Journal of the Korean Institute of Telematics and Electronics A (전자공학회논문지A)
- Volume 32A Issue 6
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- Pages.10-18
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- 1995
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- 1016-135X(pISSN)
Electromagnetic wave diffraction pattern by a circular cylindrical cavity in the denser medium
매질내의 원통형 공동에 의한 전자파 회절패턴
Abstract
Diffraction patterns of the electromagnetic field scattered by a circular cylindrical cavity embedded in a dielectric medium are analyzed. When the wavelength of the incident wave is comparable to the radius of the cavity, strong double dips occur at the locations corresponding to the top and the bottom of the cavity. Furthermore, the phase changes abruptly about the dip points. The changes of the amplitude and the phase patterns are observed as the measuring distance and the signal frequency varies. The effects of the change of the medium dielectric constant on the diffraction pattern is also presented.
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