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頁籤選單縮合
題名 | 應用於超寬頻系統之共面波導饋入圓碎形天線設計=CPW-Fed Circular Fractal Antenna for UWB Applications |
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作者 | 曾炳豪; 劉智群; 朱浩奎; 張道治; | 書刊名 | 健行學報 |
卷期 | 35:3 2015.07[民104.07] |
頁次 | 頁1-15 |
分類號 | 448.813 |
關鍵詞 | 共面波導饋入; 圓碎形天線; 超寬頻天線; 單極天線; 超寬頻通訊系統; CPW-fed; Circular fractal antenna; UWB antenna; Monopole antenna; UWB communication systems; |
語文 | 中文(Chinese) |
中文摘要 | 本文提出了一種共面波導饋入方式的圓碎形超寬頻單極天線。此圓碎形天線是在介電常數εr = 4.4、厚度 h=1.54mm的玻璃纖維基板(FR4)上進行設計。天線量測結果顯示在返回損耗小於-10dB時,天線的頻帶寬度範圍為3.05-11.1 GHz,相對頻寬百分比達到113.78 %。場型分別量測3.8 GHz、6.8 GHz與10.6 GHz三個頻率點,在x-z平面顯示出幾乎為全向性的輻射場型,在y-z平面則呈現出上下輻射的方向性場型,場型量測結果皆表現出良好的輻射特性。在 3.1-10.6 GHz頻帶內所量測出的增益值振幅範圍落在2.75-5.05 dBi內。本文使用3D電磁模擬軟體對此圓碎形天線的頻率響應、輻射場形、天線增益與電流分佈特性進行模擬。模擬結果和量測結果非常一致。此圓碎形超寬頻天線可以廣泛應用於商業超寬頻無線通訊系統與醫學影像領域中。 |
英文摘要 | This paper proposes a CPW-feed ultra wideband circular fractal monopole antenna. The circular fractal antenna was designed on a fiber glass substrate (FR4) with dielectric constant εr = 4.4 and thickness h = 1.54 mm. The measured result shows that the return loss is less than -10dB from 3.05 GHz to 11.1 GHz, corresponding to an impedance bandwidth of 113.8%. The radiation patterns were measured at 3.8 GHz, 6.8 GHz and 10.6 GHz. The results show good omni-directional patterns in x-z plane and directional patterns in y-z plane. The gain of the designed antenna ranges from 2.75 dBi to 5.05 dBi within 3.1 GHz to 10.6 GHz. The frequency response, radiation pattern, gain and current distribution of the designed circular fractal antenna were simulated with 3D Electromagnetic software. The simulated and experimental results of this antenna are in good agreement. This type of circular fractal antennas can be widely used in commercial ultra wideband wireless communication systems and medical imaging filed. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。