GB/T 32596-2016Electromagnetic shielding—General specification of electromagnetic wave absorbing sheet (English PDF)
电磁屏蔽 吸波片通用规范
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
April 25, 2016
Implementation date
November 1, 2016
Scope
GB/T 32596-2016 is the English-translated version of 电磁屏蔽 吸波片通用规范.
GB/T 32596-2016 is the Chinese standard "Electromagnetic shielding—General specification of electromagnetic wave absorbing sheet".
Its scope clause reads: This standard specifies the terminology and definition, classification, technical requirements, test methods, inspection rules for solid-state chip absorbing materials for electromagnetic shielding, and packaging, marking, storage and transportation requirements.
This standard applies to the frequency range of 10MHz ~ 40GHz wave absorber. Its clauses include normative reference documents; terms and definitions.
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Document preview — GB/T 32596-2016
National Standard of the People's Republic of China
- ICS
- 33.030
- Classification
- L 90
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- 1 Scope
- 2 normative reference document
- 3 Terms and definitions
- 7 Inspection rules
- 8 Packaging, marking, storage and transportation
- Appendix A (Normative Appendix) Electromagnetic Shielding Absorbers Magnetic Permeability Test Method
- Appendix B (normative) Electromagnetic shielding Absorbers Power loss and transmission attenuation test method
1 Scope
This standard specifies the terminology and definition, classification, technical requirements, test methods, inspection rules for solid-state chip absorbing materials for electromagnetic shielding.
And packaging, marking, storage and transportation requirements.
This standard applies to the frequency range of 10MHz ~ 40GHz wave absorber.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 191 packaging and storage icon
GB/T 2828.1-2012 Count Sampling Inspection Procedures Part 1. Batch Inspection Sampling by Reception Quality Limit (AQL) plan
Terminology of electromagnetic shielding materials GB/T 26667-2011
3 terms and definitions
The following definitions and definitions of the following definitions and definitions apply to this document in GB/T 26667-2011.
3.1 Absorbing plate
And has an electromagnetic wave absorbing ability to absorb a sheet-like material for the purpose of the electromagnetic wave energy incident on its surface.
3.2 Reflection attenuation
Ra
Electromagnetic wave irradiation to the material surface, the reflected power and the incident power ratio, Ra can be calculated by (1).
Ra = 10lg
Pr
Pi
÷ (1)
Where.
Ra --- reflection attenuation, in decibels (dB);
Pr --- Reflected power in watts (W);
Pi --- incident power, in watts (W).
3.3 Transmission attenuation
Ta
After the electromagnetic wave is irradiated to the surface of the material, the ratio of the transmission power to the incident power, Ta can be calculated by the formula (2).
Ta = 10lg
Pt
Pi
÷ (2) […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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