摘要
该文设计制作了一种新型实用的超宽带磁天线。天线采用平衡馈电,文中对天线的回波损耗、辐射性能和时域响应进行了数值仿真和实验测试。在驻波比小于2时天线有107%的阻抗带宽,大约100%的方向图带宽,工作频段完全覆盖超宽带通信频谱。研究表明,天线有大于5dB的平稳增益,能够不失真地传播脉冲波形。而且由于磁场能量占优,不易于与近场物体互耦,特别适合于室内等物体繁杂的地方应用,有非常强的实用价值。
A novel compact UWB magnetic antenna is designed and manufactured. This antenna has a balanced feed , moreover, numeric simulations and experiments are carried out to investigate its return loss, radiation behavior, and time-domain response. The antenna offers 107% impedance bandwidth under VSWR〈2 and 100% radiation bandwidth, which covers ultra wideband frequency spectrum applications. The achieved performance in the band has fairly constant〉5dB gain, and suitability for pulse transmission with minimized distortions. Further more, it have relatively large magnetic near-fields that are difficult to undesired coupling with near-by objects, so it is very suitable for application to some environment cluttered up with objects such as home. It makes some sense to the application.
出处
《电子与信息学报》
EI
CSCD
北大核心
2009年第4期1004-1006,共3页
Journal of Electronics & Information Technology
基金
国家自然科学基金(60551002)资助课题
关键词
磁天线
超宽带
脉冲
平衡馈电
Magnetic antenna
UItra-wideband
Pulse
Balance-fed
