公开(公告)号：US20220071502A1

公开(公告)日：2022-03-10

申请号：US17416074

申请日：2019-12-13

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Wouter Herman PEETERS ,  Mark Peter Paul KLEIJNEN ,  Tim Patrick STEUNEBRINK ,  Gerardus Johannes Nicolaas DOODEMAN ,  Rick BEZEMER ,  Carlijn Andrea VERNOOIJ ,  Ercan Ferit GIGI

IPC: A61B5/05

Abstract: An inductive sensing system (8) is adapted to apply electromagnetic excitation signals into a body, the system comprising a resonator circuit (10) incorporating a loop antenna (12). The system senses signals returned back from the body with the same antenna, based on variation in electrical characteristics of the resonator circuit. The system is configured for separating signals received from different physiological sources within the body. This is performed based on detecting in the resonator circuit electrical characteristics indicative of both a real and an imaginary part of an additional inductance component added to the antenna by received electromagnetic signals. The separating the signals from different physiological sources is based on relative magnitudes of said detected real and imaginary inductance components added to the resonator circuit by the returned signals.