Electronically tunable reflector
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Apr 22, 2003
Grant Date -
N/A
app pub date -
Mar 29, 2000
filing date -
Mar 29, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tuneable impedance surface for steering and/or focusing a radio frequency beam. The tunable surface comprises a ground plane; a plurality of elements disposed a distance from the ground plane, the distance being less than a wavelength of the radio frequency beam; and a capacitor arrangement for controllably varying the capacitance of adjacent top plates, the capacitor arrangement including a dielectric material which locally changes its dielectric constant in response to an external stimulus.
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