RF absorptive window

Details RF absorptive window RF absorptive window

1992-12-30

1994-10-25

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of quartz or glass

428412, 428433, 428434, 428469, 428471, 428472, 428689, 428697, 428701, 428702, 359359, 359360, B32B 700

Patent

active

053587871

ABSTRACT:
A window which is transparent to visible light and/or infrared radiation but which absorbs radio frequency energy. The window has a at least two layers of dielectric material separated by a conductor and backed with another conductor. Each layer of the window is selected to be transparent to visible light and/or infrared radiation. The window functions to absorb RF energy in a manner similar to a Jaumann absorber, with the exception that the backing conductor need not be a short circuit. The window is constructed of known window materials, such as glass and plastic, with the conductors being a gold film or indium-tin oxide.

REFERENCES:
patent: 4065600 (1977-12-01), King
patent: 4568578 (1986-02-01), Arfsten
patent: 4786783 (1988-11-01), Woodard
patent: 5073451 (1991-12-01), Iida
patent: 5147694 (1992-09-01), Clarke
Emerson, W. H. "Electromagnetic Wave Absorbers and Anechoic Chambers through the Years", IEEE Transactions on Antennas and Propagation, vol. AP-21, No. 4, Jul. 1973, pp. 484-490.
Nortier, J. R. et al. "Tables for the Designs of Jaumann Microwave Absorber", Microwave Journal, Sep. 1987, pp. 219-222.
Ruck, G. T. et al. "The Radar Cross Section Handbook", Plenum Press, New York, 1970, Library of Congress Catalog Card Number 88-26774.

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