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꼭지절단 원추형 페라이트 전파흡수체의 최적설게 및 제작에 관한 연구
김동일,박종구,정세모,원영수,이영구 한국해양대학교 산업기술연구소 2001 연구논문집 Vol.18 No.-
The remarkable progress of electronics and radio communications technology has made our life abundant. On the other hand, the countermeasure of EMC becomes more important socially according to the increased use of electromagnetic waves. It had been required that the absorbing ability of an electromagnetic wave absorber is more than 20 dB, the bandwidth of which is require through 30 MHz to 1,000 MHz for satisfying the international standard about an anechoic chamber for EMI/EMS measurement. From November of 1998, however, the CISPR11 has accepted the extended frequency band from 30MHz to 18 GHz in the bandwidth of EMI measurement. In this paper, we propose the cutting corn-shaped type satisfying the above requirments and carried out broadband design using the equivalent material constants method. Moreover, we have fabricated it and compared its characteristics with simulated one.