一种新型具有陷波特性的宽带单极子天线  

A Novel Wideband Monopole Antenna with Band-Notched Characteristics

作　　者：张强[1] 金杰[1] 李茜[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《微波学报》2016年第6期6-10,44,共6页Journal of Microwaves

基　　金：国家自然科学基金(61571320)

摘　　要：设计了一款新型的具有陷波特性的超宽带单极子天线。该天线的带宽为3.1~12.0 GHz,通过在矩形辐射贴片上制作出对称的梯形结构、中心加载倒C形缝隙、矩形开槽,并将窄矩形接地板切除两个边角,制作矩形开槽结构,使得天线在3.3~5.35 GHz频段产生陷波特性。该天线结构紧凑,尺寸仅为20 mm×25 mm×1.0 mm。建立天线模型,并对其进行仿真和优化。研究表明,天线在Wi MAX频段、C波段、数字微波通信、大容量微波通信和部分WLAN等多个频段产生良好的陷波特性,且在工作频段内有良好的性能和辐射方向特性。A novel ultra-wideband monopole antenna with band-notched characteristics is proposed. With a bandwidth of 3.1 -12.0 GHz, by fabricating symmetric trapezium structure, a reversed C-shaped slot in the center and a rectangular slot on the patch, besides, the narrow rectangular ground with a rectangular slot on one side and two edges are moved, the notch band of 3.3 -5.35 GHz are obtained. The proposed antenna has a compact volume of 20 min×25 mm× 1.0 mm. A prototype is designed, simulated and optimized. Results show that this antenna has nice band-notched characteristics for WiMAX, C band, digital radio system, large capacity microwave communication and partial WLAN band, also good perform- ance and radiation characteristics during its operating frequency band.

关 键 词：超宽带 单极子天线 陷波特性 开槽结构 

分 类 号：TN821.3[电子电信—信息与通信工程]