方向图主瓣 meaning in English
major lobe of directional diagram
majorlobeofdirectionaldiagram
Examples
- A calculation method and calculation results that show that a new kind of shaped paraboloid antennas can produce a ringy radiation pattern is presented
摘要通过数值计算发现：将抛物线绕通过焦点的非抛物线对称轴旋转而形成的赋形抛物面天线可产生环状的方向图主瓣（此主瓣指的是主瓣最大值处） 。 - In this dissertation , the mathematic model of optically controlled phased linearity array is established by basic theory of phased array radar . the problems of instantaneous bandwidth of ocpar and subarray number are researched , the relationship between the excursion of the direction pattern and subarray number , main lobe stretched - out of the direction pattern and bandwidth , side - lobe level of the direction pattern and subarray number , pulse compression and bandwidth , pulse compression and subarray number is analyzed . after corresponding simulations are done , a summary of advantages of ocpar compared with the traditional phased array radar is presented
针对x波段信号,仔细研究了光控相控阵的瞬时带宽问题和子阵数问题,分析了光控相控阵列方向图偏移与信号带宽及子阵数的关系,光控相控阵列方向图主瓣展宽与带宽的关系,方向图旁瓣电平与子阵数的关系,脉冲压缩与信号带宽及子阵数的关系,完成了相应的仿真,通过与普通相控阵的对比,总结出了光控相控阵相对于传统相控阵的巨大优势。 - The antenna is obtained by extending the longitudinal strip of the fin - line , and etched on a metallized dielectric substrate . it is operating at ka band ( center frequency : 34ghz ) , which has a good agreement between simulated and measured results . its e - and h - plane 3db main lobe beamwidth are 79 . 25 and 80 . 03 degrees respectively with sidelobes less than - 10db
天线工作的中心频率为34ghz , e面和h面测试方向图主瓣宽度分别为79 . 25o和80 . 03o ,旁瓣电平均小于- 10的db ,仿真和试验结果基本一致,所设计天线的各项指标经测试基本达到要求。