Temporal microwave ghost imaging using a reconfigurable disordered cavity

Mohammadreza F. Imani, David R. Smith

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


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.

Original languageEnglish (US)
Article number054102
JournalApplied Physics Letters
Issue number5
StatePublished - Feb 3 2020
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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