天线阻抗特性对开关振荡器输出脉冲的影响
Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams(2013)
Abstract
以单锥天线和螺旋天线作为开关振荡器辐射天线为例,采用等效电路模型和商业电磁仿真软件,分别对天线末端电压振荡信号和辐射电场脉冲进行了研究.研究结果表明:采用行波天线或者电长度与振荡器一致的振子天线作为辐射天线,都能够产生中心频率与振荡器本征频率一致的电磁脉冲信号;但采用振子天线时,振荡信号持续时间较短(Q值较低),频谱上能量较分散,带宽较宽,而采用行波天线则脉冲持续时间较长(Q值较高),频谱上能量较集中,带宽较窄.
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Key words
Element antenna,Switched oscillator,Traveling wave antenna,Wideband electromagnetic pulse
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