應用於無線區域網路之一MIMO天線間電波隔離設計

Isolation Design between MIMO Antenna for WLAN applications

鄭皓中(Hao-Chung Cheng)

指導教授 ： 周錫增

元智大學/電機通訊學院/通訊工程學系/碩士(2008年)

摘要

研究在有限面積(48*30mm)下擺放三組平面式天線，在這狹小的面積內有三組天線，在天線與天線之間隔離度必然變差。本論文主要研究如何增加平面式天線的隔離度，使用了許多方式來改善隔離度包 括增加接地面積、加上一些對電波有影響的材質如阻抗性反射板 (R-Card)、在PCB 上挖狹槽來增加電流過的路徑等，使得天線的輻射場形改變等…。最後以實際測試方式來比較改善的程度。

關鍵字

antenna isolation ； antenna coupling ； MIMO

並列摘要

The purpose of this research is to improve the isolation among antennaelements of MIMO application. The primary challenge is to reduce coupling between two antennas placed in reactive coupling region.
Several methods were attempted, including adding a stub on the ground, adding R-card between antennas and cutting slot on the ground.Both simulation and measurement were performed and the advantages & disadvantages of each method are also presented in the thesis.

並列關鍵字

天線隔離度 ； 天線互耦合 ； 多天線

參考文獻

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