Local oscillator frequency-based proximity sensor
AssigneeWiliot, Ltd.
InventorsAlon YEHEZKELY, Nir SHAPIRA
Life of this patent
Estimating the term…
Abstract
A local oscillator frequency-based proximity sensor is disclosed. The proximity sensor includes: an integrated circuit having at least a capacitive element; and an antenna designed with an inductive element; wherein the capacitive element and the inductive element form a proximity sensor oscillating at a local oscillator (LO) frequency, wherein the integrated circuit is configured to measure a frequency offset from the LO frequency, wherein the frequency offset is indicative of a detection of a nearby object.
Claims28
A local oscillator frequency-based proximity sensor, comprising:
- an integrated circuit having at least a capacitive element;
- and
- an antenna designed with an inductive element;
- wherein the capacitive element and the inductive element form a proximity sensor oscillating at a local oscillator (LO) frequency, wherein the integrated circuit is configured to measure a frequency offset from the LO frequency, wherein the frequency offset is indicative of a detection of a nearby object.
A battery-less Internet of things (IoT) tag integrated with a proximity sensor, comprising:
- a transmit antenna designed to have an inductive element;
- and
- an integrated circuit having a capacitive element;
- wherein the inductive element and the capacitive element form the proximity sensor oscillating at a local oscillator (LO) frequency, and wherein a frequency offset from the LO frequency is indicative of a detection of a nearby object.
A method for detecting a proximity of a nearby object, comprising:
- determining a local oscillator (LO) frequency of a proximity sensor;
- measuring a current oscillating frequency of the proximity sensor;
- determining a frequency offset between the LO frequency and the current oscillating frequency during a measurement window;
- and
- determining if the frequency offset exceeds a predetermined threshold, wherein the frequency offset exceeding the predetermined threshold is indicative of at least a detection of a nearby object.
A local oscillator frequency-based proximity sensor, comprising:
- an antenna designed to have an inductive element;
- and
- an integrated circuit having a capacitive element;
- wherein the inductive element and the capacitive element form the proximity sensor oscillating at a local oscillator (LO) frequency, wherein the integrated circuit is configured to measure a current oscillating frequency of the proximity sensor, and wherein a frequency offset from the LO frequency is indicative of a detection of a nearby object.
Dependencies are inferred from the claim text.