A 9 slots antenna designed by Chebyshev technique and modeled by Finite Difference Time Domain

Slot antennas are widely used devices in microwave communications, especially when they are used as arrays, one of its applications are as WiFi antennas. We present the analysis of a slot antenna using the finite difference time domain method (FDTD). The FDTD method is an easy way to analyze complex structures; the theoretical analysis of a slot antenna supposes the slots are impressed over an infinite plane, missing the effect of the scattered fields in the waveguide sides, as the FDTD simulates the electromagnetic field, considering the media characteristics point by point, is possible to see its behavior in a more exactly way. The application example is a 9 element resonant array designed using the Chebyshev technique to reduce side lobes, antenna behavior was analyzed and then constructed; the results show a good agreement between both, simulation and experiment.