MIMO Mobile Handset Antenna Merging Characteristic Modes for Increased Bandwidth

被引:89
|
作者
Deng, Changjiang [1 ]
Feng, Zhenghe [1 ]
Hum, Sean Victor [2 ]
机构
[1] Tsinghua Univ, State Key Lab Microwave & Digital Commun, Tsinghua Natl Lab Informat Sci & Technol, Dept Elect Engn, Beijing 100084, Peoples R China
[2] Univ Toronto, Edward S Rogers Sr Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada
基金
中国国家自然科学基金;
关键词
Characteristic modes; mobile antennas; multifrequency antennas; multiple-input multiple-output (MIMO) systems; DESIGN; CHASSIS; TERMINALS; SYSTEM;
D O I
10.1109/TAP.2016.2537358
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The behavior of a mobile handset chassis-mode antenna with a metal bezel is analyzed in this paper by utilizing the theory of characteristic modes (TCM). Two eigenmodes, one from the chassis (0.5 lambda-dipole mode) and the other one from the bezel (1 lambda-perimeter mode), are merged by a monopole exciter to broaden the antenna bandwidth below 1 GHz. A new eigenmode from the bezel (1.5 lambda-perimeter mode) is also exploited to achieve multiple-input multiple-output (MIMO) performance. The characteristics of the antenna are verified with an experimental prototype and measurements. The measured input reflection bandwidths from the two ports are 263 MHz (742-1005 MHz) and 93 MHz (863-956 MHz), respectively. The port isolation is more than 7.4 dB across the whole band of interest. Finally, the monopole exciter, which excites two eigenmodes in the low-frequency band, is modified to provide more resonances in the upper frequency band, providing coverage in the range of 1715-2060 MHz and 2280-2710 MHz.
引用
收藏
页码:2660 / 2667
页数:8
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