High Directivity Broadband Hexagonal Fractal Ring Antenna with Modified Ground

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Tharanga Premathilake
Jeevani Jayasinghe
Omar Saraereh
Karu Esselle
Rajas Khokle

Abstract

A highly directive fractal antenna with a novel shape is proposed in this paper. Finite Element Method based simulations were carried out on the first three iterations of a hexagonal fractal ring and the performance was measured in terms of the resonant behavior, directivity, radiation efficiency, current distribution, and radiation pattern. The second iteration fractal antenna radiates well along the broadside direction at the fundamental mode of operation. The ground plane was modified to improve the performance further. The antenna, etched on an FR4 substrate, has a directivity of 11.8 dB along the broadside direction with multi-frequency broadband performance over the frequency range of 3.12-7.46 GHz. Therefore, the proposed fractal antenna can be used for Wireless LAN applications. The antenna was fabricated and measured in order to validate the results.

Article Details

How to Cite
Premathilake, T., Jayasinghe, J., Saraereh, . O., Esselle, K., & Khokle, R. (2020). High Directivity Broadband Hexagonal Fractal Ring Antenna with Modified Ground. ECTI Transactions on Electrical Engineering, Electronics, and Communications, 18(1), 1–8. https://doi.org/10.37936/ecti-eec.2020181.239914
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Author Biographies

Tharanga Premathilake, Wayamba University of Sri Lanka

Department of Electronics

Jeevani Jayasinghe, Wayamba University of Sri Lanka

Department of Electronics

Omar Saraereh, Hashemite University

Department of Electrical Engineering

Karu Esselle, Macquarie University

School of Engineering

Rajas Khokle, Macquarie University

School of Engineering

References

[1] D. Chakerian, & B. Mandelbrot, "The Fractal Geometry of Nature” The College Mathematics Journal, 15, 1984, 175.

[2] J. Anguera, C. Puente, C. Borja, & J. Soler, "Fractal Shaped Antennas: A Review," Encyclopedia of RF and Microwave Engineering, 2005.

[3] J. Anguera, A. Andújar, J. Jayasinghe, D. Uduwawala, M.K. Khattak, and S. Kahng, “ Nature-Inspired High-Directivity Microstrip Antennas: Fractals and Genetics”, Computational Intelligence and Communication Networks, 8th International Conference on, pp. 204-207, 2016.

[4] J. Jayasinghe, A. Andújar, J. Anguera, “On the properties of Sierpinski Gasket Fractal Microstrip Antennas”, Microwave and Optical Technology Letters, Vol. 61, No. 3, pp. 772-776, 2019.

[5] J. Anguera, C. Puente, C. Borja, R. Montero, and J. Soler, “Small and high‐directivity bow‐tie patch antenna based on the Sierpinski fractal”, Microwave and Optical Technology Letters, Vol. 31, No. 3, pp.239-241, 2001.

[6] K. Siakavara, “Novel fractal antenna arrays for satellite networks: Circular ring Sierpinski carpet arrays optimized by genetic algorithms”, Progress In Electromagnetics Research, 103, pp.115-138, 2010.

[7] J. Romeu, C. Borja, and S. Blanch, “High directivity modes in the Koch island fractal patch antenna”, Antennas and Propagation Society International Symposium, Vol. 3, pp. 1696-1699, 2000.

[8] A.B. Younas, Z. Ahmed, and M.B. Ihsan, “A new high-directivity fractal antenna based on the Modified Koch Snowflake geometry”, In Microwave Conference Proceedings (APMC), Asia-Pacific, pp. 191-194, 2010.

[9] P. Chandrasekhar, P.G. Kumar, and K. Santhosh, “Study on fractal microstrip fork antenna with enhanced directivity”, International Journal of Application or Innovation in Engineering & Management, Vol.4, No.3, pp.80-84, 2015.

[10] J. Anguera, A. Andújar, S. Benavente, J. Jayasinghe, and S. Kahng, “High-directivity microstrip antenna with Mandelbrot fractal boundary”, IET Microwaves, Antennas & Propagation, Vol. 12, No. 4, pp.569-575, 2017.

[11] M. Akbari, S. Gupta, M. Farahani, A.R. Sebak, and T.A. Denidni, “Gain enhancement of circularly polarized dielectric resonator antenna based on FSS superstrate for MMW applications”, IEEE Transactions on Antennas and Propagation, Vol. 64, No. 12, pp.5542-5546, 2016.

[12] H. Zhou, Z. Pei, S. Qu, S. Zhang, J. Wang, Z. Duan, H. Ma, and Z. Xu, “A novel high-directivity microstrip patch antenna based on zero-index metamaterial,” IEEE Antennas and Wireless Propagation Letters, Vol. 8, 538–541, 2009.

[13] R.M. Hashmi, B.A. Zeb, and K.P. Esselle, “Wideband high-gain EBG resonator antennas with small footprints and all-dielectric superstructures”, IEEE Transactions on Antennas and Propagation, Vol. 62, No. 6, pp.2970-2977, 2014.

[14] L. Kurra, M.P. Abegaonkar, A. Basu, and S.K. Koul, “FSS properties of a uniplanar EBG and its application in directivity enhancement of a microstrip antenna,” IEEE Antennas and Wireless Propagation Letters, Vol.15, pp.1606-1609, 2016.

[15] E. El-Khouly, H. Ghali, and S. A. Khamis, “High directivity antenna using a modified Peano space-filling curve,” IEEE Antennas and Wireless Propagation Letters, Vol.6, 405–407, 2007.

[16] H.D. Yang, N. G. Alexopoulos, and E. Yablonovitch, “Photonic band-gap materials for high-gain printed circuit antennas,” IEEE Transactions on Antennas and Propagation, Vol. 45, No. 1, 185– 187, 1997.

[17 ] M.U. Afzal, and K.P. Esselle, “Quasi-analytical synthesis of continuous phase correcting structures to increase the directivity of circularly polarized Fabry-Perot resonator antennas” Journal of Applied Physics, Vol. 117, No. 21, p.214902, 2015.

[18]J.M.J.W. Jayasinghe, J. Anguera, and D.N. Uduwawala, "Genetic algorithm optimization of a high-directivity microstrip patch antenna having a rectangular profile", Radioengineering, Vol.22, No. 3, 700-707, 2013.

[19] Y. Ge, K.P. Esselle, and Y. Hao, “Design of low-profile high-gain EBG resonator antennas using a genetic algorithm” IEEE Antennas and Wireless Propagation Letters, 6, pp.480-483, 2007.

[20] R. Singha, and D. Vakula, “Compact ultra‐wideband fractal monopole antenna with high gain using single layer superstrate”, Microwave and Optical Technology Letters, 59(2), pp.482-488, 2017.

[21] A.M. de Oliveira, J.F. Justo, M.B. Perotoni, S.T. Kofuji, A.G. Neto, R.C. Bueno, and H. Baudrand, “A high directive Koch fractal Vivaldi antenna design for medical near‐field microwave imaging applications”, Microwave and Optical Technology Letters, Vol. 59, No. 2, pp.337-346, 2017.

[22] C. Borja, G. Font, S. Blanch, and J. Romeu, “High directivity fractal boundary microstrip patch antenna”, Electronics Letters, Vol.36, No.9, pp.778-779, 2000.

[23] A. Singh, and S. Singh, “A modified coaxial probe-fed Sierpinski fractal wideband and high gain antenna” AEU-International Journal of Electronics and Communications, Vol.69, No.6, pp.884-889, 2015.

[24] B. Biswas, R. Ghatak, and D.R. Poddar, “A Fern Fractal Leaf Inspired Wideband Antipodal Vivaldi Antenna for Microwave Imaging System”, IEEE Transactions on Antennas and Propagation, Vol. 65, No.11, pp.6126-6129, 2017.