Communications: radio wave antennas – Antennas – Antenna components
Patent
1991-06-11
1994-02-15
Lee, Benny T.
Communications: radio wave antennas
Antennas
Antenna components
343754, H01Q 1523
Patent
active
052871185
ABSTRACT:
The power or frequency characteristics of a layered frequency selective surface assembly (1) having a dielectric substrate layer (2) and, superimposed therewith at a spacing (X) therefrom, at least one layer (3) of electrically conductive elements (4) disposed in an array, is modulated by moving at least one layer (2, 3) relative to the or each other layer (2, 3). The layers (2, 3) maybe substantially planar or substantially non-planar and may be disposed substantially parallel to one another. Relative movement between the layers (2, 3) may retain the substantially parallel orientation or may not retain the substantially parallel orientation. The relative movement may have the effect of changing the spacing between the layers (2, 3) for example to tilt, skew or rotate one layer relative to the or each other layer.
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Onoe et al. "Radar Reflectors with Controllable Reflection", Electronics and Communications in Japan, vol. 63, No. 3, Mar. 1980, pp. 51-58, New York.
British Aerospace Public Limited Company
Lee Benny T.
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