Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 16, Issue -, Pages 1337-1340Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2016.2633964
Keywords
Antenna; beam reconfiguration; mechanical tuning
Funding
- Natural Sciences and Engineering Research Council of Canada
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This letter presents a beam-reconfigurable super-strate antenna with a periodic flexible surface composed of an array of liquid-metal-filled microchannels inside a polymer. Two beam-reconfiguration techniques are used here: 1) stretching the surface along one axis where the radiation pattern depends on the elongation percentage; and 2) reshaping the surface to concave/convex where the pattern depends on surface state. Elongation and reshaping can split the broadside beam to two beams up to +/-55 degrees and +/-58 degrees off-broadside, respectively. This technique can be used as a simple low-cost alternative to electronic tuning that requires integration of an array of switches/varactors into the surface and hinder the fabrication of large-scale tunable surfaces and aperture antennas.
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