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Investigation on novel wideband fractal antenna design based on cylindrical shape dielectric resonator
Authors:Kapil Gangwar  Anand Sharma  Gourab Das  Ravi K. Gangwar
Abstract:This article explains a novel approach for achieving wideband characteristics in case of dielectric resonator antenna (DRA). Wideband characteristic has been realized by uniting the concept of vastu purusha mandala (VPM)‐based fractal geometry with dielectric resonator antenna. VPM is Hindu religion‐based fractal geometry, which provides the advantage of decrease in volume to surface area of the radiator. This concept is useful to enhance impedance bandwidth of proposed antenna. For the purpose of validation, prototype of proposed antenna design has been fabricated as well as tested. After experimental testing, it is confirmed that the proposed radiator functions over the frequency range 2.6‐4.34 GHz with a percentage bandwidth of 46.52%. The proposed radiating arrangement provides peak gain of 6.3 dBi and stable far‐field characteristics. All these features make it applicable for WiMAX application (3.3 GHz).
Keywords:dielectric resonator antenna  fractal shape  Q‐factor  wideband antenna
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