Stock material or miscellaneous articles – Structurally defined web or sheet – Including grain – strips – or filamentary elements in...
Patent
1986-05-05
1988-03-01
Cannon, James C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including grain, strips, or filamentary elements in...
156 63, 244121, 244133, 333 21A, 333 21R, 342 1, 342 2, 342 3, 342 5, 343756, 343897, 343909, 428114, 428229, 428294, 428298, 428329, 428697, B65D 4500, H01Q 1524, H01Q 1700, H03C 700, H05K 900
Patent
active
047285540
ABSTRACT:
The present invention relates to fiber structures and methods for obtaining tuned response to high frequency electromagnetic radiation, particularly at microwave frequencies. In one embodiment, a woven fabric is prepared with ferrite filled fibers oriented perpendicular to dielectric filled fibers. The fill of the fibers is selected to reflect radiation having a known frequency and polarization. In other embodiments, tuned structures are provided by disposing sheets containing oriented ferrite and dielectric fibers parallel to one another and moving the layers relative to one another to achieve the desired impedance for incident radiation.
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British Intelligence Objectives Sub-Committee Final Report No. 869, Item No. 1, "Ferromagnetic Material for Radar Absorption", declassified Apr. 26, 1960.
Goldberg Harris A.
Marikar Y. M. Faruq
Cannon James C.
Hoechst Celanese Corporation
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