Kyocera Corporation

Takanori Ikuta

Akinori Sato

Wataru Koga

Nobuki Hiramatsu

Sunao Hashimoto

Kazuo Watada

Yuuko Yokota

Shunichi Murakawa

Yasuhiko Fukuoka

Hiroshi Uchimura

Susumu Kashiwase

Jun Kitakado

Kenji Kitazawa

Kiyohiro Iioka

Katsuro Nakamata

Shinji Isoyama

Masayuki Funami

Masato Fujishiro

Hiromichi Yoshikawa

Hiroyuki Tanaka

Tetsuya Kishino

Takahiro Saiwai

Kenji Yamamoto

Atsuhisa Inakoshi

Motoki Ito

Kyohei Kobayashi

Takeshi Takenoshita

Yoshifumi Yamagata

Junya Nishii

Michiaki Nishimura

Masamichi Yonehara

Masahisa Shimozono

Daisuke Makibuchi

Takahisa Yamamoto

Yasutaka Ohashi

Toi Kanda

Djuniadi Arifin Sagala

Yusuke Morimoto

Hiroshi Yamasaki

Masaki Nambu

Takuya Kuribayashi

Hiroki Kan

A wireless communication device includes an antenna and is used for storage as an electrical conductive body. The antenna includes a first conductor and a second conductor, one or more third conductors, a fourth conductor, and a feeding line. The first conductor and the second conductor face each other in a first axis. The one or more third conductors are located between the first conductor and the second conductor and extend in the first axis. The fourth conductor is connected to the first conductor and the second conductor and extends in the first axis. The feeding line is connected to any one of the third conductors. The first conductor and the second conductor are capacitively coupled to each other via the third conductor. The fourth conductor faces a conductor part of the storage.

Wireless communication device, automatic door, and automatic door system

A wireless communication system includes a first wireless communication device installed on an installation surface of a vehicle and a second wireless communication device. The first wireless communication device includes an antenna and a sensor. The antenna includes a first conductor, a second conductor, one or more third conductors, a fourth conductor, and a feeding line. The first wireless communication device transmits a signal from the antenna to the second wireless communication device, based on information detected by the sensor.

Antenna, wireless communication device, wireless communication system, vehicle, motorcycle, and movable body

An information processing apparatus includes a communication interface and a controller. The communication interface receives, from a sensor container, information indicating an orientation of the sensor container. The controller, based on the information indicating the orientation of the sensor container, calculates a calculated value indicating a remaining amount of contents of the sensor container. The controller determines an estimated value of the remaining amount on the basis of the calculated value. The communication interface transmits the estimated value indicating the remaining amount to an external device. When the calculated value indicating the remaining amount decreases by a first predetermined value or more within a predetermined time period, the controller does not perform the determination of the estimated value on the basis of the calculated value.

Information processing apparatus, information presentation apparatus, information presentation system, and recording medium

An electronic component has a mounting board, a bump located on a mounting surface of the mounting board, a SAW device located on the bump and connected to the bump. The SAW device has an element substrate, an excitation electrode located on the first primary surface of the element substrate, a pad located on the first primary surface and connected to the excitation electrode, and a cover located above the excitation electrode and formed with a pad exposure portion on the pad. Further, the SAW device makes the top surface of the cover face the mounting surface, makes the bump be located in the pad exposure portion, and makes the pad abut against the bump.

Electronic component and acoustic wave device

A SAW element has a substrate; an IDT electrode located on an upper surface of the substrate and comprises Al or an alloy containing Al; a first film located on an upper surface of the IDT electrode; and a protective layer which covers the IDT electrode provided with the first film and the portion of the substrate exposed from the IDT electrode, which has a thickness from the upper surface of the substrate larger than a total thickness of the IDT electrode and first film, and which contains a silicon oxide. The first film contains a material which has a larger acoustic impedance than the material (Al or the alloy containing Al) of the IDT electrode and the silicon oxide and which has a slower propagation velocity of an acoustic wave than the material of the IDT electrode and the silicon oxide.

Acoustic wave element and acoustic wave device using same

Provided is a demultiplexer capable of improving attenuation characteristic and isolation characteristic of a filter having a lower transmission frequency band among two filters having different transmission frequency bands, outside the transmission frequency band of a high-frequency side. A communication device using the demultiplexer is also disclosed. A first spiral wiring portion () and a sixth wiring portion () are formed so that an angle defined by a direction of a part (L) of the first spiral wiring portion () and a direction of a part (L) of the sixth spiral wiring portion () on a predetermined virtual plane is, for example, 0 degree and the direction of the current flowing in the part (L) of the first spiral wiring portion () is opposite to the direction of the current flowing in the part (L) if the sixth wiring portion ().

Duplexer and communication device

Terminal electrodesfor carrying a high frequency deviceare formed on a surface of a circuit board having its reverse surface covered with a reverse surface conductor layer, and a plurality of signal linesfor exchanging a signal between the high frequency deviceand an external circuit are formed thereon. The terminal electrodeis arranged at the center of the circuit board, and the signal linesradially extends from the terminal electrode. Electromagnetic interference between the signal linescan be reduced, so that out-of-band attenuation characteristics and isolation characteristics can be satisfactorily exhibited in a case where the high frequency deviceis a duplexer.

High frequency device mounting substrate and communications apparatus

An IDT electrodeand an electrode padare formed on one principal face of a piezoelectric substrateand a circular electrodeis formed so as to surround these components. The circular electrodeis connected to a radiating conductorformed on a bottom face of a circuit boardthrough a via conductorformed within the circuit board. Thus, since heat generated in the IDT electrodeis easy to be released to the outside through the circular electrode, the via conductorand the radiating conductor, adverse effects due to the heat can be prevented, thereby improving high power durability.

Surface acoustic wave apparatus and communications equipment

A conductor layeris provided so as to prevent pyroelectric destruction occurring in the steps of manufacturing a surface acoustic wave elementon the other surface opposite to an IDT electrode formation surface of a piezoelectric substrate. At this time, the conductor layeris formed, except for a regionopposed to an input electrode sectionin a filter regionand/or a regionopposed to an output electrode section. This allows a coupling amount between the input electrode sectionand the output electrode sectiondue to a parasitic capacitance formed between the input electrode sectionand the output electrode sectionin the filter regionto be reduced, thereby allowing the out-of-band attenuation characteristics of a surface acoustic wave device to be improved.

Surface acoustic wave device, manufacturing method therefor, and communications equipment

In a surface acoustic wave device according to the present invention, a transmitting filter element TX and a receiving filter element RX are formed on one main surface of a piezoelectric substrate, and are mounted by face down on an upper surface of a circuit board. A ground electrodein the receiving filter element RX is connected to three linear via conductors' formed on the circuit board, and a ground electrodein the transmitting filter element TX is connected to a crank-shaped via conductor&#x2032; formed on the circuit board

Surface acoustic wave device and communication apparatus

A directivity controllable array antenna with a variable phase shifter is provided which is stable and has a small waveform and intermodulation distortion, excellent high power handling capability and low-loss. In an array antenna with a variable phase shifter, the variable phase shifter has a transmission line, and a variable capacitance capacitor is connected to a terminal of a ground side of the transmission line. In the variable capacitance capacitor, a plurality of variable capacitance elements each using a thin film dielectric layer whose dielectric constant changes in accordance with an applied voltage are connected between an input terminal and an output terminal, in parallel to each other with respect to direct current component and in series with each other with respect to high frequency component.

Array antenna and radio communication apparatus using the same

An antenna is constituted in which a variable capacitance capacitor portion Ct is connected between an antenna element and a ground. In the variable capacitance capacitor, a plurality of variable capacitance elements using a thin film dielectric layer whose dielectric constant is changed by a voltage applied are connected in parallel with regard to direct current component and in series with regard to high frequency component between an antenna-element-side terminal and a ground-side terminal. The capacitance change ratio of the variable capacitance capacitor that depends on the bias signal can be utilized to the maximum so as to perform impedance matching so that the electrical length of the antenna element is changed, and thus, the operating frequency can be changed. In addition, the antenna having small waveform distortion and intermodulation distortion, high power handling capability and low loss at high frequencies can be realized.

Antenna using variable capacitance element and wireless communication apparatus using the same

An antenna is structured in a manner that a rectangular radiation electrode, a ground electrode opposed in parallel to a long side and a short side adjacent to each other of the radiation electrode, respectively, and a feeder electrode connected to the long side of the radiation electrode are formed on a substrate. A portion opposed to the long side of the ground electrode has a length not more than the long side and a width equal to or less than a length of the short side, and a portion opposed to the short side of the ground electrode has a length more than the short side and a width equal to or more than a length of the long side.

Antenna, antenna module and radio communication apparatus provided with the same

The surface mounting type antenna includes a rectangular parallelepiped base body, a group of radiation electrodes and a feeder terminal. The group of radiation electrodes includes radiation electrodes formed on a first pair of side faces so as to extend from one end face side to another end face side thereof, and a radiation electrode formed on the one end face side of one side face of a second pair of side faces, the radiation electrode being connected to the radiation electrodes formed on the first pair of side faces. The feeder terminal is formed on a part of another side face of the first pair of side faces, the part being in a vicinity of another side face of the second pair of side faces, the feeder terminal being connected to the group of radiation electrodes.

Surface mounting type antenna, antenna apparatus and radio communication apparatus

An surface-mount type antenna includes a rectangular parallelepiped base body, a feeding terminal formed at one-end-side part of one side surface thereof, and a radiating electrode, to one end of which is connected the feeding terminal, disposed such that its other end is routed from one-end-side part of one side surface, through one-end-side part of one principal surface, to another-end-side part of one principal surface, and extends from the other-end-side part to the one end side part parallelly with a ridge of the base body, and is eventually formed into an open end. An antenna apparatus is constructed by mounting the surface-mount type antenna on a mounting substrate having a feeding electrode and a ground conductor layer with a linear side edge located near the feeding electrode, with the ridge of the base body arranged parallel to the linear side edge of the ground conductor layer.

Growing community of inventors

Kyoto, Japan

Takanori Ikuta