Radiation pattern of a probe-fed L-shaped plate antenna

Abstract

A suspended probe-fed L-shaped plate antenna typically with 24% impedance bandwidth is presented. Based on investigations on its input impedance characteristics, experimental studies on the radiation characteristics of the L-shaped plate antenna are further conducted. Far-field radiation patterns at five typical frequencies with the passband are measured at four typical planes. Achieved gains are also tested across the passband. In order to understand the radiation characteristics well, induced electric currents at the radiator surface are illustrated. The investigation shows that a suspended probe-fed L-shaped plate antenna not only offers enhanced impedance bandwidth, but also possesses dual linear polarization characteristics, useful for applications in random electromagnetic wave environments.