北京航空航天大学学报 ›› 2018, Vol. 44 ›› Issue (5): 914-922.doi: 10.13700/j.bh.1001-5965.2017.0347

• 论文 • 上一篇    下一篇

微小空间内电磁干扰要素检测与辨识方法

凌波1,2, 林赟2, 孙宏涛2, 苏东林1   

  1. 1. 北京航空航天大学 电子信息工程学院, 北京 100083;
    2. 中国航空工业集团公司成都飞机设计研究所, 成都 610091
  • 收稿日期:2017-05-22 出版日期:2018-05-20 发布日期:2017-09-18
  • 通讯作者: 苏东林 E-mail:sdl@buaa.edu.cn
  • 作者简介:凌波,男,博士研究生,研究员。主要研究方向:航空电子武器综合设计、电磁兼容与电磁环境;林赟,男,研究员。主要研究方向:射频综合系统设计、电磁兼容防护设计;孙宏涛,男,硕士,工程师。主要研究方向:系统级电磁兼容设计、飞行器电磁环境效应测试技术;苏东林,女,博士,教授,博士生导师。主要研究方向:电磁兼容、电磁环境效应、计算电磁学、射频微波电路与系统、新型飞行器机载共形/共用/小型化天线等。
  • 基金资助:
    国家自然科学基金(61427803)

Detection and identification method of electromagnetic interference elements in limited-space

LING Bo1,2, LIN Yun2, SUN Hongtao2, SU Donglin1   

  1. 1. School of Electronic and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
    2. AVIC Chengdu Aircraft Design & Research Institute, Chengdu 610091, China
  • Received:2017-05-22 Online:2018-05-20 Published:2017-09-18

摘要: 针对射频传感器综合一体化带来的电磁兼容性接口由机箱、连接器和线缆变为背板-模块,使常规电磁干扰(EMI)检测要求和检测手段无法直接适用于模块的问题,基于电磁干扰要素理论,着重研究了综合射频机架内部微小空间内电磁干扰要素检测方法及原理,探索了综合射频机架微小空间下模块电磁发射特征信息的测试方法,研究了综合射频机架工作状态及功能线程的激励控制方法,以及综合射频机架远场电磁发射特性数据、功能模块近场电磁发射特性数据和综合射频机架接口线缆束上的电流传导发射特性数据等电磁干扰要素提取和识别方法。为验证电磁干扰要素检测与辨识方法的可行性,以某机载综合射频机架为例,开展了大量试验研究与分析,包括综合射频机架远场电磁发射特性测试、功能模块近场电磁发射特性测试、综合射频机架互连线缆束电流传导发射特性测试,并将多种工作模式下模块测试结果和综合射频机架电磁发射测试结果进行比较,验证了本文方法的可行性和准确性。

关键词: 综合射频, 微小空间, 射频模块, 电磁兼容, 电磁干扰(EMI)

Abstract: It is an inevitable trend that more and more divided RF systems are integrated into one rack for the new generation airborne electronic equipment development. However, the "module-based" electromagne-tic compatibility requirements, evaluation methods and other new electromagnetic compatibility issues have been inevitably brought out by the RF integrated technology's change from "device-based" design to "mo-dule-based" design. According to the principals of electromagnetic interference (EMI) element, the EMI detection theory and testing techniques for emission features of RF module in limited-space of integrated racks are researched and discussed, as well as the simulating measures of RF function thread. A novel methodology is proposed for EMI detection and identification in limited-space from the far-field radiation features of integrated racks, near-field emission features of function module and the conducted current emission features of integrated racks' interfacing cables. Many experimental tests are carried out upon one real airborne RF integrated racks by the research team, including far-field radiation tests, near-field emission tests of function module as well as cable current emission tests of the RF integrated racks. This method finally realizes the electromagnetic compatibi-lity test of the function module under the integrated environment, and also is proved to be feasible and accurate.

Key words: integrated RF, limited-space, RF module, electromagnetic compatibility, electromagnetic interference (EMI)

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