Panasonic Corporation

Akiyoshi Takeuchi

Yutaka Saito

Kouta Aoki

Yoshihiro Kanasaki

The present invention provides a folding type and portable wireless apparatus with a built-in antenna, particularly a portable wireless apparatus that reduces a local average SAR and improves performance of antenna. A housing open/close detecting unitdetects open/close of bodiesand. When the bodiesandare open, a first antennaand a wireless circuitare connected and resonant frequency of a second antennais adjusted into a first frequency bandwidth, and when the bodiesandare closed, the resonant frequency of the second antennais adjusted into the first frequency bandwidth and a second frequency bandwidth and a wireless circuitis connected. Therefore, when the bodiesandare open, it is possible to reduce a local average SAR by separating an antenna current. Further, when the bodiesandare closed, it is possible to obtain a high antenna gain.

Portable wireless apparatus

A portable wireless device is provided that eliminates the need for an antenna protruding from an housing by including a first housing and a second housing operating as a dipole antenna thus ensuring portability and delivering a high antenna performance despite its compact, low-profile and lightweight design. The portable wireless device according to the invention includes a first housing; a second housing; and a sliding unitfor slidably coupling the first housingand the second housingto each other; wherein the first housingis arranged a predetermined spacing apart from the second housingand includes a power feeding unitfor feeding power: between the first housingand the second housingand wherein the first housingand the second housingoperate as a dipole antenna. The portable wireless device does not include an antenna protruding from an housing. This ensures portability and delivers a high antenna performance despite its compact, low-profile and lightweight design.

Growing community of inventors

Ishikawa, Japan

Akiyoshi Takeuchi