| 一种小型平面陷波超宽带天线 |
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| 引用本文： | 褚庆昕,杨颖颖.一种小型平面陷波超宽带天线[J].华南理工大学学报(自然科学版),2008,36(9). |
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| 作者姓名： | 褚庆昕 杨颖颖 |
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| 作者单位： | 华南理工大学,电子与信息学院,广东,广州,510640 |
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| 摘 要： | 本文提出了一种应用于超宽带系统的带陷波结构的共面波导馈电小型平面超宽带天线.天线采用印刷电路板上的矩形贴片作为辐射单元，并由同一面上的共面波导(CPW)馈电，通过在矩形贴片上开一个C形槽来实现陷波功能，电磁仿真软件Ansoft HFSS10的仿真结果显示，合适地选择C形槽的尺寸可以调整陷波的中心频率和带宽.仿真及实验结果表明，该天线在3.1-10.6GHz工作频段内电压驻波比小于2，在5-6GHz范围内具有陷波特性，有效地阻隔了无线局域网(WLAN)系统对超宽带(UWB)系统的影响，在整个工作频段内有稳定的增益和良好的辐射方向特性.
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| 关 键 词： | 陷波特性 共面波导馈电天线 C形槽 超宽带天线 |
| 收稿时间： | 2007-10-12 |
| 修稿时间： | 2007-12-1 |
A Compact Planar Ultra-wideband Antenna with a Frequency Notch Characteristic |
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| Chu Qing-xin,Yang Ying-ying.A Compact Planar Ultra-wideband Antenna with a Frequency Notch Characteristic[J].Journal of South China University of Technology(Natural Science Edition),2008,36(9). |
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| Authors: | Chu Qing-xin Yang Ying-ying |
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| Abstract: | A compact and simple design of a CPW-fed planar antenna for ultra-wideband application with a band-notch characteristic is presented. The proposed antenna consists of a rectangular metal patch on a printed circuit board fed by a 50- coplanar waveguide (CPW). By cutting a C-shaped slot in the rectangular radiating patch，a frequency band notch will be created. The proposed antenna yields an impedance bandwidth of 3.1-10.6GHz with VSWR<2，except the bandwidth of 5-6GHz for WLAN. The bandwidth and central frequency of the notched band can be adjusted with ease by proper selection of C-shaped slot parameters simulated by the electromagnetic software Ansoft HFSS 10. The antenna is successfully simulated，designed，and measured showing broadband matched impedance，stable gain and good radiation patterns. |
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| Keywords: | band-notch characteristics coplanar waveguide fed antennas C-shaped slot ultra-wideband antennas |
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