Scanning of the Near-field Focused Beam by Changing Frequency

Authors

  • Muhammad Sohail Department of Electrical and Electronic Engineering Eastern Mediterranean University, Famagusta, 99628, Northern Cyprus
  • Rasime Uyguroğlu Department of Electrical and Electronic Engineering Eastern Mediterranean University, Famagusta, 99628, Northern Cyprus
  • Abdullah Y. Öztoprak Department of Electrical and Electronic Engineering Cyprus International University, Nicosia, 99258, Northern Cyprus

DOI:

https://doi.org/10.13052/2023.ACES.J.380303

Keywords:

Beam shifting, focused beam, hypothermia, near-field focusing, patch antenna array

Abstract

A new antenna array system is introduced which enables the movement of a near-field focused beam by change of frequency. The shift in the beam is achieved by using multi-wavelength transmission lines between successive elements of the array. At the designed frequency the beam is focused at the focal point. Due to the differences in the transmission line lengths feeding the antenna elements, a progressive phase change occurs between these elements. These phase differences between the elements cause a shift in the beam position. An 8×8 patch antenna array system was designed at 2.4 GHz on a microstrip to implement the proposed system. Two substrates were used: one for the patch antenna array and the other one for the feed network and transmission lines. A full-wave simulation model was used to analyze this design and demonstrate the movement of the beam. For this design, the focused beam is moved 310 mm by changing the frequency from 2.2025 GHz to 2.5750 GHz.

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Author Biographies

Muhammad Sohail, Department of Electrical and Electronic Engineering Eastern Mediterranean University, Famagusta, 99628, Northern Cyprus

Muhammad Sohail received his B.S. degree in Electrical Engineering from City University, Pakistan, in 2013 and his M.S. degree in Electrical and Electronic Engineering from Eastern Mediterranean University in 2016. He is currently a Ph.D. student in the Department of Electrical and Electronic Engineering at Eastern Mediterranean University. His current research interests include planar antennas, arrays, and near field focusing of planar arrays.

Rasime Uyguroğlu, Department of Electrical and Electronic Engineering Eastern Mediterranean University, Famagusta, 99628, Northern Cyprus

Rasime Uyguroğlu received her B.S., M.Sc., and Ph.D. degrees in Electromagnetics and Antennas from the Electrical and Electronic Engineering Department, Eastern Mediterranean University. She is currently an Associate Professor at the same university and also serves as the Department Chair. Her research interests include computational methods in electromagnetics, Beam Forming Networks, Rotman Lenses, Microwave Antennas, and implant antennas. Dr. Uyguroğlu is a member of the IEEE.

Abdullah Y. Öztoprak, Department of Electrical and Electronic Engineering Cyprus International University, Nicosia, 99258, Northern Cyprus

Abdullah Y. Öztoprak received his Ph.D. degree in Electrical and Electronic Engineering from University College London, University of London, United Kingdom, in 1977. He was appointed at Eastern Mediterranean University (EMU) as Assistant Professor, Associate Professor, and Professor in 1986, 1988, and 1997 respectively. At EMU he served as Chairman of the Department of Electrical and Electronic Engineering (1989-1992), as Vice-Rector for Academic Affairs (1992-2003), and as Rector (2009-2014). Prof. Öztoprak’s research interests include Beam Forming Networks, Rotman Lenses, Microwave Antennas, Split-step Finite-Difference Time-Domain Methods, and Unconditionally Stable Finite-Difference Time-Domain Methods.

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Published

2023-03-31

How to Cite

[1]
M. . Sohail, R. . Uyguroğlu, and A. Y. . Öztoprak, “Scanning of the Near-field Focused Beam by Changing Frequency”, ACES Journal, vol. 38, no. 03, pp. 177–183, Mar. 2023.

Issue

2023: Vol 38 Iss 3

Section

General Submission

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