Abstract
In this paper, a novel shaped microstrip antenna is proposed for millimeter wave wireless applications. Dual band performance is achieved by embedding the defect in the ground plane. Then, a metallic reflector is used in the near-reactive region beneath the ground plane of the antenna to achieve ultrawideband performance at millimeter wave range. Further, a dielectric superstrate is placed again in the near-reactive region just above the upper face of the antenna which deflects the radiated waves of near-reactive region and influenced the surface wave on the antenna surface and results in the enhanced antenna bandwidth and gain. Simulation and analysis of proposed antenna is done by High Frequency Structure Simulator which is based on Finite Element Method. Again, theoretical analysis of structure is carried out using equivalent circuit theory approach and designed structure is fabricated by standard photolithography process. Simulated, theoretical, and measured results are in accordance with each other.
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