The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2025
Filed:
Feb. 04, 2022
Kake Educational Institution, Okayama, JP;
Adtex Inc., Gunma, JP;
Hiroki Ishida, Okayama, JP;
KAKE EDUCATIONAL INSTITUTION, Okayama, JP;
ADTEX INC., Gunma, JP;
Abstract
[PROBLEM] To provide a magnetic resonance wireless power transfer device which allows constant transmission power and high transmission efficiency to be maintained over a long transmission distance even when the distance (transmission distance) between a transmitter coil and a receiver coil changes. [SOLUTION] In a magnetic resonance wireless power transfer device wherein a negative resistance circuit, a transmitter resonant circuithaving a transmitter coil, and a receiver resonant circuithaving a receiver coilare configured so that the parity-time symmetry is preserved, out of two resonant loops (Loop I and Loop II) in which a resonant current is circulatable when the transmitter resonant circuitand the receiver resonant circuitare regarded as a double resonant circuit coupled with a mutual inductance, Q value of the Loop II is set to be higher than Q value of the Loop I, so that oscillation occurs in the Loop II in which a leakage inductance component of the coil and a capacitance component of a capacitor resonate.