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. 12, 2006
Filed:
Apr. 13, 2004
Yasuhiro Hibino, Ibi-gun, JP;
Hirokazu Kitamura, Ogaki, JP;
Ryuichi Kamimoto, Nisshin, JP;
Akira Ito, Gifu, JP;
Ichiro Koyama, Gifu, JP;
Katsuhiko Yusa, Mizuho, JP;
Yasuhiro Hibino, Ibi-gun, JP;
Hirokazu Kitamura, Ogaki, JP;
Ryuichi Kamimoto, Nisshin, JP;
Akira Ito, Gifu, JP;
Ichiro Koyama, Gifu, JP;
Katsuhiko Yusa, Mizuho, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A portable receiver includes an antenna to which at least FM broadcast wave is inputted, a matching circuit to which the signal input to the antenna is supplied via minute resistance component, an FM receiver unit with the output of the matching circuit connected thereto, and an earphone connected to the output of the FM receiver unit. The antenna is formed from rigid metal, and its length is shorter than the quarter wavelength of the FM broadcast wave. The matching circuit is formed by reactance element having fine DC resistance. The impedance value of the resistance component as viewed via the resistance component from the matching circuit is nearly equal to the impedance of the matching circuit.