本論文為設計可應用於超寬頻(6-10GHz)室內人體呼吸與心跳感測器之天線，其在所應用的環境下，感測器天線特性能有良好的頻寬、天線增益、輻射效率及指向性輻射場型，並且由於超寬頻無線通訊系統一般是以脈衝來傳遞訊號，因此需考慮天線本身所造成的群延遲，以避免所傳遞訊號失真。
本論文首先提出一款立體式耦合架構之超寬頻天線設計，其中乃應用單極天線與寄生元件間的耦合效應來增大天線之工作頻寬，且立體式天線架構使用空氣作為其介質層來降低能量損耗，可使天線得到較佳的輻射效率，再以天線測詴版下層接地面作為其反射面，來增強天線增益與獲得指向性輻射場型。
由於上述立體架構天線在製程上較為複雜，本論文另提出一款製程較簡易的領結型2×1陣列天線設計。首先設計出一具有寬頻特性的領結型偶極天線與寬頻T型功率分波器，接著進行整合與適當調整，使其在所需操作頻帶內有良好的阻抗匹配、增益與輻射效率，並且利用感測器中位於天線測詴版後端另一無線通訊系統之接地面作為其反射面，以提高增益與得到指向性輻射場型。

In this thesis, the antennas to be applied in an ultra-wideband indoor human breathing and heartbeat sensor are proposed. In consideration of the application environments, antenna characteristics must have wide bandwidth, high gain,good radiation efficiency and directional radiation patterns. Also, since the ultra-wideband wireless communication system transmits pulse signals, the group delay of the antennas needs to be evaluated to avoid signal transmission distortions.
First, an ultra-wideband three-dimensional coupled antenna is proposed.Coupling effects between monopole antenna and parasitic elements are used to obtain wide operating bandwidth.Also, three-dimensional antenna architecture with air between the elements is applied to have good antenna radiation efficiency.Besides,a ground behind the antenna further enhances the antenna gain and achieve directional radiation patterns.
Secondly,a bow-tie 2 × 1 array antenna is proposed for cost effective solution. The broadband bow-tie dipole antenna and T-type power divider are designed to obtain good impedance matching, gain and radiated efficiency in the operating frequency band.Also, a metal reflector behind the antenna is used to obtain the higher gain and directional patterns.

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