WLAN天線之設計與量測

Design and Measurement of WLAN Antennas

溫淑惠(Shu-Hui Wen)

指導教授 ： 孫卓勳

國立臺北科技大學/電資學院/電腦與通訊研究所/碩士(2011年)

https://doi.org/10.6841/NTUT.2011.00459

摘要

無線通訊技術在過去20年中改變了我們的生活，而WLAN是無線通訊技術中一項最重要的應用之一。在世界各地針對WLAN的需求大大的增加，因其提供了一個高速連接與容易存取而無需實體的線來連接的網路。
此篇論文主要著重於目前Wi-Fi，PDA與智慧型手機往輕薄短小發展的趨勢，來提出適合近來無線網路通訊系統的寬頻天線設計。在文中所討論的天線能找到適於無線網路IEEE802.11a/b/g/n及VoIP，Wi-Fi等無線系統的應用。這些天線是利用不同的形狀及排列的彎褶線與金屬片所組合而成的雙頻天線，於中心頻率2.35GHz (2.25-2.45GHz)，5.375GHz (5-6GHz) 各有大約200MHz與1,000MHz的頻寬。此些天線的頻帶能適用於頻寬適合被運用及發展於現代無線網路通訊系統如IEEE 802.11a（5.15-5.35GHz，5.47-5.825GHz)、IEEE 802.11b（2.4-2.485GHz)、IEEE 802.11g（2.4-2.485GHz)與IEEE 802.11n（2.4-2.485GHz，5.15-5.35GHz，5.47-5.825GHz)。

關鍵字

無線區域網路（WLAN) ； Wi-Fi ； 個人數位處理器（PDA) ； IEEE 802.11a/b/g/n ； 單極天線 ； 網路電話（VoIP)

並列摘要

Wireless communication technology has changed our lives during the passing decades. Wireless local area networks (WLAN) is one of the most important applications of the wireless communication technology. The demand for WLAN is becoming popular throughout the world in a greater extent, since it provides high speed connectivity and easy access to networks without wiring.
The study mainly focuses on the current trends in development of compact and low profile Wi-Fi PDA and smart mobile phone and provides a wideband monopole antenna design suitable for application in wireless LAN communication system in the near future.
The proposed antennas are applicable for wireless 802.11a/b/g/n and VoIP/WiFi wireless systems applications. The antennas with various shapes and arrangement of folded wire and metal patch radiator are for the applications and have bandwidths of about 200MHz with center frequency at 2.35GHz (2.25-2.45GHz) and 1,000MHz with center frequency at 5.375GHz (5-6GHz). The bandwidths specification can effectively cover the operation range as prescribed by IEEE 802.11a (5.15-5.35GHz and 5.47-5.825GHz), IEEE 802.11b (2.4-2.485GHz), IEEE 802.11g (2.4-2.485GHz) and IEEE 802.11n (2.4-2.485GHz, 5.15-5.35GHz and 5.47-5.825GHz).

並列關鍵字

Wireless local area networks (WLAN) ； Wi-Fi ； PDA ； monopole antenna ； IEEE 802.11a/b/g/n ； VoIP

參考文獻

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John Wiley & Sons, New York, 2003.

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[3]J.D. Kraus and R.J. Marhefka, Antennas for all