Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Toshiharu Ishimura

Kenji Nishikawa

Shingo Sumi

Yasunori Komukai

Yukinari Takahashi

Yu Ono

Masato Murakata

Kazuya Tani

Kazuya Nakano

Hiroaki Ohmori

Tomohiro Uchida

Kazuhiro Oota

An antenna unit includes a plate-shaped dielectric substrate, as well as an antenna element and a stub element. The dielectric substrate has a first edge extending along a longitudinal direction of the dielectric substrate and a second edge extending along the longitudinal direction of the dielectric substrate, and the second edge is opposite to the first edge. The antenna element is disposed along the longitudinal direction of the dielectric substrate. The Antenna element has a first end containing a feedpoint and a second end containing an open end. The stub element is disposed between a section of the antenna element having a predetermined length containing the first end of the antenna element and the first edge of the dielectric substrate along the longitudinal direction of the dielectric substrate. The stub element has a first end connected to a reference potential and a second end containing an open end.

Antenna unit and electronic device

A first antenna element includes a first end connected to a feedpoint, a second end connected to a connection point on a ground conductor, and a fold disposed between the first and the second ends. A part of a segment between the first end and the fold of the first antenna element is disposed along the ground conductor. A second antenna element branches off the first antenna element. The second antenna element is disposed between the part of the first antenna element disposed along the ground conductor and the ground conductor. The segment between the first end and the fold of the first antenna element resonates at a first frequency. The second antenna element and a segment between the first end and a branch point of the first antenna element resonate at a second frequency that is higher than the first frequency.

Tablet PC () includes communication units (), antenna terminal (T) used to receive one of first and second signals, antenna terminal (T) used to receive another one of the first and second signals, terminal switch () configured to perform switching between a first coupling state in which communication unit () and terminal (T) are coupled, and communication unit () and terminal (T) are coupled, and a second coupling state in which communication unit () and terminal (T) are coupled, and communication unit () and terminal (T) are coupled, and controller () configured to control terminal switch () so as to switch to the first coupling state when terminal (T) receives the first signal, and terminal (T) receives the second signal, and to control terminal switch () so as to switch to the second coupling state when terminal (T) receives the second signal, and terminal (T) receives the first signal.

Radio communication device and radio communication system

A first base radiation element has a first end connected to the feed point, and a second end. A second base radiation element has a first end connected to the ground point, and a second end. The first and second base radiation elements respectively include portions extending in a first direction and close to each other. The first base radiation element is branched into first and second branch radiation elements at a first branch point located at the second end of the first base radiation element, the first branch radiation element includes a portion extending in the first direction, and the second branch radiation element includes a portion extending in a second direction opposite to the first direction. The end of the second base radiation element is connected to a connecting point different from the first branch point of the first branch radiation element.

Small antenna apparatus operable in multiple frequency bands

The display device includes: a panel modulethat includes a display paneland a driving circuit for driving the display panel; a metallic front housingthat partially covers the panel modulefrom a display surface side of the display panel; and a metallic back housingthat covers the panel modulefrom a back surface side of the display panel. A conductive clothis disposed between the panel module, and the front housingand the back housing, the conductive clothcontinuously covering a circumferential edge portion of the panel moduleon the display surface side, a side surface portion of the panel moduleand a circumferential edge portion of the panel moduleon the back surface side and being connected electrically to the front housingand the back housing

Growing community of inventors

Osaka, Japan

Toshiharu Ishimura