本論文分別針對應用於船舶自動識別系統天線以及盲點與變換車道偵測模式之車用防撞雷達天線進行研究。有關船舶自動識別系統方面，乃提出單極天線之蜿蜒對稱設計，此設計可有效改善小型天線中彎折線段所造成輻射效率降低的問題，因此適合應用於小型天線設計。對於車用防撞雷達之應用，則以串列式饋入結構來設計貼片天線陣列，並進行相關前端電路設計，如巴倫器、濾波器、直流阻隔器、射頻阻絕器等，且製作出三款車用防撞雷達天線，其中並提出以雙邊耦合的技巧進行饋入，來進一步提升天線性能。

This thesis proposes antennas for the applications of the ship automatic identification system and the anti-collision radar system for the blind spot detection and the lane change assistant. For the ship automatic identification system, a symmetrical meander-line design for a monopole antenna is introduced. This design effectively improve the radiation efficiency of the meander-line antennas, particularly for a small antenna size in wavelengths. For the anti-collision radar system, serial-fed patch antenna arrays are designed. To integrate with a radar module, we also have to design some RF front end circuits to achieve system’s requirements, such as baluns, filters, DC blocks, and RF chokes. Three types of the serial-fed patch antenna arrays are proposed, which include a new approach to feed the patch elements by coupling from both sides of the feeding line to further improve the antenna performance.

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