实时波前处理机中的同步开关噪声抑制

doi:10.3969/j.issn.1001-2400.2014.03.030

J4 ›› 2014, Vol. 41 ›› Issue (3): 196-202.doi: 10.3969/j.issn.1001-2400.2014.03.030

• Original Articles • Previous Articles Next Articles

Study on suppression of simultaneous switching noise in the real-time wavefront processor

YANG Haifeng^1,2,3;RAO Changhui^1,2;LI Mei^1,2;ZHOU Rui^1,2

(1. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209， China;
2. The Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209， China;
3. Univ. of Chinese Academy of Sciences, Beijing 100049， China)

Received:2013-02-25 Online:2014-06-20 Published:2014-07-10
Contact: YANG Haifeng E-mail:haifeng_ioe@163.com

Abstract

Abstract:

In order to reduce the simultaneous switching noise(SSN) in the Adaptive Optics(AO) Real-Time Wavefront Processor(RT-WFP),in accordance with the feature of RT-WFP, 3-D full wave and circuit simulation methods are applied to analyze the board-level SSN. By researching decoupling capacitors, the split power plane, the electromagnetic band gap(EBG) structure for noise suppression, the results show that through a well device layout, reasonable power plane split and place decoupling capacitors around the key components can reduce the plane noise, and that mushroom-like EBG structures have a high bandwidth and low cut-off frequency characteristics with a good SSN inhibition effect. Finally, applying system and board-level noise inhibition measures to RT-WFP, a suppression of SSN from 0GHz to 4GHz is achieved with a high mitigation level of -52dB, the power integrity requirements of RT-WFP are met.

Key words: adaptive optics, wavefront processor, power integrity, simultaneous switching noise, electromagnetic band gap

YANG Haifeng;RAO Changhui;LI Mei;ZHOU Rui. Study on suppression of simultaneous switching noise in the real-time wavefront processor[J].J4, 2014, 41(3): 196-202.

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[1]	ZHANG Guangshuo;LU Hongmin;TAN Kangbo;GUANG Qiao;XIAO Junfei. Novel power plane with an electromagnetic bandgap structure for suppression of simultaneous switching noise [J]. Journal of Xidian University, 2016, 43(5): 52-56+189.
[2]	LU Hongmin；YU Zhiyong；ZHAO Yimin；NA Yan. Power plan of the printed circuit board with novel electromagnetic band-gap structures [J]. J4, 2011, 38(3): 20-23.

Study on suppression of simultaneous switching noise in the real-time wavefront processor

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