Abstract: A display device includes a flat-panel display, a metal plate, and an antenna device. The flat-panel display portion is positioned on an upper surface of display device. The metal plate is positioned on the flat-panel display portion along an front edge of the upper surface. The antenna device for a wireless LAN is positioned on the upper surface of the flat-panel display portion.

Abstract: A high-frequency coupler used in communication of high frequency signals, which aims to provide a high-frequency coupler satisfying both constant communication quality and thinning. The high-frequency coupler includes a circuit board and a toroidal coil. The circuit board includes a first receiving passageway and a second receiving passageway. The toroidal coil extends through the first receiving passageway and the second receiving passageway between a first surface and a second surface of the circuit board. The toroidal coil orbits on both sides of the first surface and the second surface in a circular shape. The toroidal coil reverses an orbiting direction at a position substantially near a half of a length of the toroidal coil.

Abstract: An antenna having a ground plane having an edge and a first antenna element extending substantially parallel to the edge is disclosed. A ground element electrically connects the first antenna element with the ground plane. A second antenna element extends substantially parallel to the first antenna element and is disposed between the edge and the first antenna element and is connected at one end of the second antenna element to the first antenna element with the remaining end of the second antenna element located closer to the ground element. A third antenna element is disposed so that the first antenna element is between the second antenna element and the third antenna element and the third antenna element at extends substantially parallel to the first antenna element, with a rear end electrically connected with the first antenna element and a remaining end of the third antenna element is electrically open.

Abstract: An antenna having a ground plane having an edge and a first antenna element extending substantially parallel to the edge is disclosed. A ground element electrically connects the first antenna element with the ground plane. A second antenna element extends substantially parallel to the first antenna element and is disposed between the edge and the first antenna element and is connected at one end of the second antenna element to the first antenna element with the remaining end of the second antenna element located closer to the ground element. A third antenna element is disposed so that the first antenna element is between the second antenna element and the third antenna element and the third antenna element at extends substantially parallel to the first antenna element, with a rear end electrically connected with the first antenna element and a remaining end of the third antenna element is electrically open.

Abstract: A planar antenna includes a ground plane having a ground point. A main radiating element has a feeding point positioned adjacent to the ground point. The main radiating element is positioned adjacent to a contact side of the ground plane such that a space is formed there between. A parasitic element is positioned adjacent to the contact side such that a space is formed there between. The main radiating element has a shape such that the space between the main radiating element and the contact side becomes larger as the main radiating element becomes closer to the parasitic element and the parasitic element has a shape such that the space between the parasitic element and the contact side becomes larger as the parasitic element becomes closer to the main radiating element. Additionally, the parasitic element may have a slit formed therein.

Abstract: An electrical connector for cards is enabled to accommodate a plurality of types of card devices having different numbers of contact points. A housing is capable of receiving a first card, having conductive pads at predetermined positions, and a second card 250, having a plurality of conductive pads 252a, 252b at least one region that corresponds to the conductive pads of the first card. A plurality of contacts 36, 38, 46, 48, 56, and 58, for contacting the plurality of conductive pads 252a, 252b of the second card 250, are provided within the region that corresponds to the conductive pad of the first card.