• US 20120007435A1
  • Filed: 06/28/2011
  • Published: 01/12/2012
  • Est. Priority Date: 06/30/2010
  • Status: Active Grant
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First Claim
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1. A power generator comprising:

  • a power generating section that outputs DC energy;

    an oscillator that converts the DC energy into RF energy having a frequency f0;

    a first antenna that transmits the RF energy, the first antenna including a first inductor and a first capacitor that are connected together in series to form a series resonant circuit with a resonant frequency fT;

    a second antenna that receives, by coupling a resonant magnetic field, at least a part of the RF energy that has been transmitted by the first antenna, the second antenna including a second inductor and a second capacitor that are connected in parallel with each other to form a parallel resonant circuit with a resonant frequency fR; and

    an output converting section that converts the RF energy that has been supplied from the second antenna into AC energy having a lower frequency than the RF energy,wherein the resonant frequencies fT and fR are set to be substantially equal to the frequency f0 of the RF energy, andif the oscillator has a voltage step-up ratio Voc,the output converting section has a voltage step-up ratio Vtr,the first inductor has an inductance L1,the second inductor has an inductance L2, andthe first and second antennas have a coupling coefficient k,the power generator satisfies (L2/L1) (k/(Voc×


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