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Gain and Bandwidth Enhancement of Tetracuspid-shaped DRA Mounted with Conical Horn

  • Pramod Kumar , Santanu Dwari , Utkarsh , N. K. Agrawal and Jitendra Kumar EMAIL logo
From the journal Frequenz

Abstract

A novel Tetracuspid-shaped dielectric resonator antenna (DRA) mounted with conical horn is presented and investigated for broadband applications. The dielectric used for investigation is a ceramic composite material having a dielectric constant (εr) of 12.9. Tetracuspid-shaped resonator geometry achieves a broadband impedance bandwidth of 70.9 % for |S11|<‒10 dB, ranging from 2 GHz to 4.2 GHz. Tetracuspid-shaped reduces the DRA volume by 78 % (without horn) as compared to conventional cylindrical DRA; with reduced volume of 14.4 cm3 which diminishes the cost and weight. Gain of proposed antenna is further enhanced up to 9.5 dBi in operating band by mounting a conical horn. Achieved average peak gain is ~7 dBi. Proposed antenna covers bands of different wireless communication systems like Wi-Max and WLAN (2.4 GHz, 2.5 GHz, 3.3 GHz and 3.5 GHz). The simulated results are validated by experimentally measured outcomes and these are well in agreement.

Acknowledgements

The authors would like to acknowledge Prof. Navneet Gupta, Head of the Department, Electrical & Electronics Engineering, Birla Institute of Technology and Science, Pilani, Rajasthan, India and Raj Singh, Scientific Officer-G (SOG), Institute for Plasma Research, Gandhinagar, Gujarat India, for their support and motivation.

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Received: 2017-07-02
Published Online: 2018-04-06
Published in Print: 2018-06-26

© 2018 Walter de Gruyter GmbH, Berlin/Boston

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