Date: Tuesday, March 11, 2014
5:30pm: Networking/light dinner
Water and soft drinks are free. Light dinner is available for a small fee.
Location: Agilent Technologies
Really, Truly Understanding Shielding
RF systems use shields and ground planes for EMI containment, constant impedance lines, signal separation, and for signal integrity management. However, there is more subtlety to them than is commonly supposed. In one experiment, the shielding effectiveness of a commercial coaxial cable was increased by 20 dB by removing braid wires. The talk will discuss this result, review the disparate shielding methods implicit in Maxwell’s equations, and cover why we find magnetic transformers but not “capaformers” in parts catalogs, and more. Finally, a review of selected commercial products will illustrate how shielding principles affect design choices.
Orin Laney lives in Mountain View and is an independent consultant in the areas of picosecond electronics, RF Instrumentation, mixed-signal electronics, magnetics design, and design for SI and EMC compliance. He also has extensive experience running and advising small businesses and startups. Mr. Laney holds an MSEE and an MBA, and is a registered PE and iNARTE certified EMC engineer.