Electromagnetic compatibility

Electromagnetic - EE429 PROJECT REPORT TEAM 4 ABSTRACT This paper describes a possible solution to decrease the radiated emissions emitted by a

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EE429 PROJECT REPORT TEAM 4
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ABSTRACT This paper describes a possible solution to decrease the radiated emissions emitted by a switching regulator device and its associated circuitry for commercial use. For this, the radiated emissions from 100 kHz to 100 MHz are determined by measuring the common- mode currents on the two input wires and two output wires. This procedure is done by using a current probe which is calibrated using specific techniques. For minimizing the differential mode current radiation, the two input and output wires are twisted together to form a twisted wire pair. By clamping the current probe around the twisted wire pair, the net common-mode current is measured and analyzed accordingly. Keywords – switching regulator, common-mode, differential-mode, twisted wire pair.
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TABLE OF CONTENTS SUMMARY DESIGN DESCRIPTION MEASUREMENT METHODS CONCLUSION REFERENCES APPENDIX
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SUMMARY Effective EMC design has become a critical component in the design of most modern electrical devices. The electromagnetic interference (EMI) environment is increasingly becoming cluttered as more high-speed wireless devices are introduced into the marketplace. In many cases, unforeseen EMC problems are indentified in the product testing phase. This requires modification of the product design which inherently decreases the product reliability. The implementation of basic design principles in the initial product design phase is a much more cost effective approach to meeting EMC standards. Here, we try to limit the radiated emissions of a specific circuit using various EMI mitigation techniques so that it can be used as a commercial product meeting the EMC standards respectively.
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DESCRIPTION OF DESIGN STUDENT DESIGN COMPETION GUIDE EDUCATION & STUDENT ACTIVITIES COMMITTEE (ESAC) 2007 Student EMC Design Competition Guide 2007 STUDENT EMC DESIGN COMPETITION General Description: The 2007 Student Electromagnetic Compatibility (EMC) Design Competition is the 7th annual student competition sponsored by the IEEE Electromagnetic Compatibility Society (EMCS), and is conducted by the Education and Student Activities Committee (ESAC) and its Student Design Contest Subcommittee. The goal of this competition is to provide Electrical and Computer Engineering students who are interested in the field of EMC an opportunity to apply their knowledge and gain hands-on experience. Objective: The objective is to develop the best solution to a standardized broadband electromagnetic interference (EMI) problem while maintaining the capability to perform the required electronic functions. A standard kit containing the components that comprise the broadband EMI circuit will be employed. Problem Description:
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This note was uploaded on 01/11/2011 for the course EE 529 taught by Professor Dr.j.j.whalen during the Spring '10 term at SUNY Buffalo.

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Electromagnetic - EE429 PROJECT REPORT TEAM 4 ABSTRACT This paper describes a possible solution to decrease the radiated emissions emitted by a

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