ELECTROMAGNETIC RADIATION ABSORBER AND METHOD FOR THE PRODUCTION THEREOF
Assignee
DEPOSITION TECHNOLOGY, INC.
Filed
Feb 12, 1985
Granted
Oct 1, 1996
Location
San Diego CA (SAIC/General Dynamics)
Abstract
Disclosed herein is an electromagnetic radiation absorber comprising a filamentary, three-dimensional, porous substrate of dielectric material having a relatively thin layer of electrically conductive material deposited thereupon. The layer is characterized by a generally gradual and continuous reduction in its thickness or bulk with inward progression into the substrate from one side thereof, thus resulting in a layer exhibiting a graduated resistivity. A filler substantially pervious to the radiation of interest may be disposed in the interstitial voids between filaments, and relatively small diameter magnetic/magnetizeable particles may be suspended in the filler to thereby further extend the useful frequency range of the absorber. Also disclosed is a sputtering method for producing such an absorber.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Jul 30, 1985
Rescinded
Jul 13, 1995
Duration
9 years, 11 months
Inventor
- 1STAN CZAJA
Sensitive facility: San Diego CA (SAIC/General Dynamics)
Record Details
- Patent number
- US 5561428
- Application
- 06700648
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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