Open Access. Powered by Scholars. Published by Universities.®
Electrical and Computer Engineering Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Electrical and Computer Engineering
Automated Near-Field Scanning To Identify Resonances, Giorgi Muchaidze, Huang Wei, Jin Min, Shao Peng, James L. Drewniak, David Pommerenke
Automated Near-Field Scanning To Identify Resonances, Giorgi Muchaidze, Huang Wei, Jin Min, Shao Peng, James L. Drewniak, David Pommerenke
Electrical and Computer Engineering Faculty Research & Creative Works
Near-field scanning systems are a tool for rootcause ESD, EMI, and immunity analysis of electronic systems, as well as qualification methodology for ICs and modules. For emissions, they have developed into a standardized method. Development of universally accepted file formats for data exchange is on-going. Four main types of scanning have been implemented by this and other authors: Near-field EMI scanning, ESD scanning, radiated immunity scanning, and resonance scanning. This article concentrates on resonance scanning as a newly added method for automated EMC system analysis.
Orthogonal Loops Probe Design And Characterization For Near-Field Measurement, Tun Li, Yong Cheh Ho, David Pommerenke
Orthogonal Loops Probe Design And Characterization For Near-Field Measurement, Tun Li, Yong Cheh Ho, David Pommerenke
Electrical and Computer Engineering Faculty Research & Creative Works
Near-field probes are often used to measure the electric and magnetic fields above a printed circuit board in order to identify the sources and coupling paths of an electromagnetic interference (EMI) problem. It is the objective of this paper to propose a rapid E-, Hx- Hy- and circular H-fields measurement using an orthogonal loops probe design. The effects of this probe are analyzed using full-wave simulations and measurements.
Estimating Maximum Radiated Emissions From Printed Circuit Boards With An Attached Cable, Shaowei Deng, Todd H. Hubing, Daryl G. Beetner
Estimating Maximum Radiated Emissions From Printed Circuit Boards With An Attached Cable, Shaowei Deng, Todd H. Hubing, Daryl G. Beetner
Electrical and Computer Engineering Faculty Research & Creative Works
The common-mode current induced on cables attached to printed circuit boards can be a significant source of radiated emissions. Previous studies have shown that coupling from electric and magnetic field sources on circuit boards can be effectively modeled by placing equivalent voltage sources between the board and the cable. The amplitude of these equivalent sources can be estimated by using closed-form equations; however, estimates of the radiated emissions from these board-cable geometries have required full-wave simulations, and full-wave simulation results depend on the exact cable length and placement, which are not normally fixed during radiated emissions testing. This paper develops …