Abstract: Aspects of the subject disclosure may include, for example, an antenna system that includes a selector and a dielectric antenna array. The selector is coupled to a number of dielectric cores and selectively launches electromagnetic waves on a selected dielectric core of the dielectric cores. The selected dielectric core corresponds to one of the dielectric cores, and the electromagnetic waves propagate along the selected dielectric core without requiring an electrical return path. The dielectric antenna array is coupled to the dielectric cores and includes a number of dielectric antennas, wherein a dielectric antenna of the dielectric antennas transmits, in response to the electromagnetic waves received from the selected dielectric core, a controllable beam. Other embodiments are disclosed.

Abstract: An electromagnetic device includes: a dielectric structure having: a first dielectric portion, FDP, having a proximal end and a distal end, the FDP having a dielectric material other than air; and a second dielectric portion, SDP, having a proximal end and a distal end, the proximal end of the SDP being disposed proximate the distal end of the FDP, the SDP having a dielectric material other than air; and wherein the dielectric material of the FDP has an average dielectric constant that is greater than the average dielectric constant of the dielectric material of the SDP.

Abstract: Embodiments of the invention include a base station that includes a central transceiver unit (CTU) having a plurality of transceiver cores and a substrate. A printed circuit board (PCB) supports the substrate and at least one antenna unit is coupled to the PCB with at least one of a cable and a waveguide. The at least one antenna unit transmits and receives communications at a frequency of approximately 4 GHz or higher.

Abstract: A method for utilising an array of independently controllable dielectric lenses for radio signal to allow a single antenna to be focussed on one location with a highly directive beam or on more than one location thus enable radio links to be formed with multiple locations. Within the array, each lens will consist of a shaped piece of dielectric material that can be independently, or in groups, pointed in such a direction as to change the direction of the radio signals passing through the lens. The lens will have a shape equivalent to a converging lens which may be a convex shape. Other forms of converging lens may be implemented save space and material. The antenna will have a low gain, wide area of reception and may be implemented as a planar metal antenna or as a group of planar antennas in an array. This invention provides a lightweight system for providing high gain antenna performance without the need for a complex antenna array system or the need for multiple transceiver electronics.

Abstract: A device includes a circuit board having thereon, a controlling component, a first radar chip and a second radar chip. The first radar chip includes a first radar transmission antenna, a second radar transmission antenna and a first radar receiver antenna array. The second radar chip includes a second radar receiver antenna array. The controlling component can control the first radar chip and the second radar chip. The first radar transmission antenna can transmit a first radar transmission signal. The second radar transmission antenna can transmit a second radar transmission signal. The second radar chip is spaced from the first radar chip so as to create a virtual receiver antenna array between the first radar receiver antenna array and the second radar receiver antenna array.

Abstract: A multi-beam antenna includes: a focusing system having a concave mirror; a radiating device, which is intended for irradiating the concave mirror, includes a two-dimensional radiator array, is disposed at a distance from the concave mirror and covers the projection area of beams at this distance; and a beam forming system. The radiating device includes at least one sub-array of radiators which provides one beam in a set direction. For each such beam, the beam forming system provides, for each radiator in the corresponding sub-array, amplitude-time parameters of the signal being transmitted such as to form a non-planar wavefront, which is equidistant across the concave mirror to a planar wavefront of the beam, wherein the radiating surface of the radiator array is situated outside the region of self-intersection of the non-planar wavefronts.

Abstract: A sensing system for a vehicle includes a control and sensor disposed at the vehicle. The sensor includes a plurality of antennas, which includes transmitting antennas and receiving antennas. The plurality of antennas includes a two-dimensional antenna array having a rhombus grid arrangement of antennas. Outputs of the antennas are communicated to the control, and the control, responsive to the outputs of the antennas, determines the presence of one or more objects exterior the vehicle and within the field of sensing of the antennas.

Abstract: An element section includes at least one antenna element transmitting/receiving radio waves. Refracting sections refract unnecessary waves, which are radio waves emitted from the element section and traveling away from a detection area, in a rearward direction in which the unnecessary waves travel further than an antenna-formed surface having the at least one antenna element of the element section.

Abstract: A blood glucose tracking system and method measures emitted microwave energy transmitted to and accepted by blood vessels in a desired target area of a patient in order to determine, in real time and in vivo, appropriate blood glucose levels. A measurement unit comprises a transmitter operatively connected to an antenna to deliver energy towards appropriate subcutaneous blood vessels. The measurement unit determines an accepted energy power value in the blood vessels associated with the desired target area. This measurement energy power value is compared with a calibration value, and the difference is used to determine a resultant blood glucose value. The determined blood glucose value may further be acclimatized using additional sensed values compensating for biological and ambient factors relevant to the patient. The final determined blood glucose value can be displayed for reading and/or transmitted and stored for recording for further reference.

Abstract: A method for the manufacture of a dielectric resonator antenna (DRA) or array of DRAs, the DRA having: an electrically conductive ground structure; a plurality of volumes of dielectric materials disposed on the ground structure having N volumes, N being an integer equal to or greater than 3, disposed to form successive and sequential layered volumes V(i), i being an integer from 1 to N, wherein volume V(1) forms an innermost volume, wherein a successive volume V(i+1) forms a layered shell disposed over and at least partially embedding volume V(i), wherein volume V(N) at least partially embeds all volumes V(1) to V(N?1); and, a signal feed disposed and structured to be electromagnetically coupled to one or more of the plurality of volumes of dielectric materials. The method including molding at least one of the plurality of volumes of the dielectric material, or all of the volumes of the dielectric material.

Abstract: A reflector assembly including a truss engaging the first net at a first plurality of points along the first net perimeter edge and engaging a second net at a second plurality of points along the second net perimeter edge. A truss deployment assembly moves the truss between a truss stowed condition and a truss deployed condition, the truss in the truss deployed condition tensioning said first net or said second net to maintain a substantially flat or parabolic net outer surface. A reflector disposed at the first net sends or receives remote data.

Abstract: An antenna array system includes a feed antenna and circuit boards. Each circuit board has pickup antenna elements disposed on a curved edge portion of a first edge of the circuit board, radiating elements disposed on a second edge portion of the circuit board, and transmit receive modules disposed between the pickup elements and the radiating elements on the circuit board. The antenna array can be part of an active electronically scanned array (AESA) antenna assembly.

Abstract: Several embodiments of systems and methods are described for a compound structure consisting of a compact conformal surface-wave antenna feed structure attached to a conformal surface-wave antenna. The feed structure is an Artificial Impedance Surface (AIS) which takes as input an arbitrary source, converts it into a desired surface-wave waveform, which then feeds its output into the attached conformal surface-wave antenna for optimal radiation performance. The feed structure can be made up of several sizes and shapes of AIS metal patches and can produce plane isotropic as well as anisotropic surface-wave output. The surface-wave antenna can be a radiating hologram made up of the same AIS metallic patches as the feed structure and fabricated on the same dielectric substrate.

Abstract: Aspects of the subject disclosure may include, a communication device having a dielectric antenna, a radio housing, a hollow waveguide and an antenna stabilizer. The radio housing can enclose a transmitter that generates electromagnetic waves. The hollow waveguide can have a cavity therethrough to facilitate transmission of the electromagnetic waves to a feed point of the dielectric antenna for guidance of the electromagnetic waves without requiring an electrical return path, where the electromagnetic waves generate near-field wireless signals. The antenna stabilizer can facilitate coupling the hollow waveguide to the feed point of the dielectric antenna. Other embodiments are disclosed.

Abstract: Embodiments discussed herein refer to systems and structures for focusing dispersal of electromagnetic signals. Focusing of the electromagnetic signals is achieved by a reflective lens that is constructed from several extremely high frequency focusing layers. Each focusing layer can include an extremely high frequency focusing window that, collectively, define the geometry of a cavity backed reflective lens and its ability to focus electromagnetic signal dispersion.

Abstract: A radio frequency antenna uses an array of spherical lens and mechanically movable radio frequency (RF) elements along the surface of the spherical lens to provide cellular coverage for a narrow geographical area. The antenna includes at least two spherical lens, where each spherical lens has at least one associated element assembly. Each element assembly has a track that curves along the contour of the exterior surface of the spherical lens and along which a radio frequency (RF) element can move. The antenna also includes a phase shifter configured to adjust a phase of the signals produced by the RF elements. The antenna includes a control mechanism configured to enable a user to move the RF elements along their respective tracks, and automatically configure the phase shifter to modify a phase of the output signals from the elements based on the relative positions between the RF elements.

Abstract: The present invention relates to a metal-metal interdigitated photoconductive antenna that generates and/or detects terahertz waves, the photoconductive antenna comprising at least one substrate (1) and at least one electrode (2) on the front face of the substrate (1), wherein said photoconductive antenna comprises at least one layer (4) formed of a material reflective to terahertz waves, said layer (4) extending below the front face of the substrate (1) at a distance lower than the wavelength; and it comprises an interdigitated geometry on said front face of the substrate (1) comprising a first metallization layer of 5 nm Cr and 150 nm Au for the interdigitated electrodes (2), equally spaced by a distance ?, is made on said front face of the substrate (1); a 500 nm-thick layer of SiO2 (5) deposited over the first metallization layer; and a second metallic layer composed of metallic fingers (6) covering gaps with a periodicity double that of the distance ?.

Abstract: A deployable structure for use in establishing a reflectarray antenna is provided that includes a flexible reflectarray and a deployment structure that includes an endless pantograph for deploying the flexible reflectarray from a folded, undeployed state towards a deployed state in which the flexible reflectarray is substantially planar. In a particular embodiment, the deployment structure includes a plurality of tapes that engage the endless pantograph and are used to establish a positional relationship between the deployed reflectarray and another component of the reflectarray antenna.

Abstract: Provided is a metamaterial-based polarization converter in which a reception antenna and a transmission antenna are formed by using a metamaterial, to thus emit an incident non-polarized or polarized electromagnetic wave in an angle-converted polarization direction. The metamaterial-based electromagnetic wave polarization converter includes: a reception antenna made of a metamaterial and allowing incident electromagnetic waves to resonate at a surface of the reception antenna to generate a surface current; a transmission antenna at a rear side of the reception antenna, and made of an angle-converted metamaterial to thus allow the electromagnetic waves transferred from the reception antenna to resonate to then be emitted in a polarization direction; and a connector made of a conductive material that connects the reception antenna and the transmission antenna, to thereby transfer a surface current generated from the reception antenna to the transmission antenna.

Abstract: One embodiment describes a reflectarray antenna system. The system includes an antenna feed configured to at least one of transmit and receive a wireless signal occupying a frequency band. The system also includes a reflector comprising a reflectarray. The reflectarray includes a plurality of reflectarray elements, where each of the reflectarray elements includes a dipole element. The dipole element of at least a portion of the plurality of reflectarray elements comprises a crossed-dipole portion and a looped-dipole portion. The plurality of reflectarray elements can be configured to selectively phase-delay the wireless signal to provide the wireless signal as a coherent beam.

Abstract: In one embodiment, a multi-beam antenna is described. The multi-beam antenna includes a reflector having a single reflector surface defining a first focal region and a second focal region. A first feed group is located within the first focal region. The first feed group includes a first feed oriented relative to the reflector define a first beam pointed in a first direction. The multi-beam antenna further includes a fixed attachment mechanism attaching the first feed group to the reflector such that a position of the first feed group is fixed relative to the reflector. The multi-beam antenna further includes a second feed group located within the second focal region. The second feed group includes a second feed oriented relative to the reflector to define a second beam pointed in a second direction.

Abstract: An antenna for a level meter and a method for operating such an antenna. The antenna has an antenna housing, at least one supply element and at least one lens, the lens having at least first and second lens surfaces. The supply element guides coupled electromagnetic radiation and emits electromagnetic radiation in the direction of the first lens surface. The electromagnetic radiation received via the first lens surface can be relayed and emitted via the second lens surface. The lens is formed at least in part of a porous material, wherein the porous material connects the first lens surface and the second lens surface to one another, and a flushing device is provided for impinging the lens with a medium that passes through the porous material and through the second lens surface via the first lens surface.

Abstract: A reconfigurable antenna comprises a plurality of antenna feed elements, a plurality of plasma switches respectively associated with the antenna feed elements, and control circuitry for independently operating the plasma switches to selectively activate and deactivate the antenna feed elements. Each plasma switch may comprise a volume of inert gas, and a pair of electrodes spanning the respective volume of inert gas. The reconfigurable antenna may comprise a power supply for supplying a voltage to the pair of electrodes of each of plasma switch sufficient to ignite the respective inert gas volume into a plasma field to deactivate the respective antenna feed element. Each plasma switch may optionally be operated to attenuate each antenna feed element.

Abstract: A radio frequency antenna uses an array of spherical lens and mechanically movable radio frequency (RF) elements along the surface of the spherical lens to provide cellular coverage for a narrow geographical area. The antenna includes at least two spherical lenses, where each spherical lens has an associated element assembly. Each element assembly has a track that curves along the contour of the exterior surface of the spherical lens and along which a radio frequency (RF) element can move. The antenna also includes a phase shifter configured to adjust a phase of the signals produced by the RF elements. The antenna includes a control mechanism configured to enable a user to move the RF elements along their respective tracks, and automatically configure the phase shifter to modify a phase of the output signals from the elements based on the relative positions between the RF elements.

Abstract: A vehicle includes a vehicle body, a drive mechanism, a windshield, an antenna part provided in a vehicle interior, and a reflection suppression layer including a dielectric layer that closely adheres to a surface on the antenna part side of the windshield. The dielectric layer has a refractive index that is lower than a refractive index of a glass layer of the windshield and higher than a refractive index of air. The dielectric layer has a thickness that allows reflection of the transmission wave to be suppressed by interference between a reflected wave generated by reflection of the transmission wave on an interface on the opposite side of the innermost glass layer of the windshield to the antenna part side, and a reflected wave generated by reflection of the transmission wave on a surface on the antenna part side of the dielectric layer.

Abstract: The present disclosure provides a waveguide transition structure for receiving satellite signals, which can be implemented in a low noise block down-converter. In some embodiments of the present disclosure, the low noise block down-converter includes a feed horn structure having at least a first waveguide extending along a first direction, a housing having at least a second waveguide extending along a second direction and communicating with the first waveguide, and a circuit board positioned within the housing. The second direction is substantially not in parallel to the first direction. The circuit board has a receiving pin configure to receive microwave signals propagating in the second waveguide.

Abstract: A dual-band antenna panel comprises a plurality of dual-band radiating cells operating independently for a first frequency in a first frequency band and a second frequency in a second frequency band, the first frequency band being higher than the second frequency band, each of the radiating cells exhibiting a distinct feed to the first and to the second frequency. The antenna panel comprises radiating cells disposed according to a mesh dimensioned with respect to the first frequency band, and wherein the feeds to the second frequency of the radiating cells are clustered in packets within combiners having a single feed.

Abstract: An apparatus for determining or monitoring the fill level of a fill substance located in a container in a process, comprising: a signal producing unit; an in-coupling/out-coupling unit an antenna unit; wherein the antenna unit has a hollow conductor and an antenna element widening toward the fill substance and the antenna unit transmits high-frequency measuring signals in the direction of the surface of the fill substance and receives echo signals reflected on the surface of the fill substance; and a control/evaluation unit, which ascertains the fill level of the fill substance in the container based on travel time of the measuring signals. In or on the antenna unit a process isolation is provided, which is at least approximately transparent for the high-frequency measuring signals and which protects the in-coupling/out-coupling unit against influences of the process.

Abstract: A method for operating system. The method includes emitting a plurality of beams and steering the plurality of beams. Each of the plurality of lenses includes a different phase profile. The method further includes transmitting the plurality of beams. Each of the plurality of beams comprises a different beam pattern.

Abstract: A lens is provided. The lens includes a first two-dimensional (2-D) grid of capacitive patches and a first sheet layer. The first sheet layer includes a dielectric sheet and a second 2-D grid of capacitive patches. The dielectric sheet has a front surface and a back surface. The first 2-D grid of capacitive patches is mounted directly on the back surface of the dielectric sheet, and the second 2-D grid of capacitive patches is mounted directly on the front surface of the dielectric sheet. The first 2-D grid of capacitive patches is aligned with the second 2-D grid of capacitive patches to form a time delay circuit at each grid position of the aligned 2-D grids.

Abstract: Aspects of the subject disclosure may include, for example, an antenna system that includes a plurality of dielectric members configured to propagate first guided electromagnetic waves. A dielectric antenna array is configured to receive the first guided electromagnetic waves and to transmit a controllable beam in response thereto. Other embodiments are disclosed.

Abstract: A modal antenna array is described where modal antenna elements capable of generating multiple radiation modes are used to form array radiation patterns. Nulls in the array radiation pattern can be formed and positioned by proper modal antenna element mode selection, with these nulls used to provide interference suppression or mitigation. The shift in array radiation pattern maxima generated by modal element mode selection can be used to improve communication system link quality by optimizing array radiation pattern characteristics. Specifically, a ring or circular array configuration is described where a simplified common feed port can be implemented to feed multiple modal antenna elements used to form the array. A switch can be used to connect or disconnect one modal element from the array, with this feature providing additional unique array beam states. The modal array can be commanded via a look-up table or algorithm.

Abstract: An antenna includes a first body having a ring monopole and a second body positioned below the first body. The second body can have a plurality of notched ring resonators. A spacer can be positioned between the first and second bodies. In some embodiments, the second body can define an artificial ground. In addition, the ring resonators can be arranged and configured to generate a 180° phase difference between polarized waves so that a radiated wave from the ring monopole and a reflected wave from the artificial ground have orthogonal polarizations and a 90° phase difference to form a circularly polarized radiated wave.

Abstract: In a radar assembly, a first dielectric member includes a dielectric outermost structural member of a vehicle. A radar device includes an antenna module, and a substantially tubular or domed radome. The radome includes a transmissive portion, and is disposed to cover the antenna module such that the transmitted radar wave passes through the transmissive portion. The transmissive portion is disposed behind the back surface of the first dielectric member with space thereto. A second dielectric member includes at least the transmissive portion, and is disposed to face the first dielectric member. A frequency-selective substrate passes a radar wave within a frequency band therethrough, and block radar waves outside the frequency band. The frequency-selective substrate is disposed such that its first surface is directly abutted onto the first dielectric member, and its second surface is directly abutted onto the second dielectric member to constitute a sandwich structure.

Abstract: Arrangement of resonators in an aperiodic configurations are described, which can be used for electromagnetic cloaking of objects. The overall assembly of resonators, as structures, do not all repeat periodically and at least some of the resonators are spaced such that their phase centers are separated by more than a wavelength. The arrangements can include resonators of several different sizes and/or geometries arranged so that each size or geometry corresponds to a moderate or high “Q” response that resonates within a specific frequency range, and that arrangement within that specific grouping of akin elements is periodic in the overall structure. The relative spacing and arrangement of groupings can be defined by self similarity and origin symmetry.

Abstract: A system and method for detecting anomalies concealed upon a person may include a detection probe having an electromagnetic transmitter and an electromagnetic receiver. The electromagnetic transmitter is configured to emit electromagnetic pulses, while the electromagnetic receiver is configured to sample electromagnetic pulses from the electromagnetic receiver at specified times within a waveform window. The electromagnetic pulses may span the terahertz spectral region of 0.04 to 4 THz. The system may also have optical fibers connected to the electromagnetic transmitter and electromagnetic receiver, wherein femtosecond laser pulses are directed from a source to the electromagnetic transmitter and the electromagnetic receiver by the optical fibers.

Abstract: A radome for an antenna is provided as a composite of an isotropic outer layer and a structural layer of foamed polymer material. The composite is dimensioned to enclose an open end of the antenna. The radome may be retained upon the antenna by a retaining element and fasteners. The outer layer may be a polymer material with a water resistant characteristic. The structural layer may project inward and/or outward with respect to a plane of the seating surface of the radome.

Abstract: A software defined antenna can include a light source and a photoconductive surface. The photoconductive surface can be two-dimensional or three-dimensional. A plurality of electrically isolated pixels can be embedded in the photoconductive surface. The antenna can further include a processor with computer software incorporated to manipulate the light source to selectively illuminate the surface matrix in a predetermined pattern. As the surface matrix becomes illuminated, the illuminated portion of the matrix surface electrically connects the pixels, resulting in the desired radiation pattern. The software can be manipulated to further manipulate the light source to change antenna frequency, gain and bandwidth parameters, as desired by the user. Similarly, the pixels can be selectively illuminated to cause a desired radiation pattern, such as circular, sector scan or raster patterns.

Abstract: A transmitarray, or radio frequency lens, can provide a large variation of time-delay. The transmitarray comprises a number of time-delay unit (TDU) cells that each have a capacitive patch and a rectangular wire loop separated by dielectric material. The rectangular wire loop allows current continuity to be maintained between adjacent TDU cells, even when different sized TDUs are included in the transmitarray.

Abstract: A leaky travelling wave array of elements provide a broadband radio frequency antenna.

Abstract: A Cassegrain-type metamaterial antenna, includes: a metamaterial main reflector having a central through-hole, a feed source disposed in the central through-hole, and a sub-reflector disposed in front of the feed source, where an electromagnetic wave radiated by the feed source is emerged in a form of a plane wave after being reflected by the sub-reflector and the metamaterial main reflector in sequence; the metamaterial main reflector includes: a first core layer and a first reflection layer disposed on a rear surface of the first core layer, where the first core layer includes at least one first core layer lamella, and the first core layer lamella includes: a first base material and multiple first conductive geometric structures disposed on the first base material; and a far focus of the sub-reflector coincides with a phase center of the feed source. A paraboloid is replaced with a lamellar metamaterial main reflector.

Abstract: Aspects of the subject disclosure may include, for example, an antenna structure that includes a dielectric antenna comprising a dielectric feedline having a feed point, and a collar that facilitates aligning a port of a waveguide system to the feed point of the dielectric feedline for facilitating transmission or reception of electromagnetic waves exchanged between the port and the feed point of the dielectric feedline, the electromagnetic waves guided by the dielectric feedline without an electrical return path. Other embodiments are disclosed.

Abstract: A system and method for wirelessly transmitting signals via antenna phased array. In order to decrease the distance between individual antennae in the array, the antennae are submersed in a high dielectric material in addition to being arranged at right angles to one another, both features precluding one or more antennae from coupling. Furthermore, wires are covered in high dielectric material in order to refract RF signals around them, allowing antennae towards the center of the array to successfully transmit signals past other layers.

Abstract: Systems according to the present disclosure provide one or more surfaces that function as heat or power radiating surfaces for which at least a portion of the radiating surface includes or is composed of “fractal cells” placed sufficiently closed close together to one another so that a surface (plasmonic) wave causes near replication of current present in one fractal cell in an adjacent fractal cell. A fractal of such a fractal cell can be of any suitable fractal shape and may have two or more iterations. The fractal cells may lie on a flat or curved sheet or layer and be composed in layers for wide bandwidth or multibandwidth transmission. The area of a surface and its number of fractals determines the gain relative to a single fractal cell. The boundary edges of the surface may be terminated resistively so as to not degrade the cell performance at the edges.

Abstract: Disclosed is a Cassegrain microwave antenna, which comprises a radiation source, a first metamaterial panel used for radiating an electromagnetic wave emitted by the radiation source, and a second metamaterial panel having an electromagnetic wave convergence feature and used for converting into plane wave the electromagnetic wave radiated by the first metamaterial panel. Employment of the principle of metamaterial for manufacturing the antenna allows the antenna to break away from restrictions of conventional concave lens shape, convex lens shape, and parabolic shape, thereby allowing the shape of the Cassegrain microwave antenna to be panel-shaped or any shape as desired, while allowing for reduced thickness, reduced size, and facilitated processing and manufacturing, thus providing beneficial effects of reduced costs and improved gain effect.

Abstract: Systems according to the present disclosure provide one or more surfaces that function as heat or power radiating surfaces for which at least a portion of the radiating surface includes or is composed of “fractal cells” placed sufficiently closed close together to one another so that a surface (plasmonic) wave causes near replication of current present in one fractal cell in an adjacent fractal cell. A fractal of such a fractal cell can be of any suitable fractal shape and may have two or more iterations. The fractal cells may lie on a flat or curved sheet or layer and be composed in layers for wide bandwidth or multibandwidth transmission. The area of a surface and its number of fractals determines the gain relative to a single fractal cell. The boundary edges of the surface may be terminated resistively so as to not degrade the cell performance at the edges.

Abstract: Electronic equipment in vehicles may transmit and receive wireless messages. Each wireless message that is transmitted by a transmitter may include information on the vehicle from which it is being transmitted, information on the location of the transmitter within the vehicle, and other vehicle status information. Receiving equipment in vehicles may be used to receive the transmitted messages. Received signal strength indicator information may be associated with the transmitted messages. Using the received signal strength indicator information and information on the locations of the transmitters within the vehicles in which the transmitters are installed, equipment in a receiving vehicle may determine locations for nearby vehicles. Alerts may be presented to a driver of a vehicle and other suitable actions may be taken based on the locations of nearby vehicles, vehicle type information, and other information regarding traffic in the vicinity of the driver.

Abstract: A zoom antenna includes an ordinary pyramidal horn antenna with either a coaxial or waveguide feed and two parallel plate waveguide lenses (commonly referred to as “metal plate lenses”) positioned with their optical axes collinear with the boresight of the pyramidal horn antenna and aligned with their plates parallel to the electric field vector. The zoom antenna outputs a collimated microwave beam having a diameter varied by translation of the lenses along boresight relative to each other and relative to the phase center of the horn antenna. The zoom antenna can be rotated to vary the azimuth and elevation angles of the collimated microwave beam produced therefrom, to thereby aim the beam in any direction.

Abstract: A method and system for capturing, storing, and streaming over the air broadcasts based on user requests is disclosed. The system and method utilize subarrays of antenna elements for receiving over the air broadcasts. Processing pipelines are used to demodulate, transcode and index the content transmissions to produce content data that are streamed to users. In this way, the feeds from antennas can be accessed by users over a network connection.

Abstract: Thermoplastic resin foamed particles of the present invention including more than one or more functional additive selected from inorganic powder and inorganic fibers each includes a core layer formed of a thermoplastic resin and a coating layer in a foamed state formed of a thermoplastic resin, the mass ratio of the coating layer to the core layer is 99:1 to 50:50, the content (X) of the functional additive in the core layer is 5 to 90% by mass, and the content of the functional additive in the coating layer is smaller than the content (X) of the functional additive in the core layer. By this way, thermoplastic resin foamed particles from which a homogeneous foamed particle molding having excellent dimension stability, fusibility and appearance can be obtained while containing functional additive are provided.