Abstract
This paper comprises of a frequency tunable patch antenna on which a U-shaped metamaterial structure is designed. The antenna is loaded with coplanar waveguide (CPW) stub on which two MEMS shunt switch with capacitive gap of 1.5 \( \upmu{\text{m}} \) were placed at 0.2 mm distant from each other. The tunability in frequency is achieved by changing the gap between the bridge and the insulating layer, at up state of the switches. The antenna resonant frequency shifted from 10.54 GHz down to 10.52 GHz by changing the capacitive height from 1.5 to 1 \( \upmu{\text{m}} \). The simulation of designed model has been carried out in Ansoft HFSS and different antenna parameters like gain, radiation pattern, efficiency, and scattering parameter have been adopted in this paper.
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