity level of the equipment under test was lower compared to the immunity level when using the conventional signal sources.