Kenneth J Harker

US Patent:

59766662, Nov 2, 1999

Filed:

Aug 29, 1994

Appl. No.:

8/297688

Inventors:

Subhash C. Narang - Redwood City CA
Asutosh Nigam - Redwood City CA
Sei-ichi Yokoi - Redwood City CA
Robert C. Schmitt - Palo Alto CA
Kenneth J. Harker - Los Altos CA
Mark A. McHenry - Menlo Park CA

Assignee:

SRI International - Menlo Park CA

International Classification:

B32B 324
H01Q 1700

US Classification:

428138

Abstract:

Novel devices for providing shielding from and absorption of broadband electromagnetic radiation, and methods of manufacturing and using these devices, are disclosed. The device is comprised of a perforated electrical absorbing layer, containing conductive polymers, laminated to a metal plate. Additional layers may be incorporated into the device including one or more additional layers of electrical absorbing layers, magnetic absorbing layers and impedance matching layers.