摘要
针对目前高功率微波相位难以精确控制的情况,结合高功率微波空间功率合成的应用,对有源天线阵列的平行波束和交叉波束的空间功率合成作了初步研究。分析表明:当关注的是远区主方向邻近的小立体角区域时,若能做到控相激励,宜采用紧凑阵的平行波束合成;若不能控相,宜采用稀疏阵的平行波束合成。当关注的是远处目标物邻近的区域时,若能做到控相激励,宜采用紧凑阵的平行波束合成;若不能控相,则宜采用稀疏阵的交叉波束合成,但波束交汇区域能量呈网状分布,进行阵布局、倾斜角设计时,要在目标尺度、目标距离、单源功率、工作频率等诸多因素间权衡考虑。
Considering that the phases are hard to controll accurately for the high power microwaves, the spatial powers combining of both parallel beams and intersectant beams is investigated. It is concluded that when a small solid angles range adjacent to the main direction in the far field is considered, the parallel beams combining of compact antenna arrays has its priority if the phases can be controlled,and the parallel beams combining of sparse antenna arrays has its priority if the phases can not be controlled. When a small area in the far field is considered, the parallel beams combining of compact antenna arrays has its priority if the phases can be controlled, and the intersectant beams of sparse antenna arrays has its priority if the phases can not be controlled. On the account of the energy＇s gridded distribution at the intersection of the intersectant beams, one should take into ac- count such factors when designing the intersectant beams antenna arrays, as target size, distance, source power, frequence and so on.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2007年第6期915-918,共4页
High Power Laser and Particle Beams
基金
国家863计划项目资助课题
关键词
高功率微波
天线阵
空间功率合成
平行波
交叉波
High power microwave
Antenna arrays
Spatial powers combining
Parallel beams
Intersectant beams
