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Transmitter

  • US 20050136854A1
  • Filed: 12/01/2004
  • Published: 06/23/2005
  • Est. Priority Date: 12/04/2003
  • Status: Abandoned Application
First Claim
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1. A transmitter, comprising:

  • a modulation wave signal generation unit that generates a modulation wave signal;

    a phase/amplitude separation unit that separates the modulation wave signal generated by the modulation wave signal generation unit into a phase component and an amplitude component;

    a first voltage conversion unit that outputs a predetermined voltage with respect to the amplitude component and varies the output voltage from a minimum value to a maximum value in accordance with a variation of the amplitude component from a minimum value to a maximum value;

    a second voltage conversion unit that outputs a predetermined voltage with respect to the voltage output from the first voltage conversion unit;

    a frequency conversion unit that converts the phase component output from the phase/amplitude separation unit into a frequency to be transmitted; and

    a high-frequency power amplifier, in which an output signal of the frequency conversion unit is supplied to a high-frequency input terminal, the output voltage of the first voltage conversion unit is applied to a base terminal or a gate terminal, and the output voltage of the second voltage conversion unit is applied to a collector terminal or a drain terminal, the high-frequency power amplifier outputting a modulated wave in which an amplitude and a phase are multiplied with each other.

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