基于电磁带隙结构的高速混合信号电路板噪声抑制

发布时间：2018-11-19 10:21

【摘要】：针对空间遥感相机发展特点以及高速混合信号集成电路的发展趋势,如何抑制电路板上的噪声成为目前研究的一个重要方向。文章在分析传统的去耦电容降噪方法和最新的电磁带隙结构降噪原理的基础上,提出了一种新型的电磁带隙结构来抑制电路板上的噪声;通过对该电磁带隙结构的仿真,得出此结构能够在一定程度上降低电路板上的噪声;在此基础上,文章更进一步设计了基于该电磁带隙结构的应用电路板进行实验验证;通过对电路板上测量的噪声数据对比分析,验证了该结构降噪的有效性,其中噪声的均方根值平均降低幅度为27.96%;最后针对一款实际应用的CCD相机成像电路板,通过对比测量成像后图像信噪比数据,得出使用该新型电磁带隙结构时,CCD成像的信噪比有了一定程度的提高,为电磁带隙结构在空间遥感相机电路等其他工程上的应用提供了实验参考。
[Abstract]:According to the characteristics of space remote sensing camera and the development trend of high-speed mixed-signal integrated circuit, how to suppress the noise on the circuit board has become an important research direction. Based on the analysis of the traditional decoupling capacitive noise reduction method and the newest principle of electromagnetic band gap structure, a new electromagnetic band gap structure is proposed to suppress the noise on the circuit board. Through the simulation of the electromagnetic band gap structure, it is concluded that the structure can reduce the noise on the circuit board to a certain extent, and on this basis, the paper further designs the application circuit board based on the electromagnetic band gap structure for experimental verification. The effectiveness of the noise reduction is verified by comparing and analyzing the noise data measured on the circuit board, in which the mean square root value of the noise decreases by 27.96. Finally, aiming at a practical CCD camera imaging circuit board, by comparing and measuring the image signal to noise ratio data after imaging, it is concluded that the signal-to-noise ratio of CCD imaging has been improved to a certain extent when the new electromagnetic band gap structure is used. It provides an experimental reference for the application of electromagnetic bandgap structure in space remote sensing camera circuit and other projects.
【作者单位】：北京空间机电研究所;
【分类号】：V445.8

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