Projeto de Antenas Compactas para um Sistema de Localização usando Sinais de TV Digital

This paper presents the development of antennas operating in Brazilian Digital TV, which ranges from 470 MHz to 860 MHz, to integrate a localization system using Digital TV signals. The directivity and antenna size are important design aspects. Different models of dipole antenna arrays are discussed for comparison purposes - the Log-Periodic of cylindrical linear conductors and the compact Log-Periodic microstrip - using Koch's fractal geometry for miniaturizing the structure.