Abstract
Abstract : The generalized network formulation for aperture problems is a well-established method for determining electromagnetic scattering from an aperture-perforated conducting surface. This method is easily implemented for an aperture in an infinite conducting plane because the field due to a sheet of magnetic current M on the surface of a conducting plane is, by the method of images, the field of 2M in free space. The method is more difficult to implement for an aperture in a curved conducting surface because the electric current induced by M on this surface can not be accounted for by imaging. This current must be calculated. Its calculated values are often inaccurate and so are those of the aperture field. In the present work, a more accurate aperture field is obtained for a particular TM curved cylindrical surface by means of the generalized network formulation for aperture problems in conjunction with a new method called the pseudo-image method. This aperture field was calculated by means of computer programs which will be described and listed in a forthcoming report. Keywords: Aperture admittance; Electromagnetic scattering; Generalized network formulation; Pseudo image method; Slotted cylinder; Two dimensional fields.
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