在本論文中，我們將設計微小化及寬頻天線設計，以便可靈活應用於不同的機構中，接下來將分作三小節，對彎折式天線，衣領式陣列天線及超寬頻天線作模擬及實測，我們採用全波模擬軟體IE3D來模擬，再以FR-4板來實現天線，最後使用網路分析儀及微波暗室來對天線特性作S參數和場型的量測，以便了解天線實際特性。對於一個完整的無線通訊系統，天線及電路的結合是必要的，在本論文中，我們也將討論如何實現天線及電路間的阻抗匹配，來達到最大功率的輸出。

In this paper, we will design miniaturized and wideband antennas in order to apply in different environments. We will discuss about three kinds of antennas, meander-line antennas, bow-tie antennas and untra-wide band antennas in three sections. In these sections, we will do simulations by full-wave simulation software IE3D and realize them using FR-4. After all, we will measure the S parameters of three antennas by using a network analyzer and the patterns in a chamber to understand the real characteristics of three antennas. It is important to combine an antenna with the circuit for a completed system. We will also discuss how to realize the impedance matching between the antenna and the circuit to achieve the biggest power output in this paper.

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