According to an embodiment of the present invention, an electronic device comprises: a foldable housing which comprises a hinge structure, a first housing structure connected to the hinge structure and including a first surface facing in a first direction, a second surface facing in a second direction that is opposite to the first direction, and a first side member that encompasses at least a portion of a space between the first and second surfaces and includes at least one first conductive part, and a second housing structure connected to the hinge structure, including a third surface facing in a third direction, a fourth surface facing in a fourth direction that is opposite to the third direction, and a second side member that encompasses at least a portion of a space between the third and fourth surfaces and includes at least one second conductive part, and which is folded with the first housing structure around the hinge structure, wherein the first surface faces the third surface in a folded state and the third direction is the same as the first direction in an unfolded state; a flexible display extending from the first surface to the third surface; and a wireless communication circuit electrically connected to the at least one second conductive part and configured to transmit and/or receive a signal having a specified frequency, wherein the at least one first conductive part and the at least one second conductive part may be electrically connected in the folded state. Other various embodiments may be possible.

An antenna system can include a ground plane and a driven element spaced apart from the ground plane. The antenna system can include a parasitic element disposed proximate to the driven element. The parasitic element can be coupled to the ground plane by a first coupling and a second coupling. The second coupling can be independent from the first coupling. For instance, the first coupling can include one or more tunable components. The second coupling can fix the parasitic element to the ground plane.

A communication system utilizing reconfigurable antenna systems is described where beam steering and null forming techniques are incorporated to limit the region or volume available for communication with client devices. The communication system described restricts communication to defined or desired area and degrades signal strength coverage outside of a prescribed region. An algorithm is used to control the antenna system to monitor and control antenna system performance across the service area. This antenna system technique is applicable for use in communication systems such as a Local Area Network (LAN), cellular communication network, and Machine to Machine (M2M).

An antenna array for a liquid crystal display able to function without a phase shifter includes at least two antenna units, each with an antenna module and a controlling circuit. The antenna module is at the side of a first substrate, a grounding layer, a feeding portion, a second substrate, and a liquid crystal layer also being included as a stack. The grounding layer and the feeding portion are on sides of the second substrate. The controlling circuit controls rotation of liquid crystal molecules of the liquid crystal layer therein to change a dielectric constant between the grounding layer and the antenna. The operating frequency of each antenna unit is thereby changed and radiation beam or pattern of the antenna array is thereby adjusted.

A steerable beam antenna includes a plurality of semiconductor chips arranged along a longitudinal axis. Each of the chips has a ground plane on its upper surface, and is doped to form an array of semiconductor switches arranged along the longitudinal axis. A corresponding array of scattering elements, each having a first leg and a second leg, is mounted on each chip along the longitudinal axis. A first electrode of each switch is configured for connection to a control circuit, a second electrode is connected to the ground plane, and a third electrode is connected to the first leg of one of the array of scattering elements, the second leg of which is connected to the ground plane. A dielectric element is mounted on the antenna chips along the longitudinal axis above the arrays of switches and scattering elements and is separated from the scattering elements by an air gap.

Disclosed is an electronic device. The electronic device according to an embodiment includes a plurality of antennas, and a communication circuit electrically connected with the plurality of antennas. The communication circuit includes a plurality of circuits receiving a signal in a first band and is configured to simultaneously receive the signal in the first band through two or more circuits of the plurality of circuits from two or more antennas, which are positioned adjacent to each other, from among the plurality of antennas. The number of the plurality of antennas is the same as the number of plurality of circuits.

The present disclosure provides systems and methods relating to sensing the presence of a lifeform. In particular, the present disclosure provides systems and methods for detecting the presence of a lifeform in a building or room using dynamic metasurface aperture (DMA), which overcome many limitations of currently available radio frequency (RF) or infrared (IR)-based systems.

An antenna structure applied in a wireless communication device includes a metal frame. The wireless communication device includes at least one electronic component. The metal frame includes a substrate. The substrate includes an antenna. The antenna includes a feed portion and a gap. The feed portion spans the gap. The metal frame is spaced from the electronic component. A clearance is formed between the metal frame and the electronic component.

A metasurface device includes a ground structure able to have a ground plane function, the ground structure being able to be alternately in an insulating state, wherein it prevents the propagation of the surface wave over the front surface of a substrate so as to prevent the antenna element from radiating, and in a conductive state, wherein the ground structure has the ground plane function, allowing the propagation of the surface wave over the front surface of the substrate from the emission/reception device to the conductive patches, or vice versa, the ground structure being able to change from the insulating state to the conductive state through illumination of the ground structure at a wavelength called a switching wavelength.

An antenna structure applied in a wireless communication device includes a frame, a first feed portion, a second feed portion, and a ground portion. The frame defines at least a first gap and a second gap. The first gap and the second gap collectively divide the frame into a first radiation portion and a second radiation portion. The first feed portion is electrically connected to the first radiation portion and a first signal feed point for feeding currents and signals to the first radiation portion. The second feed portion is electrically connected to the second radiation portion and a second signal feed point for feeding currents and signals to the second radiation portion. When the first radiation portion and the second radiation portion supply currents, respectively, the first radiation portion and the second radiation portion generate radiation signals in at least one same frequency band.