Patent ID: 6834183
Filing Date: 2004-12-21
Classification: H01Q,H03C,H03L

Abstract:
A system for calibrating mobile station modulation gain settings, comprising:a synthesizer including a phase locked loop (PLL), the PLL for outputting a tuning voltage for controlling a frequency of a voltage controlled oscillator (VCO) modulated signal; and a controller in communication with the PLL for outputting a modulation data signal and including: an analog to digital converter (ADC) for receiving the tuning voltage fed back from the PLL on a VCO gain tracking feedback loop; a gain control lookup table for storing calibration data, determined based on the tuning voltage fed back from the PLL on the VCO gain tracking feedback loop, one or more respective mobile station sub-bands; and a gain setting DAC for outputting a modulation gain control signal to the synthesizer, the modulation gain control signal being derived from the calibration data retrieved from the lookup table based on a mobile station sub-band of operation, the modulation gain control signal depending on a curve estimating methodology to mitigate noise associated with the calibration data.