| 一种应用于GPS和WLAN的高增益双频天线的设计 |
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| 引用本文： | 吴家国,周晓明. 一种应用于GPS和WLAN的高增益双频天线的设计[J]. 电子技术应用, 2012, 7(7): 113-115. DOI: 10.3969/j.issn.0258-7998.2012.07.037 |
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| 作者姓名： | 吴家国 周晓明 |
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| 作者单位： | 1.华南理工大学理学院,广东广州,510640;2.华南理工大学理学院,广东广州,510640 |
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| 摘 要： | 提出了一种适用于GPS(1.575 GHz)和WLAN(2.45 GHz)工作的双频天线设计.该天线采用相互嵌套的内外方形贴片结构,其中内、外贴片分别对应高端谐振频率点、低端谐振频率点.在内贴片上开尺寸较大的矩形槽,降低高端谐振频率,从而实现了1.55倍的频率比.外贴片采用切角的方法实现右旋圆极化(RHCP),在内贴片对角位置切去两个大小不同的三角形微扰元,用以补偿开槽给内贴片上电流路径带来的不对称性,实现了高端谐振频率点处的阻抗匹配.该天线具有增益高、小型化、易于制造等优点.
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| 关 键 词： | GPS WLAN 双频 圆极化 增益 |
Design of high-gain dual-frequency antenna for GPS and WLAN applications |
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| Wu Jiaguo , Zhou Xiaoming. Design of high-gain dual-frequency antenna for GPS and WLAN applications[J]. Application of Electronic Technique, 2012, 7(7): 113-115. DOI: 10.3969/j.issn.0258-7998.2012.07.037 |
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| Authors: | Wu Jiaguo Zhou Xiaoming |
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| Affiliation: | (College of Science,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | This paper presents a design of dual—frequency antenna applied in GPS(1.575 GHz) and WLAN(2.45 GHz).The antenna adopts a structure of nested inside and outside square patch.The inside smaller square patch operates at the high frequency and outside square patch operates at the low frequency.By slotting a rectangular slot in inside square patch,it reduces the high resonance frequency,then it realizes 1.55 times of the frequency ration.The outside patch realizes right-handed circular polarization(RHCP) through cutting corners.While inside patch cuts different sizes of triangle perturbation units to compensates the asymmetry of the current paths caused by the slot,then it can realize impedance matching at the high resonance frequency.The antenna has the advantage of high gain,miniaturization,and ease of manufacture. |
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| Keywords: | GPS WLAN dual—frequency circular polarization gain |
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