應用於無線通訊系統之微縮化濾波天線陣列設計

Miniaturized Filtering Antenna Array Design for Wireless Communication Systems

陳昌賢(Chang-Hsien Chen)

指導教授 ： 吳瑞北

國立臺灣大學/電機資訊學院/電信工程學研究所/碩士(2016年)

https://doi.org/10.6342/NTU201603657

摘要

本論文提出整合功率分配器、濾波器和天線陣列的濾波天線陣列，並以垂直饋入。首先先設計傳統型功率分配器接上天線陣列，且採取垂直饋入的方式以改善電路面積，其次設計濾波天線陣列，分為1x2濾波天線陣列和1x4濾波天線陣列，並應用於5GHz上，最後再將此結構設計於38GHz上並做分析和討論。
結果顯示，在1x2濾波天線中，模擬上比例頻寬為3.5 %；量測比例頻寬為3.4 %，模擬上主要極化實際增益為8.54dB，量測結果為7.07dB，選擇度為40.65 dB/GHz。在1x4濾波天線中，模擬上比例頻寬為4.2 %；量測比例頻寬也為4.2 %，模擬上主要極化實際增益為10.2dB，量測結果為9.26dB，選擇度為79.09 dB/GHz。
與傳統並聯式天線陣列相比，濾波天線陣列可節省電路面積，並改善選擇度。

關鍵字

濾波天線陣列 ； 選擇度

並列摘要

This thesis proposed a filtering antenna array design which integrates filter, power divider and antenna elements with feeding using vertically connections. Firstly, a conventional corporate feed antenna array is designed which connected power divider and used vertically connection. Then, two kinds of filtering antenna array are designed, including 1x2 and 1x4 filtering antenna arrays.
The results show that in the 1x2 filtering antenna array, the simulation bandwidth is 3.5%; as opposed to the measured 3.4%. The main polarization realized gain is 8.54dB, as opposed to the measured value of 7.07dB, while the selectivity is 40.65 dB / GHz. In the 1x4 filtering antenna array, the simulation bandwidth is 4.2% and main polarization realized gain is 10.2dB, in good agreement with the measured values of 4.2% and 9.26dB, respectively. The selectivity is found to be 79.09 dB / GHz.
As compared with the traditional cooperate fed antenna array, the present design demonstrated the saving in the circuit area and improved selectivity.

並列關鍵字

filtering antenna array ； selectivity

參考文獻

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