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APPARATUS AND METHOD FOR CONTROLLING GAIN OF POLAR TRANSMITTER

  • US 20110237210A1
  • Filed: 10/29/2009
  • Published: 09/29/2011
  • Est. Priority Date: 12/02/2008
  • Status: Active Grant
First Claim
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1. An apparatus for controlling gain according to a magnitude change of an output signal in a polar transmitter, the apparatus comprising:

  • a signal generating unit configured to receive and modulate a transmission signal, separate the modulated signal into a phase signal and a magnitude signal, generate a pulse signal by using the magnitude signal, and convert the phase signal into a wireless signal;

    a gain correcting unit configured to extract a transmission gain from magnitude information of a resource block of the transmission signal, provide a gain value to the signal generating unit, and generate an envelope signal for a power amplification by using the pulse signal of the signal generating unit;

    a power amplifying module configured to receive the envelope signal, and perform a power amplification or a simple amplification according to a selection signal and the envelope signal; and

    a gain controlling unit configured to determine a magnitude of a signal generated by the signal generating unit by using a power control signal for the transmission signal, determine a gain mode, and output the selection signal.

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