About 151 results
https://drivepatents.com/patents/1346327 · 22 Jun 2023
A local coil for percutaneous MRT-guided minimally invasive intervention is provided. The local coil has a central antenna coil having an opening for passing through an instrument. A first plurality of first peripheral antenna coils surround the central an...
https://drivepatents.com/patents/1340902 · 30 Mar 2023
Embodiments of this application disclose a wireless charging system. The wireless charging system includes a first electronic device, a wireless charging device, and a second electronic device. The wireless charging device is located between the first elec...
https://drivepatents.com/patents/1196423 · 7 Dec 2017
An electromagnetic resonant coupler includes an input line to which a transmission signal is input; a first resonance line connected to the input line; a second resonance line opposing the first resonance line, the second resonance line undergoing resonant...
https://drivepatents.com/patents/941951 · 15 Jun 2016
A position detection coil (14B) is disposed as a foreign matter detector that detects a state where a foreign matter is present on the upper surface of an installation plate (6). Further, the position detection coil (14B) and an alarm unit (43) that emits ...
https://drivepatents.com/patents/953650 · 17 Feb 2016
A wireless power transmission device comprises: a detection coil (L1) and a capacitor (C1) constituting a resonance circuit; and an oscillation circuit (21, 22) for exciting the detection coil with a high-frequency current. The oscillation circuit can gene...
https://drivepatents.com/patents/953630 · 17 Feb 2016
A wireless power transfer system including a plurality of power supply coils, and wirelessly performing power transfer from the power supply coils to a power receiver, includes an entire controller. The entire controller is configured to control the power ...
https://drivepatents.com/patents/953395 · 17 Feb 2016
Apparatus and methods for extracting wirelessly transmitted electrical power are described. A wireless electrical power receiver comprises a receiver resonator arranged to inductively generate an AC electrical current and a rectifier to receive and convert...
https://drivepatents.com/patents/947996 · 2 Dec 2015
A power transmission device includes an inverter, an oscillator, a foreign substance detector, and a power transmission control circuitry. The power transmission control circuitry causes the foreign substance detector to perform a series of multiple proces...
https://drivepatents.com/patents/948318 · 25 Nov 2015
A non-contact power transmitting and receiving system includes an inverter (1) configured to generate a high-frequency voltage, a voltage-current sensor (12) configured to detect a phase difference between an output voltage and an output current of the inv...
https://drivepatents.com/patents/957856 · 9 Sep 2015
There is provided a frequency controller apparatus for use in a wireless power transmitter apparatus configured to wirelessly transmit an inputted power from a power transmitting antenna that includes a first resonant circuit, toward a power receiving ante...