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公开(公告)号:US06834183B2
公开(公告)日:2004-12-21
申请号:US10287382
申请日:2002-11-04
申请人: Gregory Black , Daniel B Schwartz , Kevin Traylor
发明人: Gregory Black , Daniel B Schwartz , Kevin Traylor
IPC分类号: H04B1118
CPC分类号: H01Q3/267 , H03C3/0925 , H03C3/0941 , H03C3/0975 , H03L7/1974
摘要: Voltage controlled oscillator (VCO) gain tracking is used for programming modulation gain settings to minimize modulation distortion in a phase locked loop of a mobile station (10). A synthesizer (20) generates a tuning voltage (Vt) for controlling a frequency of a (VCO) modulated radio frequency signal. A controller (22) outputs a modulation data signal and includes an ADC (72) for receiving the tuning voltage from the synthesizer (20) on a VCO feedback loop (70), a gain control lookup table (LUT) (76) for storing gain setting calibration data for respective mobile station sub-bands, and a gain setting (DAC) (78) for outputting a modulation gain control signal to the synthesizer (20). The modulation gain setting calibration data is calibrated using a one-time or continuous calibration methodlogy during, respectively, a background or normal mode of operation.
摘要翻译: 压控振荡器(VCO)增益跟踪用于编程调制增益设置以使移动台(10)的锁相环中的调制失真最小化。 合成器(20)产生用于控制(VCO)调制的射频信号的频率的调谐电压(Vt)。 控制器(22)输出调制数据信号,并且包括用于在VCO反馈回路(70)上从合成器(20)接收调谐电压的ADC(72),用于存储的增益控制查找表(LUT) 增益设定各个移动台子频带的校准数据,以及用于向合成器(20)输出调制增益控制信号的增益设定(DAC)(78)。 分别在背景或正常操作模式下,使用一次或连续校准方法来校准调制增益设置校准数据。