Electromagnetic wave absorber

Details Electromagnetic wave absorber Electromagnetic wave absorber

1998-04-07

1999-08-17

Pihulic, Daniel T.

Communications: directive radio wave systems and devices (e.g.,

Radio wave absorber

H01Q 1700

Patent

active

059400226

ABSTRACT:
An electromagnetic wave absorber comprises a substrate made from a material which rarely absorbs a microwave and an electromagnetic wave absorbing layer formed on the surface of the barrier of the substrate, the electromagnetic wave absorbing layer is made from a mixture of an electroconductive metal oxide and an insulating material, and the impedance of the electromagnetic wave absorbing layer is adjusted to the impedance of a medium through which the microwave is transmitted such that reflection power ratio becomes 10 dB or more.

REFERENCES:
patent: 4024318 (1977-05-01), Forster et al.
patent: 4970360 (1990-11-01), Pesheck et al.
patent: 5258596 (1993-11-01), Fabish et al.
patent: 5770304 (1998-06-01), Nakamura et al.

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