Abstract: Disclosed is a radio wave device test system, comprising a fixed part configured to fix a radio wave device; a positioner system configured to control a rotation of the radio wave device by controlling the fixed part; an arch structure whose central point is located at a position where the radio wave device is located; a plurality of probes disposed to be spaced apart from one another at fixed intervals in the arch structure, and configured to receive a radio frequency (RF) signal from the raid wave device; and a plurality of receiving modules located at the plurality of probes, respectively, and configured to transform the RF signal into in-phase/quadrature (I/Q) data by carrying out digital transformation for the RF signal and to detect information on amplitude and a phase from the I/Q data.

Abstract: A method determines corrected TRP or TIS of an AUT in a near-field test chamber, the AUT having a phase center offset from a rotation center of the test chamber. The method includes performing EIRP or EIS measurements of the AUT at first sampling grid points on a first closed-surface geometric shape centered at the rotation center; mapping second sampling grid points to the first closed-surface geometric shape to provide mapped sampling grid points on the first closed-surface geometric shape, where the second sampling grid points are on a second closed-surface geometric shape centered at the phase center of the AUT; determining estimated EIRPs or EISs at the mapped sampling grid points using the EIRP or EIS measurements; scaling the estimated EIRPs or EISs at the mapped sampling grid points to provide scaled EIRPs or EISs; and calculating the corrected TRP or TIS based on the scaled EIRPs or EISs.

Abstract: To model a phased array antenna having a target array of antenna elements, a small array of antenna elements is selected that has fewer antenna elements than the target array. For each antenna element of the small array of antenna elements, far field patterns are captured for a plurality of signal frequencies. S-parameters for the small array of antenna elements are captured for the plurality of signal frequencies. The far field patterns captured for the antenna elements of the small array are mapped to antenna elements of the target array of antenna elements. The S-parameters captured for the small array are mapped to the target array.

Abstract: A system for increasing computing efficiency is disclosed. The system includes a memory that stores at least one tabular constraint. The tabular constraint contains a finite array of symbols, with each symbol representing a value thereby creating a relational symbol (r-symbol), or a potentially infinite set of values, with such a symbol thereby creating a quasi-finite symbol (QF-symbol). The system includes a program configured to compress and to query the tabular constraint.

Abstract: The present application provides a method and an apparatus of actively sensing a neuronal firing frequency at a functional site in a brain, the method comprising: generating a varying electromagnetic field and acting a near field of the generated electromagnetic field on a targeted brain functional site; sensing the alteration of the electromagnetic field at the targeted brain functional site; and determining a variation frequency of the alteration of the electromagnetic field at the targeted brain functional site as the neuronal firing frequency at the targeted brain functional site.

Abstract: The present invention relates to an antenna, in particular a mobile phone antenna, in particular for a mobile radio base station, having at least one emitter, a data acquisition unit, a memory and having at least one sensor for detecting a mechanical and/or electrical and/or thermal stress of the antenna, wherein the data acquisition unit aquires measurement data of the at least one sensor and temporarily stores them in the memory. It is provided here that the data acquisition unit generates data packets based on a plurity of measurement data stored in the memory and transmits them to an external data base.

Abstract: The invention relates to a method and system for the testing of an antenna comprising a plurality of radiating elements, wherein an array of one or more probes is placed in front of the antenna to be tested, and wherein the following steps are performed: acquisition by the array of one or more probes or by the radiating elements of the antenna under test of an RF signal emitted by the antenna under test or by the array of one or more probe (s), back propagation reconstruction of the signal emitted through a computation of the signal received by the various probes of the array of one or more probes or by the radiating elements of the antenna under test, test of the signal thus reconstructed or of parameters thereof to detect a potential defect of the antenna.

Abstract: A measurement system according to an embodiment of the present invention comprises: an analyzer; a first expansion module for transmitting a first electromagnetic wave signal to a first antenna under control of the analyzer; a second expansion module for receiving a second electromagnetic wave signal through a second antenna; a first signal generator for generating a first local oscillation signal under control of the analyzer, and detecting a reference characteristic of the first electromagnetic wave signal and a first test characteristic of the first antenna by using the first local oscillation signal; and a second signal generator for generating a second local oscillation signal under control of the analyzer, and detecting a second test characteristic of the second antenna by using the second local oscillation signal, wherein the first signal generator comprises a controller for converting instructions transmitted from the analyzer into internal instructions, and a local oscillation signal generator for ge

Abstract: A method for testing an antenna array uses a probe antenna to measure an RF signal antenna pattern of the antenna array. The method includes measuring the RF signal antenna pattern at a first position and at a second position relative to the antenna array. The first position and the second position are located at different distances from the antenna array in a middle field of the antenna array. The middle field satisfies near field criteria for the antenna array and also satisfies far field criteria for each antenna element of the plurality of antenna elements in the antenna array. The method further includes determining, based on the first measurement and based on the second measurement, the RF signal antenna pattern at a third position relative to the antenna array located in a far field of the antenna array.

Abstract: A method is provided for testing an antenna array of a DUT using a probe antenna, the antenna array including multiple antenna elements. The method includes providing a correction table that includes predetermined correction data of differences between far field antenna patterns from different positions in a far field of the antenna array and a middle field antenna pattern from a position in a middle field of the antenna array, where the middle field satisfies near field criteria for the antenna array and satisfies far field criteria for each antenna element in the antenna array; measuring an antenna pattern at a first position in the middle field of the antenna array; retrieving predetermined correction data from the correction table corresponding to a second position located in the far field of the antenna array; and translating the measured antenna pattern to the far field by adding the retrieved predetermined correction data.

Abstract: Methods and devices for streamlining phase and amplitude calibration and linearization in RF transceiver circuits including a plurality of switchable transmit and receive processing paths is presented. According to one aspect, switchable feedback paths are provided that can selectively feedback a portion of a transmitted RF signal or a test RF signal for use in the calibration. According to another aspect, the switchable feedback paths include combination of switches and couplers to selectively combine feedback from one or more of the switchable feedback paths. According to another aspect, the switchable feedback paths reuse portions of the receive paths of the plurality of switchable transmit and receive processing paths. The switchable feedback paths can be used to provide a combined feedback RF signal based on one or more transmitted RF signals that can be used as a digital pre-distortion feedback for linearization of the one or more transmitted RF signals.

Abstract: There are provided a user equipment (UE), a base station (BS) and a method for a UE. The user equipment (UE) at a first node comprises: a transceiver operative to transmit and receive data to and from a second node; and a circuitry operative to use at least a subcell identifier (ID) for physical layer behaviors, wherein the subcell ID is assigned for UEs in a same subcell, and a cell is divided into subcells in different divisions of a type of domain.

Abstract: According to one embodiment, an electronic device comprises first and second array antennas, and first and second wireless communication devices. An orientation of the first array antenna is different from an orientation of the second array antenna. A frequency band of the second wireless communication device is lower than a frequency band of the first wireless communication device. An electromagnetic wave power of the second wireless communication device is larger than an electromagnetic wave power of the first wireless communication device. A size or distance of antenna elements of the second array antenna is larger than a size or distance of antenna elements of the first array antenna.

Abstract: A test system for measuring beam characteristics of a device under test (DUT) is provided. The system comprises a DUT, a measurement antenna configured to receive electro-magnetic radiation emitted by the DUT, a link antenna configured to provide a test communication link to the DUT, and a control and analyzing unit configured to control a beam steering of the device under test and to analyze signals from the device under test received by the measurement antenna. The test communication data transmitted to the device under test comprises beam steering control data in order to control the beam steering of the DUT.

Abstract: A method of calibrating or correcting near field or far field data from a scanner board array of integrated measuring probes that are electronically switched to capture near-field data from an antenna-under-test (AUT) and having a board output includes the steps of coupling a calibrating probe with one of the measuring probes, measuring the power through the measuring probe and the calibrating probe and isolating the effect of the RF path from the measuring probe to the board output by removing the effect of the calibrating probe, and repeating for each measuring probe. Also disclosed are methods for correcting for scattering effects and loading effects on the AUT.

Abstract: A method for estimating the electric field strength associated to a radio wave emitted by an electromagnetic source of a cellular radio communication network within an area. The method includes: identifying a set of obstacles; determining at least one of: a direct visibility polygon of points in line of sight with the source; a reflection visibility polygon of points reachable by the wave after reflection by the obstacles; a diffraction visibility polygon of points reachable by the wave after diffraction by the obstacles. The visibility polygons are associated to respective values of the electric field computed therein. The method further includes: subdividing the area into pixels; for each pixel, determining if it belongs to at least one of the visibility polygons; and in the affirmative, determining the electric field strength at the pixel as a value proportional to the electric field computed at the at least one visibility polygon.

Abstract: Antenna characterization systems and methods are described for hardware-timed testing of integrated circuits (IC) with integrated antennas configured for over-the-air transmission and/or reception. An IC to be tested (e.g., the device under test (DUT)) may be mounted to an adjustable positioner in an anechoic chamber. Radio frequency (RF) characteristics (e.g., including transmission characteristics, reception characteristics, and/or beamforming characteristics) of the IC may be tested over-the-air using an array of antennas or probes within the anechoic chamber while continually transitioning the adjustable positioner through a plurality of orientations. Counters and reference trigger intelligence may be employed to correlate measurement results with orientations of the DUT.

Abstract: A test system for measuring beam characteristics of a device under test (DUT), comprising a first antenna for receiving electro-magnetic radiation emitted by the device under test or for establishing a first test communication link to exchange test communication data with the DUT. The system further comprises a switch for setting the mode of the first antenna to a measuring or communication mode, and a test interface for inputting beam steering and/or communication data to the DUT. The system further comprises a control/analyzing processor for controlling beam steering of the DUT and to analyze signals from the DUT, e.g., received by the first antenna operated in the measuring mode. When the first antenna is set to the communication mode, test communication data is transmitted to the DUT through the first antenna. The test communication data comprises beam steering control data for controlling the beam steering of the DUT.

Abstract: Apparatus and methods related to beamforming of harmonics are provided herein. In certain implementations, a communications device for operating in a cellular network is provided. The communications device includes a plurality of signal conditioning circuits configured to generate a plurality of transmit signals, an antenna array configured to radiate a transmit beam and including a plurality of antenna elements each thereof operatively associated with a corresponding one of the plurality of signal conditioning circuits, and a beam control circuit configured to control the plurality of signal conditioning circuits to provide beam steering of the transmit beam based on a direction of one or more harmonic lobes of the transmit beam.

Abstract: In one embodiment, a method includes determining a received power at a receiving antenna mounted to an antenna measurement system from a transmitting antenna mounted to a device under test (DUT) in motion relative to the antenna measurement system; determining one or more first orientation parameters of the antenna measurement system; determining one or more second orientation parameters of the DUT; and determining an antenna pattern of the transmitting antenna based on the received power, the first orientation parameters, and the second orientation parameters.

Abstract: Various illustrative embodiments disclosed herein generally pertain to detecting defects by using a radio-frequency debugging signal transmitted by a transmitting antenna array towards a receiving antenna located in a far-field region of the transmitting antenna array. The radio-frequency debugging signal, which is configured to provide information pertaining to a signal radiation distribution of the transmitting antenna array, is received in the receiving antenna and conveyed to a test unit. The test unit digitizes the received radio-frequency debugging signal to obtain a digital dataset and applies a back-propagation algorithm to the digital dataset for deriving a reconstructed near-field representation of the transmitting array.

Abstract: An apparatus for performing calibration of an antenna array having a plurality of antennas including at least a first antenna and a second antenna. The apparatus includes a global navigation satellite system receiver configured to measure a first phase of a first signal received by the first antenna from a satellite and a second phase of a second signal received by the second antenna from the satellite. The apparatus also includes at least one processor configured to receive the first phase and the second phase from the global navigation satellite system receiver and to operate in a calibration mode to determine a difference between the first and second phases.

Abstract: Methods and apparatuses are disclosed for a free space segment tester (FSST). In one example, an apparatus includes a frame, a first horn antenna, a second horn antenna, a controller, and an analyzer. The frame has a platform to support a thin film transistor (TFT) segment of a flat panel antenna. The first horn antenna transmits microwave energy to the TFT segment and receives reflected energy from the TFT segment. The second horn antenna receives microwave energy transmitted through the TFT segment. The controller is coupled to the TFT segment and provides at least one stimulus or condition to the TFT segment. The analyzer measures a characteristic of the TFT segment using the first horn antenna and the second horn antenna. Examples of a measured characteristic includes a measured microwave frequency response, transmission response, or reflection response for the TFT segment.

Abstract: A measurement system including an anechoic chamber, a turntable, N measurement antennas, in which N is a natural number and N?11, in which a spherical coordinate system is established by taking a center of a measured piece as an origin and a coordinates of the i (i=1, 2, 3, . . . , N) measurement antenna is Ai(?i, ?i, ?i), (i=1, 2, 3, . . . , N), in which ?i is a positive integral multiple of 15°, and at least one measurement antenna is arranged at a position where the angle ?is 15°, 30°, 30°, 45°, 60°, 75°, 90°, 105°, 120°, 135°, 150° or 165° correspondingly; and 0??i?360°, and the N measurement antennas are not located in the same plane. The present disclosure can create a measurement environment with small coupling interference and low reflection between the measurement antennas in a relatively small anechoic chamber, improving the measurement accuracy.

Abstract: A directional characteristic acquisition unit 51 rotates a wireless terminal 1 that is a measurement target using a terminal holding rotation mechanism 30 centering around a standard point O, measures a field intensity Pr of a radio wave received by the measurement antenna 21 at each rotation angle (?, ?) to calculate a virtual directional characteristic of a terminal antenna 1a in the wireless terminal 1. An error information output unit 60 calculates a reception angle error (??, ??), a propagation loss error E1, and a gain error E2 that occur in accordance with rotation of the wireless terminal 1, and corrects a virtual directional characteristic using these errors, using a correction unit 70, to calculate a directional characteristic Hc in a case where it is assumed that the terminal antenna 1a of the wireless terminal 1 is rotated at the position of the standard point O.

Abstract: Apparatus and methods related to beamforming of harmonics are provided herein. In certain implementations, a communication device for operating in a wireless network is provided. The communication device includes an antenna array including a plurality of antenna elements that generate a plurality of receive signals in response to a radio wave, a plurality of signal conditioning circuits operatively associated with the plurality of antenna elements and that condition the plurality of receive signals to provide beamforming of a receive beam, and a beam control circuit that controls the plurality of signal conditioning circuits to provide beam steering of the receive beam based on a direction of one or more harmonic lobes of the receive beam.

Abstract: An electromagnetic field optimization apparatus providing a means of more independently modifying the field in either the reactive near-field region or the far-field region while having significantly less modification to the other field. This means that a design to affect the real component of the impedance that affects the radiation in the far-field region does not affect, or minimally affects, the reactive component of the impedance that affects the field in the reactive near-field region.

Abstract: Methods and apparatus to provide built-in-test and/or fault isolation of individual array elements in assignment-based AESAs. BIT beam states for array element testing can be stored in AESA memory for rapid assignment sequencing of RF waveform generators and receive processing. Assignment-based selection can be used for AESA BIT beam states.

Abstract: Methods and apparatus are disclosed for manufacturing antennas with a unique signature and for identifying an antenna using its unique signature. An exemplary antenna comprises a radiating element and a ground element, between which a resistor-inductor-capacitor (RLC) circuit is connected. The RLC circuit is designed to generate a return-loss profile that serves as a unique antenna signature. The return-loss profile of the RLC circuit exhibits a resonance frequency outside the antenna's working bandwidth.

Abstract: To minimize a measurement range when a near field measurement is performed on the directivity of a massive-MIMO antenna, and prevent the accuracy of measurement from deteriorating. Beam direction detection means 33 causes a probe antenna 12 to perform a rough scanning in a state where an electromagnetic wave radiation plane 1a of a test antenna 1 is directed toward a reference direction directly facing a measurement plane P, and detects the direction of a beam radiated by the test antenna 1 on the basis of a received signal thereof. Antenna direction change means 34 changes the direction of the test antenna 1 so that the detected direction of a beam is directed toward the center of the measurement plane P.

Abstract: A test arrangement for wirelessly testing a device under test comprises a test antenna for receiving wireless signals from the device under test, a movable test antenna carrier that carries the test antenna and is movable to adjust the distance between the test antenna and the device under test, a transformation processor that is coupled to the test antenna and performs a near-field to far-field transformation based on the wireless signals received from the device under test and outputs respective transformed signals, and a signal processor that is coupled to the transformation processor and calculates a minimum far-field distance for the device under test based on the transformed signals, wherein the signal processor evaluates if the distance between the test antenna and the device under test is equal to or larger than the calculated minimum far-field distance.

Abstract: A system for acquiring channel knowledge and a method thereof are provided. At least one transmitter generates multiple directional beams in different directions, next modulates the directional beams in the different directions with at least one spreading sequence, so as to enlarge the beam range of each directional beam in the different directions and use the modulated directional beams as training-specific beams in the different directions, and sweeps the multiple training-specific beams in the different directions by using a plurality of antennas, so that at least one receiver measures at least one training-specific beam, and determines the channel knowledge according to the measurement result and beam-related information associated with the at least one training-specific beam, so as to achieve a technical effect of reducing training overhead.

Abstract: An array of scattering and/or reflector antennas are configured to produce a series of beam patterns, where in some embodiments the scattering antenna and/or the reflector antenna includes complementary metamaterial elements. In some embodiments circuitry may be configured to set a series of conditions corresponding to the array to produce the series of beam patterns, and to produce an image of an object that is illuminated by the series of beam patterns.

Abstract: Aspects of the subject disclosure may include, for example, an integrated circuit that includes at least one die having transceiver circuitry that generates outbound signals that convey outbound data and that receives inbound signals that convey inbound data. A first array of antenna elements arranged along the top portion of the IC package operate in conjunction with the transceiver circuitry to transmit at least a first portion of the outbound signals as first wireless transmissions and/or generate at least a first portion of the inbound signals from first wireless receptions. A second array of antenna elements arranged along the bottom portion of the IC package operate in conjunction with the transceiver circuitry to transmit at least a second portion of the outbound signals as second wireless transmissions and/or to generate at least a second portion of the inbound signals from second wireless receptions. Other embodiments are disclosed.

Abstract: A method of providing Observed Time Difference of Arrival (OTDOA) assistance information to a mobile station is disclosed. In some embodiments, the OTDOA assistance information may comprise Positioning Reference Signal (PRS) assistance information including antenna switching assistance information for at least one cell. In one embodiment, the method may be implemented on a location server for the cell.

Abstract: An antenna design method executed by a computer includes creating an antenna model including an antenna which includes a plurality of antenna elements and matching circuits which are respectively connected to the plurality of antenna elements and which comprise a matching element including a parasitic reactance and a loss resistance; obtaining a characteristic of the antenna and a characteristic of the matching element; calculating a characteristic of the created antenna model using the obtained characteristic of the antenna and the characteristic of the matching element; judging whether or not the calculated characteristic of the antenna model satisfies a standard value; and displaying result of the judgment.

Abstract: A method for optimizing a phased array antenna. A predicted future health state for elements in the phased array antenna is identified. A configuration for the elements to use a radiation pattern based on the predicted future health state for the elements taking into account potential degradation of a group of the elements in the predicted future health state is also identified.

Abstract: The invention relates to a method for electromagnetically testing an object, a method in which electromagnetic radiation is directed by a probe in a predetermined main aiming direction toward a predetermined test point at which the object is located. The invention is characterized in that the probe and a stand for the object are moved relative to one another by a mechanical moving device according to a movement representative of a predetermined angular spread statistic relative to the main aiming direction, in order to generate, by means of the probe, electromagnetic radiation having said predetermined angular spread statistic relative to the main aiming direction.

Abstract: Many indoor location services do not require precise knowledge of the position of a mobile device, but simply whether a mobile device is within a particular zone of an indoor area. Existing signals in an indoor space may provide enough information to distinguish between different zones of an indoor area, allowing a server to provide indoor location services without requiring the installation of new signal sources in the indoor area.

Abstract: A method for demodulating a signal in a receiver including at least two antennas, each receiving a signal, the received signals corresponding to a single emitted signal including symbol frames in which certain symbols, referred to as driver symbols, are known to the receiver, the method including: noise whitening in order to form two combined signals, the noise components of which are separate; normalizing the noise components of the combined signals in order to form two signals, the noise components of which are separate and have equal average standards; and performing signal demodulation with the maximum combination of the signal-to-noise ratio on the two signals, the noise components of which are separate and which have equal average standards, wherein during the first noise-whitening step for forming the two combined signals, the latter are determined retroactively using the maximum criterion.

Abstract: Systems and methods are disclosed for coordinating hub-beam selection in wireless backhaul networks and optionally, for joint hub-beam selection and slot assignment. Data indicative of path loss is measured or estimated for each of a set of RBMs and for each hub-beam of a respective multi-beam serving hub. A performance metric is computed, and hub-beam selection is made based on optimizing the performance metric across the set of RBMs. A serving hub may use reserved frames to train an RBM on each hub-beam and communicate beam selections, e.g. based on minimizing path loss on a per-cell or per-sector basis, or maximizing a sum-utility function for improved performance over a neighborhood of the network. A beam assignment map may be shared amongst serving hubs. A weight table of good and bad beam combinations may be generated to evaluate the cost of a hub-beam combination, for joint hub-beam selection and slot assignment.

Abstract: An inductive rotational speed sensor assembly includes a first PCB with a transmitter coil configured to convert an alternating electrical input into an alternating magnetic field. A second PCB is operatively connected to the first PCB for relative rotation and includes a resonance coil configured to couple to the alternating magnetic field of the first PCB to output a modulating position signal. The first PCB includes a receiver coil configured to receive the first and the modulating position signal and to output a signal indicative of rotational speed of the second PCB relative to the first PCB.

Abstract: The present invention is directed to a system and method for extrapolating antenna radiation patterns from a small number of measurements. The present invention is configured to derive an initial estimate based on design information and compare the initial estimate to far-field measurements. The controller is configured to recursively obtain a final estimate wherein a difference between the far-field measurements and the final estimate is less than a predetermined amount. The final estimate represents an extrapolated mapping of the antenna pattern.

Abstract: A computer device may receive a codebook, and generate a unitary transformation operator for the codebook. Furthermore, the computer device may decompose the unitary transformation operator into representations of two or more devices, and cause a generating of a layout of a photonic circuit that includes the two or more devices.

Abstract: A portable wideband harmonic signal generator includes circuitry for generating a signal having a selected fundamental frequency, for producing a signal having a harmonic series of the selected fundamental frequency, for transferring the signal having the harmonic series using a balanced impedance output, and for directionally transmitting transferred signal having the harmonic series using a directional antenna having a characteristic impedance that is matched to the balanced impedance output. There is thus provided a compact, efficient transmitter and antenna assembly for transmitting a wideband signal.

Abstract: A simulation device and a system and method for using the simulation device are disclosed. The simulation device may contain a plurality of antenna elements positionable on or near a radar or other sensing device. The simulation device may be configured to control the plurality of antenna elements to transmit signals that simulate a reflection of an electromagnetic signal off of one or more targets of particular sizes at particular azimuths, elevations, distances, trajectories, and/or velocities.

Abstract: Methods and apparatuses are disclosed that determine whether to feedback, and the amount of feedback, with respect to eigenbeam information based upon channel resources. Additionally, methods and apparatuses are disclosed that determine whether to feedback, and the amount of feedback, with respect to eigenbeam information based upon channel information and changes in channel information.

Abstract: A method of modeling a radio wave environment, the method being executed by a radio wave environment modeling apparatus using a group of intelligent robots includes measuring an intensity of radio waves received from at least one follower robot; measuring a distance between the at least one follower robot and a leader robot that belongs to the group of intelligent robots; and estimating an environment parameter using a wave model. Further, the method includes classifying the environment parameter estimated from at least one lattice by comparing the estimated environment parameter with predetermined environment parameters; and analogizing an intensity of radio waves of the at least one follower robot that are received from the at least one lattice.

Abstract: Methods and systems are disclosed for performing energy-on-target simulations for targeted regions to predict power or energy levels incident within the targeted region resulting from transmissions of a specific transmitting platform. Models may be used of a transmitting platform, a receiving platform, and a channel between the transmitting platform and the receiving platform to perform the simulation. In some embodiments, a plot may be generated of the energy-on-target results.

Abstract: A user-controlled method for modifying the radiation of a wireless device (1) in one or more volumes used for in-house communications, comprising user-selecting this one or more volumes (10, 10?, 10?, 10??, 10IV) while holding the orientation of this wireless device (1) modifying the intensity of this radiation in one or more directions so as to control the radiation in this user-selected one or more volumes (10, 10?, 10?, 10??, 10IV). The invention allows the user to define volumes or regions where radiation should be modified, e.g. reduced, and one or more temporal intervals in which this radiation should be reduced.