이택경 박승옥 나정웅 김세윤 2024-01-22T00:44:54Z 2024-01-22T00:44:54Z 2022-01-10 1989-05 0895-2477 https://pubs.kist.re.kr/handle/201004/147350 Amplitude patterns of the electromagnetic field scattered by a circular air cylinder embedded in a dielectric medium are analyzed. Twenty five decibel double dip patterns measured by the scale­down experiment are presented. Theoretical analysis shows that these double dips become double nulls in the near­field region. This phenomenon is useful in locating high­contrast geological anomalies. Copyright ？ 1989 Wiley Periodicals, Inc., A Wiley Company English WILEY Near­field diffraction pattern by an underground void of circular cylinder Article 10.1002/mop.4650020511 1 Microwave and Optical Technology Letters, v.2, no.5, pp.179 - 183 Microwave and Optical Technology Letters 2 5 179 183 N scopus A1989U663300010 2-s2.0-0024656889