PCB设计中20H规则的验证方法
The Research on Certification Methods of 20H Rule in PCB Design
摘要 随着电路工作频率的上升,PCB设计面临越来越多的电磁辐射问题。20H规则是减小电路板辐射的设计规则之一。20H是一条未得到证明的经验规则,通过分析反射系数法、FDTD法和实际测量法,对20H规则进行验证,并研究影响20H规则的因素。
关键词 20H;电磁兼容;FDTD法
Abstract With the increasing demand of higher operating frequencies for electronic
circuits, the printed circuit board designers face more and more electromagnetic
radiation problems than ever. 20H is a unproved and experiential regulation. The 20H
rule is one of printed circuit board design rules, which intends to minimize the
electromagnetic radiation. The goal of the paper is studying the techniques which are
used for analyzing the effect of 20H rule, and mainly analyzing the method of
reflectance coefficient and FDTD. Studying the two techniques’ effect on checking 20H
rule'implement in the design of PCB and bringing actual method for measuring, and
prove the 20H rule.
Key words 20H; EMC; FDTD method
本期目录
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- PCB设计中20H规则的验证方...
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- 带PTC电热元件器具的功率测定...
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电动工具弯折试验
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