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Cylindrical air spaced high gain dielectric resonator antenna for ultra-wideband applications

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Abstract

A new geometry of ultra-wideband (UWB) hollow dielectric resonator antenna (DRA) has been designed, simulated, and fabricated. The antenna consists of a rectangular dielectric resonator and excited by a transformer type microstrip feedline. A hollow cylindrical-shaped structure is extracted from a rectangular DR to improve the gain and impedance bandwidth of the antenna. The present work shows that the shifting within the UWB range along with the gain enhancement is observed by increased diameter of the hollow structure and the use of defective ground structure in the ground plane. The antenna provides four different radiating modes, namely TE11δ at 3.8 GHz, TE22δ at 6.4 GHz, TE Z231 at 8.8 GHz, and TE33δ at 10 GHz that support to give widen impedance bandwidth. The simulated and measured results are in good agreement as an impedance bandwidth of 104.09% (3.28 to 10.4 GHz) and 103.86% along with a peak gain of 7.2 dB.

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Acknowledgement

Authors are thankful to prof. M V Kartikeyan, IIT Roorkee, India for providing the support in antenna measurement.

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Authors and Affiliations

  1. Electronics and Communication Engineering Department, Thapar Institute of Engineering and Technology (Deemed to be University), Badson Road, Patiala, India

    Sachin Kumar Yadav, Amanpreet Kaur & Rajesh Khanna

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  1. Sachin Kumar Yadav
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  2. Amanpreet Kaur
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  3. Rajesh Khanna
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Correspondence to Sachin Kumar Yadav.

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Yadav, S.K., Kaur, A. & Khanna, R. Cylindrical air spaced high gain dielectric resonator antenna for ultra-wideband applications. Sādhanā 45, 163 (2020). https://doi.org/10.1007/s12046-020-01409-y

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  • DOI: https://doi.org/10.1007/s12046-020-01409-y

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