Fujitsu Corporation

Transphorm Japan, Inc.

Tadahiro Imada

Yoshihiro Nakata

Keiji Watanabe

Shirou Ozaki

Yasushi Kobayashi

Kouta Yoshikawa

Toshihiro Ohki

Tatsuya Hirose

Nobuhiro Imaizumi

Keishiro Okamoto

Masato Nishimori

Toshihide Kikkawa

Ei Yano

Atsushi Yamada

Yoichi Kawano

Kozo Shimizu

Katsusada Motoyoshi

Koji Nozaki

Kenji Imanishi

Norikazu Nakamura

Junichi Kon

Masahito Kanamura

Ikuo Soga

Toyoo Miyajima

Masayuki Takeda

Kazukiyo Joshin

Masayuki Hosoda

A microwave irradiation device includes a housing capable of accommodating an object to be heated; a plurality of microwave resonators installed around the housing; a microwave conductor coupling the plurality of microwave resonators; a microwave generator configured to generate microwaves having different frequencies; and a microwave measurement circuit coupled to the housing or the microwave conduction unit. Each of the microwave resonators resonates a microwave having a resonance frequency of the microwave resonator generated in the microwave generator and irradiates the object placed in the housing with the resonated microwave, and one microwave resonator among the plurality of microwave resonators and another microwave resonator have different resonance frequencies.

Microwave irradiation device, exhaust purification apparatus, automobile and management system

A fine particle detector includes: a casing part configured to accommodate an object to be heated; an electromagnetic wave generating part configured to generate electromagnetic waves of different frequencies; at least one power sensor configured to measure powers, from the casing part, of the electromagnetic waves that have entered into the casing part; and a fine particle detection controlling part configured to determine, based on the powers of the electromagnetic waves of the different frequencies measured by the at least one power sensor, whether an accumulated amount of fine particles accumulated in the object to be heated is greater than or equal to a predetermined accumulated amount.

Fine particle detector and exhaust gas purification apparatus

An exhaust purification device includes: an exhaust pipe configured to discharge exhaust gas from an internal combustion engine; a filter provided in the exhaust pipe and configured to collect a particulate matter contained in the exhaust gas; a plurality of electrodes configured to apply electric fields to a plurality of regions of the filter, respectively; and a power supply configured to apply at least two AC signals mutually different in phase to the plurality of electrodes.

Exhaust purification device and vehicle

A microwave irradiation apparatus includes: an annular microwave transmission path; a first microwave generation circuit that is coupled with the microwave transmission path and generates a first microwave; and a second microwave generation circuit that is coupled with the microwave transmission path and generates a second microwave; wherein the first microwave and the second microwave have frequencies equal to each other but have phases different from each other.

Microwave irradiation apparatus and exhaust gas purification apparatus

There is provided an exhaust purification device including a particulate filter configured to collect particulates contained in an exhaust gas, an oxidation catalyst disposed in a front stage of the particulate filter and configured to have a carrier partially or entirely made of a material which absorbs a microwave, a housing in which the particulate filter and the oxidation catalyst are arranged, and a microwave generator configured to generate a microwave to be irradiated onto the oxidation catalyst in a direction to which the exhaust gas flows.

Exhaust purification device, internal combustion device, and power generation device

A disclosed microwave heating apparatus includes a casing part configured to accommodate an object to be heated; a microwave generator configured to generate a microwave; an electromagnetic wave generator configured to generate an electromagnetic wave whose frequency is different from that of the microwave; an electromagnetic wave sensor configured to measure power of the electromagnetic wave, the power of the electromagnetic wave being measured after the electromagnetic wave incident on the casing part from the electromagnetic wave generator has passed through the object to be heated; and a controller configured to control, based on the power measured in the electromagnetic wave sensor, the microwave generator to generate the microwave.

Microwave heating apparatus and exhaust gas purification apparatus

A filter regeneration device includes a microwave radiator configured to radiate a microwave and disposed to be oriented in a direction toward a ceramic filter configured to purify exhaust gas of an internal combustion engine, the ceramic filter being disposed in a cylindrical portion of a metallic case having the cylindrical portion and having a protruding portion protruding toward an outside of the cylindrical portion of the metallic case, the microwave radiator being disposed inside the protruding portion, and a microwave generator configured to generate the microwave radiated from the microwave radiator toward the ceramic filter.

Filter regeneration device, filter plugging detection device, exhaust gas treatment apparatus, and filter plugging determination method

A transistor which includes an electron transit layer and an electron supply layer which are stacked in a thickness direction of a substrate; an electron transit layer formed over the substrate in parallel to the electron transit layer and the electron supply layer; an anode electrode which forms a Schottky junction with the electron transit layer; and a cathode electrode which forms an ohmic junction with the electron transit layer are provided. The anode electrode is connected to a source of the transistor, and the cathode electrode is connected to a drain of the transistor.

Semiconductor device which comprises transistor and diode

A microwave applicator includes a housing configured to contain an object of heating, multiple microwave resonators provided on and around a periphery of the housing, a microwave conductor interconnecting the microwave resonators, and a microwave generator configured to generate microwaves of different frequencies. Each microwave resonator is configured to resonate the generated microwaves of a resonant frequency of the microwave resonator, and to emit the resonated microwaves to the object of heating contained in the housing. Among the microwave resonators, a first microwave resonator and a second microwave resonator have respective resonant frequencies that are different from each other.

Microwave applicator, exhaust gas purifier, heater, and chemical reactor

A power amplifier includes a main amplifier, an auxiliary amplifier, and a control circuit. The main amplifier is configured to amplify input power, and the auxiliary amplifier is configured to amplify the input power when the input power exceeds a certain level. The control circuit, which is provided between a source of the main amplifier and a ground, is configured to control a source potential of the main amplifier so as to increase the source potential when the input power reaches at least a certain value.

Power amplifier, semiconductor integrated circuit, and method of controlling the power amplifier

A particulate filter includes a particulate capturing body configured to capture particulates contained in exhaust gas, and a dielectric waveguide provided around the particulate capturing body. The effective relative permittivity of the dielectric waveguide is higher than the effective relative permittivity of the particulate capturing body.

Particulate filter and exhaust gas purifier

The present application aims at restraining an erroneous input to an input apparatus fitted to a hand for use. The input apparatus includes a touch input accepting circuit to be attached to at least any one of five fingers of a hand, and an input cancelling circuit to cancel an input to the input accepting circuit upon touching the input accepting circuit, the input cancelling circuit being attached to a finger neighboring to the finger, with the input accepting circuit attached, of the five fingers.

Input apparatus including input cancelling circuit

A power supply circuit includes a switching element and a control section. The control section converts back electromotive force generated at the time of the operation of the switching element to optical energy and converts the optical energy to an electrical signal. Furthermore, the control section drives the switching element on the basis of the electrical signal obtained by converting the optical energy. Accordingly, unlike a case where surge energy is regenerated by resonance, there is no need to use a resonant element such as an inductor. As a result, circuit scale is reduced.

Power supply circuit and power factor correction circuit

A semiconductor device includes a first semiconductor layer formed over a substrate, a second semiconductor layer formed over the first semiconductor layer, a source electrode and a drain electrode formed over the second semiconductor layer, an insulating film formed over the second semiconductor layer, a gate electrode formed over the insulating film, and a protection film covering the insulating film, the protection film being formed by thermal CVD, thermal ALD, or vacuum vapor deposition.

Semiconductor device

A semiconductor device includes a first semiconductor layer of a first conductivity type formed on one side of a semiconductor substrate; a second semiconductor layer of a second conductivity type formed on the first semiconductor layer; a third semiconductor layer of the first conductivity type formed on the second semiconductor layer; an opening part formed by removing part of the first to third semiconductor layers; a gate insulating film formed so as to cover an inner wall of the opening part; a gate electrode formed inside the opening part via the gate insulating film; a source electrode formed on a surface of the third semiconductor layer; a drain electrode connected to a part corresponding to the gate electrode on another side of the semiconductor substrate; and a fourth electrode formed on the another side of the semiconductor substrate at a part corresponding to the source electrode.

Growing community of inventors

Kawasaki, Japan

Tadahiro Imada