A miniaturized triple-band planar antenna combing single-cell metamaterial structure and defected ground plane for WLAN/WiMAX applications

Abstract

In this paper, a novel miniaturized triple-band planar monopole antenna combing single-cell metamaterial structure and defected ground plane is proposed. The miniaturization and triple-band characteristic of the antenna are achieved by loading the designed multiresonant metamaterial unit cell. Furthermore, a compact annular defected ground structure is proposed and used to improve the bandwidth of the antenna effectively. The presented metamaterial inspired triple-band antenna has a compact size and a simple structure. To verify the performances of the antenna, a prototype is manufactured and measured. The experimental results indicate that the presented antenna has enough operating bandwidth of the 2.38–2.48, 3.37–3.79, and 4.36–6.06 GHz to cover all the desired WLAN and WiMAX operations. And the tested results also demonstrate that this antenna has good omnidirectional radiation patterns and reliable gains in three required bands. Thus, the presented antenna has broad prospects in many wireless communication applications.

KEYWORDS:

• Triple-band antenna
• miniaturized antenna
• metamaterial structure
• defected ground plane

Disclosure statement

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

Additional information

Funding

This work was supported in part by the National Natural Science Foundation of China under Grant 61475084 and 61801267, and in part by the National Key Research and Development Program of China under Grant 2016YFC0302802.

Notes on contributors

Shiquan Wang

Shiquan Wang was born in Linyi, China. He received the B.S. degree in electronic information science and technology from Qilu University of Technology (Shandong academy of sciences) in 2017. He is currently pursuing the Ph.D. degree in electronic science and technology with the School of Information Science and Engineering, Shandong University, Qingdao. His current research interests include design and analysis of antennas, metamaterials, and microwave devices.

Kang Li

Kang Li was born in Jinan, China, in 1962. He received the B.S. and M.S. degrees in electrical engineering and the Ph.D. degree in optical engineering from Shandong University, Jinan, in 1984, 1987, and 2006, respectively. He is currently a Professor with the School of Information Science and Engineering, Shandong University. He is a member of IEEE (USA) and a reviewer of many International and National journals. His current research interests include metamaterial antennas, computational electromagnetics, and optical fiber communications.

Fanmin Kong

Fanming Kong received the B.S. and M.S. degrees in electrical engineering from Shandong University, Jinan, China, in 1991 and 1994, respectively, and the Ph.D. degree from the School of Physics, Shandong University, in 1999. He joined the Department of Electrical Engineering, Shandong University, in 1999, where he is currently a Professor with the School of Information Science and Engineering. His current research interests include design and analysis of antennas, microwave integrated circuits, and computational electromagnetics.

Liuge Du

Liuge Du was born in Shandong province, China. He received the B.S. degree in electronic science and technology, the M.S. and Ph.D. degrees in radio physic from Shandong University, Jinan, China, in 2005, 2008 and 2011, respectively. From 2011 to 2017, he was an engineer with the 41st research institute of China Electronics Technology Group Corporation (CETC). He is currently an Associate Professor with the electronic science and technology, Shandong University. He was the recipient of the Technological Invention Award (First Class) of CETC in 2016 and the Science and Technology Progress Award (First Class) of China Electronics Society in 2017. His current interests include metamaterial antennas, algorithm for microwave imaging, computational electro-magnetic and antenna measurement.