# US 11,309,863 B2 · Multi-function frequency control device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,309,863 B2 - Document ID: US11309863B2 - Status: Granted - Kind: B2 - Application number: 16/154,067 - Filed: 2018-10-08 - Published: 2019-02-14 - Granted: 2022-04-19 - Earliest claimed: 2012-10-08 - Assignees: Rakon Limited - Applicants: Rakon Limited - Inventors: Brent John Robinson - Web page: https://patentgrep.com/patent/US11309863B2 ## CPC - H03H 9/08: Holders with means for regulating temperature - G01K 1/14: Supports; Fastening devices; Arrangements for mounting thermometers in particular locations - G01K 7/22: the element being a non-linear resistance, e.g. thermistor (G01K7/26 takes precedence) - G01K 11/26: of resonant frequencies - H03B 5/326: {the resonator being an acoustic wave device, e.g. SAW or BAW device} - H03H 9/0547: {consisting of a vertical arrangement (H03H9/0566 takes precedence)} - H03H 9/0552: {the device and the other elements being mounted on opposite sides of a common substrate} - H03H 9/1007: {for bulk acoustic wave [BAW] devices} - H03H 9/205: having multiple resonators (crystal tuning forks H03H9/21) - H03H 9/1021: {the BAW device being of the cantilever type} - H03H 9/1057: {for microelectro-mechanical devices} - H03H 9/1071: {the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the SAW device} - H03H: IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS (waveguides, resonators, lines or other devices of the waveguide type H01P) - 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) ## Abstract A single frequency control device incorporating a high frequency resonator, a low frequency resonator and a temperature sensing element, the latter thermally coupled closely to the said resonators to facilitate temperature sensing with higher resolution and accuracy. Additional benefits offered by the structure include smaller size and lower cost. ## Claims ### Claim 1 A frequency control device, constructed as a single component, comprising at least three thermally coupled elements: a first resonating element whose resonant frequency is within the HF band or higher, a second resonating element whose resonant frequency is within the LF band or lower, and a temperature sensing element, and wherein, in addition to facilitating the generation of high frequency and low frequency signals, the said resonating elements allow use of an output of the said temperature sensing element and an output frequency of the said second resonating element in correcting for deviation in the output frequency of the said first resonating element or second resonating element due to temperature variations. ### Claim 2 (depends on 1) A frequency control device as in claim 1 wherein the said first resonating element and the said second resonating element are located in a common hermetically sealed cavity. ### Claim 3 (depends on 1) A frequency control device as in claim 1 wherein the said first resonating element and the said second resonating element are located in separate hermetically sealed cavities. ### Claim 4 (depends on 1) A frequency control device as in claim 1 wherein the temperature sensing element is located in a separate cavity. ### Claim 5 (depends on 1) A frequency control device as in claim 1 wherein the said first resonating element, the said second resonating element, and the temperature sensing element are located in a common hermetically sealed cavity. ### Claim 6 (depends on 1) A frequency control device as in claim 1 wherein the said single component comprises a multi-layer ceramic package. ### Claim 7 (depends on 1) A frequency control device as in claim 1 wherein the said first resonating element is a quartz crystal resonating element. ### Claim 8 (depends on 7) A frequency control device as in claim 7 wherein the said first resonating element is a Bulk Acoustic Wave resonating element. ### Claim 9 (depends on 8) A frequency control device as in claim 8 wherein the said first resonating element is an AT-cut crystal resonating element. ### Claim 10 (depends on 8) A frequency control device as in claim 8 wherein the said first resonating element is an SC-cut crystal resonating element. ### Claim 11 (depends on 1) A frequency control device as in claim 1 wherein the said first resonating element is a Surface Acoustic Wave resonating element. ### Claim 12 (depends on 1) A frequency control device as in claim 1 wherein the said first resonating element is a MEMS resonating element. ### Claim 13 (depends on 1) A frequency control device as in claim 1 wherein the said second resonating element is a quartz crystal resonating element. ### Claim 14 (depends on 13) A frequency control device as in claim 13 wherein the said second resonating element is a Tuning Fork crystal resonating element. ### Claim 15 (depends on 1) A frequency control device as in claim 1 wherein the said second resonating element is a MEMS resonating element. ### Claim 16 (depends on 1) A frequency control device as in claim 1 wherein the said temperature sensing element comprises a thermistor. ### Claim 17 (depends on 1) A frequency control device as in claim 1 wherein the said temperature sensing element comprises at least one semiconductor diode. ### Claim 18 (depends on 1) A frequency control device as in claim 1 wherein the said temperature sensing element comprises at least one semiconductor transistor. ### Claim 19 (depends on 1) A frequency control device as in claim 1 wherein the said temperature sensing element comprises a semiconductor temperature sensing circuit. ### Claim 20 (depends on 1) A frequency control device as in claim 1 wherein the said temperature sensing element is a resonating element whose resonant frequency is sensitive to temperature. ### Claim 21 (depends on 1) An electronic device which comprises a frequency control device according to claim 1 which is a cellular communications device. ### Claim 22 (depends on 1) An electronic device which comprises a frequency control device according to claim 1 which is a satellite navigation system receiver. ### Claim 23 (depends on 1) An electronic device which comprises a frequency control device according to claim 1 which is a Wi-Fi capable device. ### Claim 24 (depends on 1) An electronic device which comprises a frequency control device according to claim 1 which is a Bluetooth capable device. ### Claim 25 (depends on 21) An electronic device according to claim 21 arranged to determine the output frequency of the said second resonating element using the output frequency of the said first resonating element as a frequency measurement reference. ### Claim 26 (depends on 22) An electronic device according to claim 22 arranged to determine the output frequency of the said second resonating element using the output frequency of the said first resonating element as a frequency measurement reference. ### Claim 27 (depends on 23) An electronic device according to claim 23 arranged to determine the output frequency of the said second resonating element using the output frequency of the said first resonating element as a frequency measurement reference. ### Claim 28 (depends on 24) An electronic device according to claim 24 arranged to determine the output frequency of the said second resonating element using the output frequency of the said first resonating element as a frequency measurement reference.