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Combined layers in a microwave radiation absorber

  • US 4,012,738 A
  • Filed: 01/31/1961
  • Issued: 03/15/1977
  • Est. Priority Date: 01/31/1961
  • Status: Expired due to Term
First Claim
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1. Combined layers in a microwave radiation absorber comprising a layer of dielectric material of relatively high dielectric constant and a layer of magnetic material having a relatively high coefficient of magnetic permeability, said layers of dielectric material and magnetic material being in substantially parallel arrangement to one another and adapted to be positioned in a high electric field region and in a high magnetic field region of a radiation reflecting surface, respectively, said layer of magnetic material being adapted to be positioned in said high magnetic field region between said layer of dielectric material and said reflecting surface, said layer of dielectric material having a front surface with respect to the wave front of incident radiation, said front surface being at a distance from said reflecting surface approximately an odd multiple of a quarter wavelength of microwave radiation as measured within said combined layers.

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