摘要
采用数值计算方法,将微波功率源输出信号的相位差视为等概率分布的随机事件,通过阵列天线平均增益定量计算了多微波源空间功率合成效率;分析了随机相位条件下,天线单元间耦合系数、极化方式和单元增益对合成效率的影响。计算结果表明:多微波源在随机相位条件下进行空间功率合成,阵列天线单元之间的相互耦合将造成合成效率严重下降;而天线类型、极化方式和天线单元增益对合成效率的影响较小。
Microwave power spatial synthesis from multi-source is an effective and widely used method to realize high power microwave radiation. In many cases, output power of high power microwave sources is with random phase shift because of their unstable property. This paper employs numerical calculations, deals with the phase shift of microwave sources which are even distribution and calculates the synthesis efficiency using the average gain of radiation antenna arrays. By numerical calculations, the impact of the coupling coefficient between antenna elements, the type and polarization of antenna arrays, and the antenna gain on the synthesis efficiency are analyzed. The analysis shows that the coupling between antenna elements may seriously reduce the synthesis efficiency; the effect of antenna type, polarization, and radiation gain on the synthesis efficiency is small.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2009年第7期1041-1044,共4页
High Power Laser and Particle Beams
基金
国家自然科学基金项目(10876020)
关键词
微波空间功率合成
随机相位
天线阵列
合成效率
microwave spatial power synthesis
random phase
antenna array
synthesis efficiency
