Koninklijke Philips Corporation N.v.

Ronny Hubertus Johannes Grosfeld

Rick Bezemer

Jacobus Josephus Leijssen

Wouter Herman Peeters

Gerardus Johannes Nicolaas Doodeman

Mark Peter Paul Kleijnen

Mark Kleijnen

An inductive sensing device comprises first () and second () loops, the first loop () being coupled with a capacitor to form a resonator circuit (), and the resonator circuit and second loop being coupled via an active buffering component (). The active buffering component provides voltage to current amplification, and an output of the buffering component drives a current in the second loop. Conductive lines forming each of the first and second loop parts are radially spaced apart.

Inductive sensing device and method

The invention provides a magnetic inductive sensing system for sensing electromagnetic signals emitted from a body in response to electromagnetic excitation signals applied to the body. The electromagnetic signals are generated and sensed by the same loop resonator which comprises a single-turn loop antenna and a tuning capacitor. The loop antenna of the resonator and a signal generation means for exciting the resonator to generate excitation signals are together configured so as to optimize the value of a ratio between the radial frequency of the generated electromagnetic excitation signals and a reference frequency of the antenna, where the reference frequency is the frequency for which one wavelength of the generated excitation signals (waves) matches the circumferential length of the antenna. This ratio, which corresponds to a normalized radial frequency of the generated excitation signals, is maintained between a value of 0.025 and 0.50.

Inductive sensing system for sensing electromagnetic signals from a body

Growing community of inventors

Valkenswaard, Netherlands

Ronny Hubertus Johannes Grosfeld