Journal
APPLIED PHYSICS LETTERS
Volume 116, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5135927
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- Air Force Office of Scientific Research (AFOSR) [FA9550-18-1-0187]
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We propose and experimentally demonstrate the principles for microwave temporal ghost imaging using a disordered cavity loaded with a reconfigurable metasurface. The metasurface behaves as a dynamically reconfigurable surface impedance distribution on one wall of the cavity, effectively perturbing the boundary conditions of the cavity and altering the cavity mode distribution. A microwave signal that passes through the cavity is thus modulated by the changing modal distribution. Assuming that this modulation can happen at a rate faster than the receiver temporal resolution, we show that we can recover the original signal by correlating the pre-recorded response of the modulated cavity with that collected by a slow receiver. This device may find applications in encrypting or compressing microwave signals at the hardware level.
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