電磁脈沖與開孔腔內(nèi)PCB板級(jí)MSL間的耦合研究
[Abstract]:The inductive current (Current),) generated by the coupling of microstrip line (MSL) and external electromagnetic energy on PCB will cause coupling injury to sensitive devices. At present, the focus of this research is not enough, so the PCB board with corner MSL is taken as the research object, and the Current calculation is the main entry point to calculate the multi-parameter coupling characteristics. After establishing the corresponding numerical model and verifying the validity of the modeling method, the external plane wave excitation source is established and the influence of the parameters such as the angle of MSL and the corner compensation on the current is investigated by using the finite element method. The results show that the calculated positions on the straight MSL have little effect on the Current, and the difference between them decreases with the increase of the frequency, and the difference is larger than that of the MSL bending. The suppression effect of cavity at the resonance point will be weakened or even completely invalidated when the MSL is placed parallel to the electric field E. when the trace line needs to be placed in a short line and the electric field E is placed vertically, the width of the trace line can be increased and the current value will increase, but the trend will slow down. Corner compensation is effective in improving signal integrity (SI), but limited in reducing electromagnetic coupling. It is the common result of the multi-parameter study that the resonance point will not be affected.
【作者單位】: 浙江工業(yè)職業(yè)技術(shù)學(xué)院電氣電子工程分院;中國(guó)科學(xué)院長(zhǎng)春光學(xué)精密機(jī)械與物理研究所應(yīng)用光學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】:中國(guó)科學(xué)院預(yù)研基金(61501.02.03.04)
【分類號(hào)】:TN41
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