Temperature-stable FBAR transmitter
First Claim
1. A method comprising:
- calculating a first frequency drift associated with an oscillator at a current temperature;
based on the calculation, generating a first signal indicative of temperature compensation data;
generating a second signal indicative of packet data and a modulation schemeusing the first signal, the second signal, and a first predetermined signal to generate a first tuning signal; and
using the first tuning signal to tune a first capacitor array coupled to the oscillator and a second tuning signal to tune a second capacitor array coupled to the oscillator such that (i) the oscillator generates a modulated RF signal indicative of the packet data and (ii) the modulated RF signal has a second frequency drift that is less than a threshold.
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Abstract
The present disclosure relates to a method that includes calculating a first frequency drift associated with an oscillator at a current temperature; based on the calculation, generating a first signal indicative of temperature compensation data; generating a second signal indicative of packet data and a modulation scheme; using the first signal, the second signal, and a first predetermined signal to generate a first tuning signal; and using the first tuning signal to tune a first capacitor array coupled to the oscillator and a second tuning signal to tune a second capacitor array coupled to the oscillator such that (i) the oscillator generates a modulated RF signal indicative of the packet data and (ii) the modulated RF signal has a second frequency drift that is less than a threshold.
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Citations
20 Claims
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1. A method comprising:
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calculating a first frequency drift associated with an oscillator at a current temperature; based on the calculation, generating a first signal indicative of temperature compensation data; generating a second signal indicative of packet data and a modulation scheme using the first signal, the second signal, and a first predetermined signal to generate a first tuning signal; and using the first tuning signal to tune a first capacitor array coupled to the oscillator and a second tuning signal to tune a second capacitor array coupled to the oscillator such that (i) the oscillator generates a modulated RF signal indicative of the packet data and (ii) the modulated RF signal has a second frequency drift that is less than a threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A broadcasting unit comprising:
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an oscillator; a first capacitor array and a second capacitor array coupled to the oscillator; a temperature sensor; a controller comprising a processor programmed to; calculate a first frequency drift associated with the oscillator at a current temperature; based on the calculation, generate a first signal indicative of temperature compensation data; generate a second signal indicative of packet data and a modulation scheme; use the first signal, the second signal, and a first predetermined signal to generate a first tuning signal; and use the first tuning signal to tune the first capacitor array and a second tuning signal to tune the second capacitor array such that (i) the oscillator generates a modulated RF signal indicative of the packet data and (ii) the modulated RF signal has a second frequency drift that is less than a threshold. - View Dependent Claims (13, 14, 15)
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16. A system comprising:
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a sensor; a transceiver coupled to the sensor, the transceiver comprising; an oscillator comprising a thin-film bulk acoustic resonator (FBAR); a first capacitor array and a second capacitor array coupled to the oscillator; a temperature sensor; and an antenna; a controller comprising a processor programmed to; calculate a first frequency drift associated with the oscillator at a current temperature; based on the calculation, generate a first signal indicative of temperature compensation data; generate a second signal indicative of packet data and a modulation scheme; use the first signal, the second signal, and a first predetermined signal to generate a first tuning signal; and use the first tuning signal to tune the first capacitor array and a second tuning signal to tune the second capacitor array such that (i) the oscillator generates a modulated RF signal indicative of the packet data and (ii) the modulated RF signal has a second frequency drift that is less than a threshold. - View Dependent Claims (17, 18, 19, 20)
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Specification