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SUMMARY:Scattering from a beam-tilting metasurface: analysis and design - 
 Matteo  Albani (Università di Siena)
DTSTART:20230210T110000Z
DTEND:20230210T114500Z
UID:TALK194839@talks.cam.ac.uk
DESCRIPTION:co-authors: Federico Giusti\, Enrica Martini\, Stefano Maci\n\
 n&nbsp\; The new paradigm of smart radio environment\, envisaged in next a
 nd future generation communications (5\,6-G)\, expects the deployment of i
 ntelligent surfaces\, achievable with the metasurface technology. The desi
 gn of such kind of devices\, as well as its modeling in the propagation sc
 enario\, requires the investigation of the associated local canonical prob
 lem of a modulated metasurface (i.e.\, a layered multistrate periodic impe
 dance surface). Specifically\, both the impenetrable total reflecting and 
 the perfectly transparent cases are of interest. The periodic variation of
  the surface impedance layer(s) permits anomalous reflection/transmission 
 which locally permits the wave redirection toward a desired direction\, th
 us reshaping the impinging wavefront as a reflector/lens would do\, indepe
 ndently of the surface geometry that can be conformal to environment struc
 tures (e.g\, buildings). While the analysis problem is quite standard and 
 it is reviewed in the seminar\, the inverse synthesis problem of the imped
 ance design implementing a given wave redirection with the constraints&nbs
 p\;of loss-less and gain-less pure reactive impedances (as required by pow
 er efficient metasurfaces) is much more challenging and is addressed in de
 tails.\n
LOCATION:Seminar Room 1\, Newton Institute
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