{
  "$type": "site.standard.document",
  "description": "A wireless power transmission device includes: a power transmission antenna a radiation direction determiner; an orientation direction changer; and a transmission signal generator. The power transmission antenna is a phased array antenna including: a plurality of element antennas to radiate radio…",
  "path": "/patents/1276481",
  "publishedAt": "2020-11-12T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R29/10",
    "Mitsubishi Electric Corporation"
  ],
  "textContent": "A wireless power transmission device includes: a power transmission antenna a radiation direction determiner; an orientation direction changer; and a transmission signal generator. The power transmission antenna is a phased array antenna including: a plurality of element antennas to radiate radio waves; and a plurality of element modules, each of the plurality of element modules including a phase shifter to change a phase of a transmission signal and an amplifier to amplify the transmission signal from the power transmission antenna. A phase offset value for the phase shifter included in each of the plurality of element modules is calculated by performing a REV (rotating element electric field vector) method using an aerial moving body hovering over the power transmission antenna and mounting a measurement antenna to receive a radio wave and a radio wave measurer to measure received radio wave data including an amplitude of the radio wave received by the measurement antenna.",
  "title": "WIRELESS POWER TRANSMISSION DEVICE AND POWER TRANSMISSION SYSTEM TO AERIAL MOVING BODY"
}