US 12,309,614 B1
System and method for controlling electromagnetic radiation in a geographical area
Kwang-Cheng Chen, Lutz, FL (US); Mehmet Mert Sahin, Tampa, FL (US); Huseyin Arslan, Tampa, FL (US); and Gokhan Mumcu, Tampa, FL (US)
Assigned to University of South Florida, Tampa, FL (US)
Filed by University of South Florida, Tampa, FL (US)
Filed on Aug. 25, 2022, as Appl. No. 17/895,283.
Claims priority of provisional application 63/236,866, filed on Aug. 25, 2021.
Int. Cl. H04W 16/28 (2009.01); H04B 7/145 (2006.01); H04W 16/14 (2009.01); H04W 16/18 (2009.01)
CPC H04W 16/28 (2013.01) [H04B 7/145 (2013.01); H04W 16/14 (2013.01); H04W 16/18 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for controlling electromagnetic radiation in a geographical area, the method comprising:
generating, by a primary wireless system positioned in a geographical area, a primary electromagnetic signal for primary users within a primary use region of the geographical area;
transmitting, by the primary wireless system, the primary electromagnetic signal into the primary use region of the geographical area;
generating, by a secondary wireless system positioned in the geographical area, a secondary electromagnetic signal for secondary users within a secondary use region of the geographical area;
transmitting, by the secondary wireless system, the secondary electromagnetic signal into the secondary use region of the geographical area;
forming, by at least one-microcontroller, an ambient backscatter communication (ABC) antenna array comprising antenna of a plurality of ABC nodes positioned in close proximity to the primary use region of the geographical area;
receiving, at the ABC antenna array, the secondary electromagnetic signal;
generating, by the at least one micro-controller, an adjusted secondary electromagnetic signal by adjusting one or more of a phase and amplitude of the secondary electromagnetic signal received at the ABC antenna array; and
transmitting, by the ABC antenna array, the adjusted secondary electromagnetic signal into the primary use region, wherein transmission of the adjusted secondary electromagnetic signal by the ABC antenna array into the primary use region decreases interference of the primary electromagnetic signal by the secondary electromagnetic signal for the primary users within the primary use region.