Design of a circular fractal antenna for satellites applications

Communication systems demand satellite services due its global coverage and capacity to stand all-time communications. Since newer applications need high data rates, higher frequencies are often chosen while considering financial costs. In particular, recent papers show the usage for K and Ka bands. In order to fulfill these requirements, this work shows a modified circular patch antenna with fractal technology applied, which guarantees multiband operation and size reduction – an effect desired to satellite communication. Results obtained from simulation by return loss and radiation patterns assure, according to Anatel’s catalog (Brazil’s regulatory agency), that the bands are compatible with satellite communications. That is to say, the fractal antenna can operate in applications within the satellite communication context, with low cost transmutation with no need to adjust the dimensions of the reference antenna.