DESIGN AND DEVELOPMENT OF PATCH ANTENNA FOR WIRELESS APPLICATIONS

B Rajagnanapazham, P Alagesan
2016 South Asian Journal of Engineering and Technology   unpublished
Generally, antennas which having the back lobe during radiation, leads to waste of power that is undesirable. To overcome this drawback and to increase the performance we can prefer patch antenna with EBG and PBG structures. Antenna performances generally measured with the help of few parameters that describe the antennas radiating circuit or other properties. These parameters are directional gain, quality factor, bandwidth and size of the antenna. By improving the parameters, we can enhance
more » ... , we can enhance the performance of the antenna. This article deals with few possible applications of complex materials such as artificial surfaces, artificial magnetic materials and electromagnetic band gap (EBG) structures also referred as photonic band gap (PBG) structures. Here in Artificial impedance surfaces to provide frequency selective surface impedance we have implemented the mushroom structure that was proposed by Sievenpiper. And, in Electromagnetic band gap structures to improve the antennas directivity we have formed the designs having periodically distributed metallic or dielectric rods or planar dielectric layers depending on the geometry of the antenna.
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