System and method for using a saw based RF transmitter for FM transmission in a TPM
AssigneeLear Corporation
InventorsJohn S. Nantz, Qingfeng Tang, Ronald O. King, Riad Ghabra
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Abstract
For use in a tire pressure monitoring system, a frequency modulation (FM) radio frequency (RF) oscillator includes a modulator and a generator. The modulator may be configured to generate a modulation signal in response to a data input signal. The generator may be configured to generate an FM output signal having a carrier frequency modulated by the modulation signal, wherein the generator includes a frequency determining device.
Claims20
For use in a tire pressure monitoring system, a frequency modulation (FM) radio frequency (RF) oscillator comprising:
- a modulator configured to generate a modulation signal in response to a data input signal;
- and
- a generator configured to generate an FM output signal having a carrier frequency modulated by the modulation signal, wherein the generator comprises a frequency determining device.
For use in a tire pressure monitoring system, a method of generating a frequency modulation (FM) radio frequency (RF) output signal, the method comprising:
- generating a modulation signal in response to a data input signal;
- generating an RF signal having a carrier frequency;
- and
- frequency modulating the carrier frequency of the RF signal with the modulation signal, wherein the RF signal is generated using a generator comprising a frequency determining device.
For use in a remote keyless entry (RKE) system, a frequency modulation (FM) radio frequency (RF) oscillator comprising:
- a modulator configured to generate a modulation signal in response to a data input signal;
- and
- a generator configured to generate an FM output signal having a carrier frequency modulated by the modulation signal, wherein the generator comprises a surface acoustic wave (SAW) device.
Dependencies are inferred from the claim text.