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The equivalent circuits modeling method is developed for the EMP(Electromagnetic pulse) generators of the equipment-level immunity test. On the double-exponential function of EMP waveform, the corresponding circuit structure is introduced, and the calculation method is given to obtain the circuit RLC parameters. For the generators of EFT(Electrical Fast Transient/Burst), surge combination wave, and...
A system and source joint estimation method for EM emission modeling is proposed in this paper. Based on the priori knowledge, i.e., the transfer function of system is smooth and the form of source signal was already known, the paper using joint estimation method to solve modeling problems when measured only the emission amplitude spectra at some ports. Experimental results verify the method could...
Simultaneous switching noise (SSN, also called delta-I noise) has became a tremendous challenge to the reliable operation of high speed circuit. A new method for modeling SSN of gapped power-ground planes is proposed in this paper. The gapped power-ground planes characteristics are derived from a hybrid field-circuit method. With this method, the parallel power-ground planes resonance characteristics...
With the development of the power system, protection for the electromagnetic interference is very important. Although protective measures of electronic equipment are improved. But the chassis itself shielded by the existence of defects (such as ventilation holes), leading to the shielding performance decline. In this paper the transmission line matrix method is applied to study electromagnetic signals...
The electromagnetic environment of the high voltage direct current (HVDC) is much more complex than ever. The electromagnetic compatibility (EMC) of the printed circuit board (PCB) in the secondary equipments is the top priority. In this paper, finite integration theory (FIT) methods are applied to analyse the resisting electro magnetic interference (EMI) of the PCB in high frequency. The model bases...
In daily living, person often performs quite differently for finishing the same semantic task, because of her/his mood and the scene state of that time. A large amount of variations are caused by personal petty actions, aimless wandering and additive actions in special scenes, which we term irrelevant events. In this paper, we explore how activities containing sparse irrelevant events can be recognized...
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