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“Radiative Testing Using Reverberation Chambers”
Program Summary: Several test facility options for conducting electromagnetic compatibility testing including immunity, emissions, and shielding effectiveness are available. Generally each facility provides a different test electromagnetic environment. A reverberation chamber is a cavity enclosed by conducting surfaces with a method of exciting modal structure changes within the cavity. The test electromagnetic environment, a superposition of plane waves with random phase, results from repeated reflections from the conducting surfaces. The statistical isotropy, random polarization, and uniform electromagnetic environment of a reverberation chamber permit a robust, all aspect angle test without the requirement for rotation or translation of the equipment-under-test. The reverberation chamber electromagnetic environment provides the correct emulation of the equipment-under-test performance when it operates in a cavity. Many standards permit the use of reverberation chambers as an alternate method for certification. As with every electromagnetic compatibility test technique, reverberation chambers are not a panacea and have disadvantages as well as advantages. This talk will provide a discussion of the reverberant electromagnetic environment, defining isotropy and uniformity and key statistical distributions of interest. The potential benefits of EMC testing in a reverberation chamber will be discussion. Finally, alternative applications of reverberation chambers will also be presented.
Our
Speaker: Dr. Chuck Bunting (S-1989, M-1994, SM-2011) was born in Virginia Beach, Virginia. He was employed at the Naval Aviation Depot in Norfolk, VA as an apprentice, an electronics mechanic, and an electronics measurement equipment mechanic from 1981-1989. He received his A.A.S. in Electronics Technology from Tidewater Community College in 1985, the B.S. degree in Engineering Technology with highest honors from Old Dominion University in 1989. He received the M.S. degree in Electrical Engineering from Virginia Polytechnic Institute and State University (Virginia Tech) in 1992. From 1991-1994 he held a Bradley Fellowship and a DuPont Fellowship and in 1994 he was awarded the Ph.D. in Electrical Engineering from Virginia Tech. From 1994 to 2001 Dr. Bunting was an assistant/associate professor at Old Dominion University in the Department of Engineering Technology where he worked closely with NASA Langley Research Center on electromagnetic field penetration in aircraft structures and reverberation chamber simulation using finite element techniques.
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