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 antenna system loaded in a vehicle according to the present invention includes a first antenna system having a plurality of first antenna elements disposed within a structure mounted in the vehicle, to perform Multi Input Multi Output (MIMO), and a second antenna system having a plurality of second antenna elements attached to side surfaces of a polyhedron disposed within the structure, to perform beamforming, wherein the plurality of first antenna elements is provided on substrates, arranged on the structure by predetermined angles, at front and rear sides of the polyhedron, whereby an antenna arrangement structure with an optimized isolation characteristic among antenna elements can be provided in a flat vehicle antenna having an LTE antenna system and a 5G antenna system.

An antenna system includes a glass plate having a thickness of 1.1 mm or more and a dielectric loss tangent of 0.005 or more at 28 GHz, and an antenna located away from one of surfaces of the glass plate, wherein a ratio of electric power radiated from the antenna to electric power input into the antenna is defined as a radiation efficiency, and when an effective wavelength of an electromagnetic wave at a predetermined frequency is 10 GHz or more is denoted as Ag and the radiation efficiency as .sub.0 [dB] when the glass plate and the antenna are in contact, and is denoted as .sub.g/2 [dB] when a distance between the one of the surfaces and the antenna is g/2, the glass plate and the antenna are arranged to obtain the radiation efficiency of .sub.A [dB] that satisfies .sub.A.sub.0+(.sub.g/2.sub.0)0.1.

An antenna apparatus for transmitting and receiving electromagnetic waves via a cover member disposed outside, including: first and second antenna sections that are disposed adjacently to each other along a direction orthogonal to a predetermined direction to which the electromagnetic waves are transmitted and received and that transmit the electromagnetic waves, respectively; and first and second dielectric lenses that are disposed in the predetermined direction to which the first and second antenna sections transmit their electromagnetic waves and narrow beams of the electromagnetic waves transmitted by the first and second antennas, respectively, to transmit to the outside, in which an outer end face of first dielectric lens protrudes further forward in the predetermined direction than an outer end face of second dielectric lens.

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.

Disclosed is a vehicular antenna, which includes an antenna module having an antenna patch, a reflector installed to be spaced apart from the antenna patch by a predetermined distance to maximize a gain of an electromagnetic wave radiated from the antenna patch at a specific angle, and a dielectric substance inserted and installed between the antenna patch and the reflector.

The present invention relates to an antenna, a vehicle radar, and a vehicle equipped with the same. An antenna according to an embodiment of the present invention comprises: a substrate; a first conductive patch disposed on a first surface of the substrate; a second conductive patch disposed on a second surface of the substrate; first and second feeders electrically connected to the first conductive patch; a plurality of vias surrounding the periphery of the first and second conductive patches; a loop member disposed on the first surface of the substrate and surrounding the vias; and a third feeder electrically connected to the loop member, wherein the area of the first conductive patch and the area of the second conductive patch are the same. Thus, it is possible to stably transmit and receive radio waves in all directions.

An antenna apparatus includes: a base member; a case member fixed to the base member with a fixing tool; and a pad member for covering a peripheral edge of the base member. The case member has a boss into which the fixing tool is inserted. A portion of the pad member is compressed by fixing the boss and the base member with the fixing tool.

The disclosure relates to a method for controlling a transmission power for a radio connection from at least one interior antenna of a motor vehicle to at least one radio device outside of the vehicle. At least one seat occupancy sensor of the motor vehicle signals seat occupancy of an associated vehicle seat by means of an associated occupancy signal. The transmission power at the at least one interior antenna is controlled in accordance with the occupancy signal. The disclosure further relates to a control device and to a motor vehicle having such a control device.