Citation

Azzouz, Abdelbasset and Bouhmidi, Rachid and Munir, Mehr E and Sheraz, Muhammad and Chuah, Teong Chee and Lee, It Ee (2025) Coaxial-Fed Crossed Bowtie Sierpinski Fractal Multiband Antenna Design and Analysis. In: 2025 Multimedia University Engineering Conference (MECON), 21-23 July 2025, Cyberjaya, Malaysia.

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Abstract

This paper presents the design and analysis of a compact multiband crossed bowtie Sierpinski gasket fractal antenna for advanced wireless communication applications. The proposed antenna, with dimensions of 45 mm × 45.5 mm and fabricated on an FR4 substrate of 0.8 mm thickness, employs a coaxial probe feed to achieve optimal performance. The design demonstrates resonance at five frequencies: 0.99 GHz, 2.69 GHz, 5.87 GHz, 7.63 GHz, and 9.02 GHz, with corresponding return losses of -14.97 dB, -32.42 dB, -27.21 dB, -18.70 dB, and -25.03 dB. The Voltage Standing Wave Ratio (VSWR) at these frequencies is well within the acceptable range, recorded as 1.44, 1.04, 1.10, 1.30, and 1.12, respectively. The antenna exhibits impedance bandwidths of 80 MHz, 70 MHz, 90 MHz, 120 MHz, and 130 MHz across the operating bands, and achieves a maximum gain of 4.23 dBi. Full-wave electromagnetic simulations were carried out using Ansys HFSS v15 to evaluate the antenna’s performance. The fractal geometry enhances multiband performance while maintaining a compact size, making the antenna suitable for modern multiband communication systems. Detailed analysis of the return loss, VSWR, bandwidth, and gain confirms the potential of the design for integration into advanced wireless networks.

Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	Bowtie antenna, Fractal antenna
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television
Divisions:	Faculty of Artificial Intelligence & Engineering (FAIE)
Depositing User:	Ms Rosnani Abd Wahab
Date Deposited:	17 Mar 2026 07:18
Last Modified:	17 Mar 2026 08:12
URII:	http://shdl.mmu.edu.my/id/eprint/15526

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