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:
Dec. 17, 2013
Filed:
Sep. 15, 2008
Hideo Kikuchi, Kanagawa, JP;
Hideo Kikuchi, Kanagawa, JP;
Other;
Abstract
To provide an induced power transmission circuit that transmits, from a transmission antenna () connected to a power supply circuit, an AC power having an angular frequency ω to a spaced reception antenna () with an excellent efficiency, thereby transmitting it to a load circuit. The induced power transmission circuit comprises a circuit the two ends of which are coupled by a capacitor (C) and in which the power supply circuit is connected in series to a midway port () (P) of the transmission antenna () having an effective self-inductance L; and a circuit the two ends of which are coupled by a capacitor (C) and in which the load circuit is connected in series to a midway port () (P) of the reception antenna () having an effective self-inductance L; wherein for a coupling coefficient k of the electromagnetic induction between the antennas and for a phase angle β having an arbitrary value, the angular frequency ω is set to the square root of the reciprocal of a value of L×C×(1+k*cos(β)), the output impedance of the power supply circuit is set to approximately kωL*sin(β), and the input impedance of the load circuit is set to approximately kωL*sin(β). There is also provided an impedance converting circuit that converts the circuit impedances.