Hitachi, Ltd.

University of California

Olympus Corporation

Renesas Electronics Corporation

Renesas Technology Corp.

Olympus Medical Systems Corporation

Other

Hitachi Global Storage Technologies Netherlands B.v.

Hitachi Metals, Ltd.

Hitachi Chemical Company, Ltd.

Starting Industrial Co., Ltd.

Hiroshi Okabe

Ken Takei

Tatsuo Itoh

I-Hsiang Lin

Christophe Caloz

Eriko Takeda

Satoshi Tanaka

Takeaki Nakamura

Tomohisa Sakurai

Atsushi Isobe

Shinji Hatta

Kazuyuki Hori

Naomi Sekino

Hiroyuki Aoyama

Tsuruo Hatori

Koji Shimomura

Hiroo Ono

Hirozi Yamada

Hiroshi Kishida

Yoshitaka Imakado

Mikio Kuwahara

Hidetoshi Matsumoto

Naotaka Tanaka

Kenji Sekine

Eiji Murakami

Yoshitaka Hirata

Yu Hasegawa

Kazunori Yamamoto

Shinya Masuda

Osamu Kamimura

Yuji Shirai

Yasushi Shimada

Kazunori Taniguchi

Hiroyuki Kuriya

Yasuo Osone

Taro Miyazawa

Chiko Yorita

Kenya Kawano

Keiko Kikuchi

Kazuhisa Otsuka

Seiichi Tomoi

Masanori Yamaguchi

Yoshitaka Fujii

Masaru Imoto

Takehiko Nishimura

Koji Fukamachi

Toshimasa Kawamura

Tomonori Nomura

Hiroshi Ichihashi

High-frequency couplers and coupling techniques are described utilizing artificial composite right/left-handed transmission line (CRLH-TL). Three specific forms of couplers are described; (1) a coupled-line backward coupler is described with arbitrary tight/loose coupling and broad bandwidth; (2) a compact enhanced-bandwidth hybrid ring coupler is described with increased bandwidth and decreased size; and (3) a dual-band branch-line coupler that is not limited to a harmonic relation between the bands. These variations are preferably implemented in a microstrip fabrication process and may use lumped-element components. The couplers and coupling techniques are directed at increasing the utility while decreasing the size of high-frequency couplers, and are suitable for use with separate coupler or couplers integrated within integrated devices.

Composite right/left (CRLH) couplers

In a radio frequency circuit for multi-mode operation on which multiple transceivers complying with multiple communication systems are disposed, signal interference between circuits is reduced. The PA, and the output matching networksandof GSM system, which are circuits independent of the circuit operation of W-CDMA, are disposed in a section of the shortest distance between the PAthat handles RF transmission signals of W-CDMA being a first communication system, a third output matching network and an isolator, and a receiver that handles RF received signal of W-CDMA, and in a section of the shortest distance between the PAand the transmitterof W-CDMA. The PA, which is a circuit independent of the circuit operation of W-CDMA, is disposed in a section of the shortest distance between the PAand the inter stage filterof W-CDMA.

Radio frequency circuit for multi-mode operation

A directional coupler with a high coupling per unit area and small variations in characteristic at manufacturing capable of achieving a high directivity easily and an RF circuit module provided with the directional coupler are achieved. A main-line is provided on a front surface of a multi-layer substrate, a ground plane is provided on a back surface of the multi-layer substrate. On an inner layer immediately under the main-line, two lines in parallel with the main-line are provided, and one line is provided on a layer closer to the ground plane than the two lines. By connecting the two lines and the one line with vias, a sub-line with a shape of a winding of a loop is formed. In the sub-line, a main component of a vector vertically penetrating the loop is horizontal with respect to the ground plane.

Directional coupler and RF circuit module

A technique for realizing module size reduction while enhancing the anti-ESD characteristic of a low frequency band circuit without the need to add such an element as an ESD filter. In a diplexer included in a high-frequency power amplifier module, a composite grounding inductor with respect to an antenna terminal is formed of three inductors including a series inductor contained in a lowpass filter. Since an ESD signal contains main components thereof belonging to a frequency band of the order of a few hundreds of MHz or lower, the ESD signal is allowed to pass through a lowpass filter with little to no attenuation. Under this condition, a function for ESD filtering from the antenna terminal to an antenna switch circuit is provided by using the composite grounding inductor mentioned above and an electrostatic capacitor element, thereby suppressing passage of the ESD signal to the antenna switch circuit.

Branching filter, semiconductor integrated circuit device, and communication mobile terminal

An ultrasonic handpiece for use in operations comprises an oscillation source and a casing unit. The oscillation source has an ultrasonic transducer formed by plural piezoelectric layers layered one on another to form a substantially rod shape having both ends in an axial direction. A radially expanded flange is attached one end of the ultrasonic transducer. The casing unit has a cylindrical casing formed to contain the oscillation source therein, formed to have a blocking layer formed to have a predetermined length in, the axial direction, and positioned to cover both the flange and at least a first piezoelectric layer of the ultrasonic transducer in the axial direction. The casing unit also has a holder holding the oscillation source within the casing using the flange. The blocking layer is in charge of blocking (reducing or preventing) vibration and heat from being transmitted to the outer surface of the casing.

Ultrasonic-treatment handpiece with heat/vibration blocking structure and ultrasonic treatment apparatus using the handpiece

A surgical instrument has a first grasping member, a second grasping member which is provided to the first grasping member to open and close to the first grasping member, and grasps a living tissue between them, an ultrasonic coagulation-cutting unit which includes an ultrasonic vibrating portion provided in one of the first and second grasping members and connected to an ultrasonic transducer to generate ultrasonic vibration, and a pressing portion provided in the other of the first and second grasping members, and facing the ultrasonic vibrating portion, the pressing portion and the ultrasonic vibrating portion pressing the living tissue between them, and a high-frequency coagulation unit which includes a first electrode provided in the first grasping member, and a second electrode provided in the second grasping member, the first electrode and the second electrodes facing each other to coagulate the living tissue.

Surgical instrument

A starting system for a small-sized engine is described which achieves downsizing, light-weight, and cost reduction of the system, prevents entry of dust or foreign substances at the time of assembly, and achieves easy assembly of a motor. The starting system for a small-sized engine includes a recoil starting system and a motor starting system integrated in a starter case, in which the motor starting system has a configuration in which a pinion is mounted on an output shaft of a reducer motor by an one-way clutch of a needle bearing and the pinion is engaged with a starting gear 6 of an engine, and the starter case has a configuration in which an inner lid is secured to a crankcase of the engine together by a screw and the inner lid has a joint portion with respect to the crankcase and a mounting seat for the reducer motor on the outside thereof.

Starting system for small-sized engine

An ultrasonic lithotripter comprising a first transmission probe which has a hollow portion in the form of a through hole and transmits ultrasonic vibration and a superfine second transmission probe which can be passed through the hollow portion of the first transmission probe. An object of manipulation is held by means of the second transmission probe as it is manipulated by means of the first transmission probe.

Calculus manipulation apparatus

Composite right/left handed (CRLH) hybrid-ring couplers

Composite right/left handed (CRLH) branch-line couplers

Heating elements different in heat generating timing are laminated in a stacked state, and the heating element close to a wiring substrate is allowed to function as a heat diffusion plate for another heating element.

Semiconductor device

An endoscopic lithotripsy probe apparatus includes a probe, ultrasonic-vibration source, mechanical shock generation source, and switch-mechanism. The ultrasonic-vibration source is detachably attached to the probe to transmit an ultrasonic-vibration to the probe in a state in which the proximal end of the probe is connected to the ultrasonic-vibration source. The mechanical shock generation source, which is disposed on the side of the proximal end of the probe, applies a force to the ultrasonic-vibration source in a state in which the ultrasonic-vibration source is detached from the proximal end of the probe, and allows the ultrasonic-vibration source to collide with the proximal end of the probe so that a mechanical shock is applied to the probe. The switch-mechanism switches a state in which the ultrasonic-vibration from the ultrasonic-vibration source is transmitted to the probe and a state in which the mechanical shock from the mechanical shock generation source is transmitted.

Endoscopic lithotripsy apparatus and lithotripsy method of treatment object using the apparatus

An ultrasonic treatment switch device includes an adapter, a switch, a switch fixing portion and an adapter fixing portion. The adapter is connected to a power source and having a hand piece fixing portion detachably attached to a hand piece having an ultrasonic transducer. The switch is connected to the power source and causes an electric signal to be output from the power source so that the ultrasonic transducer generates ultrasonic vibrations. The switch fixing portion is provided in the switch and detachably attached to the adapter. The adapter fixing portion is provided in the adapter. The switch fixing portion is attached to the adapter fixing portion.

Ultrasonic treatment switch device and medical device switch attachment system

An RF circuit module, in which a power amplifier and a transceiver are united, with reduced interference between its electronic circuit blocks, downsized and still having high performance, and with a stable performance not dependent on the ground land structure on the motherboard, is provided. The ground planefor at least a last-stage amplifierof the power amplifierwhere the greatest power is generated in the whole RF circuit block, that is, the source of generating the greatest noise and heat for the RF circuit block, is isolated from the ground plane for at least one circuit portion of the transceiverincluding an LNA, receiver, transmitter, and VCO. These ground planes are connected to a common ground planethrough different connection conductors, respectively.

Radio frequency circuit module

Growing community of inventors

Tokyo, Japan

Hiroshi Okabe