Low profile octa‐band antenna without lumped elements for WWAN/LTE metallic narrow‐frame tablet computers

A low profile octa‐band antenna with a small size of 74 × 5 × 0.8 mm3 for the WWAN/LTE metallic narrow‐frame tablet computer is proposed. The antenna consists of a driven strip and a ground strip. A gap of 2.5 mm in width is disposed at the top of metallic frame, and a T‐shaped open slot is formed b...

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Bibliographic Details
Published in:Microwave and optical technology letters 2019-03, Vol.61 (3), p.665-670
Main Authors: Chen, Chu‐Hui, Jiao, Yong‐Chang, Weng, Zi‐Bin
Format: Article
Language:English
Subjects:
Antennas
Bandwidths
low profile
metallic narrow‐frame
Mobile communication systems
octa‐band
open‐slot antenna
Pen based computers
Portable computers
tablet computer antenna
Tablet computers
Wireless communications
WWAN/LTE antenna
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Summary:A low profile octa‐band antenna with a small size of 74 × 5 × 0.8 mm3 for the WWAN/LTE metallic narrow‐frame tablet computer is proposed. The antenna consists of a driven strip and a ground strip. A gap of 2.5 mm in width is disposed at the top of metallic frame, and a T‐shaped open slot is formed by the ground clearance and the metallic frame. As a result, additional slot resonant modes can be excited, and the operating bandwidth of the antenna is widened. With only 5 mm ground clearance, the antenna successfully covers all WWAN/LTE bands without any lumped elements. The antenna is fabricated. The measured results show that the antenna operates in 698‐960 and 1710‐2690 MHz bands with good radiation efficiencies. The proposed antenna is suitable for the metallic narrow‐frame tablet computer applications.
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.31643