{
  "$type": "site.standard.document",
  "description": "A system of a power device and a portable device for wireless charging of a battery of the portable device, which power device comprises a first antenna to emit a magnetic field and which portable device comprises a portable antenna exposed to the magnetic field and connected to a charge stage to…",
  "path": "/patents/1367875",
  "publishedAt": "2024-08-08T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J50/005",
    "RENESAS DESIGN AUSTRIA GMBH"
  ],
  "textContent": "A system of a power device and a portable device for wireless charging of a battery of the portable device, which power device comprises a first antenna to emit a magnetic field and which portable device comprises a portable antenna exposed to the magnetic field and connected to a charge stage to rectify an antenna signal from the portable antenna and to provide a charge voltage (U) to charge the battery wherein the power device comprises a second antenna realized identical as the first antenna and arranged in a distance (L) to the first antenna and on the same coil axis (A) as the first antenna to generate a Helmholtz magnetic field and wherein a first power amplifier directly connected to the first antenna and a second power amplifier directly connected to the second antenna are realized identical and on the same substrate.",
  "title": "CHARGER WITH TWO COILS FOR WIRELESS CHARGING"
}