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. 25, 2012
Filed:
Aug. 09, 2007
Kenya Nagano, Sendai, JP;
Yoshio Koyanagi, Yokohama, JP;
Kenya Nagano, Sendai, JP;
Yoshio Koyanagi, Yokohama, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A small antenna system which is incorporated in a portable radio apparatus and can ensure high antenna performance in a wide frequency band without impairing the design property or the operability and a portable radio apparatus are provided. An antenna device includes an antenna Ahaving a resonance characteristic in a first frequency; an antenna Ahaving a resonance characteristic in a second frequency and being spaced from the antenna Aat a predetermined distance; a circuit board P provided in a mobile telephone, a wireless sectionprovided on the circuit board P for supplying or receiving high-frequency power; and a high-frequency switchprovided on the circuit board P for selecting connection of an output terminal or an input terminal of the wireless sectionand a feeding point of the antenna Aor the antenna Aso that the feeding point of the antenna Aor the antenna Acan be switched and connecting to the wireless section