“…In this work, the antenna characteristics, described by equations (2)-(6), were numerically computed by using the CST software. The FDTD technique was chosen for the numerical evaluation of the F-shaped printed dipole antenna [1], illustrated in Fig. 1, in order to obtain its return loss, here expressed by the S 11 parameter, input impedance Za and gain G. For the antenna simulation and construction it was used a double-sided copper fiber glass substrate, FR4, with characterized relative electric permittivity r = 4.3 and loss tangent = 0.01.…”