Among other things, a reconfigurable antenna array (RAA) includes individual pattern reconfigurable antennas (PRA). Each of the PRAs has (a) an antenna, (b) components controllable to generate and effect any of two or more modes of the PRA, the modes having respectively different steered radiation patterns, and (c) inputs to receive drive signals for the antenna and control signals for the controllable components. Control circuitry has outputs coupled to the inputs of the PRAs to drive the antennas of the PRAs to form an array beam having an array peak in a particular direction and at the same time to deliver control signals for the controllable components to effect a selected mode of each of the PRAs for which the steered radiation pattern has a peak in the particular direction of the array beam and has one or more nulls in the directions of one or more of the side-lobes of the array beam.

An electronic power divider for radio frequency signals, and an electronic system containing such electronic power divider, includes one or more inputs designed to be fed by an electromagnetic radio frequency signal having a predetermined wavelength; at least two outputs for the radio frequency signal, each of which is connected to the same input; electric paths adapted to connect each output to the corresponding input, and a system of selective variation of the electric impedance associated with each of the electric paths during the passage of the signal. The impedance variation system is adapted to vary the impedance associated with the paths discreetly between a lower and an upper value, and to simultaneously maintain the value of the impedance associated with two or more paths at least at the lower value.

An antenna structure includes a housing, a first feed source, a second feed source, a third feed source, and a radiating body. The first feed source is electrically coupled to a first radiating portion of the housing and adapted to provide an electric current to the first radiating portion. The second feed source is electrically coupled to the second radiating portion and adapted to provide an electric current to the second radiating portion. The radiating body is mounted within the housing and electrically coupled to the third feed source. The third feed source provides an electric current to the radiating body.

An apparatus is disclosed herein for a cylindrically fed antenna and method for using the same. In one embodiment, the antenna comprises an antenna feed to input a cylindrical feed wave and a tunable slotted array coupled to the antenna feed.

Systems and methods of manufacture are disclosed for semiconductor device assemblies having a front side metallurgy portion, a substrate layer adjacent to the front side metallurgy portion, a plurality of through-silicon-vias (TSVs) in the substrate layer, metallic conductors located within at least a portion of the plurality of TSVs, and at least one conductive connection circuitry between the metallic conductors and the front side metallurgy portion. The plurality of TSVs with metallic conductors located within are configured to form an antenna structure. Selectively breakable connective circuitry is used to form and/or tune the antenna structure.

System and methods are described herein for providing wireless power to a target device, such as a laptop computer, a mobile phone, a vehicle, robot, or an unmanned aerial vehicle or system (UAV) or (UAS). A tunable multi-element transmitter may transmit electromagnetic radiation (EMR) to the target device using any of a wide variety of frequency bands. A location determination subsystem and/or range determination subsystem may determine a relative location, orientation, and/or rotation of the target device. For a target device within a distance range for which a smallest achievable waist of the Gaussian beam of the EMR at an operational frequency is smaller than the multi-element EMR receiver of the target device, a non-Gaussian beamform may be determined to increase efficiency, decrease overheating, reduce spillover, increase total power output of rectenna receivers on the target device, or achieve another target power delivery goal.

A single-switch-per-bit topology for reconfigurable reflective surfaces (RRSs) is provided. Novel multi-bit unit-cell configurations are presented for radio-frequency (RF) RRSs with improved radiation efficiency and compact designs. Embodiments described herein realize a multi-bit RRS using an antenna array with multiple integrated switches at the ports of every antenna element (e.g., one at each port, providing one control bit per switch). By manipulating the states of the switches, the impinging waves on the surface are modulated, leading to beamforming in the desired direction. Some embodiments utilize a single switch-per-bit topology integrating single-pole-single-throw (SPST) switches (e.g., PIN diodes) into the unit-cell design, achieving up to 4 bits of phase quantization with only 4 switches. The exhibited radiation efficiency of the multi-bit RRS is significantly improved compared to lower bit configurations.

A method and apparatus for DC offset correction in an antenna aperture are described. In one embodiment, the antenna comprises: an array of antenna elements having liquid crystal (LC); drive circuitry coupled to the array and having a plurality of drivers, each driver of the plurality of drivers coupled to an antenna element of the array and operable to apply a drive voltage to the antenna element; and voltage correction logic coupled to the drive circuitry adjust drive voltages to compensate for an offset between a first magnitude of a first voltage applied to the LC of each antenna element during a first interval of drive polarity and a second magnitude of a second voltage applied to the LC of said each antenna element during a second interval of drive polarity opposite the drive polarity of the first interval.

An antenna structure includes a housing, a first feed source, and a second feed source. The first feed source is electrically coupled to a first radiating portion of the housing and adapted to provide an electric current to the first radiating portion. The second feed source is electrically coupled to one of a second radiating portion or a third radiating portion of the housing. The other one of the second radiating portion or the third radiating portion is electrically coupled to the first radiating portion.

Among other things, a reconfigurable antenna array (RAA) includes individual pattern reconfigurable antennas (PRA). Each of the PRAs has (a) an antenna, (b) components controllable to generate and effect any of two or more modes of the PRA, the modes having respectively different steered radiation patterns, and (c) inputs to receive drive signals for the antenna and control signals for the controllable components. Control circuitry has outputs coupled to the inputs of the PRAs to drive the antennas of the PRAs to form an array beam having an array peak in a particular direction and at the same time to deliver control signals for the controllable components to effect a selected mode of each of the PRAs for which the steered radiation pattern has a peak in the particular direction of the array beam and has one or more nulls in the directions of one or more of the side-lobes of the array beam.