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POLAR MODULATION TRANSMISSION APPARATUS AND POLAR MODULATION TRANSMISSION METHOD

  • US 20090258611A1
  • Filed: 04/09/2009
  • Published: 10/15/2009
  • Est. Priority Date: 04/10/2008
  • Status: Active Grant
First Claim
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1. A polar modulation transmission apparatus comprising:

  • a power adjustment section that adjusts a power level of a high frequency phase modulation signal of a modulation signal based on a power adjustment signal;

    a transmission power amplification section that has a first mode for allowing an operation as a non-linear amplifier and a second mode for allowing an operation as a linear amplifier, and, using an amplitude signal of the modulation signal as a power supply voltage, amplifies the high frequency phase modulation signal and outputs a transmission signal;

    a temperature detection section that measures a temperature near the transmission power amplification section;

    a first temperature compensation section that corrects the amplitude signal and performs temperature compensation for the transmission power amplification section; and

    a second temperature compensation section that corrects the power adjustment signal and performs temperature compensation for the power adjustment section,wherein, in the first mode, only the first temperature compensation section performs temperature compensation according to a measurement result in the temperature detection section, and, in the second mode, the first temperature compensation section and the second temperature compensation section perform temperature compensation according to the measurement result in the temperature detection section.

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