M. Kara, A SIMPLE TECHNIQUE FOR THE CALCULATION OF THE BANDWIDTH OF RECTANGULAR MICROSTRIP ANTENNA ELEMENTS WITH VARIOUS SUBSTRATE THICKNESSES, Microwave and optical technology letters, 12(1), 1996, pp. 16-20
Several formulas based on the cavity model and the transmission-line m
odel are combined to produce closed-form expressions for calculating t
he bandwidth of probe-fed rectangular microstrip antenna elements with
various thicknesses and various relative permittivities of substrate
materials. The formula takes into account the effects of radiation and
conductor and dielectric losses, with their quality factors. The resu
lts obtained from this technique confirm those calculated from the MSA
nt program of Pozar [19], and measured results. (C) 1996 John Wiley &
Sons, Inc.