Abstract
The characteristics of a slot antenna on a perfectly conducting elliptic cylinder coated by nonconfocal chiral media are investigated. The structure is fed with a line source or plane wave. The analysis is carried out by expressing the flelds in and around the cylinder in terms of Mathieu and modifled Mathieu functions using the separation of variable and exact boundary value technique. The unknown aperture fleld is expressed in terms of Fourier series with unknown expansion coe-cients. The expansion coe-cients are found by applying the boundary conditions on difierent surfaces and employing the addition theorem and orthogonality properties of the Mathieu functions. For TM and TE cases some numerical results of the antenna gain for co- and cross-polarized waves are presented and discussed.
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