High-Gain Modified Antipodal Vivaldi Antenna for Ultra-Wideband Applications

Authors

  • S. A. Adamu Faculty of Engineering, Universiti Malaysia Sarawak, 94300 K/Samarahan, Sarawak, Malaysia.
  • T. Masri Faculty of Engineering, Universiti Malaysia Sarawak, 94300 K/Samarahan, Sarawak, Malaysia.
  • W. A. W. Zainal Abidin Faculty of Engineering, Universiti Malaysia Sarawak, 94300 K/Samarahan, Sarawak, Malaysia.
  • K. H. Ping Faculty of Engineering, Universiti Malaysia Sarawak, 94300 K/Samarahan, Sarawak, Malaysia.
  • S. A. Babale Wireless Communication Centre, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia.

Keywords:

Corrugation, Dielectric Director, Surface Current, Ultra Wideband,

Abstract

In this paper, the design of a high gain modified antipodal Vivaldi antenna (HG-MAVA) for ultra-wideband applications is presented. The proposed antenna designed on a low-cost FR4 substrate with a thickness of 1.6mm was realized by incorporating a combination of exponential slot edge corrugation on the radiating flare and a high permittivity dielectric director in the flare aperture of a conventional antipodal Vivaldi antenna (CAVA). Compared to the CAVA, the proposed antenna extends the lower end frequency limit of the CAVA to 2.15 GHz. Improvement in realized gain is also achieved throughout the 2.15 GHz to more than 11 GHz operating frequency band of the proposed antenna with the highest improvement of 1.61 dBi at 7 GHz. The surface current distribution and the radiation pattern of the proposed antenna were studied to further characterize the performance of the antenna.

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Published

2018-03-01

How to Cite

Adamu, S. A., Masri, T., Zainal Abidin, W. A. W., Ping, K. H., & Babale, S. A. (2018). High-Gain Modified Antipodal Vivaldi Antenna for Ultra-Wideband Applications. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 10(1-12), 55–59. Retrieved from https://jtec.utem.edu.my/jtec/article/view/3826

Issue

Vol. 10 No. 1-12: Gearing for a Greener Future

Section

Articles

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