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US 5,134,405 AGranted
Electromagnetically anechoic chamber and shield structures therefor
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKatsuo Ishihara, Yoshio Tomiyama
Life of this patent
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Abstract
The present invention relates to an electromagnetically anechoic chamber for EMC (Electromagnetic Compatibility) tests of electronic devices. The floor, ceiling and side wall of the anechoic chamber have panels of electromagnetic wave absorber having many ferrite tiles, and shield members comprising double layered shield members of copper sheets and iron sheets for absorbing and reflecting the foreign electromagnetic wave.
Claims4
An electromagnetically anechoic chamber for EMC testing comprising:
- double shield panels for defining said chamber, said double shield panels each comprising a first panel and a second panel adjacent to said first panel with a space therebetween, each of said first panel and said second panel having an electromagnetic shield disposed thereon, and
- electromagnetic wave absorber panel means inside of said double shield panels for absorbing electromagnetic waves, said electromagnetic wave absorber panel means comprising:
- a plurality of ferrite tiles arranged as a surface of said electromagnetic wave absorber panel means, and
- aluminum foil covering said ferrite tiles.
1 more element
Dependencies are inferred from the claim text.