IEEE 299.1-2013

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IEEE Standard Method for Measuring the Shielding Effectiveness of Enclosures and Boxes Having all Dimensions between 0.1 m and 2 m

Published By	Publication Date	Number of Pages
IEEE	2013	96

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Description

New IEEE Standard – Active. This standard 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(TM)-2006. This standard is divided into 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 addresses 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 number 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.

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PDF Pages	PDF Title
1	IEEE Std 299.1™-2013 front cover
3	Title page
5	Important Notices and Disclaimers Concerning IEEE Standards Documents
10	Introduction
11	Contents
13	IMPORTANT NOTICE 1. Overview
14	1.1 Scope
16	1.2 Purpose
17	1.3 Application of test methods and use of this document
18	2. Normative references 3. Definitions 3.1 General terminology 3.2 Technical terminology
20	4. Preparing for shielding effectiveness measurements – preliminary procedures 4.1 Background 4.2 Test plan 4.3 Calibration 4.4 Reference level
21	4.5 Dynamic range (DR) 4.6 Personnel in shielded enclosure (tester and witness) 4.7 Preliminary shield check procedures 4.8 Reverberation qualification (7.2 and Annex J only) 4.9 Pass/fail requirements
22	4.10 Usable frequency ranges and limits (7.2 only)
23	5. Measurement instrumentation
25	6. Measurement uncertainty 7. Test procedures 7.1 Part I – 0.75 m to 2 m enclosures
42	7.2 Part II – Physically small (< 0.75 m) and electrically large enclosures
50	8. Quality assurance technical report 8.1 Abbreviated test report 8.2 Full test report
52	Annex A (informative) Rationale (for Part I – 0.75 m to 2 m enclosures) A.1 Basis A.2 Considerations pertinent to the objectives of 1.2 of this standard
53	A.3 Cavity resonances
56	A.4 Measurement locations
57	A.5 Measurement equipment
58	Annex B (informative) Mathematical formulas (for Part I – 0.75 m to 2 m enclosures) B.1 Specific mathematical formulations B.2 Low range (50 Hz to 20 MHz) shielding effectiveness
59	B.3 High range (300 MHz to 100 GHz) shielding effectiveness B.4 Nonlinear (logarithmic) calculations B.5 Dynamic range considerations
61	Annex C (informative) Miscellaneous supporting information (for Part I – 0.75 m to 2 m enclosures) C.1 Coplanar versus coaxial loops C.2 Nonlinearity of high-permeability ferromagnetic enclosures C.3 Selecting measurement frequencies
64	Annex D (informative) Guidelines for the selection of measurement techniques (for Part I – 0.75 m to 2 m enclosures) D.1 Types of enclosures D.2 Performance requirements
65	D.3 Equipment requirements D.4 Regulatory agency conflicts
66	Annex E (informative) Preliminary measurements and repairs (for Part I – 0.75 m to 2 m enclosures) E.1 Background E.2 Frequencies for preliminary check E.3 Preliminary check procedures
68	Annex F (informative) Rationale for wall-mounted monopoles
73	Annex G (informative) Impedance mismatch correction
76	Annex H (informative) Using isolated monopoles in outer reverberation chamber
78	Annex I (informative) Measuring the shielding effectiveness of physically small and electrically small enclosures using magnetic field measurements (≤ 300 MHz) I.1 Purpose
79	I.2 Rationale I.3 Test setup and circuits
85	Annex J (informative) Electrically small enclosures in reverberation chambers J.1 Background
86	J.2 Measurement procedure
87	J.3 Formula to be applied J.4 Internal probe type and positioning
88	Annex K (informative) Utilization of absorbing (dissipative) materials in equipment enclosures for the measurement of shielding properties
95	Annex L (informative) Bibliography

Additional information

Standard Title	IEEE Standard Method for Measuring the Shielding Effectiveness of Enclosures and Boxes Having all Dimensions between 0.1 m and 2 m
Published Code	IEEE
Publication Date	2013
Pages Count	96

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