Mode-Matching Analysis of a Coaxially Fed Annular Slot Surrounded with Corrugations

Abstract

Mode-matching analysis of a coaxially fed annular slot surrounded by corrugations is conducted in this study. An electromagnetic boundary value problem of a coaxially fed annular slot surrounded with corrugations is rigorously solved based on the Hankel transform, eigenfunction expansion, and mode-matching method. The radiated field is represented in a fast-convergent series that is amenable to numerical analysis. Numerical results are presented to illustrate the radiation behaviors in terms of the geometries of the corrugations and compared with measurement data.

Keywords:

• annular slot
• Hankel transform
• mode-matching method
• surface plasmon polariton like modes
• corrugations