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:
Jun. 22, 2004
Filed:
Jan. 15, 2003
Tadashi Oshiyama, Gunma, JP;
Seiji Gou, Gunma, JP;
Yokowo Co., Ltd., Tokyo, JP;
Abstract
A first antenna is movable between a first position pulled out from the communication terminal and a second position accommodated in a mobile communication terminal. A second antenna is built in the communication terminal. A first switch electrically connects only the first antenna with a power feeding circuit via an impedance matching circuit when the first antenna is placed at the first position, and electrically connects only the second antenna with the power feeding circuit when the first antenna is placed at the second position. A second switch grounds the second antenna in cooperation with the first switch, when the first antenna is placed at the second position.