Abstract: Examples disclosed herein relate to a meta-structure based active reflectarray for passive and active reflection. A control module is coupled to reflection elements to provide energy and change the phase of the elements.

Abstract: Examples disclosed herein relate to a beam steering vehicle radar for object identification. The radar includes a radar module having at least one beam steering transmit antenna to radiate one or more radio frequency (“RF”) beams in a plurality of directions, at least one beam steering receive antenna to receive one or more RF return signals, and a transceiver to generate radar data capturing a surrounding environment from the one or more received RF return signals. The radar also includes a perception module configured to detect and identify an object in the surrounding environment from the radar data. At least one of the beam steering transmit antenna has a side lobe reduction mechanism formed within a substrate to reduce side lobes in the radiated one or more RF beams.

Abstract: Examples disclosed herein relate to an antenna calibration method for a beam steering radar. A first set of input voltages is determined for a plurality of phase shifters coupled to a plurality of antenna elements in an antenna array in the beam steering radar, the voltages to control phases of signals for transmission by the antenna array. A first set of input voltages is applied to the antenna array. Radiating signals resulting from the first set of input voltages are measured. Voltage and phase values for the plurality of phase shifters are iteratively optimized to determine voltage and phase value pairs that result in a desired gain for the antenna array. The voltage and phase value pairs are stored in a look-up-table in the beam steering radar.

Abstract: A reflectarray for an antenna system for use in wireless communications is described. The reflectarray includes a substrate and a plurality of cells configured in an array on the substrate. Each cell in the plurality of cells includes three dipoles arranged in a parallel configuration with a length of a center dipole is longer than a length of a lateral dipole. The length of the lateral dipole is 65% of the length of the center dipole. The plurality of cells can include a first set of three parallel dipoles arranged in a first direction and a second set of three parallel dipoles in a second direction that is orthogonal to the first direction. The first set of three parallel dipoles and the second set of three parallel dipoles are shifted half a period along both the first direction and the second direction in the array.

Abstract: Examples disclosed herein relate to reconfigurable circuits and systems for a radar system enabling both short-range and long-range operation. A reconfiguration module enables the various configuration changes for operation. The multi-range operation may be used to adjust transmission parameters of other modules including wireless communications.

Abstract: Examples disclosed herein relate to a meta-structure based reflectarray for beamforming wireless applications and a method of operation of passive reflectarrays in an indoor environment. The method includes receiving, by a plurality of passive reflectarrays, a Radio Frequency (RF) signal from a source. The method also includes reflecting, by the plurality of passive reflectarrays, the RF signal to generate a plurality of RF beams to a respective target coverage area, in which each of the plurality of RF beams increases a multipath gain along a signal path between a corresponding passive reflectarray to the respective target coverage area.

Abstract: Examples disclosed herein relate to a reflectarray antenna for enhanced wireless communication coverage area. A reflectarray antenna for enhanced wireless communication applications includes an array of reflectarray cells that includes a first plurality of conductive elements configured to radiate reflected radio frequency (RF) beams with a first phase shift in a first linear polarization and a second plurality of conductive elements arranged orthogonally to the first plurality of conductive elements and configured to radiate reflected RF beams with a second phase shift that is substantially equivalent to that of the first phase shift in a second linear polarization that is orthogonal to the first linear polarization. Other examples disclosed herein relate to a method of designing a reflectarray antenna and a method of performing pattern synthesis of a reflectarray antenna.

Abstract: In the present invention a guide or carrier is used to assemble and position multiple AiPs (or Integrated Circuit packages) on a substrate and maintain spacing therebetween. In some examples, this reduces package size and maintains desired tolerances. The carrier or guard is to be thin and flexible so as to allow some movement but maintain tolerances at specific locations.

Abstract: Examples disclosed herein relate to a reflectarray antenna system with two-dimensional beam scanning that includes a first reflectarray having a polarizing grid that operates as a reflective surface in a first polarization and operates as a transparent surface in a second polarization. The reflectarray antenna system includes a second reflectarray comprising an array of reflectarray cells and arranged parallel to the first reflectarray. The second reflectarray includes a first set of feed elements arranged along a first axis and a second set of feed elements arranged along a second axis orthogonal to the first axis to scan a field of view along the first and second axes. The second reflectarray can radiate radio frequency (RE) beams in the first polarization with the first and second sets of feed elements for reflection at the polarizing grid and radiate reflected RE beams in the second polarization for transmission through the polarizing grid.

Abstract: Transitional elements to offset a capacitive impedance in a transmission line are disclosed. Described are various examples of transitional elements in a multilayer substrate that introduce a transitional reactance to cancel the transmission line capacitive effects. The transitional elements reduce insertion loss.

Abstract: Examples disclosed herein relate to a meta-structure based reflectarray for beamforming wireless applications and a method of operation of passive reflectarrays in an indoor environment. The method includes receiving, by a plurality of passive reflectarrays, a Radio Frequency (RF) signal from a source. The method also includes reflecting, by the plurality of passive reflectarrays, the RF signal to generate a plurality of RF beams to a respective target coverage area, in which each of the plurality of RF beams increases a multipath gain along a signal path between a corresponding passive reflectarray to the respective target coverage area.

Abstract: Examples disclosed herein relate to an Insulated Glass Unit (“IGU”) to enhance wireless communications in a wireless network. The IGU has a first and a second glass layers, a first and a second spacers, and a first and a second ground planes, the first ground plane in contact with the first glass layer and the second ground plane in contact with the second glass layer. The IGU also includes a gas layer in between the first and the second ground planes, a reflectarray comprising a metastructure array of reflector elements, and a third glass layer on top of the metastructure reflectarray.

Abstract: Examples disclosed herein relate to reflectarray antenna for enhanced wireless applications. The reflectarray antenna has a ground conductive plane, a dielectric substrate coupled to the ground conductive plane, and a patterned conductive plane coupled to the dielectric substrate and comprising an array of cells to generate an antenna gain. In some aspects, each cell in the array of cells includes a reflector element with a predetermined custom configuration and configured to receive a radio frequency (RF) signal and to generate an RF return beam at a predetermined direction. Other examples disclosed herein relate to a portable reflectarray and a method of fabricating a reflectarray antenna.

Abstract: Examples disclosed herein relate to an Insulated Glass Unit (“IGU”) to enhance wireless communications in a wireless network. The IGU has a first and a second glass layers, a first and a second spacers, and a first and a second ground planes, the first ground plane in contact with the first glass layer and the second ground plane in contact with the second glass layer. The IGU also includes a gas layer in between the first and the second ground planes, a reflectarray comprising a metastructure array of reflector elements, and a third glass layer on top of the metastructure reflectarray.

Abstract: Examples disclosed herein relate to a meta-structure based active reflectarray for passive and active reflection. A control module is coupled to reflection elements to provide energy and change the phase of the elements.

Abstract: Examples disclosed herein relate to reflectarray antenna for enhanced wireless applications. The reflectarray antenna has a ground conductive plane, a dielectric substrate coupled to the ground conductive plane, and a patterned conductive plane coupled to the dielectric substrate and comprising an array of cells to generate an antenna gain. In some aspects, each cell in the array of cells includes a reflector element with a predetermined custom configuration and configured to receive a radio frequency (RF) signal and to generate an RF return beam at a predetermined direction. Other examples disclosed herein relate to a portable reflectarray and a method of fabricating a reflectarray antenna.

Abstract: An inductive system for vehicle information capture, having a radar module adapted to identify an echo signal having an amplitude over a threshold value, an interrogator module coupled to the radar module and adapted to initiate a radio frequency identification (RFID) information exchange when the amplitude is over the threshold value, a processor coupled to the radar module and the interrogator module, and a memory storage unit adapted to store RFID information. Examples disclosed herein provide methods and apparatus for vehicle sensors and vehicle identification.

Abstract: Examples disclosed herein relate to a directed reflect array with a tiled configuration for fixed wireless applications. The directed reflect array includes a substrate and a plurality of reflective tiles disposed on the substrate, wherein the plurality of reflective tiles are individually arranged to produce a directed radiation pattern that is directed toward a target reflection point based at least on a reflection phase of one or more reflective tiles in the plurality of reflective tiles. Other examples disclosed herein relate to a method of configuring a directed reflect array and a wireless network system that includes a directed reflect array.

Abstract: In accordance with various implementations, a radar system comprising a non-line of sight (NLOS) module to enhance operation of the radar system is provided. In various embodiments, the NLOS module is a radar repeater module with phase shifters to generate an indication of an object detected in a NLOS area. In various embodiments, the NLOS module includes a reflector structure configured to reflect or redirect radar signals from a train on the tracks into a NLOS area. The NLOS module can include a receive antenna, a transmit antenna configured to transmit one or more received radar signals into a NLOS area, and a phase shifting module for applying a phase shift to a radar signal reflected from an object in the NLOS area that is outside an operational range of the radar unit.

Abstract: In the present invention a guide or carrier is used to assemble and position multiple AiPs (or Integrated Circuit packages) on a substrate and maintain spacing therebetween. In some examples, this reduces package size and maintains desired tolerances. The carrier or guard is to be thin and flexible so as to allow some movement but maintain tolerances at specific locations.