Yokowo Co., Ltd.

Kabushiki Kaisha Toyota Jidoshokki

Tomohiko Yamase

Satoshi Iwasaki

Kazuya Matsunaga

Seiji Go

Yuichi Mizutani

An antenna apparatus has a sleeve antenna. The sleeve antenna has an internal conductive member, an external conductive member, an insulating member, and a mountain-shaped conductive member that is electrically connected to the external conductive member. The mountain-shaped conductive member expands radially from an upper edge towards a lower edge. The internal conductive member protrudes higher than the external conductive member above the upper edge of the mountain-shaped conductive member.

Antenna apparatus

An antenna device includes: an antenna element for vertically polarized waves, having a first straight line portion of which one end serves as a power feeding point, and an annular portion of which one end is connected to another end of the first straight line portion; and a first dielectric cover covering the antenna element from outside. An antenna device includes: an antenna element for vertically polarized waves, having a first straight line portion of which one end serves as a power feeding point, and an annular portion of which one end is connected to another end of the first straight line portion; and a second dielectric cover covering the first straight line portion and the annular portion from outside.

Antenna device

A vehicle includes a roof panel and a vehicle antenna device. The roof panel includes a roof portion and an antenna cover portion that protrudes from the roof portion and has an internal space. The vehicle antenna device includes a base portion and an upright portion that extends from the base portion into the internal space in the antenna cover portion. An outer imaginary plane is assumed to extend along a boundary line on a boundary portion between an outer surface of the roof portion and an outer surface of the antenna cover portion. In a state where the vehicle antenna device is mounted on the vehicle, at least part of the base portion is located below the outer imaginary plane.

Growing community of inventors

Tomioka, Japan

Tomohiko Yamase