Integrated planar inverted-F antenna on laptop computer’s hinge for 2.4/5.2/5.8-GHz WLAN operation

ABSTRACT

A compact planar inverted-F antenna (PIFA) placed on one of the two hinges of a laptop computer is proposed for wireless local-area network (WLAN) operation. The aim of this design is to integrate the PIFA’s metal surroundings as part of the radiating structure. When the PIFA is fed, resonant modes in the hinge slot bounded by the two hinges, display ground plane, and keyboard ground plane can in turn be excited. Since the 200 × 5 mm² slot is much larger than the 10 × 5 mm² PIFA itself, the latter, although compact and structurally simple, can be made efficiently radiating with the help of the former. Measured efficiencies are all over 50% in the desired three WLAN bands

KEYWORDS:

• Hinge antennas
• laptop computer
• planar inverted-F antenna (PIFA)
• WLAN

Disclosure statement

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

ORCID

Chung-I. G. Hsu http://orcid.org/0000-0003-0942-8217

Additional information

Funding

This work was supported by Ministry of Science and Technology, Taiwan: [grant number MOST 104-2221-E-018-004].

Notes on contributors

Shu-Chuan Chen

Shu-Chuan Chen received the B.S. and M.S. degrees in electrical engineering from National Defense University Chung Cheng Institute of Technology, Taoyuan, Taiwan, and the Ph.D. degree in electrical engineering from National Sun Yat-sen University, Kaohsiung, Taiwan, in 1998, 2004, and 2012, respectively. Since 2012 she has been an assistant professor in the department of electrical and electronic engineering, Chung Cheng Institute of Technology, National Defense University, (CCIT, NDU), Taoyuan, Taiwan, where she became an associate professor in 2016. She also holds over 20 patents, including U.S., Taiwan, and China patents. Her main research interests are in internal antennas for mobile communication devices.

Chong-Wei Liou

Chong-Wei Liou received the B.S. degree in electronic communication engineering from National Kaohsiung Marine University, Kaohsiung, Taiwan, in 2014, and the M.S. degree in electrical engineering from National Yunlin University of Science and Technology, Yunlin, Taiwan, in 2016. His is now with Compal Electronics, Inc., engaging in the development and design of mobile RF circuits.

Chung-I. G. Hsu

Chung-I. G. Hsu graduated from the National Taipei Institute of Technology, Taipei, Taiwan, in 1980. He received the M.S. degree from the University of Mississippi, Oxford, MS, USA, in 1986, and the Ph.D. degree from Syracuse University, Syracuse, NY, USA, in 1991. In 1992, he joined the Department of Electrical Engineering, Dayeh University, Changhua, Taiwan, as an Associate Professor. Since 2008, he has been with the National Yunlin University of Science and Technology, Yunlin, Taiwan. His current research interests include antenna design and passive microwave circuit design.

Ming-Chan Hsu

Ming-Chan Hsu received the B.S. degree in communications engineering from Feng Chia University, Taichung, Taiwan, in 2014, and is currently pursuing the M.S degree in electrical engineering from National Yunlin University of Science and Technology, Yunlin, Taiwan. His main research interests are in internal antennas for mobile communication devices.