SURFACE WAVES IN A NONUNIFORMLY CORRUGATED CYLINDRICAL METALLIC STRUCTURE

S K CHATTERJEE, T S RUKMINI, R CHATTERJEE

Abstract


The characteristic equation of a cosinusoidally spacing modulated corrugated cylindrical metallic structure excited in Etrwave has  been formulated by using non-homogeneous mixed boundary condition.Power curled by surface waves inside and outside the modulated medium which is tie2tcd as an artificial dielectric and power lost and hence attenuation constant have beendeteimined. Expression for the relative amplitudes of Floquet harmonics with respect to that of the ftrid2,rnental has been derived by finding the Fourier gap coefficient and using WKIIT approximation. Surface impedance of the modulated structure has also been determined.

Keywords


Surface wave modulated structure; Floquet harmonics.

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