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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,使常规电磁干扰检测要求和检测手段无法直接适用于模块的问题,本文基于电磁干扰要素理论,着重研究了综合机架内部微小空间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,研究了机架工作状态及功能线程的激励控制方法,研究了基于综合机架的远场电磁发射特性数据、功能模块近场发射特性数据和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的方法。为验证电磁干扰要素检测与辨识方法的可行性,本文以某机载射频综合机架为例,开展了大量试验研究与分析,包括:射频综合机架远场辐射发射特性测试、综合机架的近场电磁发射测试、机架互连线缆束传导发射测试,并将多种工作模式下模块测试结果和综合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。
The electromagnetic compatibility interface brought by the integrated integration of radio frequency sensors is changed from the chassis, connectors and cables into the backplane-module so that the conventional electromagnetic interference detection requirements and detection methods can not be directly applied to the module. Based on the electromagnetic interference Theory, focuses on the detection method and principle of electromagnetic interference element in the tiny space inside the integrated rack, explores the testing method of the characteristic information of the electromagnetic emission of the module in the tiny space of the radio frequency frame, studies the working state of the rack and the incentive control method of the functional thread , The methods of extracting and identifying the electromagnetic interference elements such as the far-field electromagnetic emission characteristic data, the near field emission characteristic data of the functional module and the current conduction emission characteristic data on the rack interface cable bundle are studied. In order to verify the feasibility of electromagnetic interference detection and identification methods, this paper takes an airborne RF integrated rack as an example to conduct a large number of experimental studies and analyzes, including: far-field radiation emission characteristic test of integrated RF rack, Near Field Electromagnetic Emission Test and Rack Interconnection Cable Bundle Launch Test. The test results of the module under various operating modes are compared with those of the integrated rack electromagnetic test. The results show that the proposed method is feasible and accurate.