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Power generation circuit for generating and storing electric power utilizing radio wave energy

  • US 8,513,927 B2
  • Filed: 04/14/2011
  • Issued: 08/20/2013
  • Est. Priority Date: 05/12/2004
  • Status: Active Grant
First Claim
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1. A power generation circuit for generating and storing electric power utilizing radio wave energy, the power generating circuit, comprising:

  • one of an antenna or a coil that receives an ambient radio wave;

    a rectifying circuit that is formed on a silicon substrate and is connected to the antenna or the coil and that rectifies a signal from the antenna or the coil receiving the ambient radio wave;

    a storage circuit that stores an output power obtained from the rectifying circuit for driving a load without the use of a power source or a battery; and

    a MOS transistor having a source and a drain connected to an output of the storage circuit and the load, respectively, and a gate connected to another terminal of the storage circuit, so that the load is connected to the storage circuit in accordance with a threshold voltage of the MOS transistor.

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