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    • 19. 发明授权
    • Power control feedback loop for adjusting a magnitude of an output signal
    • 功率控制反馈回路,用于调整输出信号的幅度
    • US07558539B2
    • 2009-07-07
    • US11238986
    • 2005-09-30
    • Phuong T. HuynhNitin Sharma
    • Phuong T. HuynhNitin Sharma
    • H04B1/04
    • H03G3/3042H03G3/001
    • A circuit for adjusting a magnitude of a transmit signal includes a transmitter (105), providing a transmit signal (107). It also includes a transmitter amplifier (109), receiving the transmit signal (107) and a power control adjustment signal (121), and responsive thereto, providing an amplified transmit signal (111). The circuit also includes a detector (123), for detecting an amplitude of the amplified transmit signal (111). Also included is an error component (137) for determining the difference between the amplitude and a reference level (129). Further provided is a digital signal generator (155), receiving the difference (145), and responsive thereto, generating (157) a reference signal (125) and the power control adjustment signal (117, 121), where the reference level (129) is responsive to the reference signal (125).
    • 用于调整发射信号幅度的电路包括发射机(105),提供发射信号(107)。 它还包括发射放大器(109),接收发射信号(107)和功率控制调整信号(121),并响应于此,提供放大的发射信号(111)。 电路还包括检测器(123),用于检测放大的发射信号(111)的振幅。 还包括用于确定幅度和参考水平(129)之间的差的误差分量(137)。 还提供了一种数字信号发生器(155),其接收差值(145),并响应于此产生(157)参考信号(125)和功率控制调节信号(117,121),其中参考电平(129 )响应于参考信号(125)。