Sub-6 GHz Quad-Band Reconfigurable Antenna for 5G Cognitive Radio Applications

Authors

  • Sivakumar Ellusamy Department of Electronics and Communication Engineering SRM Institute of Science and Technology, Chennai, Tamilnadu 603203, India
  • Ramachandran Balasubramanian Department of Electronics and Communication Engineering SRM Institute of Science and Technology, Chennai, Tamilnadu 603203, India

Keywords:

Narrow band, PIN diode, quad-band, reconfigurable, square patch, stub, tunable, ultra wide band

Abstract

This article describes a quad-band frequency tunable antenna for 5G applications that operates in the sub-6 GHz frequency range. On the top side, a stubloaded square patch is printed on an inexpensive glass epoxy substrate, and on the opposite side, a C-shaped slot embedded into the partial ground plane. To achieve frequency reconfigurability with a consistent radiation pattern, the C-shaped slot and matching stub are used. The antenna is electronically frequency tunable by placing two positive intrinsic negative diodes (PIN) in the C-shaped slot and one PIN diode between the stub and feed line. The frequency is tunable between one ultra-wideband (UWB) and three communication bands based on the switching conditions of the PIN diodes. The proposed configuration is small, with a substrate dimension of 25×25×1 mm3. The antenna was fabricated, tested and found measurements result back up the simulation; it can switch between UWB (3.31.0-6.03 GHz) and three communication modes (3.31-4.32, 3.78- 4.98, 4.98-5.96 GHz). The antenna has peak gains of 1.91, 1.86, 2.0 and 2.0 dB, and radiation efficiencies of 80, 78, 83 and 86%, respectively, in the four frequency bands. The developed antenna is ideally suited for multi-functional wireless systems and cognitive radio applications since it covers the frequency bands below 6 GHz and is tunable between wide and narrow bands.

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Author Biographies

Sivakumar Ellusamy, Department of Electronics and Communication Engineering SRM Institute of Science and Technology, Chennai, Tamilnadu 603203, India

E. Sivakumar received his M.Tech in Applied Electronics in 2006 from Dr M.G.R Educational Research Institute of Science and Technology. He is pursuing Ph.D. in SRM Institute of Science and Technology, India. His research interest includes antenna design, reconfigurable antennas, RF and microwave circuit design.

Ramachandran Balasubramanian, Department of Electronics and Communication Engineering SRM Institute of Science and Technology, Chennai, Tamilnadu 603203, India

B. Ramachandran received his bachelor’s degree in Electronics and Communication Engineering from Thiagarajar College of Engineering, Madurai, in 1990 and master’s degree in Satellite Communications from National Institute of Technology, Trichy, in 1992. He obtained his Ph.D. degree in the area of Wireless Mobile Networks from Anna University, Chennai, in 2009. At present, he is working as Professor at SRM University in Chennai. He authored a textbook on digital signal processing. His teaching and research interests include digital communication, wireless networks, UWB antenna design, network security, and mobile computing. He has published 37 research papers in national and international conferences and journals. He was awarded IETE-SK Mitra Memorial Best Research Paper Award in 2009. He is a member of ISTE, and fellow of IE(I) and IETE.

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Published

2021-10-21

How to Cite

Ellusamy, S. ., & Balasubramanian, R. . (2021). Sub-6 GHz Quad-Band Reconfigurable Antenna for 5G Cognitive Radio Applications. The Applied Computational Electromagnetics Society Journal (ACES), 36(08), 1015–1025. Retrieved from https://journals.riverpublishers.com/index.php/ACES/article/view/11765

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