An antenna device includes a case, a first antenna and a second antenna including a capacitance loading element. The capacitance loading element includes a turning-around area turning around in a front-rear direction on at least one of a front side and a rear side thereof. When the turning-around area is provided on the front side, at least part of the first antenna is situated in front of the turning-around area. When the turning-around area is provided on the rear side, at least part of the first antenna is situated behind the turning-around area. When the turning-around area is provided on the front side and on the rear side, at least part of the first antenna is situated at least one of in front of the turning-around area on the front side and behind the turning-around area on the rear side.

An antenna device includes a case, a first antenna and a second antenna including a capacitance loading element. The capacitance loading element includes a turning-around area turning around in a front-rear direction on at least one of a front side and a rear side thereof. When the turning-around area is provided on the front side, at least part of the first antenna is situated in front of the turning-around area. When the turning-around area is provided on the rear side, at least part of the first antenna is situated behind the turning-around area. When the turning-around area is provided on the front side and on the rear side, at least part of the first antenna is situated at least one of in front of the turning-around area on the front side and behind the turning-around area on the rear side.

Devices, systems, and methods in which antenna elements are positioned together as an array at a corner of a mobile device, at least two of the antenna elements being oriented to provide beams in different directions with respect to the corner of the mobile device.

Devices, systems, and methods in which antenna elements are positioned together as an array at a corner of a mobile device, at least two of the antenna elements being oriented to provide beams in different directions with respect to the corner of the mobile device.

There is provided an antenna device for a vehicle capable of suppressing interference in a case where a plurality of antennas which receive signals in different frequency bands are close to one another. The antenna device for the vehicle includes a patch antenna and a capacitance loading element which are installed away from each other on an antenna base section which is attachable to a vehicle. The capacitance loading element is a part of an antenna capable of receiving a different use frequency band from which of the patch antenna, to form a three-dimensional shape in which a pair of linear conductors which respectively repeatedly turn in a predetermined direction are connected to each other via a linear connection conductor extending in a width direction of the antenna base section, and in the capacitance loading element, a length of a folded portion of each of the linear conductors is a non-resonant length of the patch antenna.

A combination antenna for mobile radio or for mobile radio and broadcasting services comprises at least one plastic film arranged above a base plate and coated with conductive antenna structures; and at least one antenna connection point coupled to antenna structures on the electrically conductive base plate as an electrical counterweight of the combination antenna.

A broad band dipole antenna includes a first top radiator which is a planar polygonal shaped surface arranged parallel to vertical axis of the broad band dipole antenna, a first bottom radiator which is a planar polygonal shaped surface arranged parallel to the first radiator and below of the first top radiator, a first coupler which is a planar polygonal shaped surface arranged in close proximity to both the first top radiator and the first bottom radiator, N−1 top radiators where each next top radiator is a copy of the previous top radiator which is rotated by approximately 360°/N around the vertical axis, where N is an integer greater than one, N−1 bottom radiators where each next bottom radiator is a copy of the previous bottom radiator which is rotated by approximately 360′/N around the vertical axis, N−1 couplers where each next coupler is a copy of the previous coupler which is rotated by approximately 360′/N around the vertical axis, a first jumper which connects bottom sides of all the top radiators, and a second jumper which connects top sides of all the bottom radiators.

An antenna device includes a case, a first antenna and a second antenna in the case, the second antenna including a capacitance loading element. The capacitance loading element includes an inclined portion which extends from a front-upper side toward a rear-lower side at a front side of the capacitance loading element. The first antenna is provided in a front side with respect to the inclined portion.

An antenna device includes: a planar antenna; and a metal body arranged a predetermined distance above the planar antenna, wherein the metal body is shifted in a predetermined direction with respect to the planar antenna, wherein the metal body is a metal plate and/or a parasitic element. The antenna device further includes an antenna which corresponds to a frequency band different from that of the planar antenna and a holder configured to maintain the predetermined distance between the planar antenna and the metal body, wherein the antenna is arranged in the predetermined direction.

An antenna device includes: a planar antenna; and a metal body arranged a predetermined distance above the planar antenna, wherein the metal body is shifted in a predetermined direction with respect to the planar antenna, wherein the metal body is a metal plate and/or a parasitic element. The antenna device further includes an antenna which corresponds to a frequency band different from that of the planar antenna and a holder configured to maintain the predetermined distance between the planar antenna and the metal body, wherein the antenna is arranged in the predetermined direction.