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:
Mar. 10, 2026
Filed:
Feb. 14, 2024
Casio Computer Co., Ltd., Tokyo, JP;
CASIO COMPUTER CO., LTD., Tokyo, JP;
Abstract
An adjustment method for an antenna device including an antenna, an adjustment circuit including first and second circuits connected in series with the antenna and a communication circuit connected with the adjustment circuit includes: determining constants of the first circuit such that at two frequencies, values of first resistance of first impedance as viewed from an output end of the first circuit toward the antenna each are equal to resistance of target impedance, and absolute values of first reactance of the first impedance are different from one another; and determining constants of the second circuit such that at the frequencies, while values of second resistance of second impedance as viewed from an output end of the adjustment circuit toward the antenna are kept at the values of the first resistance, values of second reactance of the second impedance each are a complex conjugate with reactance of the target impedance.