Nec Corporation

Obayashi Corporation

Sri International

Tomoya Kaneko

Koji Hamada

Tamaki Horii

Aveek Kumar Das

Eri Ohmoto

Satoru Doi

Maya Kagatani

Tatsuya Osugi

Hiroto Sato

Takashi Tsuchiya

Poojitha Preena

Masashi Suzuki

Daisuke Iwanaka

Takuma Nakabayashi

Hiroshi Toyao

Keishi Kosaka

Eiji Hankui

Toshihide Kuwabara

Manabu Yoshida

Kenzo Wada

Makoto Akaishi

A frequency variable filter includes variable resonators aligned in a predetermined direction, a coupling part configured to couple the adjacent variable resonators, and a coupling variable dielectric. The variable resonator includes a resonator and a frequency variable dielectric disposed in a movable state relative to the resonator, and is configured to be able to change a resonance frequency according to a position of the frequency variable dielectric with respect to the resonator. This applies to aligned variable resonators other than this variable resonator. The coupling variable dielectric is disposed in a movable state with respect to the coupling part and configured to adjust a coupling coefficient according to an amount of insertion into the coupling part. The coupling variable dielectric is disposed so that a movable surface of the coupling variable dielectric is on the same plane as a movable surface of the frequency variable dielectric.

Frequency variable filter and coupling method

A system for managing images obtains an image that is captured by an image capture device at an image capture position and an image capture time; and stores the image, the image capture position, and the image capture time. The system further determines a position of a subject included in the image based on the image capture position. The system further stores index information comprising a target identifier of the subject, the position of the subject, and the image capture time in association with the stored image. The system further determines index information corresponding to the search instruction when obtaining a search instruction of the image; and extracts the image corresponding to the determined index information.

System, method, and computer-readable medium for managing image

A system for managing a position of a target stores identification information for identifying a target to be managed in association with position information indicating a position of the target. The system further obtains an image from an image capture device attached to a mobile device and obtains the image captured by the image capture device at an image capture position and image capture position information indicating the image capture position. The system further locates the position of the target included in the image using the image capture position information. The system further stores the position of the target in association with the identification information of the target.

System, method, and computer-readable medium for managing position of target

Provided is a mounting base member used in a pair for mounting an object to be conveyed thereon, the mounting base member including: a body part configured to support the object to be conveyed; and a top plate part that extends in at least a horizontal direction from an upper part of the body part. The top plate part covers an upper surface of the body part, or the upper surface of the body part contacting the conveyed object is flush with an upper surface of an extending portion of the top plate part.

Mounting base member, mounting base, and mounting method

An antenna apparatus includes a plurality of circuit boards, an antenna element, and an electronic component. A plurality of the antenna elements are arranged along the surfaces of the plurality of circuit boards. The electronic component is arranged along the surfaces of the circuit boards, configured to be larger in size in the thickness direction of the circuit boards than a gap between the antenna elements, and connected to the arranged antenna elements via a high-frequency transmission circuit. The plurality of circuit boards are arranged with component mounting surfaces arranged oppositely to each other and, for each pair, the positions corresponding to the electronic component are misaligned in the surface direction of the circuit boards.

Antenna apparatus, circuit board, and arrangement method

Bearer

A coaxial line having a small transmission loss and a variable operating frequency can be provided. The coaxial line includes one or a plurality of unit structures repeatedly arranged in a direction of a central axis. The unit structure includes an inner conductor, two dielectrics arranged in the central-axial direction so as to sandwich the inner conductor therebetween, an outer conductor configured to envelop the inner conductor and the dielectrics, and an inductor connected between the inner conductor and the outer conductor.

Coaxial line, resonator, and filter

To provide a compact antenna capable of corresponding to a plurality of frequency bands. In a first frequency characteristic adjustment unit, the susceptance thereof varies according to a frequency of an input signal. A second frequency characteristic adjustment unit is connected to the first frequency characteristic adjustment unit and the reactance thereof varies according to the frequency of the input signal. A third frequency characteristic adjustment unit is connected to the second frequency characteristic adjustment unit, the susceptance thereof varies according to the frequency of the input signal. A feeding unit is configured to input a signal of any frequency in a plurality of different frequencies to the second frequency characteristic adjustment unit. A sign of the reactance of the second frequency characteristic adjustment unit at the frequency of the signal input from the feeding unit is the same as those of the susceptances of the first frequency characteristic adjustment unit and the third frequency characteristic adjustment unit.

Antenna and wireless communication device

A first exemplary aspect of the present invention is a dielectric resonator including: a substrate () including a first conductor layer, a second conductor layer, and a dielectric layer formed between the first conductor layer and the second conductor layer, a plurality of conductive through holes () that penetrate the substrate () and are formed along a first annular line, and in which at least side walls are covered with a conductor, and a plurality of non-conductive through holes () that penetrate the substrate () and are formed along a second annular line prescribed inside the first annular line, and in which side walls are covered with a non-conductor or the dielectric layer is exposed on the side walls.

Substrate having conductive and non-conductive through holes forming a resonant portion usable as a dielectric resonator, filter and duplexer

A package substrate has a high frequency transmission line, which is formed by a high frequency circuit layer formed on the surface, a grounding layer formed thereunder and a dielectric ceramic intervening between the layers and , and also has a plurality of MMICs A lid as a shielding member which electromangetically shields the high frequency transmission line and the MMICs from one another, is bonded to the surface of the package substrate The lid has recesses formed such as to face the high frequency transmission line and the MMICs The surface of the package substrate and the outer periphery of the lid are hermetically sealed together by water-resistant resin. Thus, a step of bonding a shielding member is simplified and the yield of hermetic sealing of the bonded part of the shielding member is improved.

Microwave integrated circuit multi-chip-module

An object of the present invention is to provide an ALC circuit for a transmitter device and its method which are capable of obtaining a detected voltage of sufficient and stable voltage over a wide high-frequency output power range. A signal extracted from a part of a transmission output signal by a directive coupler and a signal obtained by branching and amplifying a part of a local oscillation signal which is inputted to a first mixer for an up-convertor are inputted as a local oscillation signal of a second mixer. After the local oscillation signal has been down-converted into an intermediate frequency signal, it is inputted to a logarithmic amplifier through a band pass filter. The output signal of the logarithmic amplifier is extracted as a detected signal through a diode detector and amplified by a differential amplifier. The variable attenuator is controlled according to the amplified output to obtain a transmission output power.

Growing community of inventors

Tokyo, Japan

Tomoya Kaneko