Kyocera Corporation

Shinji Isoyama

Katsuro Nakamata

Hiromichi Yoshikawa

Nobuki Hiramatsu

Hiroshi Uchimura

Sunao Hashimoto

Takanori Ikuta

Jun Kitakado

Yasuhiko Fukuoka

Masamichi Yonehara

Hiroshi Yamasaki

Masato Fujishiro

Susumu Kashiwase

Teruyuki Shimura

Takahiro Saiwai

Atsuhisa Inakoshi

Hiroshi Ninomiya

Nobuyoshi Fujikawa

Tooru Takahashi

Masafumi Horiuchi

Kouichi Maruta

Takahisa Yamamoto

Toshio Okuda

Djuniadi Arifin Sagala

Toi Kanda

Katsurou Nakamata

Takuya Kuribayashi

Shinjiro Shimo

Hirofumi Toda

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

An antenna is installed on an installation surface of a wheel. The antenna includes a first conductor, 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 electromagnetically connected to the third conductor. The first conductor and the second conductor are capacitively connected via the third conductor. A surface of the fourth conductor faces the installation surface of the wheel in a second axis perpendicular to the first axis.

Antenna, wireless communication device, wheel, tire pressure monitoring system, and vehicle

ABSTRACT One example of embodiments of the present disclosure includes a structure. The structure includes first pair conductors and at least one unit structure. The first pair conductors are separated from each other in a first direction. The unit structure is positioned between the first pair conductors. The unit structure includes a second conductor and a third conductor. The unit structure includes at least one unit resonator. The third conductor extends in an xy plane including an x direction. The third conductor is electrically connected to the first pair conductors. The third conductor is configured as a reference potential of the structure. The unit resonator overlaps with the third conductor in a z direction intersecting with the xy plane. The unit resonator is configured to uses the third conductor as the reference potential.

Structure, antenna, wireless communication module, and wireless communication device

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

A communication device including a signal generator configured to generate a transmitting signal that uses a plurality of frequency bands, an amplifier configured to amplify and output the transmitting signal, a plurality of duplexers configured to separate and output a receiving signal and the transmitting signal, and a controller. The controller is configured to control power amplification of the transmitting signal by the amplifier based on the transmitting signal output from the duplexer, and control power amplification of the transmitting signal by the amplifier based on the transmitting signal input to the duplexer from the amplifier when a temperature is a predetermined value or more or the frequency of the transmitting signal is a predetermined value or more.

Communication device

A diplexer that can demultiplex and multiplex two signals having wide frequency bands, and a wireless communication module and a wireless communication apparatus using the same, are provided. A diplexer has a multilayer body including a first interlayer, a second interlayer and a third interlayer. On the first interlayer, first resonant electrodes are disposed in an interdigital form. On the second interlayer, a plurality of second resonant electrodes are disposed in an interdigital form. On the third interlayer, there are disposed an input coupling electrode that faces the input-stage first resonant electrode and the input-stage second resonant electrode in an interdigital form, a first output coupling electrode that faces the output-stage first resonant electrode in an interdigital form, and a second output coupling electrode that faces the output-stage second resonant electrode.

Diplexer, and wireless communication module and wireless communication apparatus using the same

An ultra-wideband bandpass filter having two adequately-wide pass bands, and a wireless communication module and a wireless communication apparatus which employ the bandpass filter are provided. In a bandpass filter, first resonant electrodes are arranged on a first interlayer of a multilayer body in an interdigital form; a plurality of second resonant electrodes are arranged on a second interlayer in an interdigital form; and an input coupling electrode and an output coupling electrode are arranged on a third interlayer located between the first interlayer and the second interlayer. The input coupling electrode faces an input-stage first resonant electrode and an input-stage second resonant electrode in an interdigital form. The output coupling electrode faces an output stage first resonant electrode and an output-stage second resonant electrode in an interdigital form.

Bandpass filter, and wireless communication module and wireless communication apparatus which employ the bandpass filter

The present invention provides a high-frequency switching circuit comprising: two or more high-frequency switches SWand SWprovided correspondingly to a plurality of communication systems having mutually different frequency bands; and a control circuit DECadapted to control the switching of the two or more high-frequency switches SWand SW, in which a common antenna terminal ANTand common terminals ANTand ANTof the respective high-frequency switches SWand SWare connected via a matching circuit MAThaving a filtering function capable of allowing passage of direct current. When one path of the high-frequency switch SWis turned on, the other paths of the high-frequency switch SWand all paths of the high-frequency switch SWcan be turned off.

High-frequency switching circuit, high-frequency module, and wireless communications device

A high frequency module according to the present invention comprises a laminate board having a plurality of dielectric layers ( to ) stacked one on another, a branch filter circuit (DIP ) for separating a plurality of transceiver systems from each other, switch circuits (SW , SW ) for switching the respective transceiver systems between transmitter branches (TX) and receiver branches (RX), power amplifiers (AMP , AMP ) each comprising a matching circuit (MAT , MAT ) and a high frequency amplification semiconductor device for amplifying a transmission signal having a frequency within a pass band of each of the transmitter branches (TX), and couplers (COP , COP ) for monitoring outputs.

High frequency module having a laminate board with a plurality of dielectric layers

A dielectric ceramic composition comprising main components represented by a composition formula on the weight basis, aMgO.multidot.bCaO.multidot.cTiO.sub.2, wherein a, b and c satisfy the following relationships, 25.ltoreq.a.ltoreq.35, 0.3.ltoreq.b.ltoreq.7, 60.ltoreq.c.ltoreq.70, a+b+c=100, blended with a boron-containing compound in an amount of from 3 to 20 parts by weight reckoned as B.sub.2 O.sub.3 and an alkali metal-containing compound in an amount of from 1 to 12 parts by weight reckoned as the alkali metal carbonate per 100 parts by weight of the main components, as well as a multilayer resonator made of said composition, and a filter using said resonator. The ceramic composition can be fired together with a conductor metal such as Ag or Cu at a relatively low temperature of 900.degree. to 1050.degree. C., exhibits large dielectric constant and Q-value, and a relatively small temperature coefficient .tau.f, lending itself well for use as a material for high-frequency electronic parts. The resonator made of this ceramic composition exhibits excellent tproperties in high-frequency regions, and can be realized in a small size.

Dielectric ceramic composition, multilayer resonator made of said

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Yokohama, Japan

Shinji Isoyama