現代人們希望有更好更便利的生活模式，而將無線技術應用於生活環境上，
這樣的需求與日俱增，但隨之而來的是不斷的難題浮現出來。舉例來說，一般的民眾並不會真正的關心現代科技，他們關心的事，科技帶來給他們是什麼樣的生活模式，也因為如此，數位家電成為炙手可熱的市場，伴隨而來的是科學家，工程師不斷研發智慧型家電以因應數位家電需求。然而，輕薄短小的需求使的許多挑戰與難題浮現出來。
許多技術像是Wi-Fi、藍芽等等都是因為解決數位家電的無線個人區域網路而生，當中最強勁的對手莫屬超寬頻天線 (UWB)，此技術在頻寬、成本、功率消耗以及下一代消費型電子產品大小上的需求都有很好的表現，因此UWB天線的設計就變的非常重要。
本篇論文中，我們提出了漸變開槽共平面波導饋入的結構，並結合新的架構來達到體積縮小化的功能。我們做了大量參數分析及討論，以便了解參數如何影響天線效能。透過此方法，擁有分頻寬(Fractional Bandwidth)109%的微型化天線27mm乘24mm以及擁有分頻寬(Fractional Bandwidth) 127%的最佳化天線27mm乘24mm被分析及實現出來。這兩支天線在場型、體積、抑制鄰近物體效應，與主動性元件結合都有不錯的表現。

As the demand for applying wireless technologies to our environment to make it more convenient or even a better place to live is getting stronger, many difficulties is about to be on the horizon. For example, people outside the world normally don not really concern about technology that much or what are the cutting-edges nowadays in the world, but this is not the case when it comes to the technology related to their daily live or the way they live. That makes digital home applications a hot market and that also makes scientists and engineers create more intelligent appliance (AI) for digital home usage. However, those products are all getting smaller to meet the needs of consumer and hence more challenges and difficulties appear.
Several wireless technologies such as Wi-Fi, Bluetooth, etc, have been proposed for WPAN for digital home. One of them, UWB, emerges as a strong rival in wireless world since it provides a compelling solution for bandwidth, cost, power consumption, and physical size requirements of next-generation consumer electronics devices. Therefore, the antenna design for UWB radio plays the most important rule in digital home topic.
In this thesis, tapered-slot CPW-fed printed antenna is proposed with a novel structure featuring reduction of antenna size. An extensive parameter study is also conducted to get clear insight the effect of proposed structure on antenna performance and then the minimized antenna of 27mm by 24mm with fractional bandwidth 109% and optimum antenna with fractional bandwidth 127% are calculated, analyzed, and fabricated. Both of them exhibits well performance in terms of return loss, radiation pattern, size, ease of integration with active devices, and immunity to nearby objects. Those characteristics substantiate the entitlement to digital home applications.

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