A vehicle antenna includes a conductor plate, a radiator plate facing the conductor plate, a feeding portion located on a same side as the conductor plate with respect to the radiator plate, a connection conductor connecting the feeding portion and the radiator plate, and a first element and a second element arranged away from each other on both sides in a vehicle-width direction of a vehicle with respect to the radiator plate, wherein the radiator plate is arranged at an inclination of equal to or less than 15 degrees with respect to a vertical plane perpendicular to a horizontal plane.

An antenna installation configuration includes: a vehicle-mounted apparatus that is mounted to a dashboard of a vehicle, the vehicle-mounted apparatus including a human-machine interface and a main body that is arranged in front of the human-machine interface, relative to a traveling direction of the vehicle; and an antenna attached to the main body, the antenna having a directivity directed toward an inside of a cabin of the vehicle and bypassing the human-machine interface.

An in-cabin communication system performs wireless communication between a vehicle and a portable terminal carried by an occupant. The in-cabin communication system includes: a vehicular device mounted to the vehicle; and a leaky coaxial cable that is connected to the vehicular device, and that outputs an electromagnetic wave having a predetermined wavelength according to a command from the vehicular device. The leaky coaxial cable is disposed inside a steel plate of a body of the vehicle. The leaky coaxial cable is disposed at a predetermined distance, which corresponds to an integer multiple of a half-wavelength of the predetermined wavelength, from the steel plate.

The present invention relates to an antenna arrangement for a vehicle, in which a first antenna structure is arranged in a housing of an impedance converter and a second antenna structure is arranged in or on a vehicle pane.

An antenna module to be provided to a vehicle includes: an array antenna configured to form a beam directed from an aperture provided in an exterior body panel of the vehicle, toward a vehicle outside; and a housing holding the array antenna in a vehicle inside.

A wireless communication device includes an antenna, a communication module and a shield case. The antenna is disposed on an antenna board. The communication module is connected to the antenna and executes a wireless communication. The shield case stores the communication module inside the shield case. The antenna board is disposed to be in thermal contact with the shield case.

An antenna module is configured to be attached to a ceiling of a vehicle, the antenna module including an antenna and a magnetic body including a pair of walls spaced apart from each other. The antenna is accommodated between the pair of walls. The magnetic body may be disposed on the ceiling of the vehicle such that the magnetic body shields a magnetic field generated by the antenna and directed toward a window of the vehicle.

An antenna module includes a first antenna and a second antenna disposed beside the first antenna. The second antenna has a second feed-in end and a second ground end and includes a first radiator, a second radiator and a third radiator. The first radiator extends from the second feed-in end along a direction and has a first slit. The second radiator extends from the second feed-in end along another direction opposite to the direction, is connected to the second ground end in a bent manner, and has a portion of a second slit. The third radiator extends from the second ground end along the direction. Another portion of the second slit is disposed between the first radiator and the third radiator.

An antenna unit includes a planar antenna portion, a planar coaxial line portion, and position fixing portions. The planar antenna portion includes planar antennas installed at the inner side of an exterior (for example, a roof panel) of a vehicle, the exterior allowing electric waves to be transmitted therethrough, and a first base portion supporting the planar antennas. The planar coaxial line portion includes second wiring patterns connected to the planar antennas and a second base portion connected to the first base portion and supporting the second wiring patterns. The position fixing portions fix the positions of the planar antenna portion and the planar coaxial line portion onto the exterior.

An antenna system loaded in a vehicle according to the present invention includes a first antenna system to perform Multi Input Multi Output (MIMO) by use of a plurality of first antenna elements provided therein to transmit and receive a first signal according to a first communication system, and a second antenna system to perform beam-forming by use of a plurality of second antenna elements configured to transmit and receive a second signal according to a second communication system, wherein the plurality of first antenna elements and the plurality of second antenna elements are disposed on the same circuit board, whereby an antenna arrangement structure with optimized isolation among antenna elements in a flat vehicle antenna having an LTE antenna system and a 5G antenna system can be provided.