An antenna device and a beam direction adjustment method are provided. The antenna device includes an antenna element, a metal element, and a substrate. The antenna element and the metal element are separately disposed on the substrate at a preset distance. A ground point of the metal element is fastened on a pad of the substrate, and the ground point is on a side of the metal element close to the antenna element. A first reverse current opposite to an antenna current generated by the antenna element is obtained through coupling on the side of the metal element close to the antenna element, and a second reverse current opposite to a substrate current generated by the substrate is obtained through coupling at a lower part of the metal element that is in contact with the substrate.

The disclosed structures and methods are directed to antenna systems configured to transmit and receive a wireless signal in and from different directions. An antenna structure comprises a pair of horizontal-polarization (HP) antenna units forming a first parallel-plate waveguide. One of the HP antenna units and a base unit form a second parallel-plate waveguide. The antenna further comprises a pair of vertical-polarization (VP) antenna units each located in one of the first and second parallel-plate waveguides. Each HP antenna unit comprises inverted F antennas (IFAs) configured to radiate a radio-frequency (RF) waves that are horizontally polarized. Each VP antenna unit comprises VP excitation elements configured to radiate the RF waves that are vertically polarized. A method for manufacturing of the antenna structure is also disclosed.

The disclosed structures and methods are directed to antenna systems configured to transmit and receive a wireless signal in and from different directions. An antenna structure comprises a pair of horizontal-polarization (HP) antenna units forming a first parallel-plate waveguide. One of the HP antenna units and a base unit form a second parallel-plate waveguide. The antenna further comprises a pair of vertical-polarization (VP) antenna units each located in one of the first and second parallel-plate waveguides. Each HP antenna unit comprises inverted F antennas (IFAs) configured to radiate a radio-frequency (RF) waves that are horizontally polarized. Each VP antenna unit comprises VP excitation elements configured to radiate the RF waves that are vertically polarized. A method for manufacturing of the antenna structure is also disclosed.

A wireless communication device is provided that has an RFIC element including first and second terminal electrodes, a first radiation electrode connected to the first terminal electrode of the RFIC element, a second radiation electrode disposed in the same layer as the first radiation electrode independently of the first radiation electrode and connected to the second terminal electrode of the RFIC element, and a back surface electrode disposed oppositely to the second radiation electrode at a distant and connected to the second radiation electrode. Moreover, an area of a portion of the back surface electrode opposite to the first radiation electrode is smaller than an area of a portion of the back surface electrode opposite to the second radiation electrode.

A wireless communication device is provided that has an RFIC element including first and second terminal electrodes, a first radiation electrode connected to the first terminal electrode of the RFIC element, a second radiation electrode disposed in the same layer as the first radiation electrode independently of the first radiation electrode and connected to the second terminal electrode of the RFIC element, and a back surface electrode disposed oppositely to the second radiation electrode at a distant and connected to the second radiation electrode. Moreover, an area of a portion of the back surface electrode opposite to the first radiation electrode is smaller than an area of a portion of the back surface electrode opposite to the second radiation electrode.

An antenna comprising: a radio frequency (RF) coupler; a transceiver communicatively coupled to the RF coupler; a laser configured to generate a plurality of femtosecond laser pulses so as to create, without the use of high voltage electrodes, a laser-induced plasma filament (LIPF) in atmospheric air, wherein the laser is operatively coupled to the RF coupler such that RF energy is transferred between the LIPF and the RF coupler; and wherein the laser is configured to modulate a characteristic of the laser pulses at a rate within the range of 1 Hz to 1 GHz so as to modulate a conduction efficiency of the LIPF thereby creating a variable impedance LIPF antenna.

An antenna with pin header is provided, which may include a substrate, a feed point, a radiator and a metallic pin header. The feed point may be disposed on the substrate. The radiator may be printed on the substrate and connected to the feed point. The metallic pin header may penetrate through the radiator and the substrate. The metallic pin header may be connected to the feed point via the radiator, and the radiator and the metallic pin header may have a common feedline, whereby the metallic pin header can enhance the gain pattern, in the direction which the metallic pin header points in, of the radiator.

The invention relates to a surface wave antenna system, comprising at least one antenna that is electrically short in the vertical plane, with vertical or elliptic polarization and emitting a radiation, said antenna being linked to a conducting medium exhibiting a substantially horizontal surface. The antenna system being characterized in that it comprises furthermore at least one parasitic wire extending in a direction substantially parallel to the surface of the conducting medium, electrically insulated from each antenna, and arranged in the vicinity of at least one antenna in such a way as to be able to radiate by virtue of the current induced by said radiation of this antenna. The invention makes it possible to combine the resultants of each radiating element in such a way as to control the radiation pattern in the vertical plane.

The invention relates to a surface wave antenna system, comprising at least one antenna that is electrically short in the vertical plane, with vertical or elliptic polarization and emitting a radiation, said antenna being linked to a conducting medium exhibiting a substantially horizontal surface. The antenna system being characterized in that it comprises furthermore at least one parasitic wire extending in a direction substantially parallel to the surface of the conducting medium, electrically insulated from each antenna, and arranged in the vicinity of at least one antenna in such a way as to be able to radiate by virtue of the current induced by said radiation of this antenna. The invention makes it possible to combine the resultants of each radiating element in such a way as to control the radiation pattern in the vertical plane.

An electronic device may be provided with wireless circuitry. The wireless circuitry may include one or more antennas and transceiver circuitry such as centimeter and millimeter wave transceiver circuitry (e.g., circuitry that transmits and receives antennas signals at frequencies greater than 10 GHz). The antennas may be arranged in a phased antenna array. The phased antenna array may be formed on a dielectric substrate and may include one or more indirectly-fed microstrip dipole antennas. Conductive traces forming dipole antenna resonating elements or parasitic resonating elements for the dipole antennas in the phased antenna array may be embedded within or formed on an upper surface of the dielectric substrate. The phased antenna array may include both dipole antennas and patch antennas. Dipole antennas may be interposed between adjacent patch antennas or formed next to patch antennas.