Simulation of Frequency Reconfigurable Square Log Periodic Microstrip Antenna Array

This paper describes the design and analysis of a frequency reconfigurable square microstrip patch antenna using the log periodic technique. The three square patches are fed by inset feed line technique and are connected with a single transmission line by a log-periodic array formation to form a wideband frequency from 2.9 to 3.4 GHz. By applying three PIN Diodes at the transmission line, two different subband frequencies are configured by switching ON and OFF the PIN Diode. Simulation results of return loss, realized gain, directivity for every sub bands also presented and discussed along with the antenna design.