An antenna module includes a first antenna layer, including at least one main radiation unit including at least two main radiation patches symmetrically arranged and spaced apart from each other and at least one feeder portion located at or corresponds to a gap between adjacent two of the main radiation patches; a second antenna layer, stacked with the first antenna layer and including a reference ground arranged opposite to the main radiation patches and at least one microstrip insulated from the reference ground; at least one first electrically conductive member, electrically connected to the main radiation patches and the reference ground; and at least one second electrically conductive member, with an end being electrically connected to the feeder portion and another end being electrically connected to another end of the microstrip. An end of the microstrip is electrically connected to a radio frequency transceiver chip.

An antenna module includes a first antenna layer, including at least one main radiation unit including at least two main radiation patches symmetrically arranged and spaced apart from each other and at least one feeder portion located at or corresponds to a gap between adjacent two of the main radiation patches; a second antenna layer, stacked with the first antenna layer and including a reference ground arranged opposite to the main radiation patches and at least one microstrip insulated from the reference ground; at least one first electrically conductive member, electrically connected to the main radiation patches and the reference ground; and at least one second electrically conductive member, with an end being electrically connected to the feeder portion and another end being electrically connected to another end of the microstrip. An end of the microstrip is electrically connected to a radio frequency transceiver chip.

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.

A method, apparatus and system with an autonomic, self-healing polymer capable of slowing crack propagation within the polymer and slowing delamination at a material interface.

A method, apparatus and system with an autonomic, self-healing polymer capable of slowing crack propagation within the polymer and slowing delamination at a material interface.

Provided is an electronic device having an antenna according to an embodiment. The electronic device may comprise a first and a second ground plane arranged on different layers of a multi-layer substrate and configured to be connected to each other through vias spaced a predetermined distance apart from each other. The electronic device may comprise a signal line arranged on the same plane as the first ground plane which is disposed at the upper side among the first and the second ground plane. The electronic device may comprise a radiator configured to be electrically connected to the signal line and emit a signal. The first ground plane may be disposed at only one region of one side region and the other side region of the signal line in a predetermined section.

Provided is an electronic device having an antenna according to an embodiment. The electronic device may comprise a first and a second ground plane arranged on different layers of a multi-layer substrate and configured to be connected to each other through vias spaced a predetermined distance apart from each other. The electronic device may comprise a signal line arranged on the same plane as the first ground plane which is disposed at the upper side among the first and the second ground plane. The electronic device may comprise a radiator configured to be electrically connected to the signal line and emit a signal. The first ground plane may be disposed at only one region of one side region and the other side region of the signal line in a predetermined section.

The present disclosure relates to stripline cavity structures. One example stripline cavity structure is disposed on a back surface of a reflecting plate, and first avoidance holes are provided on the reflecting plate. The stripline cavity structure includes at least one second conductor strip, the stripline cavity structure is disposed on the back surface of the reflecting plate, and the second conductor strip passes through the first avoidance holes to be connected to the first conductor strip in a microstrip circuit.

The present disclosure relates to stripline cavity structures. One example stripline cavity structure is disposed on a back surface of a reflecting plate, and first avoidance holes are provided on the reflecting plate. The stripline cavity structure includes at least one second conductor strip, the stripline cavity structure is disposed on the back surface of the reflecting plate, and the second conductor strip passes through the first avoidance holes to be connected to the first conductor strip in a microstrip circuit.