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Small embedded LTE/WWAN antenna integrated with keyboard ground plane in a laptop computer

Published online by Cambridge University Press:  30 August 2016

Shu-Chuan Chen ,
Yun-Tsan Lee  and
Po-Wei Wu
Shu-Chuan Chen*
Affiliation:
National Defense University, 75 Shiyuan Road, Daxi Township, Taoyuan County 33551, Taiwan, R.O.C. Phone: +886 985887647
Yun-Tsan Lee
Affiliation:
National Defense University, 75 Shiyuan Road, Daxi Township, Taoyuan County 33551, Taiwan, R.O.C. Phone: +886 985887647
Po-Wei Wu
Affiliation:
National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan, R.O.C.
*
Corresponding author: S.-C. Chen Email: chensc@ema.ee.nsysu.edu.tw
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Abstract

A novel small embedded long-term evolution/wireless wide area network (LTE/WWAN) antenna integrated with the keyboard ground plane in a laptop computer is presented. The antenna is installed on a notched region (40 × 8 mm2) of the keyboard ground plane at a distance of 10 mm from the laptop computer hinge. A coupled-fed loop antenna was used because of its suitability for integration with the ground plane and achieving wide operating bands. This antenna can not only be configured to have a compact configuration but also be designed to excite several resonant modes of the hinge slot between the display ground plane and the keyboard ground plane. The proposed antenna comprises a hook-shaped strip and a shorted strip, which together form a coupled-fed loop that not only has a compact size when printed on a 0.8-mm-thick FR4 substrate 40 × 8 mm2 in size but also provides eight-band LTE/WWAN operation. The proposed antenna can cover LTE/WWAN operation in the 698–960 and 1710–2690 MHz bands. Details of the antenna structure are provided here. The proposed antenna was fabricated and tested, and measurement and simulation results are presented. The measured antenna efficiency was approximately 45–80% in the lower band and approximately 52–75% in the upper band.

Keywords

LTE/WWAN antennasHinge slot antennasCoupled loop antennasComputer antennas
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 4 , May 2017 , pp. 959 - 964
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

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