Other

Kabushiki Kaisha Toshiba

Fuji Xerox Co., Ltd.

Renesas Electronics Corporation

Kyocera Corporation

Fujikura Limited

Ibiden Company Limited

Fujitsu Microelectronics Limited

Chihiro Ueda

Yutaka Akiyama

Tamotsu Usami

Kouichi Yoshida

Yukihiro Hirai

Kanji Otsuka

Osamu Koyasu

An antenna apparatus utilizing an aperture of transmission line, which is connected to a first transmission line having a predetermined characteristic impedance, includes a tapered line portion, and an aperture portion. The tapered line portion is connected to one end of the transmission line, and the tapered line portion includes a second transmission line including a pair of line conductors. The tapered line portion keeps a predetermined characteristic impedance constant and expands at least one of a width of the transmission line and an interval in a tapered shape at a predetermined taper angle. The aperture portion has a radiation aperture connected to one end of the tapered line portion. A size of one side of the aperture end plane of the aperture portion is set to be equal to or higher than a quarter wavelength of the minimum operating frequency of the antenna apparatus.

Antenna apparatus utilizing aperture of transmission line

A differential signal transmission cable structure for transmitting differential signals having GHz frequency band in the present invention is provided with a differential signal transmission pair cableconnecting a driver circuitand a receiver circuit, for transmitting differential signals having GHz frequency band, and a power supply ground transmission pair cableconnecting ground and a first power supplyconnected to the driver circuit and ground and a second power supplyconnected to the receiver circuit. Further characteristic impedance of the differential signal transmission pair cable is matched to that of the driver circuit and the receiver circuit, thereby enabling TEM waves of differential signals having GHz frequency band transmission mode to be maintained when the differential signals are transmitted.

Transmission cable structure for GHz frequency band signals and connector used for transmission of GHz frequency band signals

A spiral contactor for establishing an electric connection with a semiconductor device or an electronic part including a solder ball includes a spiral probe having a spiral shape, as viewed from the top. The spiral probe is embedded in an insulating substrate in a manner that permits resilient deformation thereof in accordance with a shape of the solder ball. An edge of the spiral probe is pressed to engage the solder ball, and slides along a periphery of the solder ball, thereby cutting an oxide membrane thereon. The spiral contactor may be manufactured by combination of the photolithography technique and the plating process, and used for a semiconductor inspecting apparatus and an electronic part.

Method for manufacturing spiral contactor

A spiral contactor for establishing an electric connection with a semiconductor device or an electronic part including a solder ball includes a spiral probe having a spiral shape as viewed from a top thereof. The spiral probe is embedded in an insulating substrate in a manner that permits resilient deformation thereof in accordance with a shape of the solder ball, and an edge of the spiral probe is pressed to engage into the solder ball and slides along a periphery of the solder ball, thereby cutting oxide membrane thereon. The spiral contactor may be manufactured by combination of the photolithography technique and the plating process, and used for a semiconductor inspecting apparatus and an electronic part.

Spiral contactor, semiconductor device inspecting apparatus and electronic part using same, and method of manufacturing the same

Growing community of inventors

Tokyo, Japan

Chihiro Ueda