Abstract
A combination of tapered step ground plane with electromagnetic band gap structured CPW fed antenna is proposed for wideband applications. Bandwidth is enhanced by adding tapered steps on the ground plane and by placing EBG structure in the design. Elliptical and rectangular monopole antennas are designed and discussed in detail with respect to their performance characteristics. The proposed models are printed on FR4 substrate of dielectric constant 4.4 with dimension of 20X20X1.6 mm. The parametric analysis with change in substrate permittivity is recorded and presented in this work for better understanding of the antenna behaviour with different substrate materials. The proposed models exhibiting excellent wideband characteristics in the communication applications with stable gain and efficiency.
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