Local oscillator frequency-based proximity sensor
AssigneeWiliot, Ltd.
InventorsAlon Yehezkely, Nir Shapira
Life of this patent
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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.
Claims23
A local oscillator frequency-based proximity sensor, comprising:
- an integrated circuit having at least a capacitive element;
- an antenna designed with an inductive element;
- and
- an inlay, wherein the integrated circuit and the antenna are etched within the inlay;
- 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;
- a harvesting antenna connected to a harvester, wherein the harvester is configured to harvest energy from ambient signals;
- and
- an energy storage for storing the harvested energy;
- 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 local oscillator frequency-based proximity sensor, comprising:
- an antenna designed to have an inductive element;
- an integrated circuit having a capacitive element;
- determine a digital word corresponding to the measured current oscillating frequency;
- and
- transmit the digital word to an external analytic system through the antenna, wherein the frequency offset is determined by the external analytic system;
- 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.