A remote control system for a vehicle having an onboard vehicle controller for controlling vehicle functions and a mobile radio remote control, connected to the vehicle controller in a signal-transmitting manner, for remotely controlling the vehicle functions according to a location of the radio remote control relative to the vehicle. The vehicle controller and the radio remote control each have at least one antenna for wireless signal transmission between the vehicle controller and the radio remote control. The antenna of the radio remote control has a direction-dependent antenna characteristic. At least one spatial position of the antenna of the radio remote control can be determined automatically by a position sensor device of the radio remote control, and an automatic determination of a distance or spatial location of the radio remote control relative to the vehicle can be processed according to the determined spatial position of the antenna.

The present invention relates to a window glass for vehicle, which includes a glass plate and an antenna provided to the glass plate and capable of receiving electromagnetic waves of AM broadcasting and FM broadcasting, in which the antenna includes an antenna element and a feeding portion electrically connected to the antenna element, the antenna element lies at a distance of longer than 20 mm from a metallic portion of the vehicle in a vehicle-mounted state, the antenna element includes at least one horizontal portion extending in an approximately horizontal direction in the vehicle-mounted state, the horizontal portion has an open end or has a bent portion bending apart therefrom which has an open end, and the horizontal portion has a total element length that is at least 3/4 of an overall length of the antenna element.

A communication apparatus for a vehicle according to an embodiment and a control method therefor are disclosed. The communication apparatus for a vehicle comprises: an antenna unit including a first antenna and a plurality of second antennas; a first switch for switching a first path to the first antenna and a second path to each of the plurality of second antennas; a second switch for switching a second path to any one of the plurality of second antennas; a length adjustment unit that is connected to the second path to the one second antenna connected to the second switch and adjusts the resonance length of the connected second antenna; and a communication control unit that generates a switching signal for connection to any one of the plurality of second antennas according to the state of the first antenna.

Antenna having a housing (3), a core (1) and a coil (2), which is wound around the core (1), the core (1) with the coil (2) in a potting compound (5) being mounted in the housing (3), the potting compound (5) being softer than 40 Shore A.

An antenna device (10) includes a substrate (100) including a first surface (102), a first antenna (200) provided on the substrate (100), a second antenna (300) provided on the substrate (100), and a third antenna (400) provided on the first surface (102) of the substrate (100), and a center point (CP) of the third antenna (400) is positioned on the same side as an end portion (EP2) of the second antenna (300) furthest from the first antenna (200), relative to a center line (CL) passing through a center of a line (L) connecting an end portion (EP1) of the first antenna (200) furthest from the second antenna (300) and the end portion (EP2) of the second antenna (300) furthest from the first antenna (200), or relative to a center line (CL) of the first surface (102) of the substrate (100).

A processing unit analyzes a reception signal to calculate, for every plurality of receiving antennas, a velocity spectrum in which a frequency is associated with a velocity at which the phase of the reception signal is changed at every cycle period. The processing unit extracts, as a group of identical object peaks, peaks that are generated on a velocity spectrum due to an identical object and that are identical in number to transmitting antennas. The processing unit determines, for each of the plurality of peaks constituting the group of identical object peaks, whether there is power variation among a plurality of the receiving antennas. The processing unit calculates an orientation of the object except for virtual receiving antennas included in a plurality of virtual receiving antennas and formed by the transmitting antennas corresponding to the peaks determined to involve the power variation.

A train positioning method includes acquiring first device identification information at an antenna; acquiring train positioning information; after determining the first device identification information is trustworthy, storing the first device identification information and the positioning information in a non-volatile memory; after awakening the train from dormancy mode, receiving second device identification information using the antenna; according to the received second device identification information and the first device identification information from the memory, determining whether, after being awakened, the train is at the same position as before entering dormancy mode; upon determining that, after awakening, the train is at the same position as before entering dormancy mode, determining the current position and direction of the train match positioning information in the memory, and completing positioning of the train. This ensures the usage experience of users of a train. An apparatus, a system, and a computer-readable medium are also provided.

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 λg and the radiation efficiency as η.sub.0 [dB] when the glass plate and the antenna are in contact, and is denoted as η.sub.λg/2 [dB] when a distance between the one of the surfaces and the antenna is λg/2, the glass plate and the antenna are arranged to obtain the radiation efficiency of η.sub.A [dB] that satisfies η.sub.A≥η.sub.0+(η.sub.λg/2−η.sub.0)×0.1.

Proposed is a smart antenna module for a vehicle in which a plurality of cellular antennas are mounted in a non-ground area and spaced apart from a ground pattern to minimize mutual interference. In the proposed smart antenna module for a vehicle, a first antenna is disposed in a ground area of a base substrate, the cellular antennas are disposed in a non-ground area of the base substrate, and the cellular antennas are electrically connected to the ground area of the lower surface of the base substrate.

A dual broadband and multiband antenna system of reduced dimension is preferably an external antenna for vehicles. The antenna system comprises first and second radiating elements and a flat ground plane in common for the two radiating elements. The two radiating elements are placed above the ground plane, with each radiating element being folded to form vertical and horizontal surfaces. The two vertical surfaces are orthogonal to the ground plane and parallel to each other. The horizontal surfaces are coplanar between vertical surfaces and parallel to the ground plane. Two parasitic elements are connected with the ground plane, and are parallel or coplanar with the horizontal surfaces, and extend partially around respectively the first and second radiating elements. The antenna system is preferably adapted to operate on the LTE communication network and provides 5G communication services.