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    • 6. 发明申请
    • A TRANSMITTER AND A METHOD OF CALIBRATING POWER IN SIGNALS OUTPUT FROM A TRANSMITTER
    • 一种发射机和一种校准信号发射机输出功率的方法
    • WO2004030246A1
    • 2004-04-08
    • PCT/GB2003/004178
    • 2003-09-24
    • QUALCOMM (UK) LIMITEDJANOSEVIC, ZoranFRANKLAND, Stephen
    • JANOSEVIC, ZoranFRANKLAND, Stephen
    • H04B17/00
    • H03F1/02H03F1/32H03F3/24H03F2200/336H04B17/13H04W52/226H04W52/52
    • A transmitter circuit (10) with a first characteristic controllable by a first control signal and a second characteristic controllable by a second control signal is calibrated using a calibration method to enable accurate power control. The transmitter circuit (10) will typically comprise a VGA amplifier (16) and a power amplifier (22). Typically, the gain of the VGA amplifier 16 is controlled and so is the current supplied to the power amplifier (22). The method comprises a number of operations including defining a set of multiple signal values for the first control signal, setting the first control signal to a level corresponding to a signal value from the set of multiple first control signal values. Then the second control signal is adjusted to cause the transmitter to operate in a desired manner and the power in a signal transmitted by the transmitter is measured. The setting, adjusting and measuring is repeated for each signal value in the set of multiple first control signal values.
    • 具有由第一控制信号控制的第一特性和由第二控制信号控制的第二特性的发射机电路(10)使用校准方法进行校准,以实现精确的功率控制。 发射机电路(10)通常将包括VGA放大器(16)和功率放大器(22)。 通常,VGA放大器16的增益受到控制,而提供给功率放大器(22)的电流也被控制。 该方法包括多个操作,包括定义用于第一控制信号的一组多个信号值,将第一控制信号设置为与多个第一控制信号值的集合中的信号值对应的电平。 然后调整第二控制信号以使发射机以期望的方式工作,并且测量由发射机发射的信号中的功率。 在多个第一控制信号值的集合中的每个信号值重复设置,调整和测量。