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Power supply device for high frequency power amplifying circuit and high frequency power amplifying apparatus

  • US 9,350,299 B2
  • Filed: 11/07/2014
  • Issued: 05/24/2016
  • Est. Priority Date: 05/08/2012
  • Status: Active Grant
First Claim
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1. A power supply device for a high frequency power amplifying circuit, the power supply device being configured to vary an output voltage supplied as a power supply voltage to the high frequency power amplifying circuit that amplifies a high frequency signal, in accordance with an amplitude change of the high frequency signal, the power supply device comprising:

  • a plurality of bidirectional converters provided between an input section of an input voltage and an output section of the output voltage, the bidirectional converters being configured to include a plurality of frequencies of resonant currents that flow through the plurality of bidirectional converters, the plurality of bidirectional converters being configured to supply and/or regenerate energy;

    an output side energy storing element provided at the output section of the plurality of bidirectional converters;

    a time frequency analysis unit configured to convert an input signal of the high frequency power amplifying circuit to control information that includes frequency information and signal amplitude information on a time axis; and

    a converter controlling circuit configured or programmed to detect an amplitude change of the high frequency signal and to control resonant frequencies and amplitudes of the plurality of bidirectional converters such that the output voltage follows the amplitude change of the high frequency signal.

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