US 2017/0229921 A1 · MAGNETIC RESONANCE WIRELESS POWER TRANSMISSION DEVICE CAPABLE OF ADJUSTING RESONANCE FREQUENCY

Abstract

A magnetic resonance wireless power transmission device capable of adjusting resonance frequency is disclosed. A wireless power transmission device according to an embodiment of the present invention comprises: a power amplifier for amplifying a wireless power signal using a driving frequency signal; a resonator for configuring a resonance tank and wirelessly transmitting, through magnetic resonance, the wireless power signal output from the power amplifier using a resonance frequency of the resonance tank; and a resonance control unit for controlling a duty ratio using a frequency applied to the resonator or a frequency signal generated by the resonator and adjusting the resonance frequency of the resonator.

Claims8

Dependent claims

A wireless power transmitting unit comprising:

a power amplifier configured to amplify a wireless power signal using a driving frequency signal;
a resonator configured to constitute a resonant tank and wirelessly transmit a wireless power signal output from the power amplifier through magnetic resonance using a resonant frequency of the resonant tank;
and
a resonance controller configured to tune the resonant frequency of the resonator by controlling a duty ratio with a frequency applied to the resonator or a frequency signal generated by the resonator.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

15/502,062Filed 31 Jul 2015

Priority

KR 10-2014-01013016 Aug 2014

Published

10 Aug 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

H02J 50/12
Using inductive coupling: of the resonant type
H03F 3/2173
Class D power amplifiers; Switching amplifiers: of the bridge type
H03F 3/3015
With asymmetrical driving of the end stage: using a common source driving stage, i.e. inverting stage
H03F 3/45475
Characterised by the way of implementation of the active amplifying circuit in the differential amplifier: using IC blocks as the active…

Magnetic resonance wireless power transmission device capable of adjusting resonance frequency

Life of this patent

Magnetic resonance wireless power transmission device capable of adjusting resonance frequency

Life of this patent

Abstract

Claims8