Input susceptance of an arbitrarily large, circular loop antenna

This paper is presenting a very efficient technique for the computation of the input susceptance of an arbitrarily large, circular loop antenna. The Moment Method, in conjunction with point matching, is applied to Pockligton¿s integral equation, and the resulting matrix is inverted analytically, due to its circulant property. A magnetic frill excitation, in lieu of the commonly used delta gap source, is utilized to ensure a well-defined, finite susceptance. Results are compared to existing reference solutions for small loops, and are shown to be very accurate, although the algorithm is based on elementary mathematical concepts.