Ntn Corporation

Tomokazu Sonozaki

Natsuhiko Mori

Hiroyuki Noda

Fuminori Satoji

Kei Hattori

Seiji Shimizu

Katsuo Shibahara

Hiroshi Akai

A vehicle-mounted fin type antenna deviceincludes a plurality of antenna unitsto, a circuit boardelectrically connected to the plurality of antenna unitsto, and a radomeaccommodating the plurality of antenna unitstoand the circuit boardin an inside of the radome. The radomeis formed of a resin material that contains a crystalline resin as a base resin and has a deflection temperature under load of 100&#xb0; C. or more.

Cover and vehicle-mounted fin type antenna device

A waveguide tube slot antenna () includes a waveguide tube () that is made of a resin and includes a waveguide () extending in a tube axis direction; and a plurality of radiating slots () provided in the waveguide tube (). The waveguide tube () includes first and second waveguide tube forming members (and) each having a traverse section having a shape with an end at each part in an extending direction of the waveguide (), and is configured to define the waveguide () by being coupled to each other. The waveguide tube slot antenna () includes metal cores () disposed along the tube axis direction, and the metal cores () are held by both the waveguide tube forming members (and).

Waveguide slot antenna and method for producing same

Provided is a chip antenna (), including: an antenna pattern (); and a base body (), which has a hexahedral shape, the antenna pattern () including: an antenna part (), which is held on an upper surface of the base body (); and a plurality of terminal parts (), which are held on a lower surface of the base body (), each of the plurality of terminal parts () being soldered to a circuit board (), in which the antenna pattern () further includes a band-shaped protruding part (), which extends in a long-side direction of the antenna part (), and is embedded in the base body (), and the band-shaped protruding part () is provided at least along a range of each of two long sides of the antenna part () excluding a range in which the plurality of terminal parts () are arranged.

Chip antenna

A multiband antenna includes a first antenna unit () and a second antenna unit (). The first antenna unit () includes a first antenna pattern () formed of a conductor and a first substrate () formed of a dielectric, for holding the first antenna pattern (). The second antenna unit () includes a second antenna pattern () formed of a conductor and a second substrate () formed of a dielectric having a dielectric constant different from the dielectric constant of the first substrate (), for holding the second antenna pattern (). In the multiband antenna, by injection molding the second substrate () with the first antenna unit () and the second antenna pattern (), which being insert components, the first antenna unit () and the second antenna unit () are integrated.

Multiband antenna and manufacturing method thereof

Provided is a waveguide tube slot antenna (A), including: a waveguide tube () having a transverse section having a rectangular shape in each part of a waveguide () in an extending direction thereof; and a plurality of radiating slots () arranged in the waveguide tube () at predetermined intervals, in which: the waveguide tube () includes a first waveguide tube forming member () and a second waveguide tube forming member () each having the transverse section having a shape with an end, the first waveguide tube forming member () and the second waveguide tube forming member () being configured to define the waveguide () by being coupled to each other; and the first waveguide tube forming member () is formed to have a flat shape and includes the plurality of radiating slots ().

Waveguide slot antenna and warning system using same

Provided is a waveguide tube slot antenna () including: a plurality of waveguides () arranged in parallel with each other; a plurality of radiating slots () formed along each of the plurality of waveguides (); and a plurality of waveguide tubes () connected in parallel with each other, in which the plurality of waveguide tubes () each include a first waveguide tube forming member () and a second waveguide tube forming member () each having a transverse section having a shape with an end, the first waveguide tube forming member and the second waveguide tube forming member being configured to define one of the plurality of waveguides () by being connected to each other.

Waveguide tube slot antenna and wireless device provided therewith

Disclosed is an oil-impregnated sintered bearing in which local relative sliding between the oil-impregnated sintered bearing and the shaft is avoided, thereby mitigating stress concentration on the bearing surface of the oil-impregnated sintered bearing. An oil-impregnated sintered bearingwhich has in its inner periphery a bearing surfacemaking relative sliding with the outer peripheral surfaceof a shaftand which has at both axial ends of the bearing surfacecrowning portionswhich are of a configuration satisfying the following conditions: 1.75&#xd7;10&#x2266;&#x3b3;/b5.2&#xd7;10, and 1.75&#xd7;10&#x2266;&#x3b3;/b&#x2266;5.2&#xd7;10, and 0.2&#x2266;(bb)/a&#x2266;0.8, where &#x3b3; is the maximum radial drop amount of the crowning portions, bis the axial length of the crowning portionat one axial end; bis the axial length of the crowning portionat the other axial end; and a is the total axial length of the oil-impregnated sintered bearing

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Mie, Japan

Tomokazu Sonozaki