Broadband Stacked Microstrip Antennas with Different Radiating Patch

Broadband stacked U-slot microstrip antennas incorporating E-shape and modified half-E shape radiating patches are introduced and studied for impedance bandwidth. It is shown that the stacked antennas are inherently broadband which is explored by investigating the behavior of the currents on the patch and compare the results of different configurations. Parameters such as substrate thickness, slot length and width are also investigated and design results from parametric simulations are presented. An experimental study confirms the simulation studies. A maximum impedance bandwidth of 60.2% could be achieved using this stacked configuration with a modified half-E shape radiating patch.