A heuristic for engineering data comparison
Is there a better way to teach electromagnetics?
Electromagnetics is a difficult subject for both students and lecturers. It introduces many new concepts and uses language that is challenging. As a result, it is neither popular for students nor increasing in its inclusion in the curriculum. This talk is based on the experience of the speaker. It suggests that the commonly adopted current way of teaching electromagnetics needs modernisation to react to changes in the profession and student body. It goes further to suggest that a fundamental rethink is required in the way that electronics, itself, is required.
The importance of small loops in EMC and Signal and Power Integrity
We (should) know that in constructing electronic circuits, we should “keep loops as small as possible”. But why? We have strong reasons from an EMC viewpoint of controlling radiation and emissions. We have strong reasons to do this for reducing such problems as ground bounce in signal and power integrity applications. This talk looks at the nature of a current loop starting with a simple field view, introduces flux and inductance / capacitance leading to simple resonance concepts. It then uses partial inductance as a starting point to explore ground bounce. All of these viewpoints suggest “keep loops as small as possible”.
Alistair Duffy教授是IEEE Fellow，IEEE EMC Society副主席。他在电磁兼容/信号完整性、混响室测试、电缆、天线与电磁波传播等方向发表了200多篇技术文章。Professor Duffy 在计算电磁学验证领域走在世界前列，他所创立的FSV仿真数据有效性定量评估方法已经成为IEEE 1597.1标准的核心内容。他目前在多个国际学术组织任职，是IEEE电磁兼容学会副主席，应用计算电磁学会（ACES）、国际电线电缆研讨会（IWCS）的理事。同时担任IEEE Transactions on EMC编辑、Transactions of the IWCS和ACES Newsletter总编。