US 12,135,246 B2
Wirelessly powered resistive sensor
Chunqi Qian, Okemos, MI (US); and Wei Qian, Okemos, MI (US)
Assigned to Board of Trustees of Michigan State University, East Lansing, MI (US)
Filed by Board of Trustees of Michigan State University, East Lansing, MI (US)
Filed on Mar. 14, 2022, as Appl. No. 17/693,542.
Claims priority of provisional application 63/161,097, filed on Mar. 15, 2021.
Prior Publication US 2022/0291054 A1, Sep. 15, 2022
Int. Cl. G01K 7/18 (2006.01); H03H 11/02 (2006.01)
CPC G01K 7/18 (2013.01) [H03H 11/02 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A wirelessly powered resistive sensor, comprising:
an antenna;
a parametric resonator configured to receive a pumping signal from the antenna and operable to oscillate at a frequency; and
a resistive loop circuit having a resistor, wherein the resistive loop circuit is inductively coupled to the parametric resonator, such that oscillation frequency of the parametric resonator changes with changes in resistance of the resistance loop circuit.