华东师范大学学报（自然科学版） >

2018 , Vol. 2018 >Issue 1: 117 - 127

DOI: https://doi.org/10.3969/j.issn.1000-5641.2018.01.011

物理学与电子学

射频仿真系统中球面复合阵列近场效应研究

  • 程波 ,
  • 朱守正 ,
  • 付璐 ,
  • 卞嘉骏 ,
  • 于庭祥 ,
  • 朱伟华 ,
  • 王立权 ,
  • 庞旭东 ,
  • 张宇 ,
  • 柳超杰
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  • 1. 华东师范大学 电子工程系, 上海 200241;
    2. 上海机电工程研究所, 上海 200233
程波,男,硕士研究生,研究方向为复合阵列天线.E-mail:18767221382@163.com.

收稿日期: 2016-10-26

  网络出版日期: 2018-01-11

基金资助

上海机电工程研究所项目，（射频复合阵列目标近场修正及应用技术研究）

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Study on the near-field effect of spherical composite antenna arrays in the radio frequency simulation system

  • CHENG Bo ,
  • ZHU Shou-zheng ,
  • FU Lu ,
  • BIAN Jia-jun ,
  • YU Ting-xiang ,
  • ZHU Wei-hua ,
  • WANG Li-quan ,
  • PANG Xu-dong ,
  • ZHANG Yu ,
  • LIU Chao-jie
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  • 1. Department of Electronic Engineering, East China Normal University, Shanghai 200241, China;
    2. Shanghai Institute of Electromechanical Engineering, Shanghai 200233, China

Received date: 2016-10-26

  Online published: 2018-01-11

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摘要

射频复合阵列近场效应影响目标信号的测角精度，为了修正目标信号测角精度，提出一种方法：联合全波算法和一致性几何绕射理论，精确计算给定子阵，（三元组），天线在周围同频、异频天线单元存在的环境中发射时，接收天线位置处，（通常位于发射三元组的辐射近场），的电场分布；基于此电场相位分布，应用相位梯度法求出三元组辐射场的等效相位中心，并计算与基于幅度重心公式所得等效波源点位置的偏差，使用推导的辅助修正公式获得修正后的三元组各单元输入功率.计算实例表明：经修正后微波/毫米波三元组约束的三角形区域内最大垂直（俯仰）方向测角精度由1.50/2.37mrad，降低，0.06/0.06 mrad.

关键词： 三元组天线; 近场效应; 复合阵列; 等效相位中心

本文引用格式

程波 , 朱守正 , 付璐 , 卞嘉骏 , 于庭祥 , 朱伟华 , 王立权 , 庞旭东 , 张宇 , 柳超杰 . 射频仿真系统中球面复合阵列近场效应研究[J]. 华东师范大学学报（自然科学版）, 2018 , 2018(1) : 117 -127 . DOI: 10.3969/j.issn.1000-5641.2018.01.011

Abstract

The angular accuracy of target signal is affected by the near-field effect in the radio frequency composite array. This paper presents a new method to solve the problem. The radiation electric field distribution of a three-element sub-array located on the spherical composite antenna arrays at the receiving antenna location, which is usually located in the radiating near-field region, is precisely calculated by an hybrid technique of the full-wave algorithm and uniform geometrical theory of diffraction (UTD), in the case of the three-element array surrounded with its nearby elements working at same and different frequencies. The equivalent phase center of the three-element array is then obtained by the phase gradient algorithm (PGA) based on its phase distribution. The deviation of the equivalent phase center with that derives from the amplitude gravity center equation is calculated, which is used to find the corrected input power for each element antenna of the three-element array. The simulation results for a real composite antenna array system show that the maximum angular accuracy of pitching direction is corrected from 1.50/2.37 milliradian to 0.06/0.06 milliradian on the microwave three-element antenna and millimeter wave three-element antenna.

Key words： three-element array of antenna; near-field effect; composite array; equivalent phase center

参考文献

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