Modulators – Frequency modulator – Including stabilization or alternatively distortion – noise...
Patent
1997-10-30
2000-03-07
Kinkead, Arnold
Modulators
Frequency modulator
Including stabilization or alternatively distortion, noise...
332124, 332123, 455 44, 4552321, 455254, 455 75, 375345, H03C 308
Patent
active
06034573&
ABSTRACT:
A method and apparatus for continuously calibrating the modulation sensitivity of a voltage controlled oscillator (VCO) within a modulator of a transmitter. In accordance with the present invention, the transmitter is coupled to the receiver in order to loop back the transmit signal. The present invention includes a baseband signal generator which generates a reference baseband signal of known amplitude during periods when no other baseband information is being applied to the transmitter by the user. A Signal and Reference Comparison Circuit (SRCC) receives the output from the demodulator and determines whether the VCO within the transmitter has the proper modulation sensitivity. If the modulation sensitivity of the VCO is not within a desired range, then a signal generated by the SRCC is applied to a baseband level control circuit to adjust the level of the baseband signal that is applied to the VCO.
REFERENCES:
patent: 5832022 (1998-11-01), Scott
Kinkead Arnold
Uniden San Diego Research & Development Center, Inc.
LandOfFree
Method and apparatus for calibrating modulation sensitivity does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for calibrating modulation sensitivity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for calibrating modulation sensitivity will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-366787