一种具有三阻带和高频截止特性的超宽带天线 |
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引用本文: | 唐丹,郭庆功.一种具有三阻带和高频截止特性的超宽带天线[J].电子元件与材料,2013,32(6). |
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作者姓名: | 唐丹 郭庆功 |
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作者单位: | 四川大学电子信息学院,四川成都,610064 |
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摘 要: | 为了有效抑制超宽带(UWB)通信系统和窄带通信系统之间潜在的干扰,设计了一款具有三阻带特性和高频截止特性的超宽带天线。天线总尺寸为33 mm×19 mm×1 mm。该天线的辐射单元由一个椭圆形的单极子和一个倒梯形结构组成,由50的矩形微带线馈电,接地板由一个矩形和一个开槽梯形结构构成。对天线进行加工并测试。结果表明,该天线在3.3~3.6 GHz处的阻带由辐射单元上的凹形槽产生,5.15~5.35 GHz和5.725~5.825 GHz处的阻带由微带馈线两旁的U形寄生单元产生,10.8 GHz高频处的截止特性是由微带线两旁对称的凹形寄生单元共同决定的。天线的测试结果与仿真结果吻合良好。
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关 键 词: | 超宽带天线 三阻带 寄生单元 凹形槽 微带线 仿真 |
UWB antenna with three band notches and high frequency rejection capability |
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Abstract: | In order to suppress potential interference between UWB system and narrowband communication system effectively,a UWB antenna with three band-notched and high frequency rejection capability was designed.The magnitude of the antenna was 33 mm×19 mm×1 mm.The antenna radiated patch was consisted of an oval-shaped monopole an inverse trapezoid structure and feed by 50 microstrip lines,and the ground plate was constituted by a rectangle and a grooved trapezoid structures.The antenna was made and detected.Results show that the band notch of 3.3-3.6 GHz is achieved by the concave slot on the radiated patch,while the U-shaped parasitic elements on both sides of the feed line respectively generate band-notches at 5.15-5.35 GHz and 5.725-5.825 GHz,two symmetric concave parasitic elements on both sides of the feed line,which cut off the out-of-band frequency above 10.8 GHz.Comparisons between the measured and simulated results show that the antenna has a good radiation characteristic. |
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Keywords: | UWB antenna three band-notches parasitic elements concave slot mitrotrip line simulation |
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