Journal of the Korean Institute of Telematics and Electronics A (전자공학회논문지A)
- Volume 32A Issue 2
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- Pages.19-30
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- 1995
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- 1016-135X(pISSN)
NEAR=FIELD DIFFRACTION PATTERN BY A SPHERICAL AIR CAVITY IN A DIELECTRIC MEDIUM
유전체 매질내에 있는 구형공동에 의한 근거리 회절패턴
Abstract
Diffraction patterns of the copolarized and the crosspolarized total electric fields by a spherical air cavity in a dielectric medium are analyzed in the forward near-field region when the wavelength of the incident plane wave is comparable to one half of the cavity radius. It is shown that double nulls and dips of the copolarized and the crosspolarized total electric fields exist in the measurement plane tansverse to the propagating direction of the incident field, and their dependences on the frequency, the distance of the measurement plane, and the measurement angle are analyzed.
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