Compact Microstrip Patch Antenna Array With Defected Ground Structure For WIMAX And UAV Application
This paper presents a new miniaturized microstrip patch antenna array with defective ground structure at a centre
frequency 3.8 GHz for WiMax and UAV application. The proposed DGS is integrated in the ground plane of the patch
antenna array for size reduction. Finally, the resonance frequency of an initial microstrip antenna array shift from 5.2 GHz to
3.8 GHz and without much degrading the antenna performance miniaturization up to 45 % with respect to conventional
microstrip antenna is successfully accomplished. A prototype of the antenna was fabricated with the RT- Duroid substrate.
This technique is validated experimentally and measured results were in good agreement with simulated results.
Keywords- Microstrip Patch Antenna Array, Defected Ground Structure (DGS), Miniaturization, Wimax.