IEEE 1128

Revision:1998 Edition, 1998

Published Date:June 8, 2012

Status:Active, Most Current

Document Language:English

Published By:Institute of Electrical and Electronics Engineers (IEEE)

Page Count:64

ANSI Approved:No

DoD Adopted:No

The purpose of this recommended practice is to recommendrealistic and repeatable criteria, as well as recommended testmethods, to characterize the absorption properties of typicalanechoic chamber linings applied to a metallic surface. Thisrecommended practice covers the parameters and test procedures forthe evaluation of radio-frequency (RF) absorbers to be used forradiated emissions and radiated susceptibility testing ofelectronic products, in the absorber manufacturer and/or absorberuser environment, over the frequency range of 30 MHz to 5 GHz.

The recommended methods approach the RF absorber evaluation atthree levels:

a) RF absorber materials bulk parameters

b) Arrays of commercially available RF absorbers

c) RF absorbers in actual applications, as in anechoic orsemianechoic chambers and lined open-area test sites.

The evaluation measurements can be performed in frequency and/ortime domain. This recommended pratice, however, does not addressthe accuracy and limitations of the different evaluation methods.These issues will be addressed in future revisions of thisrecommended pratice.