Calculation of self‐impedance and radiation efficiency of a dipole near a lossy cylinder with arbitrary cross section by using the moment method and a spectrum of two‐dimensional solutions

Abstract

AbstractWe present a computation method for the self‐impedance and radiation efficiency of a dipole near a lossy dielectric cylinder with arbitrary cross section by using a spectrum of two‐dimensional (2‐D) solutions. The 2‐D solutions for the spectral Green's functions of the cylinder as well as the 3‐D solution for the current on the dipole are found by the method of moments (MoM). The 2‐D MoM approach makes use of the algorithm G2DMULT (Green's function of 2‐D multiregion structures). The geometry of a dipole near a lossy circular dielectric cylinder is, in a parallel work, used to validate a reverberation chamber for measuring the radiation efficiency and self‐impedance of small antennas. Therefore, the results in the present paper could be verified against results from other numerical programs and from measurements in both an anechoic chamber and a reverberation chamber. © 2002 John Wiley & Sons, Inc. Microwave Opt Technol Lett 32: 108–112, 2002.