Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Shingo Sumi

Kenji Nishikawa

Yu Ono

Toshiharu Ishimura

Yasunori Komukai

Yukinari Takahashi

Hiroaki Ohmori

Yoshio Koyanagi

Yutaka Saito

Hiroyuki Uejima

Hiroyuki Sasaki

Akira Kanazawa

Hironori Kikuchi

Haruhiko Kakitsu

Kazuya Tani

Kenya Nagano

Takahiro Ochi

Masashi Koshi

Yukari Yamazaki

Hideki Hayama

Katsuhiko Morioka

Masayuki Obata

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 multiband compatible antenna that resonates at a first frequency and a second frequency includes: a planar conductor including a feeding portion to which a signal is supplied, a grounding portion, and a slit between the feeding portion and grounding portion. The slit includes a first slit portion extending in a first direction and a second slit portion extending in a second direction intersecting the first direction from an end of the first slit portion. The first slit portion is disposed closer to one edge than a center of the planar conductor in the second direction, and the feeding portion is disposed to a side of the first slit portion closer to the one edge. The planar conductor includes a first element portion and a second frequency portion that resonate at the first frequency and the second frequency, respectively. The second slit portion is disposed in the first element portion.

Multiband compatible antenna and radio communication device

An antenna includes a dielectric substrate, a ground element, a feed element, a microstrip line, and a feed point. The ground element is disposed on a first surface of the dielectric substrate. The ground element includes a slit. The feed element is disposed on a second surface of the dielectric substrate. The microstrip line extends from the feed element toward the slit. The feed point is disposed on the second surface of the dielectric substrate, and connected to the feed element via the microstrip line. The feed point is positioned between the feed element and the slit, and disposed at an end of the microstrip line.

Antenna

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 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.

There is adopted an enclosure dipole antenna structure including antenna elements respectively provided in a lower enclosure and an upper enclosure. There is also adopted a structure in which the lower structure and the upper structure are rotatably joined together along two axes of hinges. The enclosures thereby become openable and closable in two directions including a vertical direction and a horizontal direction. There can be implemented high antenna performance without use of an external antenna even regardless of whether the enclosures are opened in the vertical direction or the horizontal direction. A feeding section and a connection section are separated from each other by a distance of 1/20 or more of a wavelength corresponding to an operating frequency. Power can well be fed to the antenna elements.

Portable radio device

The objective of the present invention is to provide a connection cable that serves as an external antenna for a radio apparatus, and whose antenna performance is not deteriorated in the use state by an adverse affect attributable to the near proximity of a human body. According to the present invention, an antenna device, integrally formed with first connection means, which is to be connected to a radio apparatus, second connection means, which is to be connected to a peripheral device, and a connection cable and an antenna element, which are located in between and which transmit a plurality of signals from the radio apparatus to the peripheral device, includes: first relay means, located at a middle position in the connection cable, for relaying the plurality of signals; the antenna element, located between the second connection means and the first relay means; and a coaxial line, located between the first connection means and the first relay means for transmitting, to the radio apparatus, an antenna reception signal that has been received at the antenna element and has been extracted by the first relay means, wherein the antenna element serves as an external antenna for the radio apparatus.

Antenna device with integrated connection cable, and radio apparatus

Growing community of inventors

Miyagi, Japan

Shingo Sumi