應用於GPS/IMT2000/WLAN多頻段手機之寬頻平面單極天線

Broadband Planar Monopole Antenna forGPS/IMT2000/WLAN Mobile Handsets

吳俊文(Chun-Wen Wu)

《高雄海院學報》 18期 (2003/12) Pp. 35-48

摘要

本文將以共平面波導的饋入方式來設計出此寬頻平面單極天線的結構。在共平面波導饋入線上設計出此寬頻平面單極天線。並對此寬頻平面單極天線的變數做一趨勢的探討。由實驗結果可以發現，在矩形平面單極天線嵌入反U形槽孔，便有新的一個共振模態，而再矩形平面單極天線加上兩條平面金屬帶線之後，將會產生出寬頻的結果，其頻寬的可達60 %以上，頻段的應用範圍可包含GPS/IMT2000及WLAN的頻段。最後配合模擬軟體加以比較其差異，並對此結果加以探討。

關鍵字

共平面波導饋入 ； 平面單極天線 ； 寬頻

並列摘要

A novel broadband monopole antenna is proposed and experimentally studied by using coplanar waveguide feed. By embedding properly U-shaped slot in the rectangular monopole antenna and adding two strips in the bottom of the monopole antenna, the impedance bandwidth, determined from 10-dB return loss, can reach about 60.0% for the monopole antenna operating at GPS/IMT2000/WLAN bands. IE3D and Ansoft simulation software are used to identify with the measured results. Details of the proposed broadband design are described, and experimental results of the constructed prototypes are presented and discussed.

並列關鍵字

coplanar waveguide feed ； planar monopole antenna ； broadband