公开(公告)号：US11517283B2

公开(公告)日：2022-12-06

申请号：US16475411

申请日：2018-01-02

申请人： KONINKLIJKE PHILIPS N. V.

发明人： Jacobus Josephus Leijssen ,  Gerardus Johannes Nicolaas Doodeman ,  Rick Bezemer ,  Mark Peter Paul Kleijnen ,  Wouter Herman Peeters

IPC分类号： A61B7/00 ,  A61B5/08 ,  A61B5/00 ,  H01Q1/52 ,  H01Q7/06 ,  A61B7/02 ,  A61B5/243 ,  A61B5/242 ,  A61B5/05 ,  G01R29/08 ,  H04R3/00

摘要： The invention provides a magnetic inductive sensing device (30) comprising a loop antenna (10) for inductively coupling with electromagnetic (EM) signals emitted from a medium in response to stimulation of the medium with electromagnetic excitation signals. The device includes an electromagnetic shield (36) element which is arranged such as to intercept electromagnetic signals travelling to or from the antenna. The shield element is formed of conductive material such as to block electrical field components of incident signals but further incorporates a non-conductive gap in the material so as to prevent the formation of eddy currents. A loop of the antenna is broken by an opening, the opening being bridged by a capacitor, and the device comprises a signal processing means which is electrically coupled to the antenna via only a single point of the antenna, located to one side of the opening.