Abstract: The disclosed systems, structures, and methods are directed to antennas for integration with a display structure which has a plurality of pixels arranged in pixel rows with an inter-pixel spacing, and a feeding line located in the inter-pixel spacing. The display structure also has an antenna which comprises a slotted waveguide and a substrate. The slotted waveguide is located in the inter-pixel spacing and defines a plurality of slots configured to radiate electromagnetic waves. The substrate is attached to the slotted waveguide and is located between the feeding line and the slotted waveguide. The antenna may also include a plurality of slotted waveguides superposing on different feeding lines of the display structure.

Abstract: There are disclosed an electrically tunable metasurface and a method for modulating propagation characteristics of an incident plane wave. The electrically tunable metasurface comprising: i) a plurality of scatterer rings, each one of the plurality of scatterer rings including bow-tie radiator elements, the bow-tie radiator elements in a corresponding scatterer ring having a same geometric configuration; and ii) a plurality of electrodes, each electrode being configured to provide a biasing voltage to the corresponding scatterer ring. The method comprising: i) receiving, by an electrically tunable metasurface, the incident plane wave; and ii) modulating the propagation characteristics of the incident plane wave by providing specific biasing voltage to the corresponding scatterer rings.

Abstract: Various graphene-based photodetectors are disclosed. An example photodetector device may include: a substrate; a first antenna component fabricated on the substrate, the first antenna component comprising one or more antenna electrodes; a second antenna component fabricated on the substrate, the second antenna component comprising one or more antenna electrodes; a source region coupled to the first antenna component and the substrate; and a drain region coupled to the second antenna component and the substrate; wherein the one or more antenna electrodes in the first antenna component and the second antenna component are made of graphene.

Abstract: Various graphene-based photodetectors are disclosed. An example photodetector device may include: a substrate; a first antenna component fabricated on the substrate, the first antenna component comprising one or more antenna electrodes; a second antenna component fabricated on the substrate, the second antenna component comprising one or more antenna electrodes; a source region coupled to the first antenna component and the substrate; and a drain region coupled to the second antenna component and the substrate; wherein the one or more antenna electrodes in the first antenna component and the second antenna component are made of graphene.

Abstract: Radio Frequency (RF) signal antenna devices and MIMO antenna portion arrays including the RF signal antenna devices are described. An antenna device includes a radiator that functions both as a first antenna and as a second antenna, a ground terminal directly connected to the radiator between a first end and a second end of the radiator, a first feed terminal for the first antenna, directly connected to the radiator at a first feed point between the first end of the radiator and the ground terminal; and a second feed terminal for the second antenna, directly connected to the radiator at a second feed point between the second end of the radiator and the ground terminal.

Abstract: The disclosed systems, structures, and methods are directed to antennas for integration with a display structure which has a plurality of pixels arranged in pixel rows with an inter-pixel spacing, and a feeding line located in the inter-pixel spacing. The display structure also has an antenna which comprises a slotted waveguide and a substrate. The slotted waveguide is located in the inter-pixel spacing and defines a plurality of slots configured to radiate electromagnetic waves. The substrate is attached to the slotted waveguide and is located between the feeding line and the slotted waveguide. The antenna may also include a plurality of slotted waveguides superposing on different feeding lines of the display structure.

Abstract: A transparent antenna-integrated touch sensor device that can be used in touch screens and portable mobile communication devices such as tablets and mobile phones. The touch sensor device includes an electromagnetically conductive element, a touch sensor controller configured to operate the electromagnetically conductive element as a touch sensor, and an antenna controller configured to operate the electromagnetically conductive element as an antenna. The electromagnetically conductive element is operated as the touch sensor function or the antenna function at different times, and not simultaneously. The electromagnetically conductive element can be arranged as a transparent conductive mesh, the strands of the conductive mesh being of a thickness so as to appear transparent.

Abstract: Radio Frequency (RF) signal antenna devices and MIMO antenna portion arrays including the RF signal antenna devices are described. An antenna device includes a radiator that functions both as a first antenna and as a second antenna, a ground terminal directly connected to the radiator between a first end and a second end of the radiator, a first feed terminal for the first antenna, directly connected to the radiator at a first feed point between the first end of the radiator and the ground terminal; and a second feed terminal for the second antenna, directly connected to the radiator at a second feed point between the second end of the radiator and the ground terminal.

Abstract: An antenna and an MIMO antenna system are described. At least one antenna secured to a housing of a device. The antenna has a size of ¼ wavelength of a central frequency of the antenna and body, the ground pad and the feed pad of the antenna have an impedance matching an RF communications circuit. A plurality of the antennas may be arranged in the housing to form a MIMO antenna system.

Abstract: A mobile device with tri-band antennas incorporated into a metal back side thereof is provided. The device comprises: a back side comprising a face and opposing ends; an edge extending from the face: a conducting central portion; antennas located at the opposing ends, each of the antennas electrically separated from the conducting central portion, and each comprising: a first respective radiating arm located at least partially on the face, and at least two further respective radiating arms extending from the first respective radiating arm, the at least two further respective radiating arms located on the edge, the radiating arms configured to resonate in at least three frequency ranges; one or more antenna feeds connected to each of the antennas; and, a switch configured to select one or more of the antennas for operation.

Abstract: Embodiments are directed to a balun structure comprising: a monopole antenna, and a microstrip coupled to the monopole antenna and comprising a ground plane modified to include at least two arms. Embodiments are directed to a balun structure comprising: a monopole antenna, and a microstrip coupled to the monopole antenna using a stepwise tapered microstrip feed.

Abstract: A device is set forth, comprising: a metallic back cover having interior and exterior portions; a chassis disposed on the interior portion of said metallic back cover for mounting components; a metallic edge ring surrounding said metallic back cover and said chassis; a gap extending through the exterior portion of the back cover and through the edge, for defining one dimension of an antenna conducting plane; a ground plane covering the chassis such that said antenna conducting plane and ground plane wrap around the chassis and components mounted thereon; an antenna feed extending through the ground plane to the antenna conducting plane; and a shorting pin connecting the ground plane to the antenna conducting plane.

Abstract: In some aspects, an antenna system for a mobile device includes a multi-feed structure and a main antenna structure. The feeds reside on a substantially planar surface of a substrate. Each of the feeds has a first end connected to at least one of the other feeds and a second end connected to a connector. The main antenna structure extends from the substantially planar surface and is connected to the connector.

Abstract: An electronic device includes a display, a plurality of antennae arranged and constructed to emit a signal and to receive backscatter from the signal, and a processor operably coupled to the antennae to utilize the received backscatter to detect location and at least one of size and shape of an object spaced from the display.

Abstract: A method includes utilizing transmitters and receivers, performing detection of objects spaced from an electronic device, when an object that is spaced from the electronic device is detected, continuing performing detection of objects, when no object is detected, discontinuing performing detection of objects, and utilizing touch sensors of the touch-sensitive display, performing touch detection.

Abstract: A device is set forth, comprising: a metallic back cover having interior and exterior portions; a chassis disposed on the interior portion of said metallic back cover for mounting components; a metallic edge ring surrounding said metallic back cover and said chassis; a gap extending through the exterior portion of the back cover and through the edge, for defining one dimension of an antenna conducting plane; a ground plane covering the chassis such that said antenna conducting plane and ground plane wrap around the chassis and components mounted thereon; an antenna feed extending through the ground plane to the antenna conducting plane; and a shorting pin connecting the ground plane to the antenna conducting plane.

Abstract: A mobile device with tri-band antennas incorporated into a metal back side thereof is provided. The device comprises: a back side comprising a face and opposing ends; an edge extending from the face: a conducting central portion; antennas located at the opposing ends, each of the antennas electrically separated from the conducting central portion, and each comprising: a first respective radiating arm located at least partially on the face, and at least two further respective radiating arms extending from the first respective radiating arm, the at least two further respective radiating arms located on the edge, the radiating arms configured to resonate in at least three frequency ranges; one or more antenna feeds connected to each of the antennas; and, a switch configured to select one or more of the antennas for operation.

Abstract: According to embodiments described in the specification, a method and mobile electronic device are provided for tuning an antenna. The mobile electronic device comprises an electrical ground member supporting at least one antenna; a housing containing the electrical ground member and having a conductive ring defining the perimeter of the housing; and a conductive tuning member disposed between the conductive ring and the electrical ground member, for transforming an impedance between the electrical ground member and the conductive ring; wherein the conductive tuning member is connected to the conductive ring by a first short, and to the electrical ground member by a second short.

Abstract: A method includes detecting a first touch at a first location, and a second touch at a second location, on a touch-sensitive display of an electronic device. In response to detecting the first and second touches, a first section of a virtual keyboard having a first boundary associated with the first location and a second section of the virtual keyboard having a second boundary associated with the second location are displayed on the touch-sensitive display.

Abstract: Embodiments are directed to a transition structure for interfacing an integrated circuit chip and a substrate, comprising: a co-planar waveguide (CPW) structure formed based on ground-signal-ground (GSG) pads on the integrated circuit chip, a grounded co-planar waveguide (CPWG) structure coupled to the GSG pads, and a microstrip coupled to the CPWG structure.