超宽带脉冲辐射天线的馈源设计与优化  

Design and Optimization of Ultra-Wideband Impulse Radiating Antenna Feed

作　　者：孙博[1] 邱景辉[1] 林澍[1] 邓维波[1] 

机构地区：[1]哈尔滨工业大学电子与信息工程学院,哈尔滨150001

出　　处：《天津大学学报》2010年第12期1103-1108,共6页Journal of Tianjin University(Science and Technology)

摘　　要：为获得良好的超宽带特性和高增益特性,对脉冲辐射天线的馈源进行设计与优化.以梭形馈电臂结构为基础,通过电磁仿真着重研究了馈电臂边界形状和馈电臂间夹角对天线性能的影响,获得了各参数对天线性能的影响趋势及天线结构参数的最优值.对天线的实测结果表明,此脉冲辐射天线具有非常宽的阻抗带宽,其反射损耗低于-10,dB的频率范围达到0.97～18.8 GHz,同时天线具有较高的增益,在2～14 GHz范围内增益值为15.4～30.1 dB,测量结果与仿真分析吻合良好.该天线可以广泛地应用于超宽带通信、脉冲雷达等领域,具有非常广阔的应用前景.In order to obtain ultra-wideband and high gain, the feed of impulse radiating antenna was designed and optimized. Based on tapered feed arms, the effects of tapered shape and the angle between feed arms were studied using electromagnetic simulation. The tendency and degree of the effect of each parameter on antenna performance had been given, and the optimal design was obtained. The measurement results show that the impulse radiating antenna has extremely wide impedance bandwidth, and the frequency whose return loss is lower than -10 dB ranges from 0.97 GHz to 18.8 GHz. Meanwhile, the antenna has high gain, which is 15.4-30.1 dB within the frequency range of 2-14 GHz. The measurement results agree well with the simulation results. The antenna can be widely used in ultra-wideband communication and impulse radar systems and has broad application prospects.

关 键 词：脉冲辐射天线 超宽带 高增益 馈源 

分 类 号：TN82[电子电信—信息与通信工程]