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Journal of Electromagnetic Waves and Applications Volume 28, 2014 - Issue 8
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Articles

Chassis mode tuning for electrically small antennas of mobile phones

J.W. ZhongShanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai200050, China;Lenovo Research Shanghai Branch, Lenovo Plaza, Shanghai201203, China
,
Y.J. FangLenovo Research Shanghai Branch, Lenovo Plaza, Shanghai201203, ChinaCorrespondence[email protected]
,
L. MaLenovo Research Shanghai Branch, Lenovo Plaza, Shanghai201203, China
&
X.W. SunShanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai200050, China
Pages 989-998 | Received 18 Nov 2013, Accepted 25 Feb 2014, Published online: 27 Mar 2014
 
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Abstract

Nowadays, more attention has been placed on the chassis modes of electrically small antennas. Besides the antenna radiating element itself, the chassis (ground plane) also has non-negligible contribution to the performance of the antenna system. Properly exciting chassis modes can effectively expand antenna’s working bandwidth and improve its radiation efficiency. In this paper, a novel approach of exciting chassis modes will be demonstrated numerically and practically. It can be seen that by tuning the ground plane geometry, desired chassis mode is excited and the antenna performance is improved.

Funding

This work was partially supported by the National Basic Research Program of China (973 Program) [grant number 2009CB320207].

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