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: Examples disclosed herein relate to a stripline feed distribution network with embedded resistor for use in millimeter-wave applications. The feed distribution network includes a plurality of ground planes and a signal plane coupled to the plurality of ground planes. The signal plane is configured to serve as a feed to an antenna array with signaling operating at a millimeter-wave frequency bands. The signal plane includes an input transmission line and a plurality of output transmission lines coupled to the input transmission line. The feed distribution network also includes a resistor plane interposed between the signal plane and at least one ground plane of the plurality of ground planes. The resistor plane is configured to isolate the signal plane from the antenna array, and to match a characteristic impedance between the input transmission line and the plurality of output transmission lines.

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 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 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: 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 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 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: 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.