Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Yukinari Takahashi

Kenji Nishikawa

Shingo Sumi

Yasunori Komukai

Yu Ono

Toshiharu Ishimura

Kenichi Sato

Hiroshi Amano

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

An antenna unit includes a conductive ground plate, a first antenna element, and a second antenna element. The first antenna element includes a first end connected to a feedpoint and a second end containing an open end. A part of the first antenna element is disposed along the conductive ground plate. The second antenna element branches off the first antenna element at a branch point on the first antenna element. The second antenna element is disposed between the part of the first antenna element disposed along the conductive ground plate and the conductive ground plate. The first antenna element resonates at a first frequency. The second antenna element and a segment between the first end and the branch point of the first antenna element resonate at a second frequency that is higher than the first frequency.

A portable wireless unit having high antenna performance, which comprises: a first case having a first antenna element, a second antenna element and a second feeding section; a second case having a third antenna element, a third feeding section and a circuit board provided with a ground pattern; and a coupling section consisting of first and second electrically connected conductive coupling elements and coupling the first case and the second case to be extended and housed freely. The second coupling element is provided in the first case while being connected electrically with the first antenna element, the first coupling element is provided in the second case while being connected electrically with the first feeding section, and the first antenna element, the coupling section, and the ground pattern are operated as a dipole antenna.

Portable wireless unit

Growing community of inventors

Miyagi, Japan

Yukinari Takahashi