摘要
针对频率分集阵列天线的发射方向图随时间变化的问题,提出了一种脉冲体制频率分集阵列天线稳态波束形成方法,并对其发射方向图特性进行分析.频率分集阵列天线在天线单元间采用微小的频率步进可形成距离角度二维依赖的发射方向图.相比传统相控阵天线,频率分集阵列天线无需移相器,因此其具有成本低、复杂度小以及适合阵列天线小型化设计等优点.同时,其天线发射方向图的距离角度二维依赖特性,大大提高了阵列天线波束扫描的灵活性.仿真实验验证了本文方法的有效性.
Focused on the time-varying property of the transmit beampattern of the frequency diverse array, a static transmit beamforming method is proposed to control the beampattern of the pulsed frequency diverse array, and the characteristics of its radiating pattern are studied. With a tiny progressive incremental frequency shift applied between the adjacent antenna elements, a range-angle dependent radiating pattern is achieved. Compared with the conventional phased array, the frequency diverse array is low in price and small in complexity without the use of phase shifters, which enables it to be suitable for the miniaturization design of an array antenna. Moreover, its range-angle dependent characteristic significantly enhances the flexibility of antenna beam scanning. Simulation experiments demonstrate the effectiveness of the proposed method.
作者
徐艳红
史小卫
文珺
XU Yanhong SHI Xiaowei WEN Jun(Science and Technology on Antenna and Microwave Lab., Xidian Univ., Xi＇an 710071, China School of Computer ＆ Electronic Information, Guangxi Univ., Nanning 530004, China)
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2016年第5期41-45,166,共6页
Journal of Xidian University
基金
国家自然科学基金资助项目(61571356
61461007)
关键词
频率分集阵列
脉冲体制
发射方向图
波束扫描
距离角度依赖
frequency diverse array
pulse configuration
radiation pattern
beam scanning
range-angle dependent
