This web page deals mainly with the manufacturers of large, walk-in shielded rooms. For smaller enclosures, such as those that would fit on a desk top on in a printed circuit board, see:
Shielding Materials:(see also Magnetic Shielding Materials)

*** Please tell these suppliers that you reached them through emcdirectory.com ***

Project Developers, Inc.,
Braden,
Comtest,
EMC Test Systems,
European EMC Products. Ltd.
Field Management Services
Frankonia (Germany),
Lehman,
Lindgren,
Panashield,
Proysa (Spain),
R.A. Mayes,
RFI Industries,
Rantec,
Raymond,
Ray Proof,
SCIF Solutions,
Universal,

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* Electromagnetically Shielded Enclosures or "EMI Shielded Enclosures" are used to block unwanted radio signals from getting in or out. This general term is used to refer to enclosures that can be several stories tall, or small enough to fit on a printed circuit board.

* Shielded Enclosures that are approximately the size of a typical room or office are often called " shielded rooms, " or (in Canada) "Walk-in shielded enclosures" or "Faraday Cages " after the British scientist Michael Faraday who invented the first one, The first shielded rooms were made of copper screen fabric, so they were called "Screen Rooms." The term is still used today.

* Shielding Effectiveness Testing is the technology used to determine if a sheilded enclosure is working properly. It is also used to determine the effectiveness of different types of shielding materials.

For more information about shielding, see: "THE SHIELDED ENCLOSURE HANDBOOK" and these COURSES. entitled:

SHIELDED ENCLOSURES

SHIELDING EFFECTIVENESS TESTING

CONSTRUCTION OF ELECTROMAGNETICALLY SHIELDED ENCLOSURES

Copyright 2006, 2007, 2008 by THE HERNDON COMPANY. All rights reserved.