US 12,259,281 B2
Non-invasive analyte sensor with superheterodyne circuit
Edward Stephen Lowe, Jr., Seattle, WA (US)
Assigned to KNOW LABS, INC., Seattle, WA (US)
Filed by Know Labs, Inc., Seattle, WA (US)
Filed on Nov. 10, 2021, as Appl. No. 17/454,383.
Prior Publication US 2023/0145524 A1, May 11, 2023
Int. Cl. G01N 22/00 (2006.01); A61B 5/145 (2006.01); G01K 13/10 (2006.01); H01Q 1/24 (2006.01); H04B 1/26 (2006.01)
CPC G01K 13/10 (2013.01) [A61B 5/14532 (2013.01); A61B 5/14546 (2013.01); G01N 22/00 (2013.01); H01Q 1/247 (2013.01); H04B 1/26 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A non-invasive analyte sensor system, comprising:
an antenna array having at least two antennas each of which is configured to emit and receive radio frequency electromagnetic waves;
a transmit circuit that is selectively electrically connectable to any one or more of the at least two antennas, the transmit circuit includes a first radio frequency signal generator that is configured to generate at least one transmit signal in a radio frequency range of the electromagnetic spectrum to be transmitted into a target by the one or more of the at least two antennas the transmit circuit is electrically connected to; and
a receive circuit that is selectively electrically connectable to any one or more of the at least two antennas; the receive circuit includes a mixer with a first input that is electrically connectable to the one or more of the at least two antennas the receive circuit is electrically connected to, and a second radio frequency generator connected to a second input of the mixer, the mixer is configured to generate a radio frequency output signal that is based on signals received via the first input and the second input, and the mixer includes an output that outputs the generated radio frequency output signal.