Dipole Admittances Obtained via Convergence Acceleration Methods: Fast and Accurate Computations

Abstract

Provided that the exact kernel is used, the application of simple and popular numerical methods to Hall?n-type integral equations for increasing numbers of basis functions (or points per wavelength) yields sequences of driving-point conductance and susceptance that can be extrapolated via properly selected convergence acceleration methods (CAMs). Such methods can lead to accurate final or converged results without the need for cumbersome and exhaustive runs or tests. Easy-to-apply CAMs are considered and highly accurate results are provided for the driving-point admittances of dipole antennas. The numerical results thus obtained are compared to well-known measured monopole admittances. These measured results are discussed in detail and some interpretations that allow a firm comparison are proposed. We thus combine good engineering practices (some of which are not novel) to obtain reliable theoretical values of drivingpoint admittance.