Abstract: Embodiments of methods and apparatus for providing distributed airborne wireless communications are provided herein. In some embodiments, an airborne wireless service area includes: an airborne fleet, comprised of a plurality of aircraft, wherein the airborne fleet is configured to transmit a plurality of first beams at a first radio frequency (RF), wherein the plurality of first beams are characterized by corresponding first frequency band, channel, bandwidth, transmission format, uneven angular field intensity distribution, and boundaries, wherein neighboring first beams have an overlap region, and wherein at least one of the following characteristics is different between the neighboring first beams: frequency band, channel, or transmission format; and a plurality of first communication cells defined by respective boundaries of the plurality of first beams, wherein each of the first communication cells are characterized by their size, shape, and position.

Abstract: A direction of arrival estimation apparatus includes at least first and second sub-arrays to receive a reflected wave of a transmission waveform from a target; first and second phasing parts that perform phasing of reception signals at the first and second sub-arrays to generate first and second sub-array beams; an arrival time difference calculation part that calculates first and second correlations of the reception signals of the first and second sub-array beams at first and second time points to find an arrival time difference between times of the reflected wave arriving at the first and second sub-arrays, based on a result of a predetermined operation on the first and second correlations and a time difference between the first time point and the second time point; and a direction of arrival calculation part that finds a direction of arrival of the target based on the arrival time difference.

Abstract: Systems, methods, and computer-readable media for processing a digital bit stream representative of a communication signal are provided. The method can include dividing, at one or more processors, the digital bit stream into a plurality of data packets, each having an overlap of data from an adjacent packet. The method can include performing a timing recovery operation and a carrier recovery operation on portions of the plurality of data packets in multiple processing blocks in the processor, in parallel. The method can include combining the first plurality and the second plurality based on timing and phase stitching.

Abstract: High-performance ultra-wideband Phased Array Antennas (PAA) are disclosed, having unique capabilities, enabled through photonic integrated circuits and novel optical architectures. Unique capabilities for PAA systems are enabled by photonic integration and ultra-low-loss waveguides. Novel aspects include optical multiplexing combining wavelength division multiplexing and/or a novel extension to array photodetectors, providing the capability to combine many RF photonic signals with very low loss. Architectures include tunable optical up-conversion and down-conversion systems, moving a chosen frequency band between baseband and a high RF frequency band with high dynamic range. Simultaneous multi-channel RF beamforming is achieved through power combining/splitting of optical signals.

Abstract: An example method of estimating the angular resolution of antenna array comprises: receiving a plurality of values of magnitude and phase of a radio frequency (RF) signal for each antenna element of a plurality of antenna elements comprised by an antenna array; performing, by a machine learning model, a feature extraction operation to transform the plurality of values of magnitude and phase into a plurality of data points in a reduced-dimension space; clustering, by the machine learning model, the plurality of data points into a plurality of clusters; and computing, based on the clustered data points, an angular resolution value for the antenna array.

Abstract: A radar apparatus and an automobile including the radar apparatus are provided. The radar apparatus may measure the elevation/declination angle of a target with high accuracy by using simple circuits at low cost without use of a detection circuit and an AD conversion circuit having high time resolution. A transmit antenna transmits transmit signal waves modulated through the multilevel FSK, and receive antennas receive reflected waves obtained by reflecting, off a target, the transmit signal waves which return. The multilevel FSK is used as a modulation method so that the beat frequency between the receive signal waves from the target and the transmit signal waves serves as the Doppler frequency. Thus, the elevation/declination angle ? of the target is calculated by a computing unit, not from the frequencies of the receive signal waves as in the related art, but from the frequency of the transmit signal waves.

Abstract: [Object] To enable more appropriate recognition of an interference situation of a directional beam. [Solution] Provided is an apparatus including: an acquisition unit that acquires a weight set for forming a directional beam; and a control unit that multiplies a reference signal for channel quality measurement by the weight set. The weight set is a weight set that is able to be generated from a first weight set for acquiring directivity in a first direction, a second weight set for acquiring directivity in a second direction, and a third weight set for phase adjustment of dual layer multiple-input multiple-output (MIMO). The third weight set is a specific one of a plurality of weight sets for phase adjustment of dual layer MIMO.

Abstract: A phased array antenna includes a front plate, a plurality of blocks including a plurality of slices that include a plurality of transmitters and a circuit board that distributes a power supply, a control signal, and a high-frequency signal to the plurality of slices, the blocks being held on a first face of the front plate, a plurality of power sources that supply power to the blocks, which is held on the first face of the front plate, an antenna element layer in which a plurality of antenna elements are arrayed, which is held on a second face of the front plate, and a high-frequency signal wiring layer including high-frequency signal wiring through which a high-frequency signal to the antenna elements passes.

Abstract: A transmission method of simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals. One of signal generation processing in which phase change is performed and signal generation processing in which phase change is not performed is selectable, thereby improving general versatility in signal generation.

Abstract: A novel system that allows for 3D radar detection that simultaneously captures the lateral and depth features of a target is disclosed. This system uses only a single transceiver, a set of delay-lines, and a passive antenna array, all without requiring mechanical rotation. By using the delay lines, a set of beat frequencies corresponding to the target presence can be generated in continuous wave radar systems. Likewise, in pulsed radar systems, the delays also allow the system to determine the 3D aspects of the target(s). Compared to existing solutions, the invention, in embodiments, allows for the implementation of simple, reliable, and power efficient 3D radars.

Abstract: The subject matter described herein relates to various antenna element configurations, antenna array configurations, their operations including various systems and methods to generate modulated data for transmission by an RF antenna array via an optical processing engine. The subject matter includes optical processing engine structure and methods (e.g., modulating in the optical domain, MIMO and spatial modulation via RF beam formation, coherent transmission of RF signal components, coherent operation of spatially separate RF antenna arrays) that may be implemented with the various RF antenna array structures. In some examples, the system combines the virtues of digital, analog and optical processing to arrive at a solution for scalable, non-blocking, simultaneous transmission to multiple UE-s. Much of the system architecture is independent of the RF carrier frequency, and different frequency bands can be accessed easily and rapidly by tuning the optical source (TOPS).

Abstract: The present invention discloses wireless communication method and wireless communication apparatus. Provided is an electronic equipment for a first communication apparatus of a wireless communication system, comprising: a number of antenna sub-arrays, each sub-array comprising a plurality of antennas, each column or row in the sub-array corresponding to one input terminal; a plurality of groups of first direction phase shifter, wherein the first direction phase shifters in each group are disposed between the input terminal of the corresponding sub array and a radio frequency chain, wherein each group of the plurality of groups of first direction phase shifters is configured to adjust a first direction angle of an antenna wave beam for transmitting a corresponding radio frequency chain signal in a first direction in accordance with a first control signal.

Abstract: This disclosure relates to non-contact inspection of material for identifying and estimate composition of a material under inspection. Traditionally, material inspection is an invasive process involving contact based approaches. A radar-based approach requires placement of the radar at a specific location, which is a challenge since amplitude of the reflected signal, depends on the distance from the material under inspection. The present disclosure addresses this technical problem by providing a Continuous Wave radar-based approach that is based on absolute slope at extrema points on the reflected signal from the material under inspection.

Abstract: A wireless power transmission device includes a power transmitter to transmit a wireless power signal through a plurality of first antennas, a propagation path estimation unit to estimate first propagation path information characterizing a propagation path between the plurality of first antennas and a predetermined antenna, a propagation path extraction unit to extract second propagation path information characterizing a propagation path passing through a moving body, based on at least one of a difference on a time axis of a plurality of pieces of the first propagation path information each acquired at different times, and filtering on a frequency axis, a weight calculator to calculate a weight vector that determines a directivity of a combined power transmission beam formed by the plurality of first antennas, and a controller to control an amplitude and a phase of the wireless power signal inputted to each of the plurality of first antennas.

Abstract: A method for measuring beam steering characteristics of a device under test using a measurement system comprising a probe array with at least two field probes. The field probes can be arranged at different angles with respect to the device under test. A reference unit for calibrating the probe array is provided. At least two calibration measurements with different main radiation directions of the reference unit are performed wherein a predefined number of field probes of the probe array is used for measuring the radiation pattern of the reference unit. A calibration dataset for at least each field probe of the predefined number of field probes and each radiation direction is generated and stored. The reference unit is replaced by a device under test such that the device under test is located at the same measurement position as the reference unit was during the calibration measurements. A measurement of the device under test is performed by using the predefined number of field probes of the probe array.

Abstract: A multi-beam photonic monopulse comparator is disclosed. Photonic inputs incorporating M component wavelengths are split into equivalent inputs for each quadrant subarray and array element (e.g., N array elements in each quadrant subarray). Within each array element, the component wavelengths are apodized by attenuators and the apodized input signal modulated by a received inbound RF signal (via broadband Mach-Zehnder electro-optical modulators). The resulting positive-polarity and negative-polarity modulated photonic signals are demultiplexed and each component wavelength time-delayed. Time-delayed wavelength-selective optical delay channels are copied and combined by single mode/multi-mode (SM/MM) couplers into photonic antenna beams and simultaneously generated photonic comparator outputs (elevational difference, sum, azimuthal difference) for each component wavelength.

Abstract: A removable module for a phased array, the module including: a circuit board having a ground plane formed on one side of the circuit board; an antenna mounted on and extending away from a topside of the circuit board; circuitry on a backside of the circuit board, the circuitry including an RF front end circuit coupled to the antenna; and a group of one or more first connecters mounted on the backside of the circuit board, the first connectors for physically and electrically connecting and disconnecting the module from a master board through a corresponding group of one or more matching second connectors on the master board, the first connectors on the module having electrically conductive lines for carrying an externally supplied LO signal for the RF front end circuit and an IF signal for or from the RF front end circuit.

Abstract: A photonic integrated circuit (PIC) provides a common architecture to feed both optical and RF phased arrays to produce steerable co-boresighted optical and RF beams from a single chip. The PIC may be used for guidance, mobile data links, autonomous vehicles and 5G cellular communications. A plurality of switches are monolithically fabricated on the PIC with the optical feed network to switch the optical power of the phase-modulated optical channel signals between the integrated optical antennas and the RF antennas to produce steerable optical and RF beams. The photo-detectors and RF antennas may be discrete components or integrated with the optical feed network. To ensure that the optical and RF beams are co-boresighted (within a specified angular tolerance) for the same steering commands, the PIC is positioned within the RF antenna array footprint.

Abstract: A method is provided for controlling transmission of an electronically steerable antenna system, wherein the electronically steerable antenna system comprises a signal generator configured to generate electromagnetic waveforms, and an antenna.

Abstract: Phased array antenna system operated from a remote location. Operations at a radio hub location involve generating an RF signal and modulating with the RF signal a continuous wave optical carrier to produce a transmit modulated optical carrier (TMOC). Electronic control signal digital data is also generated at the radio hub to control an antenna beam pattern of an array antenna. The control signal digital data is used to modulate an optical carrier for generating a control signal modulated optical carrier (CSMOC). Both the TMOC and CSMOC are coupled to an optical fiber for communication to an antenna site remote from the radio hub location. At the antenna site, the CSMOC and TMOC are processed to recover the electronic control signal digital data and a plurality of transmit element level modulated RF (ELMRF) signals which are applied to array antenna elements.

Abstract: Disclosed are an active antenna device and a test method therefor, for resolving the problem that existing large-scale active antennae cannot be tested by using a traditional test method due to no traditional antenna connectors.

Abstract: Delivering a radio frequency (RF) signal to a remote phased array antenna system involves using an optical modulator at an RF source location to modulate a high power optical carrier signal with a source RF signal SRF so as to produce a high power transmit modulated optical carrier (TMOC) signal. An optical link communicates the high power TMOC signal to a remote antenna location, where the high power TMOC is split into N optical paths to obtain N reduced power TMOC signals. In each of the N optical paths, photodetection operations are performed upon the reduced power TMOC signal to obtain N reduced power S?RF signals which are then constructively combined to obtain a high power S?RF signal which is communicated to at least one antenna element.

Abstract: Aspects of the present disclosure involve a radar system employing dual receive antenna arrays. The radar system may include a transmit antenna array to emit a radar beam toward a selected portion of a field of view, as well as a vertical receive antenna array and a horizontal receive antenna array. Each of the receive antenna arrays may include a plurality of antenna elements grouped into sub-arrays that may be configured to receive scatter signals from the selected portion, such as by way of beamforming. The received scatter signals may be combined within each sub-array to generate combined scatter signals, which may then be digitized. A signal data processor may then digitally process the digitized signals from the first sub-arrays and from the second sub-arrays, and correlate the digitally processed signals to generate detection information for each of a plurality of sub-portions of the selected portion.

Abstract: A method and apparatus is disclosed herein for antenna element placement are disclosed. In one embodiment, an antenna comprises an antenna feed to input a cylindrical feed wave; a single physical antenna aperture having at least one antenna array of antenna elements, where the antenna elements are located on a plurality of concentric rings concentrically located relative to an antenna feed, wherein rings of the plurality of concentric rings are separated by a ring-to-ring distance, wherein a first distance between elements along rings of the plurality of concentric rings is a function of a second distance between rings of the plurality of concentric rings; and a controller to control each antenna element of the array separately using matrix drive circuitry, where each of the antenna elements is uniquely addressed by the matrix drive circuitry.

Abstract: An RF lens includes a multitude of radiators adapted to transmit radio frequency electromagnetic EM waves whose phases are modulated so as to concentrate the radiated power in a small volume of space in order to power an electronic device positioned in that space. Accordingly, the waves emitted by the radiators are caused to interfere constructively at that space. The multitude of radiators are optionally formed in a one-dimensional or two-dimensional array. The electromagnetic waves radiated by the radiators have the same frequency but variable amplitudes.

Abstract: A system for detecting and locating submerged underwater objects having neutral buoyancy comprising mechanically steered sonar to image the water column comprises mechanically steered sonar with a single emission channel, to perform the insonification of a first individual sector in a first pointing direction by a single first acoustic pulse, the sonar forming a single reception channel suitable for acquiring a first acoustic signal resulting from insonification, the mechanically steered sonar being mounted on a carrier to advance in a main direction, the first pointing direction substantially lateral to the carrier and the first individual sector exhibits a wide relative bearing aperture and a narrow elevation aperture, the mechanically steered sonar comprising a mechanical pointing device to tilt the first pointing direction about an axis of rotation substantially parallel to the main direction allowing the sonar to acquire first acoustic signals resulting from insonifications performed in different pointin

Abstract: The proposed retro-directive quasi-optical system includes at least a lens set and a pixel array. The lens set is positioned on one side of the pixel array and the lens set instantly establishes retro-directive space channels between the pixels in the pixel array and the object(s) distributed in the accessible space defined by the lens set through infinite or finite conjugation. In the pixel array, a number of pixels are arranged as an array and each pixel is composed of at least one pair of transmitter antenna and receiver antenna. To guarantee that the electromagnetic waves transmitted from a pixel into the accessible space may be reflected back to the receiver of the same pixel, the size of each pixel is not larger than the point-spread spot size defined by the lens set, wherein the point-spread spot size can be contributed either from lens diffraction or aberration.

Abstract: A combined pulsed and FMCW AESA radar system is described. The radar system includes an AESA array of radiating elements, an array of TR modules, an RF combiner/splitter, a transmitter, a pulsed radar receiver and an FMCW radar receiver. Each TR module corresponds to a respective radiating element of the array of radiating elements. The transmitter is configured to transmit an excitation signal to excite selected or all radiating elements of the array of radiating elements via the TR modules. When the transmitter is in a pulsed radar mode, the pulsed radar receiver is configured to receive radar return signals via the RF combiner/splitter from radiating elements of the array of radiating elements via the TR modules. When the transmitter is in an FMCW radar mode, the FMCW radar receiver is configured to receive radar return signals from selected radiating elements of the array of radiating elements via the TR modules.

Abstract: A scanning device generally produces an image having a uniform resolution throughout a target region. To improve radar scanning/lidar scanning, an efficient scan approach to enable a radar device/lidar device to adoptively perform a scan of a target region based on interested regions and/or an adjustable resolution. The apparatus may be a scanning device for scanning. The apparatus performs a first scan over a target region to obtain a plurality of first scan samples at a plurality of locations within the target region. The apparatus generates a saliency map of the target region based on signal intensities of the plurality of first scan samples. The apparatus determines a salient region within the target region based on the saliency map. The apparatus performs at least one second scan over the salient region to obtain at least one second scan sample in the salient region.

Abstract: A radar apparatus includes a first antenna and a second antenna. The first antenna includes a plurality of first antenna elements that are arrayed in a first direction on a surface oriented to a forward direction, as antenna elements configuring the first antenna. The second antenna includes a plurality of second antenna elements that are arrayed in a second direction perpendicular to the first direction on the surface oriented to a forward direction, as antenna elements configuring the second antenna. The radar apparatus emits radar waves in a forward direction using either of the first and second antennas, and receives reflected waves of the radar waves using the other of the first and second antennas.

Abstract: The present invention discloses an antenna system, where the antenna system includes an antenna module, configured to: receive and/or transmit at least one first radio frequency signal, and at least one second radio frequency signal; a power-split phase-shift network module, configured to control an amplitude and a phase of each radio frequency signal in the antenna module, where control parameters for controlling an amplitude and a phase of each first radio frequency signal are configured according to a beam pointing direction and a beam width that are required by a three-dimensional building region, and control parameters for controlling an amplitude and a phase of each second radio frequency signal are configured according to a beam pointing direction and a beam width that are required by a ground region. Therefore, a problem of high costs and difficulty in obtaining an antenna site and maintaining an antenna is resolved.

Abstract: An example method disclosed herein includes: detecting, by a wireless communication component supporting a predetermined number of communication channels, receivers within a communication range of a transmitter. The method also includes: in accordance with a determination that a number of receivers is less than or equal to the predetermined number, dedicating communication channels to each respective receiver. Each dedicated communication channel is used to send information identifying a location of the respective receiver to the transmitter. The method further includes: detecting, by the wireless communication component, an additional receiver within the communication range; and in response to the detecting, determining that an updated number of receivers is greater than the predetermined number.

Abstract: An antenna array device is steered laterally (horizontally) by phase shifting the RF signal at each column of the array. The phase shifting is incremented column by column. Control signals provided to the phase shifters control the steering. The antenna array device may be an MIMO antenna, with at least two arrays. Two different DC control signals may be combined with two RF signals, with the different DC control signals used to control a left or right side of each of the two antenna arrays.

Abstract: Systems and methods to generate and transmit power waves are disclosed herein. An example method includes: receiving, by a transmitter, from one or more sensors, location data about a location associated with one or more objects within a transmission field of the transmitter. The one or more sensors may include a proximity sensor configured to send the location data of the one or more objects, and the one or more objects are associated with a maximum permissible exposure (MPE) level. The method also includes: transmitting, by the transmitter, one or more power waves to converge to form a pocket of energy at a location of an electronic device; and transmitting, by the transmitter, one or more power waves to converge destructively to form a null space at the location of the one or more objects, the null space having a power density level that is below the MPE level.

Abstract: The present disclosure provides a method of wireless transmission of power and Wi-Fi signals to electronic devices. The method includes identifying a first receiver that is associated with a first electronic device that requires power and a second receiver that is associated with a second electronic device that requires Wi-Fi signals, generating RF signals at least in part by converting power provided by a power source, where the transmitter includes a first set of antennas for transmitting RF signals and a second set of antennas for transmitting Wi-Fi signals, and transmitting, to the first receiver, the RF signals using at least two antennas of the first set of antennas connected to the transmitter. The method further includes, while transmitting the RF signals using the at least two antennas of the first set of antennas, simultaneously transmitting, to the second receiver, Wi-Fi signals using the second set of antennas.

Abstract: A power amplifier system for amplifying an input having a carrier frequency having an amplitude. The system includes a plurality of n amplifiers coupled to an asymmetrical combiner formed of a passive network, each amplifier has an input and an output, the asymmetrical combiner has a plurality of inputs and an output, the output of each amplifier is coupled to an input of the asymmetrical combiner, an impedance viewed at the output of each of the n amplifiers is a function of the amplitude and phase at each of the other n?1 amplifiers. An amplitude/phase controller is coupled to the plurality of n amplifiers or the asymmetrical combiner to control the amplitude/phase at the asymmetrical combiner input. The amplitude/phase controller is configured to present an amplitude/phase at each input of the asymmetrical combiner to target an optimal impedance at the carrier frequency for each of the plurality of n amplifiers.

Abstract: The present disclosure relates to a wireless communication network node which comprises an antenna arrangement having at least three antenna columns. Each antenna column comprises at least two antenna elements of a first polarization (P1) and at least two antenna elements of a second polarization (P2), orthogonal to the first polarization (P1). For each antenna column, the antenna elements of the first polarization (P1) are connected to a combined port of a corresponding first filter device, and the antenna elements of the second polarization (P2) are connected to a combined port of a corresponding second filter device. Each of the filter devices is arranged to separate signals of different frequency bands between the respective combined port and respective filter ports. The antenna arrangement is arranged for transmission at two different channels (TX1, TX2) and reception at four different channels (RX1, RX2, RX3, RX4) for three different frequency bands (f1, f2, f3).

Abstract: A rotational deviation and a positional deviation of a power transmission antenna and a power reception antenna are adjusted using an amount of electric power received in adjustment antenna elements provided on the same plane as the power transmission antenna and the power reception antenna.

Abstract: Apparatus (100) is described comprising: an antenna array (1021 . . . 102N); a plurality of units (1041 . . . 104N), each unit configured to mix a radio frequency signal from one or more of the antennas (102) with oscillating signals having phases defined by a global signal and to provide in-phase and quadrature-phase signals; a constellation rotation system configured to, for each unit, rotate a constellation point associated with the in-phase and quadrature-phase signals by a rotation angle to provide adjusted in-phase and quadrature-phase signals; signal buses (106, 107) for global in-phase and quadrature-phase signals configured to receive the adjusted in-phase and quadrature-phase signals, respectively, from a plurality of the units; a feedback system configured to, for each unit, compare one or more of the adjusted in-phase and quadrature-phase signals with one or more of the global in-phase and quadrature-phase signals to determine an error in the rotation angle.

Abstract: A method and apparatus is disclosed herein for antenna element placement are disclosed. In one embodiment, an antenna comprises an antenna feed to input a cylindrical feed wave; a single physical antenna aperture having at least one antenna array of antenna elements, where the antenna elements are located on a plurality of concentric rings concentrically located relative to an antenna feed, wherein rings of the plurality of concentric rings are separated by a ring-to-ring distance, wherein a first distance between elements along rings of the plurality of concentric rings is a function of a second distance between rings of the plurality of concentric rings; and a controller to control each antenna element of the array separately using matrix drive circuitry, where each of the antenna elements is uniquely addressed by the matrix drive circuitry.

Abstract: A method and apparatus for aperture segmentation are disclosed. In one embodiment, the antenna comprises an antenna feed to input a cylindrical feed wave and a physical antenna aperture coupled to the antenna feed and comprising a plurality of segments having antenna elements that form a plurality of closed concentric rings of antenna elements when combined, where the plurality of concentric rings are concentric with respect to the antenna feed.

Abstract: A radar apparatus includes: a transmitting antenna including a first antenna and a second antenna that transmit transmission waves; a signal processor configured to determine a mounted state of the radar apparatus on the vehicle; and a phase adjuster that adjusts at least one of phases of transmission signals output to the first antenna and the second antenna of the transmitting antenna. The signal processor controls the phase adjuster to adjust the at least one of the phases of the transmission signals based on the mounted state determined by the signal processor.

Abstract: The present disclosure describes a plurality of antenna arrangements that may be suitable for wireless power transmission based on single or multiple pocket-forming. Single or multiple pocket-forming may include one transmitter and at least one or more receivers, being the transmitter the source of energy and the receiver the device that is desired to charge or power. ‘The antenna arrangements may vary in size and geometry, and may operate as a single array, pair array, quad arrays or any other suitable arrangement, which may be designed in accordance with the desired application.

Abstract: An angle-resolving radar sensor, e.g., for motor vehicles, includes; an antenna having multiple antenna elements which are each switchable to one of multiple evaluation channels; and an evaluation device for determining the angle of incidence of a received signal based on the amplitudes measured in the evaluation channels. The number of antenna elements is greater than the number of evaluation channels and a switching device is provided to connect the evaluation channels alternatingly to different selections of antenna elements.

Abstract: A multi-beam frequency-modulated continuous wave (FMCW) radar system designed for short range (<20 km) operation in a high-density threat environment against highly maneuverable threats. The multi-beam FMCW system is capable of providing continuous updates, both search and track, for an entire hemisphere against short-range targets. The multi-beam aspect is used to cover the entire field of regard, whereas the FMCW aspect is used to achieve resolution at a significantly reduced computational effort.

Abstract: The present disclosure describes a plurality of antenna arrangements that may be suitable for wireless power transmission based on single or multiple pocket-forming. Single or multiple pocket-forming may include one transmitter and at least one or more receivers, being the transmitter the source of energy and the receiver the device that is desired to charge or power. ‘The antenna arrangements may vary in size and geometry, and may operate as a single array, pair array, quad arrays or any other suitable arrangement, which may be designed in accordance with the desired application.

Abstract: A phased-array antenna system includes an array of antenna feed elements that produces a radiation pattern to provide spot beams within which to receive a signal in a frequency band and carrying communication from a terminal at a known geographic location. A beamformer forms the spot beams; and a channelizer divides the frequency band into frequency subbands, and measures power levels of the signal over respective frequency subbands. And an antenna controller selects a frequency subband based on the measured power levels indicating that the signal includes an identifiable interference, and calculates a set of beam weights based on the measured power level over the selected frequency subband, and based on the known geographic location of the terminal. The beamformer, then, forms the spot beams based on the calculated set of beam weights to thereby suppress at least some of the identifiable interference from the signal.

Abstract: A method for ascertaining and compensating for a misalignment angle of a radar sensor of a vehicle, includes generating a first set of data which contains information about a measured alignment of the radar sensor with respect to an instantaneous movement of the vehicle; generating a second set of data which contains information about a measured alignment of the reference axes defined at the vehicle with respect to the instantaneous movement of the vehicle; ascertaining a misalignment angle by comparing the generated first set of data to the generated second set of data; compensating for the ascertained misalignment angle by changing an emission direction of the main lobe of the antenna characteristic as a function of the ascertained misalignment angle.

Abstract: A power amplifier includes an output terminal, capacitive element groups including capacitive elements, and amplifier groups including amplifiers. Capacitive elements of the capacitive element groups are disposed on a first circle whose center is located on the output terminal. Amplifiers of the amplifier groups corresponding to the capacitive elements of the capacitive element groups are disposed on a second circle, which is concentric with and larger than the first circle. Each of the capacitive elements of the capacitive element groups is connected to both the output terminal and the corresponding amplifier of the amplifiers of the amplifier groups.

Abstract: Controlling the polarization state of signals to be transmitted from a MIMO capable radio base station node to a plurality of user equipment, which radio base station node comprises a precoder unit connecting a first and a second virtual antenna port to a respective first and second transmit antenna port, by the steps of controlling (S10) a relative phase between transmitted signals from the first and second transmit antenna port to provide a predetermined pair of orthogonal polarization states for signals transmitted on the first and second virtual antenna ports, and interchanging (S20) the polarization states of the first and second virtual antenna ports, to provide transmitted polarized signals with alternating polarization states.