1、 IEEE Standard Method for Measuring the Shielding Effectiveness of Enclosures and Boxes Having all Dimensions between 0.1 m and 2 m Sponsored by the Standards Development Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA IEEE Electromagnetic Compatibility Society IEEE Std 299.1-2013 IEEE Std
2、299.1-2013 IEEE Standard Method for Measuring the Shielding Effectiveness of Enclosures and Boxes Having all Dimensions between 0.1 m and 2 m Sponsor Standards Development Committee of the IEEE Electromagnetic Compatibility Society Approved 31 October 2013 IEEE-SA Standards Board Abstract: This stan
3、dard provides uniform measurement procedures for determining the shielding effectiveness of electromagnetic (EM) shielding for a variety of enclosures and boxes having all dimensions between 0.1 m and 2 m in the radio frequency range not addressed by IEEE Std 299-2006. This standard is divided into
4、two parts: Part I 0.75 m to 2 m and Part II physically small ( 0.75 m) but electrically large enclosures. In addition to a number of annexes aiding the measurement of shielding effectiveness of these enclosures, Annex I addresses physically small and electrically small enclosures, and Annex J addres
5、ses electrically small enclosures in reverberation chambers. Problems occurring in the testing of small enclosures having linear dimension less than 2 m are very different from determining the shielding effectiveness of large rooms and broad depending on the actual size of the enclosure itself. A nu
6、mber of other annexes are included that address rationale, mathematical formulas, selection of measurement techniques, preliminary measurement and repairs, wall-mounted monopoles, impedance mismatch correction, and using isolated monopoles in outer reverberation chambers. Keywords: electrically larg
7、e, electrically small, electromagnetic shielding, IEEE 299.1, physically large, physically small, reverberation chamber, shielded enclosure, shielding effectiveness The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 2014 by The Institute
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37、viParticipants At the time this IEEE standard was completed, the Electromagnetic Shielding Enclosures Working Group had the following membership: Maria Sabrina Sarto, Chair Andy Marvin, Vice-Chair Peter Richeson, Chair of Subcommittee A Christopher L. Holloway, Chair of Subcommittee B Kermit O. Phip
38、ps, Secretary Philip F. Keebler, Sandra Greco, Editors Nanette Jones, Graphics Designer John Archer Ilario Bertino Edwin Bronaugh Mark Bushnell Joe Butler Nigel Carter Johan Catrysse William J. Croisant Fred Eriksen Harry Gaul Robert Harriman Michel Hatfield Luther (Bud) Hoeft Mark Katrancha Galen K
39、oepke John Ladbury Alessandro Lampasi David Larrabee Jim Lenn Valter Mariani Michael McInerney Franco Moglie Walter Scott Radu Sergiu Doug Smith Per Soldal Dale Svetanoff Donald Sweeney James WhalenThe following members of the individual balloting committee voted on this standard. Balloters may have
40、 voted for approval, disapproval, or abstention. Jacob Ben Ary William Bush Mark Bushnell Suresh Channarasappa Keith Chow William J. Croisant Alistair Duffy Jon Ford Randall Groves Edward Hare Werner Hoelzl Daniel Hoolihan Noriyuki Ikeuchi Sergiu Iordanescu Efthymios Karabetsos Chad Kiger Jim Kulchi
41、sky Arthur H. Light Greg Luri Edward McCall Michael McInerney Michael Newman Donald Parker Ghery Pettit Iulian Profir Michael Roberts Maria Sabrina Sarto Bartien Sayogo Raymond Senechal Walter Struppler Donald Sweeney John Vergis Barry Wallen Jian YuCopyright 2014 IEEE. All rights reserved. viiWhen
42、the IEEE-SA Standards Board approved this standard on 31 October 2013, it had the following membership: John Kulick, Chair David J. Law, Vice-Chair Richard H. Hulett, Past Chair Konstantinos Karachalios, Secretary Masayuki Ariyoshi Peter Balma Farooq Bari Ted Burse Stephen Dukes Jean-Phillippe Faure
43、 Alexander Gelman Mark Halpin Gary Hoffman Paul Houz Jim Hughes Michael Janezic Joseph L. Koepfinger* Oleg Logvinov Ron Peterson Gary Robinson Jon Walter Rosdahl Adrian Stephens Peter Sutherland Yatin Trivedi Phil Winston Yu Yuan *Member Emeritus Also included are the following nonvoting IEEE-SA Sta
44、ndards Board liaisons: Richard DeBlasio, DOE Representative Michael Janezic, NIST Representative Michelle Turner IEEE Standards Program Manager, Document Development Joan Woolery IEEE Standards Program Manager, Technical Program Development Copyright 2014 IEEE. All rights reserved. viiiIntroduction
45、This introduction is not part of IEEE Std 299.1-2013, IEEE Standard Method for Measuring the Shielding Effectiveness of Enclosures and Boxes Having all Dimensions between 0.1 m and 2 m. Enclosures and boxes constructed from various metals and other materials such as plastics coated with various meta
46、llic coatings are used to provide shielding against radiated emissions in various frequency ranges. Enclosures and boxes shall contain apertures to allow objects to pass through the shield to reach equipment inside the shield. A particular threat is represented by intended apertures whose radiation
47、cannot be mitigated by electromagnetic gasketing. In particular, heat dissipation requirements fix a lower bound on aperture size. This is the reason why equipment-level enclosures typically offer a shielding effectiveness (SE) ranging from low to medium values. The measurement of the SE of an enclo
48、sure is standardized in IEEE Std 299-2006, IEEE Standard Method for Measuring the Effectiveness of Electromagnetic Shielding Enclosures. While in the case of a large enclosure, the method does not show any particular problems, in the case of a small enclosure, some problems arise, especially in the
49、definition of SE. IEEE Std 299-2006 does not address tile measurement of the shielding effectiveness of enclosures having minimum linear dimension smaller than 2 m. IEEE Std 299-2006 provides uniform measurement procedures for determining the effectiveness of electromagnetic (EM) shielding enclosures at frequencies from 9 kHz to 18 GHz (extendable down to 50 Hz and up to 100 GHz). More precisely, a distinction is necessary between physically small but electrically large enclosures, and those that are both physically and electrically small. The former successfully allow
