System and method for using a saw based RF transmitter for AM modulated transmission in a TPM
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United States of America Patent
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Apr 5, 2005
Grant Date -
Sep 4, 2003
app pub date -
Dec 17, 2002
filing date -
Mar 1, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
For use in a tire pressure monitoring system, an amplitude modulation (AM) 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 AM output signal having an RF carrier frequency and an envelope, wherein the envelope is amplitude modulated by the modulation signal and the generator includes a frequency determining device.
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