JPS6249713B2 - - Google Patents

Info

Publication number

JPS6249713B2

JPS6249713B2 JP6154380A JP6154380A JPS6249713B2 JP S6249713 B2 JPS6249713 B2 JP S6249713B2 JP 6154380 A JP6154380 A JP 6154380A JP 6154380 A JP6154380 A JP 6154380A JP S6249713 B2 JPS6249713 B2 JP S6249713B2

Authority

JP

Japan

Prior art keywords

radio wave

door

chi

attenuating material

metal plate

Prior art date

1980-05-08

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Expired

Links

• Espacenet
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• 239000000463 material Substances 0.000 claims description 12
• 239000002184 metal Substances 0.000 claims description 8
• 229910052751 metal Inorganic materials 0.000 claims description 8
• 239000011347 resin Substances 0.000 claims description 5
• 229920005989 resin Polymers 0.000 claims description 5
• 238000010438 heat treatment Methods 0.000 claims description 4
• 239000003302 ferromagnetic material Substances 0.000 claims description 3
• XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
• 238000005452 bending Methods 0.000 claims 2
• 229910052742 iron Inorganic materials 0.000 claims 1
• 238000000465 moulding Methods 0.000 claims 1
• 230000000694 effects Effects 0.000 description 4
• 229910000859 α-Fe Inorganic materials 0.000 description 4
• 239000006096 absorbing agent Substances 0.000 description 2
• 240000002871 Tectona grandis Species 0.000 description 1
• 239000011358 absorbing material Substances 0.000 description 1
• 230000002238 attenuated effect Effects 0.000 description 1
• 238000013016 damping Methods 0.000 description 1
• 230000002265 prevention Effects 0.000 description 1
• 238000004080 punching Methods 0.000 description 1