許多技術像是Wi-Fi、藍芽等都可以說是為了解決數位家電的無線個人區域網路而生，其中最強勁的對手就是超寬頻天線(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。
在本文中探討應用於超寬頻(UWB)偶極天線，超寬頻(UWB)偶極天線從3.1 GH到 10.6 GHz頻寬7.5 GHz。因為3.1 GHz到10.6 GHz的頻寬會覆蓋到IEEE802.11a (in the U.S. 5.15–5.35 GHz, 5.725–5.825 GHz) and HIPERLAN/2 (in Europe 5.15–5.35 GHz, 5.47–5.725 GHz) Wireless LAN的頻帶，有些方法可以濾掉這些Wireless LAN的頻帶,像是常見的在輻射體割個U型slot等,而我們則利用減短兩旁偶合輻射體來達到band notched 5 GHz 到6 GHz Wireless LAN的頻寬，我們也做了一些的參數分析及討論，以便了解參數如何達到band notched Wireless LAN。最後並設計成陣列形式。

Several wireless technologies such as Wi-Fi, Bluetooth, etc, have been proposed for WPAN for digital home. One of them, UWB, emergess 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, we research dipole antennas used for UWB application which covers from 3.1 GHz to 10.6 GHz with a bandwidth of 7.5 GHz. UWB application also covers wireless LAN bands of IEEE802.11a (5.15–5.35 GHz and 5.725–5.825 GHz) in the U.S. and HIPERLAN/2 (5.15–5.35 GHz, 5.47–5.725 GHz) in Europe which we have to notch. There are some methods consisting of a U slot on the radiator to notch wireless LAN band. We achieve a notched frequency band between 5 GHz and 6 GHz by reducing coupled radiator the on the wnated band. We also analyze and discuss some parameters to implement wireless LAN band notch. We also design an antenna array in the end.

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