Title :
Beam steering microwave reflector based on electrically tunable impedance surface
Author :
Sievenpiper, D. ; Schaffner, J.
Author_Institution :
HRL Labs. LLC, Malibu, CA, USA
fDate :
10/10/2002 12:00:00 AM
Abstract :
A periodic resonant texture can transform a conductive sheet into a high-impedance surface. By adjusting the resonance frequency using varactor diodes, the surface impedance and the reflection phase are tuned. The reflection phase can be varied across the surface, to create an electronically tunable phase gradient, which can steer a reflected beam in two dimensions.
Keywords :
antenna radiation patterns; beam steering; electric impedance; microwave antennas; periodic structures; reflector antennas; tuning; varactors; 4.2 GHz; beam steering microwave reflector; conductive sheet; electrically tunable impedance surface; electronically tunable phase gradient; high-impedance surface; periodic resonant texture; radiation patterns; reflection phase; resonance frequency; surface impedance; varactor diodes;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020863
