An antenna device includes a ground plate, a first planar parasitic element provided, at a position overlapping the ground plate in a plan view, along the ground plate, the first planar parasitic element being provided away from the ground plate, a first ground element in a cylindrical shape, the first ground element including a first end connected to the ground plate and a second end connected to the first planar parasitic element, and a first monopole feeding element including a first feeding end and a first open end, the first feeding end being provided on a side of the ground plate and fed with power, and the first open end being provided in proximity to an edge of the first planar parasitic element.

An antenna device includes a ground plate, a first planar parasitic element provided, at a position overlapping the ground plate in a plan view, along the ground plate, the first planar parasitic element being provided away from the ground plate, a first ground element in a cylindrical shape, the first ground element including a first end connected to the ground plate and a second end connected to the first planar parasitic element, and a first monopole feeding element including a first feeding end and a first open end, the first feeding end being provided on a side of the ground plate and fed with power, and the first open end being provided in proximity to an edge of the first planar parasitic element.

A system includes a housing operably coupled with a vehicle system, and a vehicle monitoring system disposed within the housing comprising a wireless communication device including an antenna configured to wirelessly communication data signals. One or more ground radials are electrically coupled with the wireless communication device and conduct the data signals from the wireless communication device. The one or more ground radials form a ground plane of the antenna while the vehicle system is moving and the antenna is wirelessly communicating the data signals.

A system includes a housing operably coupled with a vehicle system, and a vehicle monitoring system disposed within the housing comprising a wireless communication device including an antenna configured to wirelessly communication data signals. One or more ground radials are electrically coupled with the wireless communication device and conduct the data signals from the wireless communication device. The one or more ground radials form a ground plane of the antenna while the vehicle system is moving and the antenna is wirelessly communicating the data signals.

Provided are electronic devices, an antenna structure and a wearable device. The wearable device includes a metal casing including a bottom casing and a side frame surrounding an edge of the bottom casing and integrally connected with the bottom casing, the antenna structure includes a slot in the side frame, and the slot has a first end and a second end opposite to the first end in the first direction. The first direction is the direction surrounding the edge of the bottom casing; the slot is provided with an opening at the first end, and the opening faces the side away from the bottom casing; in the first direction, length from the first end to the grounding end of the slot is ¼ of operating wavelength; and a feeding terminal is arranged between the first end and the grounding end of the slot, and is close to the grounding end.

Provided are electronic devices, an antenna structure and a wearable device. The wearable device includes a metal casing including a bottom casing and a side frame surrounding an edge of the bottom casing and integrally connected with the bottom casing, the antenna structure includes a slot in the side frame, and the slot has a first end and a second end opposite to the first end in the first direction. The first direction is the direction surrounding the edge of the bottom casing; the slot is provided with an opening at the first end, and the opening faces the side away from the bottom casing; in the first direction, length from the first end to the grounding end of the slot is ¼ of operating wavelength; and a feeding terminal is arranged between the first end and the grounding end of the slot, and is close to the grounding end.

An antenna device includes a ground plane, a first feed via and a second feed via for penetrating the ground plane through a first hole and a second hole of the ground plane, a first feed pattern connected to the first feed via, a first antenna pattern configured to be coupled to the first feed pattern and transmit/receive an RF signal of a first frequency bandwidth, a second antenna pattern connected to the second feed via and configured to transmit/receive an RF signal of a second frequency bandwidth, and a third antenna pattern disposed between the first antenna pattern and the second antenna pattern, and overlapping the first antenna pattern and the second antenna pattern.

An electronic device is provided, which includes a display unit included in a first housing; a second housing; and a hinge part configured to couple the first housing and the second housing. The display unit includes a first PCB; a first antenna pattern at least partially disposed at a first side surface of the first housing adjacent to the hinge part; a conductive member electrically connected to the first antenna pattern; and a first conductive plate electrically connected to at least a portion of the conductive member. The second housing includes a second conductive plate electrically connected to the first conductive plate; a third conductive plate electrically connected to the second conductive plate; and a second PCB at which a ground electrically connected to the third conductive plate is disposed.

An electronic device is provided, which includes a display unit included in a first housing; a second housing; and a hinge part configured to couple the first housing and the second housing. The display unit includes a first PCB; a first antenna pattern at least partially disposed at a first side surface of the first housing adjacent to the hinge part; a conductive member electrically connected to the first antenna pattern; and a first conductive plate electrically connected to at least a portion of the conductive member. The second housing includes a second conductive plate electrically connected to the first conductive plate; a third conductive plate electrically connected to the second conductive plate; and a second PCB at which a ground electrically connected to the third conductive plate is disposed.

An antenna device comprising a first antenna, a second antenna and a circuit board. The first antenna includes a first insulating layer, a first signal-feeding line and two first grounding lines. The first signal-feeding line is disposed on a first surface of the first insulating layer. The first grounding lines are disposed on a second surface of the first insulating layer. The second antenna includes a second insulating layer, a second signal-feeding line and two second grounding lines. The second signal-feeding line is disposed on a first surface of the second insulating layer. The second grounding lines are disposed on a second surface of the second insulating layer. The first insulating layer and the second insulating layer intersect at about 90 degrees. The first and second antennas are disposed on a first surface of the circuit board. The first axis and the second axis are adjacent and substantially parallel.