相位正态分布条件下的微波合成效率  

Efficiency of microwave combination with normal phase error

作　　者：蒋廷勇[1,2] 宁辉[2] 邵浩[2] 刘小龙[2] 耿宝刚[2] 

机构地区：[1]清华大学工程物理系,北京100084 [2]西北核技术研究所高功率微波国防科技重点实验室,西安710024

出　　处：《强激光与粒子束》2015年第8期108-112,共5页High Power Laser and Particle Beams

基　　金：国家高技术发展计划项目

摘　　要：针对多台高功率微波源组阵进行功率合成时相位离散分布的问题,基于数理统计方法对合成阵元相位误差呈正态分布情况下阵列合成效率进行了理论分析,提出了相位误差有界分布下其概率密度函数的表达式,修正了相位分布标准差较大时微波功率合成效率的理论计算公式。为验证修正后的理论公式正确性,使用数值模拟方法计算了合成阵列天线阵元激励信号相位误差呈正态分布下的空间功率合成效率,计算结果表明,数值模拟结果与理论分析给出的计算结果吻合得较好,修正后空间功率合成效率公式的预估精度得到有效提高。With the background of research on high power microwave source power combined efficiency with random phase,the impact of random phase errors with normal probability distribution on power combined efficiency of antenna array was calculated.A modified normal probability density function with bounded phase error was used to analyze the microwave power combined efficiency.As an example,a 10×10elements antenna array with normal probability phase error distribution was used to simulate the relationship between the standard error and the combined efficiency.It shows that the calculation precision was improved obviously with the corrected power combined efficiency,providing reference to the research of high power microwave power combination.

关 键 词：高功率微波 功率合成 合成效率 随机相位 

分 类 号：TN788[电子电信—电路与系统]