本論文主要研究應用於筆記型電腦上的長期演進技術LTE（Long Term Evolution）天線，第一種設計為一組合式天線設計，結合平面倒F形天線與單極天線設計，來得到足以涵蓋WWAN的頻帶操作；第二種設計為使用兩個天線來分別共振低頻與高頻的模態，使其可以涵蓋LTE 全頻操作；第三種設計使用切換天線頻率的想法，在天線本體加入二極體去進行低頻頻帶的切換，使其可以達到LTE全頻的頻寬，並在效率上也有不錯的表現。

The study of this thesis is LTE antenna designs for notebook application. The first design is a composite antenna design combining a planar inverted-F antenna and a monopole antenna, which can cover the WWAN band operation. The second design is to use two antennas to resonant lower band and higher band resonance modes separately. The design can cover the LTE band and have good radiation performance. The third design is an idea of antenna frequency band switching by adding a diode on antenna body. The antenna can cover the LTE band by switch lower frequency band and have a good performance.

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