摘要
提出了一种新型微带馈电的,具有带阻特性的平面超宽带天线。该天线的辐射贴片与接地板是完全一样的,通过在辐射贴片背面加上寄生单元来获得对于无线局域网(WLAN)频段的带阻特性,对寄生单元的各个参数对带阻性能的影响进行了研究,可以方便地通过改变寄生单元的尺寸来改变阻断频带的位置。该天线易加工、便于集成,且方向图有很好的全向特性。测试结果表明,该天线对WLAN波段有很好的抑制功能,适合于超宽带系统使用。
A new planar UWB antenna with microstrip feed and triangular band notched characteristics is proposed.The shapes of radiation element and ground plane are exactly the same.The parasitic element is on the back of the radiation element to obtain the band-notched function and its parameters are studied in detail.Simulation results show that the band-notched function can be realized by the size of the parasitic element.The notched band can be changed by adjusting the size of the parasitic element.The antenna is easy to be processed and integrated.The proposed antenna presents omnidirectional radiation patterns across the whole operating band in the H-plane.Measured results confirm that the proposed antenna is good out of WLAN band and suitable for UWB applications.
出处
《微波学报》
CSCD
北大核心
2011年第1期19-21,31,共4页
Journal of Microwaves
关键词
超宽带
带阻功能
寄生单元
平面天线
UWB
band-notched function
parasitic element
planar antenna
