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Copper Foil Table

Frequency Range Attenuation in Decibels (dB) Attenuation in Decibels (dB) Attenuation in Decibels (dB)
  CU Foil .005" CU Foil .010" CU Foil .016"
200 KHz Electrical Field 100 dB 100 dB 100 dB
10 KHz Electrical Field 100 dB ≥ 100 dB ≥ 100 dB
200 KHz Magnetic Field ≥ 50 dB ≥ 50 dB ≥ 50 dB
400 MHz Plane Wave 100 dB ≥ 100 dB ≥ 100 dB
10 GHz Plane Wave 100 dB ≥ 100 dB ≥ 100 dB