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    • 9. 发明授权
    • Methods and apparatus for power amplifier calibration
    • 功率放大器校准方法和装置
    • US08712339B2
    • 2014-04-29
    • US13396435
    • 2012-02-14
    • Gregory SteeleMichael KohlmannJames M. Gardner
    • Gregory SteeleMichael KohlmannJames M. Gardner
    • H04B1/38
    • H03G3/3042H04B17/13
    • Systems, methods and apparatus a provided for calibrating actual output power of a transmit power sensor for closed loop power control using a quality metric such as error vector magnitude (EVM) to improve power detection accuracy. In aspects, a method for correlating an output of a transmit power sensor with actual output power of a wireless transmitter includes deriving a characteristic correlation between an actual output power of a set of transmit amplifiers and an output power and of a set of corresponding power detection circuits over a range of transmit power levels in a corresponding set of wireless devices; storing the characteristic correlation in a wireless device that is not part of the set from which the characteristic correlation was derived; and sensing an output of a transmit power sensor of the device while the transmitter of the device transmits according to one or more gain settings.
    • 用于使用诸如误差矢量幅度(EVM)的质量度量来校准发射功率传感器的闭环功率控制的实际输出功率的系统,方法和装置,以提高功率检测精度。 在方面中,将发射功率传感器的输出与无线发射机的实际输出功率相关联的方法包括导出一组发射放大器的实际输出功率与输出功率之间的特征相关性以及一组对应的功率检测 在相应的一组无线设备中的发射功率级的范围上的电路; 将特征相关性存储在不是从其导出特征相关性的集合的一部分的无线设备中; 以及当所述设备的发射机根据一个或多个增益设置发送时,感测所述设备的发射功率传感器的输出。