多输入多输出
天线(收音机)
联轴节(管道)
计算机科学
被动式散热器
3G多输入多输出
电子工程
物理
频道(广播)
拓扑(电路)
偶极子天线
电信
电气工程
天线效率
工程类
机械工程
作者
Zhengyi Li,Z. Du,Masaharu Takahashi,Kazuyuki Saitô,Koichi Ito
标识
DOI:10.1109/tap.2011.2173432
摘要
Mutual coupling is a critical problem in the design of MIMO antennas because it deteriorates the performance of MIMO systems, which not only affects the antenna efficiency but also influences the correlation. Therefore, in this paper, using parasitic elements to reduce mutual coupling is studied. By adding parasitic elements a double-coupling path is introduced and it can create a reverse coupling to reduce mutual coupling. As an example, a dual-slot-element antenna with parasitic monopoles for mobile terminals is described. The discussion on channel capacity shows that the antenna can be considered as a good candidate for MIMO systems. Furthermore, based on the study of current distributions, it is concluded that the technique is sensitive to relative positions between parasitic elements, and relative positions between active element and parasitic element. Finally, we also extend the technique to a tri-element antenna.
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