Gain-enhanced PEC reflector backed slot-loop antenna

Abstract

This paper proposes a low-cost, gain-enhanced, wideband, perfect electric conductor (PEC) reflector backed antenna. The proposed antenna consists of a rectangular loop with an internal inset-fed rectangular patch, a pair of symmetrical L-shaped interdigitated radiating branches, and a PEC reflector. The antenna has compact dimensions of 36 mm × 17.5 mm × 7.2 mm. The proposed antenna satisfies a −10 dB reflection coefficient bandwidth from 7.94 GHz to 14.45 GHz. To understand the operating principle of the proposed antenna, this paper presents a modal analysis. The gain performance is improved by using the constructive superposition of in-phase electromagnetic energy from the side edges of the rectangular loop and the two vertical edges of the radiating branches. In addition, the experimental and simulated results of the proposed antenna are in good agreement.

Keywords:

• Slot-loop antenna
• low-cost
• gain enhancement
• wideband
• in-phase superposition

Disclosure statement

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

Additional information

Funding

This work was supported by the Human Resources Development Program (No. 20194010201860) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea Government Ministry of Trade, Industry and Energy.

Notes on contributors

Yunnan Jin

Yunnan Jin received his BS in Telecommunication Engineering from Yanbian University of Science and Technology, Yanji, China, and his PhD degrees from Hanyang University, Seoul, Korea, in 2013 and 2019, respectively. He is an author of over 15 international articles and conference papers, and an inventor of 6 patents. His current research interests include antenna theory and design, especially for 4G/5G communications, massive MIMO, mmWave, and various high-gain antenna. He serves as a reviewer for Microwave and Optical Technology Letters and International Journal of Electronics and Communications.

Jaehoon Choi

Jaehoon Choi received his BS degree from Hanyang University, Korea, and his MS and PhD degrees from Ohio State University, OH, USA in 1980, 1986, and 1989, respectively. From 1989 to 1991, he served as a research analyst at the Telecommunication Research Center at Arizona State University, Tempe, AZ, USA. He worked for Korea Telecom as a team leader of the Satellite Communication Division from 1991 to 1995. Since 1995, he has been a professor in the Department of Electronics and Computer Engineering at Hanyang University, Korea. He has published more than 130 refereed journal articles and numerous conference proceedings. He also holds over 40 patents. His research interests include antenna, microwave circuit design, and EMC (Electromagnetic Compatibility). Currently, his research is mainly focused on the design of compact multi-band antennas for mobile wireless communication and antennas for biomedical applications.