# US 2021/0172811 A1 · Single layer lc oscillator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0172811 A1 - Document ID: US20210172811A1 - Status: Published application - Kind: A1 - Application number: 16/708,831 - Filed: 2019-12-10 - Published: 2021-06-10 - Earliest claimed: 2019-12-10 - Assignees: Wiliot, Ltd. - Applicants: Wiliot, Ltd. - Inventors: Alon YEHEZKELY; Yaron ELBOIM - Web page: https://patentgrep.com/patent/US20210172811A1 ## CPC - G01K 7/32: using change of resonant frequency of a crystal - G01K 15/005: {Calibration} - G01K 1/024: for remote indication - G01K 7/34: using capacitative elements (capacitors per se H01G) - H03B 5/12: active element in amplifier being semiconductor device (H03B5/14 takes precedence) - Y02D 30/70: in wireless communication networks - G01K: MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (radiation pyrometry G01J5/00) - H03B: GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS (generators adapted for electrophonic musical instruments G10H; masers or lasers H01S; generation of oscillations in plasma H05H) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract An LC oscillator is provided. The LC oscillator includes a single layer inductor disposed within a single layer inlay, wherein the single layer inductor is configured in a spiral pattern within the layer of the inlay, wherein an integrated circuit is mounted on the single layer inlay; and a capacitor included in the integrated circuit, wherein the capacitor is connected to the single layer inductor. ## Claims ### Claim 1 An inductor-capacitor (LC) oscillator, comprising: a single layer inductor disposed within a single layer inlay, wherein the single layer inductor is configured in a spiral pattern within the layer of the inlay, wherein an integrated circuit is mounted on the single layer inlay; and a capacitor included in the integrated circuit, wherein the capacitor is connected to the single layer inductor. ### Claim 2 (depends on 1) The LC oscillator of claim 1, wherein the single layer inductor is configured to use the integrated circuit as a via to generate multiple turns to create an inductor coil of the single layer inductor. ### Claim 3 (depends on 1) The LC oscillator of claim 1, wherein, during production of the LC oscillator, at least one frequency of the LC oscillator is measured respective of a temperature value. ### Claim 4 (depends on 3) The LC oscillator of claim 3, wherein a set of frequencies of the LC oscillator and respective temperature values are saved in a look-up table. ### Claim 5 (depends on 4) The LC oscillator of claim 4, wherein during operation a frequency of the LC is derived based a frequency measured during production and information saved in the look-up table. ### Claim 6 (depends on 4) The LC oscillator of claim 4, wherein the LC oscillator is calibrated based on an ambient temperature, values in the look-up table and a previously determined and calibrated LC relative frequency. ### Claim 7 (depends on 1) The LC oscillator of claim 1, wherein the LC oscillator is further connected to at least one antenna through to the integrated circuit. ### Claim 8 (depends on 7) The LC oscillator of claim 7, wherein a frequency of a signal of the oscillator is measured using signals received through at least one antenna. ### Claim 9 (depends on 8) The LC oscillator of claim 8, wherein the measured frequency of the LC oscillator is a relative frequency code. ### Claim 10 (depends on 9) The LC oscillator of claim 9, wherein an ambient temperature at the LC oscillator is determined based on the LC relative frequency code. ### Claim 11 (depends on 1) The LC oscillator of claim 1, wherein the capacitor is a dedicated capacitor included in the integrated circuit, wherein the dedicated capacitor is a configurable low temperature-sensitivity capacitor. ### Claim 12 (depends on 1) The LC oscillator of claim 1, wherein the capacitor includes parasitic capacitance from circuits included in the integrated circuit, wherein a dedicated capacitor is connected in parallel to the parasitic capacitance. ### Claim 13 (depends on 1) The LC oscillator of claim 1, wherein the capacitor is adjusted to store a lower amount of electrical energy and increase a temperature sensitivity of the LC oscillator. ### Claim 14 An oscillator calibration circuit, comprising: a signal frequency detector for producing a reference signal based on a received over-the-air signal, wherein the signal frequency detector is configured to detect a frequency of the over-the-air signal; an inductor-capacitor (LC) oscillator; and a first frequency locking circuit (FLC) coupled to the signal frequency detector and to the LC oscillator, wherein the first FLC calibrates the frequency of the LC oscillator using the reference signal of a radio frequency (RF) carrier frequency, wherein the reference signal is utilized for calibrating the LC oscillator based on the frequency of the detected over-the-air signal. ### Claim 15 (depends on 14) The oscillator calibration circuit of claim 14, further comprising a second FLC circuit coupled the LC oscillator and to a second oscillator, wherein an output signal of the LC oscillator serves and a reference signal for the second oscillator; and wherein the first FLC and the second FLC are configured to modulate the over-the-air signal and the reference signal, respectively. ### Claim 16 (depends on 14) The oscillator calibration circuit of claim 14, wherein the oscillator calibration circuit does not include any assembled resonator component. ### Claim 17 (depends on 14) The oscillator calibration circuit of claim 14, wherein the LC oscillator further comprises: a single layer inductor disposed within a single layer inlay, wherein the single layer inductor is configured in a spiral pattern within the layer of the inlay, wherein an integrated circuit is mounted on the single layer inlay; and a capacitor included in the integrated circuit, wherein the capacitor is connected to the single layer inductor. ### Claim 18 A temperature sensor, comprising: an inductor-capacitor (LC) oscillator configured with a high quality factor; and a look-up table stored in a memory, wherein the look-up table containing a set of frequencies as a function of temperature values, wherein when the LC oscillator is calibrated to a frequency out of the set of frequencies, the respective temperature as stored in the look-up table is retrieved. ### Claim 19 (depends on 18) The temperature sensor of claim 18, wherein the LC oscillator comprises: a single layer inductor disposed within a single layer inlay, wherein the single layer inductor is configured in a spiral pattern within the layer of the inlay, wherein an integrated circuit is mounted on the single layer inlay; and a capacitor included in the integrated circuit, wherein the capacitor is connected to the single layer inductor.