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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/49883
標題: | 結合分枝耦合器之微小化寬頻圓極化晶圓級封裝天線 Design of Miniaturized Wideband Circularly Polarized Patch Antenna with Branch Line Coupler in InFO |
作者: | Yu-Chien Chiu 邱郁蒨 |
指導教授: | 吳瑞北 |
關鍵字: | 分枝耦合器,微小化寬頻圓極化天線,晶圓級封裝, branch-line coupler,CP antenna,InFO-WLP, |
出版年 : | 2016 |
學位: | 碩士 |
摘要: | In this paper, we proposed a 38GHz compact and wideband circularly polarized patch antenna design with branch line coupler using InFO-WLP (Integrated Fan-Out Wafer-Level-Packaging) technology using vertically connection in InFO-WLP to miniature size. Firstly, we design a branch-line coupler which can provide two same magnitude output but 90 degrees phase difference. After this, it comes to dual-fed square patch antenna. Lastly, we connected branch-line coupler and square patch antenna by TIVs. By orthogonally fed, it becomes a perfect circularly polarized patch antenna.
Miniaturized The design concept of miniaturized and compact CP antenna is almost the same as traditional dual-fed CP antenna. What’s difference between them is the proposed antenna is vertically stacked in order to compact size, we also utilize InFO-WLP technology to reduce path loss and power consumption. Additionally, smaller form factor and high quality factor are two of advantages of InFO-WLP. We use two different feeding structure to achieve our goal. One is coupling-fed and the other one is microstrip line-fed. The results suggested that the coupling-fed one’s impedance bandwidth is 33.3%, 3dB axial ration bandwidth is 17.65%, 3dB gain bandwidth is 8.07% and useful bandwidth is 8.07%. And microstrip line-fed one’s impedance bandwidth is 33.1%, 3dB axial ration bandwidth is 32.41%, 3dB gain bandwidth is 12.8% and useful bandwidth is 12.8%. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/49883 |
DOI: | 10.6342/NTU201601792 |
全文授權: | 有償授權 |
顯示於系所單位: | 電信工程學研究所 |
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