Disclosed is an array antenna comprising a plurality of array elements. The plurality of array elements are formed as a coupler including a central element and peripheral elements configured to surround the central element; each of the central element and the peripheral elements is formed as a waveguide; and the peripheral elements are excited in higher-order modes using coupling slots to form a beam pattern through an electric field distribution of the central element and the peripheral elements.

A multi-antenna module includes, on or in the dielectric substrate, a first radiation element, a second radiation element that operates at a frequency band lower than that of the first radiation element, and a ground plane. A first feed line and a second feed line are provided on or in the dielectric substrate. A first switch element switches between a first state in which a signal is supplied to the second radiation element and a second state including at least one of a state in which the second radiation element is connected to the ground plane with terminal impedance interposed therebetween, a state in which the second radiation element is in a floating state with respect to the second feed line and the ground plane, and a state in which the second radiation element is short-circuited to the ground plane.

An electronic device is provided. The electronic device may comprise a housing comprising: a front plate facing a first direction, a back plate facing a second direction opposite to the first direction, and a side surface which surrounds the front plate and the back plate, wherein the front plate includes a screen area and a bezel area; a display exposed through the screen area of the front plate; a first circuit board disposed between the display and the back plate and including a first surface facing the display and a second surface facing the back plate; a first antenna array overlaid on the bezel area in the first surface; a second antenna array disposed on the second surface; and a wireless communication circuit disposed on the first circuit board and electrically connected with the first antenna array and the second antenna array, wherein the wireless communication circuit is configured to: form a beam which has directionality in the first direction using the first antenna array and form a beam which has directionality in the second direction using the second antenna array.

The present disclosure relates to systems for providing wireless power to implanted devices. Consistent with some embodiments, an antenna system for providing wireless power to an implanted device includes a primary antenna loop and at least one parasitic antenna loop. The primary antenna loop is configured to receive power from a power source and radiate the power toward the implanted device. The at least one parasitic antenna loop is configured to absorb a portion of the radiated power and to reradiate the absorbed power toward the implanted device. The power radiated by the primary antenna loop and the power reradiated by the at least one parasitic antenna loop form a wireless power transmission pattern broadly distributed at the surface of the individual's skin and becomes more focused as it travels into the individual's body toward the implanted device. The broad distribution pattern at the surface of the skin reduces the specific absorption rate of the transmission while focusing the transmission as it toward the implanted device improves the antenna system's transfer efficiency.

The disclosure concerns wireless communication systems, including, antenna systems and related methods, which are each directed to utilizing one or more multi-mode antennas for the purpose of varying a radiation pattern characteristic thereof to enhance network security and communication link between an access point and one or more client devices on a network.

A steerable beam antenna includes a feed line and first and second arrays of switchable scatterers along opposite sides of the feed line. The first array scatters an electromagnetic wave propagating through the feed line to form a first beam portion with a first polarization, and the second array scatters the propagating wave to form a second beam portion with a second polarization orthogonal to the first polarization. Each scatterer in the first and second arrays is switchable between a high state and a low state, the high state scatterers and the low-state scatterers in each of the first and second arrays defining a periodic pattern. The scatterers in the first and second arrays are switchable to shift the pattern of scatterers in one of the arrays relative to the pattern in the other array by a selectable period shift that yields a desired polarization for the beam.

An electronic device is provided. The electronic device may comprise a housing comprising: a front plate facing a first direction, a back plate facing a second direction opposite to the first direction, and a side surface which surrounds the front plate and the back plate, wherein the front plate includes a screen area and a bezel area; a display exposed through the screen area of the front plate; a first circuit board disposed between the display and the back plate and including a first surface facing the display and a second surface facing the back plate; a first antenna array overlaid on the bezel area in the first surface; a second antenna array disposed on the second surface; and a wireless communication circuit disposed on the first circuit board and electrically connected with the first antenna array and the second antenna array, wherein the wireless communication circuit is configured to: form a beam which has directionality in the first direction using the first antenna array and form a beam which has directionality in the second direction using the second antenna array.

A device for selectively reflecting an incident microwave signal or millimeter-wave signal includes multiple antennae disposed in an array. Each antenna has an input adapted to selectively receive a forward bias signal or a zero bias signal. The device also includes a diode disposed at each input of each antenna. The device also includes a switching device connected to each input, and configured to selectively apply a forward bias or zero bias to each of the diodes. In forward bias, each of the antennae detects the incident microwave signal or millimeter wave signal, and in zero bias, each of the antennae reflects the incident microwave signal or millimeter wave signal.

Examples disclosed herein relate to systems and methods for configuring and operating an antenna system. In accordance with various embodiments, the disclosed system and methods utilize amplitude tapering of an antenna array to reduce side lobe levels while optimizing main lobe gain. An antenna array is configured to increase a gain differential by reducing side lobe amplitude. The array of radiating elements is arranged to have a majority of elements at the center of the array with fewer elements on the edges.

An antenna for inductively transmitting information and/or energy, in particular a hearing aid antenna, has a foil-like antenna base body that has a central coil core section that holds a first coil, and outer antenna sections arranged opposite one another on both sides of the central coil core section. The outer antenna sections respectively have an edge-side coil core section that adjoins the central coil core section and holds a second coil. The outer antenna sections are at an angle relative to the central coil core section. There is also described a device, in particular a hearing device, which is preferably a hearing aid, with such an antenna.