Miniaturized Multiband Reconfigurable Antenna at Sub-6 and mm-Wave Band Based on Fractal Geometry

Wole, Shimaa Shahab; Al Mashhadani, Mohammed K.

doi:10.37649/aengs.2024.151688.1091

	Miniaturized Multiband Reconfigurable Antenna at Sub-6 and mm-Wave Band Based on Fractal Geometry
Anbar Journal of Engineering Sciences
Volume 15, Issue 2, November 2024, Pages 100-111 PDF (1.31 M)
Document Type: Research Paper
DOI: 10.37649/aengs.2024.151688.1091
Authors
Shimaa shahab wole^* ¹; Mohammed K. Al Mashhadani²
¹Tikrit University, Electrical Engineering Dept. Iraq
²b Department of the Electrical Engineering, College of Engineering, University of Tikrit, Iraq
Abstract
This work presents a compact reconfigurable antenna based on fractal geometry. The investigation discusses the challenges of lower antenna gain and bandwidth, critical for efficient data propagation in 5G systems, particularly for low-profile devices. Its goal is to develop a small, multiband antenna capable of operating in all current and future 5G bands and improve bandwidth and gain for mm-wave and sub-6 GHz applications. The proposed design covers the sub-6 band (2.8, 3.9, 4, 6.2) GHz and the mm-wave band (24.4, 27.1, 28.5, 29.3, 30.6, 33.9, 34.6, 35.2, 38.8, 44.4, 45.1, 59.7, 61.5, 62.3, 65.2, 67.4 and 69.5) GHz with S11 less than -10 dB. A maximum gain of 12.8 dB and a radiation efficiency of 94% are achieved. A partial ground plane with a 50 Ω feed line is used in this design. The antenna is printed on a Roger RT 5880 substrate with a relative dielectric constant 2.2 with a total dimension of 35×32.5×0.8 mm³. The proposed design is simulated using CST software, ensuring accurate calculations and performance evaluation.
Keywords
reconfigurable antenna; 5G system; sub-6 GHz; mm-wave band

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