Compact tri-band Wilkinson power divider based on metamaterial structure for Bluetooth, WiMAX, and WLAN applications

ABSTRACT

A novel Wilkinson power divider is presented in this paper for triple band operation. It comprises a Π-shaped transmission-line coupled to a rectangular split ring resonator metamaterial structure. The μ-negative feature of the rectangular split ring resonator metamaterial structure is investigated by retrieving its constitutive parameters from the S-parameter response. To demonstrate the versatility of the proposed Wilkinson power divider it was designed to cover Bluetooth (2.4 GHz), WiMAX (3.5 GHz), and WLAN (5.2 GHz). The tri-band Wilkinson power divider was fabricated and its performance measured to verify the design. Good agreement between the measured and simulated data is obtained. Measured results show that the tri-band Wilkinson power divider has fractional bandwidth of 3.86%, 5.82%, and 3.89% at 2.4, 3.5, and 5.2 GHz, respectively. In addition, the rectangular split ring resonator metamaterial Wilkinson power divider has a small physical footprint (14 × 17.9 mm² or 0.15λ_g × 0.19λ_g), which is 60% smaller than conventional designs.

KEYWORDS:

• Wilkinson power divider
• rectangular split ring resonator
• metamaterial
• negative permeability

ORCID

M. Amin Honarvar http://orcid.org/0000-0003-2347-0374

Additional information

Notes on contributors

Farzad Khajeh-Khalili

Farzad Khajeh-Khalili was born in Isfahan, Iran, in 1989. He received the M.Sc. degree with the highest honors in Telecommunication Engineering from the Islamic Azad University, Najafabad Branch, Iran in 2015. He is currently working toward the Ph.D. degree at the Islamic Azad University, Najafabad Branch. Since 2018, he is a faculty member of the Kian Institute of Higher Education, Shahin Shahr, Isfahan, Iran, as the head of Electrical Engineering Department. His research interests include metamaterials, MIMO antennas, microwave devices, circuits, and subsystems.

M. Amin Honarvar

M. Amin Honarvar was born in Shiraz, Iran in 1982. He received M.Sc. degree in Telecommunication Engineering from Shiraz University, Shiraz, Iran, in 2008, and Ph.D. degree from Science and Research branch, Islamic Azad University, Tehran, Iran, in 2012. Since 2012 he has been with the Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Isfahan, Iran, as an assistant Professor where he currently is a head of Electronics group. His research interests include Microstrip antenna, Meteamaterials and microwave circuit and components design.

Abdolmehdi Dadgarpour

Abdolmehdi Dadgarpour received the B.Sc. degree from Azad University of Jahrom, Fars, Iran, and the M.Sc. degree from Azad University Science and Research Branch, Tehran, Iran in 2005 and 2009, respectively, both in Telecommunication Engineering, and the Ph.D. degree in Telecommunications from the Energy, Materials and Telecommunications Center of the Institut National de la Recherche Scientifique (INRS-EMT), University of Quebec, Montreal, QC, Canada, in 2015. He is currently working as a Postdoctoral Fellow at Concordia University, Montreal, QC, Canada. His current research interests include Metasurface and Metamaterials for beamforming applications, design and analysis of high-gain Millimeter-wave antenna arrays.

Bal S. Virdee

Bal S. Virdee received the B.Sc. (Hons) degree and M.Phil. degree in communications engineering from the University of Leeds, Leeds, U.K., and the Ph.D. degree in electronic engineering from the University of London, London, U.K. He has worked in industry for various companies including Philips (U.K.) as an R&D engineer and Filtronic Components Ltd. as a future products developer in the area of RF/microwave communications. Previously he was a lecturer at several institutions. He is a Professor of Microwave Communications in the Faculty of Life Sciences and Computing at London Metropolitan University, where he Heads the Center for Communications Technology and is the Director of London Metropolitan Microwaves. His research, in collaboration with industry and academia, is in the area of microwave wireless communications encompassing mobile phones to satellite technology.

Tayeb A. Denidni

Tayeb A. Denidni received M. Sc. and Ph.D. degrees in electrical engineering from Laval University, Quebec City, QC, Canada, in 1990 and 1994, respectively. From 1994 to 2000, he was a Professor with the engineering department, Université du Quebec in Rimouski (UQAR), Rimouski, QC, Canada, where he founded the Telecommunications laboratory. Since August 2000, he has been with the Institut National de la Recherche Scientifique (INRS), Université du Quebec, Montreal, QC, Canada. He found RF laboratory at INRS-EMT, Montreal. He has a great experience with antenna design and he is leading a large research group consisting of three research scientists, six Ph. D students, and one M.Sc. student. He served as a principal investigator on many research project sponsored By NSERC, FCI and numerous industries. His current research areas of interest include reconfigurable antennas using EBG and FSS structures, dielectric resonator antennas, metamaterial antennas, adaptive arrays, switched multi-beam antenna arrays, ultra-wideband antennas, microwave and development for wireless communications systems. From 2008 to 2010, Dr. Denidni served as an Associate Editor for IEEE Transactions on Antennas Propagation. From 2005 to 2007, Dr. Denidni has served as an Associate Editor for IEEE Antennas Wireless Propagation Letters. Since November 2015, Dr. Denidni has served as an Associate Editor for IET Electronics Letters. Since 2004, he has been elevated to the grade of Senior Member of the IEEE. In 2012 and 2013, he was awarded by INRS for outstanding research and teaching achievements.