Patent References 3927369 Resonant sensing devices and methods for determining surface properties of test pieces Article surveillance Resonant circuit sensor of multiple properties of objects Process for fabricating resonant tag circuit constructions Acoustic transducers for acoustic position sensing apparatus Tire pressure sensor and sensing system Web thickness sensor using loop-gap resonator Tire inspection device Transducer AbstractA planar electromagnetic resonator utilizes an electromagnetically active material located between the capacitive or inductive elements of the resonator. A microscopic electrical property of this material is altered by an external condition, and that alteration, in turn, affects the behavior of the resonator in a consistent and predictable manner.Field of SearchLumped type parametersOf a resonant circuit For figure of merit or Q value Including a tuned or resonant circuit Electrically energized nonforce type sensor Oscillator type Induced voltage-type sensor TRANSFORMERS AND INDUCTORS WITH INTEGRAL SWITCH, CAPACITOR, OR LOCK (E.G., IGNITION COIL) With capacitor element Single-ended, separately-driven type WITH DEVICE RESPONSIVE TO EXTERNAL PHYSICAL CONDITION Temperature or light responsive Having tuned resonant circuit Disturbance of magnetic field Solid dielectric type | |