Mitsumi Electric Company Ltd.

Junichi Noro

Takao Kato

Kyuichi Sato

Hisashi Takisawa

Toshiaki Aizawa

Toshihiko Inaba

Yuichi Saito

Akira Miyoshi

Kenichi Kamada

Hirokazu Awa

Arata Togashi

Takumi Suzuki

Kenichi Taguchi

Kazunari Saito

Shozo Miyamoto

Masaaki Miyata

Tomohiro Shinkawa

Nobuaki Monma

Kumeo Sasaki

Takeshi Iizuka

Kanenari Kusanagi

Isao Fukae

Takeshi Saito

Nobuo Tamura

Satoshi Kohno

Kozo Shimizu

Satoshi Satoh

Shinya Yamada

Toshikazu Ogino

Tsutomu Ito

Hideo Yajima

Yoshiaki Imano

Akira Yoneya

Makoto Abe

Hiroshi Suzuki

Satoshi Sato

Naoto Kondo

Shinji Tsuyuki

Akemi Kato

Wataru Sakaguchi

Takashi Horikawa

A shield cover is disposed so as to be opposed to a bottom plate and electromagnetic-shields a signal processing circuit mounted on a rear surface of a circuit board. The shied cover has a ceiling portion which includes a mounter vacuumed portion disposed in a center portion of the ceiling portion and vacuumed by a vacuum nozzle of a mounter, a ring-shaped outer edge disposed from an end of the side wall portion inwardly, and a plurality of beam portions joining the mounter vacuumed portion to the outer edge. An electromagnetic shielding of the signal processing unit is carried out using both of the shield cover and the bottom plate.

Antenna unit including a shield cover having a ceiling portion with a mounter vacuumed portion

A composite antenna apparatus is disclosed. A rod member accommodates a first antenna element and a second antenna element therein. A base member accommodates a circuit board therein. A connector couples an end portion of the rod member and the base member. The connector includes a first conductive member configured to transmit a first signal received by the first antenna element to the circuit board therethrough, and a second conductive member configured to transmit a second signal received by the second antenna element to the circuit board therethrough.

Composite antenna apparatus

An antenna device includes an antenna, the antenna including an antenna element, a circuit board, and a planar metallic holder disposed between the antenna element and the circuit board. The antenna device further includes an antenna case accommodating the antenna, and the antenna case include a top cover and a bottom plate serving as a base. The metallic holder supports the antenna element on the base, and includes a flat-shaped portion mounting a bottom surface of the antenna element and a plurality of tabs extending upwards from peripheral edges of the flat-shaped portion. The plurality of tabs includes a pair of front tabs and a pair of rear tabs, and a distance between the pair of front tabs is shorter than a distance between the pair of rear tabs.

Antenna with a metallic holder disposed between an antenna element and a circuit board

An antenna apparatus is disclosed. A circuit board has a first face, a second face opposite to the first face, and an edge formed with a notch connecting the first face and the second face. A circuit is arranged on the first face. An antenna element is configured to receive radio waves. A connecting member includes a first part coupled to the antenna element at a position opposing the second face and a second part fitted with the notch and elastically connected to the circuit.

Antenna apparatus

Disclosed is an antenna apparatus, including: a multi-layer substrate having at least two substrates in a stacking manner and having a first through hole; an amplifying circuit on one face of the multi-layer substrate; a ground pattern formed between two adjacent substrates of the multi-layer substrate; an antenna pattern formed on the other face of the multi-layer substrate; and a first comb electrode having comb teeth and a second comb electrode having comb teeth, both of which are formed around the antenna pattern on the other face of the multi-layer substrate. The first comb electrode is electrically connected to the antenna pattern. The second comb electrode is electrically connected to the ground pattern through the first through hole. The comb teeth of the first comb electrode and the comb teeth of the second comb electrode are spaced from one another at predetermined intervals in a staggered manner.

A hybrid antenna unit includes a circuit board having top and bottom surfaces, a planer antenna element which is mounted on the top surface of the circuit board and which receives first and second radio waves, an antenna base and a top cover that cover the circuit board and the planer antenna element. A bar antenna element stands on the top cover in a slanting position. A processing unit is mounted on the bottom surface of the circuit board and is connected to the planer antenna element. The processing unit processes the first and the second radio waves. A shielding case is mounted on the bottom surface of the circuit board and shields the processing unit. A booster circuit is mounted on the circuit board and is for use in the bar antenna element.

Hybrid antenna unit

An antenna apparatus, including: a power supply pin; a circuit substrate having a first through hole through which the power supply pin passes; and an antenna element having a second through hole which faces with the first through hole and through which the power supply pin passes, the antenna element being disposed at a distance from the circuit substrate; wherein the second through hole is formed smaller than a shaft diameter of the power supply pin and is widen by the power supply pin; and a periphery of the second through hole of the antenna element is curved to be convex toward the circuit substrate, and the power supply pin is fixedly nipped by a tip end of the periphery.

An antenna element includes: an antenna plate; an antenna probe formed monolithically with the antenna plate and extending in a vertical direction from the antenna plate; a ground plate disposed in parallel to the antenna plate at a distance; and a dielectric spacer disposed between the antenna plate and the ground plate, wherein the antenna probe is bent from an edge of the antenna plate toward a center thereof.

Antenna device, antenna element and antenna module

An antenna apparatus includes: a circuit board that has a main surface and a rear surface opposite to each other; an antenna element that is formed of a metal plate and is arranged at a predetermined distance from the main surface of the circuit board; a plurality of legs that extend from the antenna element toward the circuit board; a ground conductor that is formed on the main surface or the rear surface of the circuit board; a feeding pin that supplies power from the circuit board to the antenna element; and a plurality of comb-shaped capacitor patterns that are formed on one of or both the main surface and the rear surface of the circuit board and are electrically connected between the plurality of legs and the ground conductor.

To provide an antenna device adapted to interrupt jamming waves and enable cost reduction, a high-pass filter (HPF) adapted to interrupt general-use frequencies at least near a low-frequency side of a pass band intended for use is provided as a frequency selection circuitA on the antennaside in an initial-stage LNAA. By setting a low-side cutoff frequency to 900 MHz, it is possible to prevent reception of frequencies in a general-use frequency band with a high frequency of use as jamming waves. That is, for example, it is possible to prevent reception of frequencies in 800 to 900 MHz band for mobile cellular telephones and higher harmonics thereof as jamming waves. Further, since an additional filter is not required in the antenna device, the circuit structure can be simplified.

Low-noise amplifier and antenna device having the same

A circuit board has a first face and a second face opposite to the first face. An antenna element is mounted on the first face. A shield cover is attached to the second face. The shield cover includes a polygonal base portion, a first wall provided on a first side of the polygonal base portion, a second wall provided on a second side of the polygonal base portion, a third wall provided on a corner defined by the first side and the second side, and disposed between the first wall and the second wall, a first extending portion extended from the first wall so as to overlap with the third wall, and a second extending portion extended from the second wall so as to overlap with the third wall. The shield cover is soldered on the second face.

Antenna device and shield cover thereof

An antenna apparatus includes: an antenna element; and a substrate on which a low noise amplifier is mounted and on which the antenna element is disposed, wherein the substrate comprises: an input unit for inputting an electric signal into the low noise amplifier from an output terminal formed at a lower part of the antenna element; an output unit for outputting the electric signal to a transmission unit connected to a signal processing unit for processing the electric signal from the antenna element; and a signal blocking unit provided between the input unit and the output unit.

Disclosed is an antenna apparatus that includes: an antenna element including a receiving unit to receive a radio wave; a circuit board on which an amplifier circuit to amplify an input signal sent from the antenna element is formed; an input pin to connect the receiving unit with the amplifier circuit; and a shield cover to cover the amplifier circuit on the circuit board, the shield cover shielding the amplifier circuit from a disturbing wave, wherein the input pin penetrates through the circuit board and is connected to the amplifier circuit by soldering, so as to structure an input unit of the circuit, and an ascertainment aperture is provided in the shield cover, the ascertainment aperture positioned such that the input unit can be observed from outside of the shield cover.

Antenna apparatus including a shield cover which covers an amplification circuit, the shield cover having an aperture positioned to allow observation of an input unit of the amplification circuit from outside of the shield cover

A complex antenna device includes: an antenna base having a main surface and first and second ends opposed to each other; a bar antenna including a metal body and disposed upright on a side of the first end of the antenna base; at least one planar antenna mounted on the main surface of the antenna base between the first and second ends of the antenna base; a metallic member provided on a side of the second end of the antenna base so as to substantially remove physical influence of the bar antenna on the planar antenna.

Complex antenna device

Disclosed is an antenna apparatus including: an antenna element including a receiving unit to receive an electric wave; a circuit substrate including a circuit surface on which a circuit amplifying an input from the antenna element is formed; a shield cover covering the circuit surface to shield the circuit substrate from a disturbing wave, the shield cover being grounded; a coaxial cable to supply driving power and GND potential to the circuit, and to output a signal from the circuit, the coaxial cable inserted into the shield cover, wherein the shield cover includes a base surface disposed in parallel with the circuit surface and a tongue flap extending to the coaxial cable, and the tongue flap includes a connecting piece formed by bending an end of the tongue flap at a side of the coaxial cable, the connecting piece being soldered to an outer conductor of the coaxial cable.

Growing community of inventors

Akita, Japan

Junichi Noro