Field penetration through small apertures: The first-order correction
Article first published online: 7 DEC 2012
Copyright 1979 by the American Geophysical Union.
Volume 14, Issue 2, pages 319–331, March-April 1979
How to Cite
1979), Field penetration through small apertures: The first-order correction, Radio Sci., 14(2), 319–331, doi:10.1029/RS014i002p00319.(
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Received: 21 JUL 1978
The penetration of an incident wave through an aperture in a perfectly conducting screen is considered. The dimensions of the aperture are small with respect to the wavelength λ. The fields are expanded in a power series in jk, where k = 2π/λ. The zero-order terms are well-known: they require the solution of electrostatic or magnetostatic problems. The article is concerned with the first-order terms. The integro-differential equations for these terms are derived, and the diffracted field in the far-field region of the aperture is investigated. The relevant multipole-moments are evaluated.