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. 13, 2016
Filed:
Sep. 04, 2012
Masami Suzuki, Kawasaki, JP;
Masami Suzuki, Kawasaki, JP;
PIONEER CORPORATION, Kanagawa, JP;
Abstract
A impedance matching apparatus () is provided with: a matching circuit () having a plurality of variable reactance elements; an incident signal/reflected signal extracting circuit () configured to extract an incident signal and a reflected signal; an estimating device () configured to estimate input impedance of a transmitting antenna () on the basis of the extracted incident signal and the extracted reflected signal; and a setting device () configured to set a value associated with one part of the plurality of variable reactance elements such that output impedance of a power supply () theoretically matches the input impedance on the basis of the estimated input impedance, and then adjust a value associated with at least one of the plurality of variable reactance elements according to the extracted reflected signal.