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학술지 Return Loss Removal in Shielding Effectiveness Measurement Using IEEE 299.1
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저자
황정환, 박현호, 형창희, 권종화
발행일
202210
출처
IEEE Transactions on Electromagnetic Compatibility, v.64 no.5, pp.1708-1717
ISSN
0018-9375
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TEMC.2022.3199074
협약과제
22HH3200, 저비용 EMP 경량방호 소재·부품·장치 및 시설 취약성 평가 핵심기술 개발, 황정환
초록
In this article, a method for removing the return loss effect during shielding effectiveness (SE) measurements for a shielding enclosure is proposed. According to the IEEE 299.1 standard, a receiving antenna is located inside the enclosure to be measured, and this antenna measures the signal loss after passing through the enclosure. The receiving antenna experiences the return loss at its input, and this return loss increases the SE because the occurrence of the return loss is equivalent to the increasing loss when passing through the enclosure. The IEEE 299.1 standard provides a method for removing the return loss effect. The return-loss removal is only effective, however, when the receiving antenna has an input impedance that does not significantly change, remaining almost constant at the adjacent frequencies. The proposed method generalizes the return-loss removal, and thus the return loss effect can be removed irrespective of the input impedance condition of the receiving antenna. As the return loss is removed for any type of the receiving antenna, the SE can be accurately measured to prevent an overestimation of the SE.
KSP 제안 키워드
IEEE 299, Input Impedance, Receiving antennas, Return loss(RL), Shielding effectiveness measurement, Signal loss, shielding enclosure