US 11,918,332 B2
Inductive sensing device and method
Wouter Herman Peeters, Waalre (NL); Jacobus Josephus Leijssen, Waalre (NL); Gerardus Johannes Nicolaas Doodeman, Eindhoven (NL); Rick Bezemer, Eindhoven (NL); Mark Peter Paul Kleijnen, Eindhoven (NL); and Ronny Hubertus Johannes Grosfeld, Valkenswaard (NL)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 17/273,361
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Aug. 28, 2019, PCT No. PCT/EP2019/072896
§ 371(c)(1), (2) Date Mar. 4, 2021,
PCT Pub. No. WO2020/048834, PCT Pub. Date Mar. 12, 2020.
Claims priority of application No. 18192484 (EP), filed on Sep. 4, 2018.
Prior Publication US 2021/0321898 A1, Oct. 21, 2021
Int. Cl. A61B 5/05 (2021.01); A61B 5/00 (2006.01)
CPC A61B 5/05 (2013.01) [A61B 5/7225 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An inductive sensing device for inductively coupling electromagnetic signals into and out of a medium, the device comprising:
a resonator circuit formed by a first loop part coupled with a capacitor; and
a second loop part;
respective conductor lines forming the first and second loop parts being radially spaced from one another along at least portions of the conductor lines; and
an active buffering component, via which an output of the resonator circuit is electrically connected to the second loop part, the active buffering component adapted to implement voltage to current amplification, and an output of the active buffering component configured to drive an alternating current in the second loop part.