Diversity antennas efficiencies enhancement

C. Tounou, C. Decroze, D. Carsenat, T. Monediere, B. Jecko
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引用次数: 17

Abstract

In this paper, a new method for enhancing ultra miniature diversity antennas efficiencies is shown. Antenna diversity is evaluated in terms of envelope correlation coefficient and diversity gain. Diversity gain can be related to antenna efficiencies. The so obtained diversity gain is called "efficient diversity gain". It is shown that the lower the mutual coupling, the higher antennas efficiencies, and the higher antennas efficiencies, the higher efficient diversity gains. To do so, a method to reduce mutual coupling between the antennas is developed by inserting a slot in the printed circuit board (PCB). The performances of the diversity handheld systems with and without slot are compared in terms of envelope correlation coefficient and efficient diversity gain. The advantage of this method lies in it easily implementation at the terminal side of a wireless link to obtain enhanced diversity antennas.
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分集天线效率提高
本文提出了一种提高超小型分集天线效率的新方法。用包络相关系数和分集增益来评价天线分集。分集增益与天线效率有关。这样得到的分集增益称为“有效分集增益”。结果表明,互耦越低,天线效率越高;天线效率越高,分集增益越高。为此,开发了一种在印刷电路板(PCB)中插入插槽的方法来减少天线之间的相互耦合。从包络相关系数和有效分集增益两方面比较了带时隙和不带时隙分集手持系统的性能。该方法的优点在于易于在无线链路的终端侧实现,以获得增强的分集天线。
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