Abstract: An antenna system has a two-dimensional field of view, yet can be implemented on a surface, such as on electronic or photonic integrated circuits. The antenna system includes an array of antennas disposed in a predetermined non-linear pattern and a two-dimensional beamforming network (BFN). The antenna system can be steered/selectively beamformed in two dimensions through beam port selection. The beamforming network is disposed entirely on a single first surface. The beamforming network has a one-dimensional array-side interface disposed on the first surface and a one-dimensional beam-side interface disposed on the first surface. The antennas of the array of antennas are individually communicably coupled to the array-side interface. Segments of the beam-side interface map to respective pixels in the two-dimensional field of view.

Abstract: Reflectarray antenna elements, reflectarrays, and a method of operating an antenna element are described.

Abstract: According to various embodiments, systems and methods for suppressing grating lobes in a traveling-wave antenna system are disclosed. An apparatus can include a traveling-wave antenna array comprising a plurality of adjacent traveling-wave antennas. The apparatus also can include a phase diversity feed coupled to the traveling-wave antenna array. The phase diversity feed can be configured to provide phase diverse input to two or more of the plurality of adjacent traveling-wave antennas.

Abstract: Radio devices for wireless transmission including an integrated adjustable mount allowing mounting to a pole or stand and adjustment of the angle of the device (e.g., the altitude). The device may include a compact array antenna having a high gain configured to operate in, for example, the 5.15 to 5.85 GHz band and/or the 2.40-2.48 GHz band. The antenna emitters may be arranged in a separate plane from a plane containing the antenna feed connecting the emitting elements and also from a ground plane. The antenna array may be contained within a protective weatherproof housing along with the radio control circuitry.

Abstract: A nanosatellite or drone, including an antenna; a dielectric waveguide coupled to the antenna, the waveguide comprising at least one of a slot or a taper and the waveguide (1) focusing electromagnetic radiation incident from free space into the waveguide and (2) waveguiding the electromagnetic radiation to the antenna. Also disclosed is a system for deploying a support structure, or device having electromagnetic functionality, including one or more bags each having a wall comprising a membrane; one or more conduits each having an outlet transferring fluid into the one or more of the bags in fluidic communication with the conduits, wherein the fluid pressurizes each of the one or more bags and expands the membrane so as to deploy and form each of the one or more bags into a support or the device having electromagnetic functionality.

Abstract: An antenna apparatus includes first dipole antenna patterns, feed lines, a first ground plane, and a first blocking pattern. The feed lines are connected to corresponding ones of the first dipole antenna patterns. The first ground plane is disposed on a side of the first dipole antenna patterns and spaced apart from each of the first dipole antenna patterns. The first blocking pattern, connected to and extending from the first ground plane, is disposed between adjacent ones of the first dipole antenna patterns.

Abstract: A windshield, vehicle and antenna assembly for the vehicle is disclosed. The antenna assembly includes an antenna and a signal coupler. The antenna is embedded within the windshield of the vehicle. The antenna is configured to receive signals over a first frequency band and a second frequency band separated from the first frequency band. The signal coupler electromagnetically couples to the antenna through the windshield.

Abstract: An antenna includes a first radiating element configured to emit first electromagnetic radiation in response to at least one feed signal having a frequency within a first radio frequency (RF) band. A director is provided, which is positioned forwardly of the first radiating element, and in a path of the first electromagnetic radiation. The director includes first and second passive impedance elements that provide respective first and second frequency-dependent reactances to first currents induced within the director in response to the first electromagnetic radiation. The first and second passive impedance elements may include a first inductor and a first capacitor, which are electrically coupled in series. The director may also be configured to include a plurality of passive impedance elements that are connected within an impedance loop containing a second LC circuit in series with a first LC circuit.

Abstract: Examples disclosed herein relate to a radiating structure. The radiating structure has a transmission array structure having a plurality of transmission paths, with each transmission path having a plurality of slots. The radiating structure also has a radiating array structure of a plurality of radiating elements, with each radiating element corresponding to at least one slot from the plurality of slots, and at least one radiating element from the plurality of radiating elements comprising an integrated reactance control device. The radiating array structure is positioned proximate the transmission array structure.

Abstract: A base station antenna includes a first antenna having first and second spaced-apart columns of first radiating elements therein, which are configured to operate within a first frequency band. An active antenna system (AAS) is provided, which is configured to operate within a second, typically higher, frequency band. The AAS includes a second antenna within a space between the first and second columns of first radiating elements. These first radiating elements may include tilted feed stalks which support higher integration by enabling the first radiating elements to overhang at least a portion of the second antenna.

Abstract: A radio frequency and electromagnetic emission shield employed on wireless personal and portable electronic devices, containing one or more layers of radio frequency (RF) or electromagnetic (EM) screening material, shielding the user from harmful RF or EM radiation, or a redirection antenna that receives all RF signals, and redirects those signals away from the user. The RF emission shield may be contained within a plurality of outer layers, providing a secure fit to a wireless electronic device and an outer layer providing an easy grip for the user.

Abstract: A multi-band antenna system that includes a first antenna array and a second antenna array. The first antenna array includes a plurality of lens sets, each including a lens and feed element(s) configured to transmit and/or receive electromagnetic signals that pass through the lens. The second antenna array includes a plurality of antenna elements, each disposed between two of the lenses of the first array.

Abstract: A dual band antenna and an electronic device are provided. The dual band antenna includes a feed end, an annular connection end, a metal screw, a first extension path, a second extension path, a third extension path, and a grounding part. The annular connection end has an opening and is connected to the feed end. The metal screw has a threaded stud passing through the opening, so that the metal screw is electrically connected to the annular connection end. The feed end, the first extension path, the second extension path, the third extension path, and the grounding part are sequentially connected to each other. The dual band antenna is configured to have a monopole antenna and a loop antenna, so that the dual band antenna has a wide operating frequency band, and the monopole antenna operates at 3.6 GHz and the loop antenna operates at 4.6 GHz.

Abstract: A straddle type vehicle comprises a front antenna configured to be capable of transmitting/receiving a wireless signal of a predetermined frequency band and arranged closer to a front side than a seating portion on which a rider can sit, and a rear antenna configured to be capable of transmitting/receiving a wireless signal of a predetermined frequency band and arranged closer to a rear side than the seating portion, the front antenna has directivity in the front side of the straddle type vehicle.

Abstract: An apparatus for space and terrestrial communication applications includes a Ka-band horn combined with a S-band cross-polarization cup. The S-band cross-polarization cup is placed around a neck of the Ka-band horn in a form of a collar.

Abstract: An electromagnetic phased array (100) is disclosed comprising a plurality of antenna elements (102), each antenna element (102) comprising at least three constituent antennae (104). A drive circuit (106) generates about an axis of each element (102) a radiation pattern that has a defined minima at or close to a null in at least one direction. The drive circuit (106) effects electronic steering of this minima through a range of angles around the axis of each antenna element (102) of the array (100) by appropriate setting of the vector currents associated with its constituent antennae (104). The axes of each of the antenna elements (102) are aligned in parallel with a central axis of the array (100) and at least a sub-set of the elements (102) lie substantially on a common helical surface. The elements (102) are spaced on this surface such that the array (100) has a substantially constant aperture.

Abstract: A liquid crystal phase shifter, a liquid crystal antenna, a communication apparatus, and a method for operating a liquid crystal phase shifter are provided. The liquid crystal phase shifter includes a microwave transmission structure and a phase adjustment structure opposite to each other, and a liquid crystal layer between the microwave transmission structure and the phase adjustment structure; wherein the phase adjustment structure comprises a plurality of phase adjustment units; the plurality of phase adjustment units are configured to change a dielectric constant of the liquid crystal layer according to a voltage applied to the phase adjustment units and a voltage applied to the microwave transmission structure, so as to adjust a phase of a microwave signal; and phase shift amounts adjusted by the plurality of phase adjustment units are different from each other.

Abstract: The invention relates to a manual actuating device for a phase shifter of a base station antenna. The device includes a support module having an elongated base body and a first and a second receiving portion which protrude from the base body and are spaced apart in a longitudinal direction of the base body; and a lead screw drive having a lead screw and a nut. The lead screw is rotatably supported in the first and the second receiving portion, and the nut is translationally movably installed on the lead screw. The device also includes an actuator rod connected to the nut and configured to actuate the phase shifter; and a manual operating part connected with the lead screw and configured to manually operate the lead screw to rotate the lead screw. The actuating device is simple and compact in structure and is easy to manufacture and install.

Abstract: A deployable membrane structure for an antenna comprises a membrane comprising a plurality of first regions of higher-stiffness material integrally connected via one or more second regions of lower-stiffness material, wherein the one or more second regions are formed from compliant material configured to permit the membrane to be folded into a collapsed configuration and subsequently unfolded into a deployed configuration, and are arranged so as to allow adjacent ones of the plurality of first regions to be folded so as to lie against one another. In some embodiments the membrane is formed of a composite material comprising a plurality of fibres in a compliant matrix, and the plurality of first regions comprise material with a higher fibre density than the one or more second regions. A deployable antenna comprising the deployable membrane structure is also disclosed.

Abstract: A base station antenna (BSA) includes a reflector having a main reflector surface thereon, which extends between first and second sidewalls thereof. First and second choke-within-a-choke assemblies are provided on first and second sides of the reflector, respectively. The first choke-within-a-choke assembly includes: a first relatively low-band choke defined on one side thereof by the first sidewall of the reflector, and a first relatively high-band choke contacting on two sides thereof a rear surface of the reflector and an inner surface of the first sidewall. The second choke-within-a-choke assembly includes: a second relatively low-band choke defined on one side thereof by the second sidewall of the reflector, and a second relatively high-band choke contacting on two sides thereof the rear surface of the reflector and an inner surface of the second sidewall.