臺灣博碩士論文加值系統

本論文研究目標為利用液態金屬（Liquid Metal）之可重構特性，配合印刷天線的結構，依照不同通訊頻率的需求適時改變液態金屬之形狀，調整原印刷天線之結構以產生所需頻段之共振模態，達到頻率可重構之目的，同時使用HFSS模擬分析液態金屬對於天線的特性有何影響。
本論文提出的第一種天線架構為利用液態金屬配合通道模具、石墨棒電極與氫氧化鈉溶液，並利用三伏特的直流電壓使液態金屬移動，藉此去改變天線的輻射面的長度，並在達到目標長度後使用低壓去維持液態金屬的形狀與位置。
本論文提出的第二種天線架構為利用磁性液態金屬配合通道模具與小型銣鐵硼磁鐵在基板背面形成與天線圖形對稱的圖形或改變接地面的結構，並利用磁鐵吸引磁性液態金屬的方式改變其形狀或位置，使天線因為耦合的不同而改變共振頻率，並討論用液態金屬代替銅箔對頻率的影響。

This thesis aims to use the reconfigurable properties of liquid metal, to change the shape of liquid metal in time according to user’s requirement. Let the structure of the patch antenna have produce the frequency that we need. Also, analyze different shapes of liquid metal for antenna characteristics influence by using HFSS.
The first structure of the antenna in this thesis is using liquid metal, channel molds, graphite rod electrodes, low-concentration NaOH solution and three volts of DC voltage to move the liquid metal. Thereby change the length of the radiating surface. After the liquid metal is elongated, use a low voltage DC voltage to maintain its shape and position.
The second type of the antenna structure in this thesis consist of magnetic liquid metal, channel molds and small NdFeB magnets. When magnetic liquid metal affects frequency by forming a symmetrical shape on the back substrate or changing the structure, it will change the coupling so that the frequency can be reconfigurable.

摘要...........i
Abstract...........ii
誌謝...........iii
目錄...........iv
表目錄...........v
圖目錄...........vi
第一章 緒論...........1
第二章 文獻探討...........3
第三章 基礎理論...........8
3.1 巴比涅原理...........8
3.2 液態金屬...........10
3.3 液態金屬移動...........11
3.4 馬蘭哥尼效應...........13
3.5 電極材質選擇...........13
第四章 使用電壓控制液態金屬之可重構天線設計...........14
4.1 液態金屬製八木天線...........14
4.2 液態金屬製槽孔耦合天線...........20
4.3 電壓控制結果統整...........37
第五章 使用磁力控制液態金屬之可重構天線設計...........38
5.1 磁性液態金屬...........38
5.2 彎曲單極天線...........39
5.3 圓弧形槽孔接地面天線...........48
5.3 液態金屬與銅箔的比較...........59
5.4 磁力控制結果統整...........62
第六章 結論...........63
參考文獻...........65
Extended Abstract...........68

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