Murata Manufacturing Co., Ltd.

Takashi Maruyama

Hideyuki Kato

Yukihiro Kitaichi

Yasuo Yamada

Hajime Suemasa

Hitoshi Tada

Haruo Matsumoto

Shinichi Kenzaki

Hirohumi Miyamoto

Hiroshi Tada

Hiroki Wakamatsu

Toshitaka Kuriyama

Tadahiro Yorita

Jinsei Ishihara

Jun Toda

Hiroaki Shimada

Tsutomu Wakayama

An outer conductor has a substantially cylindrical shape extending in an axial direction. A center conductor has a substantially cylindrical shape extending in the axial direction, and is provided inside the outer conductor. An insulator fixes the center conductor relative to the outer conductor. The center conductor is provided with a hole that communicates with the inside and the outside of the center conductor. The insulator extends, via the hole, to the inside of the center conductor from the outside.

Coaxial connector plug

An outer conductor portion includes an outer conductor and a pair of outer terminals. The outer conductor is formed into a substantially cylindrical shape extending in the z-axis direction. The outer terminals are drawn toward the positive z-axis direction side of the outer conductor. In a plan view in the z-axis direction, the outer terminals are each bent in a direction outwardly from the outer conductor, and face each other across the outer conductor. An insulator has two sides, an upper surface in contact with a positive z-axis direction-side end portion of the outer conductor, and a lower surface in contact with the outer terminals at the sides, and thereby is nipped by the outer conductor portion in the z-axis direction. A central conductor is attached to the insulator, and is provided in a region surrounded by the outer conductor.

Coaxial connector plug and manufacturing method thereof

Coaxial connector

A dielectric filter includes a conductive cover formed by bending a metal plate and forming at least one inwardly projecting portion at a predetermined position along the bent portion. The inner surface of the at least one inwardly projecting portion abuts on an open circuit surface or edge of a dielectric block. Thus, the distance between the open circuit surface of the filter and the conductive cover is reliably maintained and unnecessary coupling between adjacent resonators is prevented.

Conductive cover for dielectric filter, dielectric filter, dielectric duplexer, and communication apparatus

An electronic part comprising: a printed circuit board including a first major surface and a second major surface; a circuit element disposed on the first major surface of the printed circuit board; a terminal electrode disposed on the second major surface of the printed circuit board and including a major surface opposed to the second major surface of the printed circuit board; a soldering-resistant film disposed on the second major surface of the printed circuit board and including a major surface opposed to the second major surface of the printed circuit board; wherein the distance between the major surface of the terminal electrode and the second major surface of the printed circuit board is substantially equal to or larger than the distance between the major surface of the soldering-resistant film in the vicinity of the terminal electrode and the second major surface of the printed circuit board.

Electronic part, dielectric filter, dielectric duplexer, and manufacturing method of the electronic part

A compact dielectric resonator device that permits reduction in size of a metal cover without deterioration of the filter characteristics of the device. In this dielectric resonator device, a plurality of dielectric coaxial resonators are mounted on a substrate. A metal cover is arranged in such a manner as to enclose substantially only the open faces of the dielectric coaxial resonators, where terminals electrically connected to inner conductors of the dielectric coaxial resonators are led out. In addition, protrusions of the metal cover are electrically connected to parts of the outer conductors of the dielectric resonators between the adjacent dielectric coaxial resonators.

Dielectric resonator device, dielectric duplexer, and communication apparatus incorporating same

A surface-mount air-core coil has a coil body formed by winding a conductive wire spirally and mount legs formed by folding both ends of the conductive wire horizontally toward the inside. The lower surfaces of the mount legs are positioned below the lower surface of the coil body. The length of the mount legs is set longer than the width of the coil body.

Surface-mount air-core coil, electronic component having the same, and communication apparatus having the same

The invention provides a dielectric filter, comprising: a dielectric block including a first surface and a second surface opposite to each other; a resonator hole extending between the first surface and second surface of the dielectric block, said resonator hole including a large-sectional area portion, a small-sectional area portion and a step portion between the large-sectional area portion and the small-sectional area portion; an inner conductor provided on the inner surface of the resonator hole; an outer conductor provided on the outer surface of the dielectric block; the inner conductor being electrically left unconnected to the outer conductor at the first surface of the dielectric block and being electrically connected to the outer conductor at the second surface of the dielectric block; and a seat portion provided on the first surface of the dielectric block such that the first surface serves as a mounting surface of the dielectric filter.

Dielectric filter, dielectric duplexer, mounting structure thereof, and communication device

Surface-mount air-core coil, electronic component having the same, and

A coaxial connector receptacle which includes a casing, a hole which is formed in the casing and into which a plug with a conductor is to be inserted, a conductive protrusion provided in the hole for the purpose of receiving the conductor when the plug is inserted into the hole, and an access terminal extending from the protrusion along the bottom surface of the casing, wherein the access terminal is embedded in the casing member such that it is exposed so as to allow access from outside. Since the access terminal is embedded in the wall surface of the casing, the receptacle can be made compact in size.

Coaxial connector receptacle

The invention provides a coaxial connector wherein a bushing can be mounted to a housing more easily, poor pressure resistance and characteristic impedance due to socket displacement can be eliminated, and deformation of the front end of the socket can be prevented. The coaxial connector of the invention includes projections along the outer periphery of the bushing, and cutouts in the housing. The bushing has a cover that covers the upper portion of the socket. In addition, the bushing has a tapered intermediate portion between its base portion and its front end. The bushing is positioned around the axis, and displacement of the mounting position of the socket to the bushing and deformation of the front end of the socket are prevented.

A method of manufacturing a dielectric resonant component includes at least one dielectric multistage resonator including one dielectric block, a plurality of inner conductor formation holes formed in the one dielectric block, an inner conductor formed on an inner surface of each of the inner conductor formation holes, and an outer conductor covering a substantially entire outer surface of the one dielectric block, the dielectric multistage resonator constituting a plurality of dielectric resonators in the one dielectric block; and a mount substrate fixedly mounted on the dielectric multistage resonator, for transmitting signal transmission between each of the dielectric resonators of the dielectric multistage resonator and an external circuit board, when the dielectric resonant component is mounted on the external circuit board. The dielectric multistage resonator further includes a pair of input/output electrodes, and the mount substrate includes a unit for connecting the input/output electrodes of the dielectric multistage resonator to a pair of input/output electrodes formed on the circuit board.

Method of manufacturing a dielectric resonant apparatus

A dielectric resonant component includes at least one dielectric multistage resonator including one dielectric block, a plurality of inner conductor formation holes formed in the one dielectric block, an inner conductor formed on an inner surface of each of the inner conductor formation holes, and an outer conductor covering a substantially entire outer surface of the one dielectric block, the dielectric multistage resonator constituting a plurality of dielectric resonators in the one dielectric block; and a mount substrate fixedly mounted on the dielectric multistage resonator, for transmitting a signal transmission between each of the dielectric resonators of the dielectric multistage resonator and an external circuit board, when the dielectric resonant component is mounted on the external circuit board. The dielectric multistage resonator further includes a pair of input/output electrodes, and the mount substrate includes a unit for connecting the input/output electrodes of the dielectric multistage resonator to a pair of input/output electrodes formed on the circuit board.

Growing community of inventors

Kyoto-fu, Japan

Takashi Maruyama