Design of a Wideband Flower-like Shape Metamaterial Reflectarray Antenna

Abstract

In this paper, a planar reflectarray antenna is designed. The designed structure consists of new types of metamaterial unit cells. Two different flower-like shaped unit cells were studied at the center frequency of 12.5 GHz. The reflectarray contains multi cells with varying sizes of flowers. A metal plate and an air gap layer are placed behind the metamaterial sheet. A standard Ku band horn antenna feeds the structure. The F/D ratio is unity for the designed reflect array. Compared to previous reflectarray antennas, the designed reflect array consists of a limited number of cells, i.e. 121. Also, a new method without any try-and-error process is presented. The width of the designed reflector is so compact. This proposed method can be used for a reflectarray antenna with gain in the range of 20 to 30dBi with acceptable radiation efficiency. The CST software is performed to simulate and optimize the proposed structure. There is a good agreement between simulation and measurement results.

Keywords:

• Reflectarray
• Unit cell
• Metamaterials
• Frequency selective surface
• Beam shaping

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Ebrahim Hadian

Ebrahim Hadian received his BTech degree in electrical engineering from the Arak University of Technology, Arak, Iran, in 2018, and his MTech degree in electrical engineering from the Qom University of Technology, Qom, Iran, in 2022. His research interests are electromagnetic waves, the design of microwave components, reflectarray antenna, metamaterial, metasurface, lens, and 5G. E-mail: [email protected]

Mohammad-Mahdi Taskhiri

Mohammad Mahdi Taskhiri received BTech, MTech, and PhD degrees in electrical engineering from the Iran University of Science and Technology (IUST), Tehran, in 2010, 2012, and 2017, respectively. He is currently an assistant professor with the School of Electrical and Computer Engineering, Qom University of Technology (QUT). His current research interests include numerical techniques for electromagnetics, inhomogeneous lenses, metamaterial structures, RFID, MEMS, transformation optics, and phased array antennas. Corresponding author. Email: [email protected]

Saeed Fakhte

Saeed Fakhte received the MTech, and PhD degrees in electrical engineering from the Iran University of Science and Technology (IUST), Tehran, in 2012, and 2017, respectively. He is currently an assistant professor with the School of Electrical and Computer Engineering, Qom University of Technology (QUT). His research interests are in various areas of microwave and antenna engineering, such as dielectric resonator antennas and microstrip antennas. E-mail: [email protected]

Dana Ramezani

Dana Ramezani Talabari received the BTech degree in electrical engineering from the Islamic Azad University, Yadegar Imam Branch, Tehran, Iran in 2017. He is currently pursuing MTech at the School of Electrical and Computer Engineering, Qom University of Technology (QUT). He has a patent for a Methadone Vending Machine. He has more than 12 years of experience in manufacturing industrial parts and telecommunication antennas. He specializes in the design of industrial mechanisms, equipment and CNC machines. E-mail: [email protected]