Aiming at evaluating and predicting rapidly and accurately a high sensitivity receiver’s adaptability in complex electromagnetic environments,a novel testing and prediction method based on dual-channel multi-frequenc...Aiming at evaluating and predicting rapidly and accurately a high sensitivity receiver’s adaptability in complex electromagnetic environments,a novel testing and prediction method based on dual-channel multi-frequency is proposed to improve the traditional two-tone test.Firstly,two signal generators are used to generate signals at the radio frequency(RF)by frequency scanning,and then a rapid measurement at the intermediate frequency(IF)output port is carried out to obtain a huge amount of sample data for the subsequent analysis.Secondly,the IF output response data are modeled and analyzed to construct the linear and nonlinear response constraint equations in the frequency domain and prediction models in the power domain,which provide the theoretical criteria for interpreting and predicting electromagnetic susceptibility(EMS)of the receiver.An experiment performed on a radar receiver confirms the reliability of the method proposed in this paper.It shows that the interference of each harmonic frequency and each order to the receiver can be identified and predicted with the sensitivity model.Based on this,fast and comprehensive evaluation and prediction of the receiver’s EMS in complex environment can be efficiently realized.展开更多
针对典型数字信号控制器(Digital Signal Controller,DSC)的电磁兼容问题,提出了电磁特性与温度特性相结合的分析方法,研究了环境温度对其传导电磁敏感度的影响.结合电磁敏感度行为级模型结构,分析了电磁干扰的作用机制,导出了DSC中金属...针对典型数字信号控制器(Digital Signal Controller,DSC)的电磁兼容问题,提出了电磁特性与温度特性相结合的分析方法,研究了环境温度对其传导电磁敏感度的影响.结合电磁敏感度行为级模型结构,分析了电磁干扰的作用机制,导出了DSC中金属-氧化物-半导体(Metal-Oxide-Semiconductor,MOS)器件阈值电压和迁移率随环境温度的变化关系;利用直接功率注入与环境温度联合控制技术,从实验和仿真两个方面分析了模型各部分特征参数在不同温度下的变化,揭示了电磁敏感度在不同环境温度下变化的内在因素,并测试了不同温度下典型DSC的电磁敏感度阈值.结果表明,DSC敏感度行为单元中MOS器件阈值电压和迁移率在不同温度下的变化,会造成其电磁敏感度随环境温度产生显著漂移.展开更多
Based on simplified Volterra model, a behavior-level simulation analysis approach of electromagnetic susceptibility （EMS） for radio frequency （RF） receiver is presented in this article. Third order simplified Volt...Based on simplified Volterra model, a behavior-level simulation analysis approach of electromagnetic susceptibility （EMS） for radio frequency （RF） receiver is presented in this article. Third order simplified Volterra model is adopted to analyze receiver EMS. A general criterion for EMS is proposed according to EMS response characteristics in frequency domain, and then the simulation flow charts for calculating susceptibility thresholds are given. This approach is superior to the previous EMS analysis method on receiver, which mainly relies on experiments but lack simulation analysis. Take the dual frequency GPS receiver and zero IF receiver interfered by continue wave as examples for in-band and out-of-band susceptibility threshold calculation. Simulation results show that the proposed method is not only valid and effective, but also reduces the internal storage and simulation time, which is suitable to RF receiver EMS analysis and practical in engineering and technology field.展开更多
基金supported by the National Natural Science Foundation of China(62071473).
文摘Aiming at evaluating and predicting rapidly and accurately a high sensitivity receiver’s adaptability in complex electromagnetic environments,a novel testing and prediction method based on dual-channel multi-frequency is proposed to improve the traditional two-tone test.Firstly,two signal generators are used to generate signals at the radio frequency(RF)by frequency scanning,and then a rapid measurement at the intermediate frequency(IF)output port is carried out to obtain a huge amount of sample data for the subsequent analysis.Secondly,the IF output response data are modeled and analyzed to construct the linear and nonlinear response constraint equations in the frequency domain and prediction models in the power domain,which provide the theoretical criteria for interpreting and predicting electromagnetic susceptibility(EMS)of the receiver.An experiment performed on a radar receiver confirms the reliability of the method proposed in this paper.It shows that the interference of each harmonic frequency and each order to the receiver can be identified and predicted with the sensitivity model.Based on this,fast and comprehensive evaluation and prediction of the receiver’s EMS in complex environment can be efficiently realized.
文摘针对典型数字信号控制器(Digital Signal Controller,DSC)的电磁兼容问题,提出了电磁特性与温度特性相结合的分析方法,研究了环境温度对其传导电磁敏感度的影响.结合电磁敏感度行为级模型结构,分析了电磁干扰的作用机制,导出了DSC中金属-氧化物-半导体(Metal-Oxide-Semiconductor,MOS)器件阈值电压和迁移率随环境温度的变化关系;利用直接功率注入与环境温度联合控制技术,从实验和仿真两个方面分析了模型各部分特征参数在不同温度下的变化,揭示了电磁敏感度在不同环境温度下变化的内在因素,并测试了不同温度下典型DSC的电磁敏感度阈值.结果表明,DSC敏感度行为单元中MOS器件阈值电压和迁移率在不同温度下的变化,会造成其电磁敏感度随环境温度产生显著漂移.
基金National Natural Science Foundation of China (60831001)
文摘Based on simplified Volterra model, a behavior-level simulation analysis approach of electromagnetic susceptibility （EMS） for radio frequency （RF） receiver is presented in this article. Third order simplified Volterra model is adopted to analyze receiver EMS. A general criterion for EMS is proposed according to EMS response characteristics in frequency domain, and then the simulation flow charts for calculating susceptibility thresholds are given. This approach is superior to the previous EMS analysis method on receiver, which mainly relies on experiments but lack simulation analysis. Take the dual frequency GPS receiver and zero IF receiver interfered by continue wave as examples for in-band and out-of-band susceptibility threshold calculation. Simulation results show that the proposed method is not only valid and effective, but also reduces the internal storage and simulation time, which is suitable to RF receiver EMS analysis and practical in engineering and technology field.
