VCO gain tracking for modulation gain setting calibration

A mobile station controller for controlling a dual port synthesizer, comprising:

• an analog to digital controller (ADC) for receiving a tuning voltage fed back on a voltage controlled oscillator (VCO) gain tracking feedback loop and for converting the tuning voltage to a digital signal;
• a lookup table for storing high port gain calibration settings for one or more respective mobile station sub-bands, the high port gain calibration setting being based on the tuning voltage fed back on the VCO gain tracking feedback loop;
• and
• a high port gain setting DAC for outputting a high port gain control signal based on the high port gain calibration settings stored in the lookup table in response to a mobile station sub-band of operation, the high port gain control signal further based on a curve estimating methodolgy to mitigate noise associated with the high port gain calibration settings.

A method of calibrating modulation gain settings of a mobile station, comprising:

• looking up stored calibration parameters, including at least one of a number of sub-bands and number of channel measurements required for calibration of one or more of the number of sub-bands;
• transmitting on the one or more of the number of sub-bands;
• measuring fed-back tuning voltages resulting from the transmitting on the one or more of the number of sub-bands;
• and
• storing calibration data calculated based on the measuring of fed-back tuning voltages resulting from the transmitting on the one or more of the number of sub-bands for later use in determining respective modulation gain settings for the one or more of the number of sub-bands, the modulation gain settings further based on a curve estimating methodology to mitigate noise associated with the measuring of the fed-back tuning voltages.

A method of continuously updating high port gain calibration settings of a mobile station dual port input synthesizer, comprising:

• initiating a background mode of transmitter operation;
• measuring respective tuning voltages resulting from the initiating of a background mode of operation during transmitter operation at different locations in a mobile station sub-band of operation, each of which is input from a voltage controlled oscillator (VCO) gain tracking feedback loop;
• determining a high port gain calibration setting for the mobile station sub-band of operation based on a calculated polynomial model of tuning voltage versus frequency for the mobile station sub-band of operation, the calculated polynomial model based on a curve estimating methodology to mitigate noise associated with the measuring respective tuning voltages;
• and
• storing the high port gain calibration setting for setting high port gain for the mobile station sub-band of operation.

A mobile station transmitter configuration, comprising:

• a voltage controlled oscillator (VCO) for generating a carrier signal and for receiving a tuning voltage to control modulation of a radio frequency (RF) signal on the carrier signal;
• a transmitter in communication with the VCO for transmitting the RF signal;
• a synthesizer for generating the tuning voltage input into the VCO for controlling modulation of the RF signal on the carrier signal;
• and
• a controller including an analog to digital converter (ADC) for receiving the tuning voltage fed back from the synthesizer on a VCO gain tracking feedback loop, a gain control lookup table for storing calibration data for one or more respective mobile station sub-bands, and a digital to analog converter (DAC) for outputting a gain controlled modulation signal, that is based on the calibration data retrieved from the lookup table and based on a curve estimating methodology to mitigate noise associated with the calibration data.