本論文先於印刷電路板製程，提出以創新架構實現全平面水陸兩用天線之設計。該水陸兩用天線以單極天線為主體，搭配特殊設計之水陸雙模態合成傳輸線，實現可自動切換之雙環境匹配網路，以達成天線於空氣與水中之同時匹配，使其操作於兩環境時均有良好之阻抗匹配及高輻射效率。該水陸兩用天線可大幅改善空氣模態之輻射效率，其改善幅度達137 %。經模擬與量測結果，充分驗證該天線具雙環境操作之特性。
本論文更進一步，以矽基板整合被動元件製程實現一款新型溶液檢測晶片。該晶片以雙模態合成傳輸線架構為基礎，運用其隨環境改變電氣響應之特點，觀察電氣響應之變化趨勢，建立介電常數預測模型，即可實現溶液檢測之功能。若與現有文獻相比，本晶片設計於實際應用時，僅需沾附一滴液體，即立刻改變原有之電氣響應，具有非常優秀的反應速度與便利性。
最後，吾人乃將該檢測晶片直接與天線進行整合，使晶片整合天線具備感測漏水之能力，其模擬與量測響應亦十分吻合，未來可實際應用於工業漏液檢測系統。

In this thesis, a fully planar amphibious antenna is developed with the printed circuit board (PCB) technology. The amphibious monopole antenna is realized by inserting a dual-operational mode matching network to the feeding line to achieve better impedance matching and higher radiation efficiency when operating both in the air and water. The proposed matching network simply consists of a dual-operational mode synthesized transmission line and a common delay line. Benefiting from the unique properties of the matching network, the total efficiency of the amphibious antenna can be significantly improved up to 137 % when operating in the air. The simulated and measured results are compared to verify the operation principle of the antenna.
Secondly, an on-chip liquid detecting sensor based on dual-mode synthesized transmission lines is studied and realized on the silicon-based integrated passive device (IPD) process. Benefiting from the synthesized transmission line, the electrical response of the sensor could be dramatically changed when the chip is covered by a liquid drop with different compound. By collecting the experimental data, it is possible to create a simple model for estimating the complex permittivity of the liquid under test. Comparing with the liquid detecting sensors in the literature, the proposed one can verify the electrical characteristic of the liquid even with a small drop.
The on-chip liquid detecting sensor could also be integrated with an antenna to facilitate water leaksensing. The simulated and measured results are in good agreement, which supports the applicability of the proposed design to practical systems.

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