US 12,267,114 B1
Apparatus, methods and systems for surface electromagnetic wave (SEW)-based underwater and underground communication and imaging
Igor Smolyaninov, Columbia, MD (US); and Quirino Balzano, Annapolis, MD (US)
Assigned to Saltenna LLC, McLean, VA (US)
Filed by Saltenna LLC, McLean, VA (US)
Filed on Jan. 7, 2022, as Appl. No. 17/570,968.
Claims priority of provisional application 63/155,937, filed on Mar. 3, 2021.
Claims priority of provisional application 63/134,918, filed on Jan. 7, 2021.
Int. Cl. H04B 13/02 (2006.01); H04B 1/04 (2006.01); H04B 1/18 (2006.01)
CPC H04B 13/02 (2013.01) [H04B 1/0483 (2013.01); H04B 1/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
an antenna; and
a processor operatively coupled to the antenna,
the processor configured to generate an input signal and send the input signal to the antenna,
the antenna configured to, in response to the input signal, transmit first surface electromagnetic signals along an interface between a first medium and a second medium,
the antenna configured to receive second surface electromagnetic signals in response to the first surface electromagnetic signals scattered by an object disposed in the first medium,
the processor configured to produce an image of the object based on the first surface electromagnetic signals and the second surface electromagnetic signals.