Effective dielectric constant of multilayered dielectric media for coaxial probe-fed annular ring patch antenna design in wireless applications

Abstract In this article, a simple model is proposed to compute the effective dielectric constant, resonant frequency, quality factors, input impedance, bandwidth and gain of a coaxial probe fed annular ring patch antenna loaded with several dielectric layers. This model is based on conformal mapping technique, cavity model and single resonant parallel R-L-C circuit. The computed values employing the present model are compared with experimental and simulation results. The present model shows good agreement with experimental and simulation results.