Panasonic Intellectual Property Management Co., Ltd.

Uchiyama Manufacturing Corp.

Koichi Tsumura

Yuki Iida

Tomokazu Sumida

Toshihiro Okuda

Dai Mori

An antenna apparatus capable of being downsized while preventing performance degradation is provided. Antenna apparatus includes: first antenna; second antenna; first ground plane to which first antenna is connected via first power feeder; and second ground plane to which second antenna is connected via second power feeder. In antenna apparatus, first ground plane and second ground plane are provided substantially in parallel with each other.

Antenna apparatus

A feed element is disposed over a surface of a first conductor. A second conductor is disposed at a distance from the feed element greater than a distance between the feed element and the surface. The second conductor has a second shape that is a sheet-like shape in plan view. The second conductor is disposed to overlap the surface of the feed element. At least a part of the third conductor is located closer to the first conductor than the second conductor is located, in a direction perpendicular to the surface of the second conductor. The at least part of the third conductor is located farther than a part of the second conductor with respect to the feed element. A second distance between the at least part of the third conductor and the first conductor is less than twice a first distance between the feed element and the first conductor.

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Kanagawa, Japan

Koichi Tsumura