This page is updated frequently with new Phase Shift-related patent applications.
|| List of recent Phase Shift-related patents
| Scalable radio frequency communication system|
A device implementing the subject scalable radio frequency communication system includes one or more primary radio frequency integrated circuits (rfics) and at least one secondary rfic. Each of the one or more primary rfics is configured to receive an intermediate frequency (if) signal from a baseband processor, upconvert the if signal to a radio frequency (rf) signal, and transmit the rf signal to one or more secondary rfics.
| Method for reducing the crest factor wide band signal|
A method for reducing the crest factor of a wideband signal including n narrowband signals, n being a natural integer greater than or equal to two, the method, implemented by an emitting equipment, including phase shifting the narrowband signals between them in such a way as to reduce the crest factor.. .
Airbus Ds Sas
| Semiconductor laser and optical integrated light source including the same|
A semiconductor laser according to the present invention includes an active layer, a guide layer laminated on the active layer, a diffraction grating formed along a light emission direction in the guide layer, an upper electrode provided above the guide layer, and a lower electrode provided below the active layer. The diffraction grating includes a current-injection diffraction grating and current-non-injection diffraction gratings provided both in front of and in back of the current-injection diffraction grating.
Mitsubishi Electric Corporation
| Dynamically monitoring the instantaneous zero rotation rate voltage of interferometric fiber optic gyroscope (ifog)|
The drift (°/h) for an interferometric fiber optic gyroscope (ifog) means the variations on the voltage generated versus the zero angular (rotation) rate, whilst ifog is not under influence of any angular rate effect. If the drift of an ifog is predefined, the compensation of the drift can trivially be carried out by a subtraction process.
Tubitak (turkiye Bilimsel Ve Teknolojik Arastirma Kurumu)
|Transceiver architecture for multiple antenna systems|
A transceiver architecture with combined digital beamforming and analog/hybrid beamforming is proposed. Digital beamforming is used for beam training with reduced overhead (switching time).
|Rf duplexing device|
Radio frequency (rf) duplexing devices and methods of operating the same are disclosed. In one embodiment, an rf duplexing device includes a transmission port, a receive port, a first duplexer, and a second duplexer.
Rf Micro Devices, Inc.
|Integrated device package and/or system comprising configurable directional optical transmitter|
Some novel features pertain to a device that includes a first integrated device package and a second integrated device package. The first integrated device package includes a first package substrate, a first integrated device, and a first configurable optical transmitter.
|Multi-electrode photonic digital to analog converting vector modulator|
A digital-electronic-to-analog-optical converter, which has a structure consistent with a super-mach-zehnder interferometer, and which can perform the functionalities of both a digital to analog converter (dac) and a digital modulator uses a sub-mach-zender modulator to modulate optical wave signals propagating through its optical waveguide in a push-pull manner. The modulation performed is phase modulation realized with electrodes positioned near the optical wave guide where such electrodes carry modulation signals in digital, analog or discrete time signal format creating electromagnetic or electric fields that engage the optical wave signals traveling through the waveguide thus imparting a phase shift onto the optical wave signals.
Alcatel-lucent Usa Inc.
|Oscillation device, scanning-type scanner device, information terminal, phase-shift amount adjustment device, and phase-shift amount adjustment method|
An oscillation device includes an oscillator, an oscillation detection unit that detects oscillation of the oscillator and outputs an oscillation detection signal, and a drive unit that generates a drive signal in keeping with the oscillation detection signal and outputs the drive signal to the oscillator. The drive unit includes a phase shift unit that shifts the phase to provide the drive signal as positive feedback to the oscillator.
Funai Electric Co., Ltd.
|Device for compensating for the drift of a phase shift of a device for modulating the polarization state of a light beam|
A device for analyzing and/or generating a polarization state of a measurement point of a target object includes a polarizer suitable for selecting, in an incident light wave, a light beam which is linearly polarized in a predefined direction; a first birefringent element suitable for having the light beam pass therethrough; a second birefringent element identical to the first element and suitable for having the light beam pass therethrough, the light beam then being directly or indirectly directed toward the object in order to be reflected in the form of a reflected beam. The device includes an optical assembly having one or more optical elements located in an optical path between the first element and the second element, and the optical assembly includes an odd number of mirrors, or, an odd number of half-wave plates, or, an odd number of a mix of mirrors and half-wave plates..
Centre National De La Recherche Scientifique - Cnrs-
Continuously variable transmission mechanism
The present invention has a mechanical rotation drive mechanism (50) that drives rotation of at least one rotation pinion sprocket (22; 23) on its axis from among a plurality of pinion sprockets (20). The mechanical rotation drive mechanism (50) drives the rotation of at least one rotation pinion sprocket (22; 23) on its axis in concert with a sprocket movement mechanism (40a) so as to eliminate a phase shift, associated with a radial direction movement of the plurality of pinion sprockets (20) by the sprocket movement mechanism (40a), of the plurality of pinion sprockets (20) with respect to a chain (6)..
Diplexed antenna with semi-independent tilt
Systems and methods for a diplexed antenna with semi-independent tilt are disclosed. The diplexed antenna supports two or more frequency bands, in which the vertical tilt of each of the supported frequency bands is separately controlled by a coarse level of phase shifting, but commonly controlled by a fine level of phase shifting..
Commscope Technologies Llc
Method and transmitting phase shift keyed optical signals
A burst-mode phase shift keying (psk) communications apparatus according to an embodiment of the present invention enables practical, power-efficient, multi-rate communications between an optical transmitter and receiver. Embodiments may operate on differential psk (dpsk) signals.
Massachusetts Institute Of Technology
Reducing location-dependent interference in distributed antenna systems operating in multiple-input, multiple-output (mimo) configuration, and related components, systems, and methods
Components, systems, and methods for reducing location-based interference in distributed antenna systems operating in multiple-input, multiple-output (mimo) configuration are disclosed. Interference is defined as issues with received mimo communications signals that can cause a mimo algorithm to not be able to solve a channel matrix for mimo communications signals received by mimo receivers in client devices.
Corning Optical Communications Llc
Signal representing data, for generating such signal and for determining the represented data from such signal
A method and a device are described for generating a signal representing data. The method for generating a signal has a step of modulating a portion (1p, 2p) of the data using phase shift keying and spreading the modulated portion over the at least one frequency base band using at least one highly auto-correlated spread code sequence (1c, 2c) associated with the frequency base band.
Broadnet Invest Ag
Modular multi-phase electric machine
A multi-phase electric motor is proposed that comprises a rotor and a stator. The rotor has a number of magnets directed towards the stator and the stator includes a plurality of phase windings directed towards the magnets.
Gem Motors D.o.o.
Tilt adapter for diplexed antenna with semi-independent tilt
A tilt adapter configured to facilitate a desired tilt of a first radio frequency (rf) band and a second rf band of an antenna is disclosed. The antenna supports two or more frequency bands, in which the vertical tilt of each of the supported frequency bands is separately controlled by a coarse level of phase shifting, but commonly controlled by a fine level of phase shifting..
Commscope Technologies Llc
A rotary compressor includes: a vertically-positioned airtight compressor housing, in an upper section of which a discharge unit of a refrigerant is provided and in a lower section of which an inlet unit of the refrigerant is provided and lubricant oil is stored; and a lubricating mechanism supplying lubricant oil stored in the lower section of the compressor housing to a sliding portion of a compressing unit through a vertical lubricating hole and a horizontal lubricating hole of a rotation shaft. The horizontal lubricating hole of the lubricating mechanism is formed between the same direction as an eccentric direction of an eccentric portion provided on the rotation shaft and causes an annular piston of the compressing unit making an orbital motion in a cylinder and a 80° phase shifted direction from the same direction as the eccentric direction in a direction opposite to a rotation direction of the rotation shaft..
Fujitsu General Limited
Phase shifting mixer
Performing quadrature combining and adjusting including: a plurality of mixing circuits configured to generate a plurality of frequency converted signals; at least one mixing circuit of the plurality of mixing circuits is configured with a plurality of paths, each path representing one linearity mode; and a plurality of combining circuits configured to combine the plurality of frequency converted signals to generate a differential baseband output signal.. .
Autotransformer with wide range of, integer turns, phase shift, and voltage
Using two mechanically identical units the new autotransformer is uniquely suited to provide balanced power supplies for 12-pulse ac to dc converters with capacitive, inductive, or resistive dc load circuit. The resulting 12-pulse current waveforms contain very small residual 5th and 7th harmonics.
Transmission balancing for phase shift mask with a trim mask
Implementations described and claimed herein include photolithography technology to alleviate the imbalance of transmission intensity induced. In one implementation, a method comprises exposing an alternating phase shift mask (alt-psm) and a trim mask, wherein an exposure placement of the trim mask is shifted relative to an exposure placement of the alt-psm..
Seagate Technology Llc
Absolute distance measurement for time-of-flight sensors
A time-of-flight (tof) sensor device is provided with features for correcting distance measurement offset errors caused by such factors as temperature, dynamic reflectivity ranges of objects in the viewing space, or other factors. In various embodiments, the tof sensor device generates corrected distance values based on comparison of two different distance values measured for an object by two different measurement techniques, including but not limited to phase shift measurement, pulsed tof measurement, distance measurement based on the focal length of the tof sensor's lens, and comparison of distance variations with light intensity variations.
Cedes Safety & Automation Ag
Apparatus and cancelling self-interference signal in rf front end
The apparatus includes a transmission signal divider for dividing and transmitting a received signal to a transmission antenna and an attenuator, an attenuator for applying a predetermined attenuation factor to the transmitted signal divided to the attenuator, a phase shifter for phase-shifting the signal to which the attenuation factor is applied by a predetermined phase, and a time delayer for time-delaying the phase-shifted signal by a predetermined time.. .
Industry-academic Cooperation Foundation, Yonsei University
Time of flight camera
A cw-tof camera that uses a piecewise constant or linear discretized indicator function of first and second modulation frequencies of light that the camera transmits to illuminate a scene and a round trip time tr for light from and back to the camera for features in the scene to disambiguate wrapped phase shifts that the camera acquires for the features.. .
Destruction-free and contactless inspection method and inspection surfaces of components with ultrasound waves
The invention relates to a method of nondestructive and contactless testing of components (3), wherein ultrasonic waves (6) are irradiated onto the surface of the component (3) at a predefinable, non-perpendicular angle of incidence (9) using an ultrasonic transmission sound transducer (1) arranged spaced apart from the surface of the component (3) and the intensity of the ultrasonic waves (7) reflected from the surface of the component (3) is detected with time resolution and/or frequency resolution by the antenna array elements (2n) of an ultrasonic antenna array (2) configured for detecting ultrasonic waves (7) and the phase shift of the ultrasonic waves guided at the surface of the test body is determined therefrom with respect to the ultrasonic waves (7) directly reflected at the surface of the component (3).. .
Mtu Aero Engines Gmbh
Systems for analog phase shifting
A system for phase shifting that produces an output signal by modifying a phase of an input signal, including a primary phase shifting stage that modifies the input signal phase in increments set by a first tuning resolution; a secondary phase shifting stage that modifies the input signal phase in increments set by a second tuning resolution; and, a tuning circuit that controls the primary phase shifting stage and the secondary phase shifting stage according to control input.. .
Phase noise suppression
A transceiver comprises local oscillator circuitry, phase noise determination circuitry, mixing circuitry, and digital signal processing circuitry. The local oscillator circuitry is operable to generate a local oscillator signal.
System and a radio frequency filter
In accordance with an embodiment, a circuit includes a plurality of filter circuits having a first port, a second port and a third port, where a second port of a first of the plurality of filter circuits is coupled to a first port of a second of the plurality of filter circuits, and each of the plurality of filter circuits includes a first passive filter, a second passive filter, a first coupler and a combining network. The first coupler includes an input port coupled to the first port, an isolated port coupled to the second port, a first phase shifted port coupled to the first passive filter and a second phase shifted port coupled to the second passive filter, and the combining network includes a first input coupled to the first passive filter, a second input coupled to the second passive filter, and an output coupled to the third port..
Minimization of torque ripple
Systems and methods of operating an electric motor including a first linear actuator including a first coil, a second linear actuator including a second coil, a rotational shaft, a cam assembly mounted on said rotational shaft for translating linear movement of the first and second linear actuators to rotational movement of the rotational shaft. The first coil is driven with a first signal that produces a first radially-directed force.
Multi-band antenna system
The present invention relates to a multiband antenna system and, more particularly, to a multiband antenna system which performs beam tilt while servicing a multiband with a broadband radiating element supporting a multiband. The multiband antenna system according to the present invention comprises: at least one broadband radiating element; a branching filter; and a plurality of phase shifters.
Semiconductor device with touch sensor circuit
A semiconductor device includes a terminal to which a touch electrode may be coupled; a source voltage drop circuit generating a constant voltage; a phase shift circuit generating a phase shifted clock in response to a first clock and a phase control signal; and a switching circuit to which the constant voltage is supplied. The switching circuit generates drive pulses for applying the constant voltage to the terminal in response to the phase shifted clock.
Photomask and forming the same and methods of manufacturing electronic device and display device using the photomask
A phase shift mask includes a substrate, a second phase shift pattern on the substrate, the second phase shift pattern extending to an outermost perimeter of the substrate, the second phase shift pattern being formed of a material that is semi-transmissive to light of a first wavelength and the substrate being substantially transparent to the light of the first wavelength such that the mask transmits about 2 to about 10% of the light of the first wavelength at the second phase shift pattern, and a first phase shift pattern on the substrate, the second phase shift pattern being disposed between the outermost perimeter of the substrate and the first phase shift pattern.. .
Oxide capacitor electro-optical phase shifter
An electro-optical phase shifter to be located in an optical waveguide may include a rib of a semiconductor material extending along a length of the optical waveguide and a control structure configured to modify a concentration of carriers in the rib according to a control voltage present between first and second control terminals of the phase shifter. The control structure may include a conductive layer covering a portion of the rib and electrically connected to a first of the control terminals.
A method to determine and/or monitor at least one process variable of a medium with at least one vibration-capable unit. The vibration-capable unit is excited to mechanical vibrations by means of an electrical excitation signal of an adjustable frequency; wherein the mechanical vibrations are transduced into a received electrical signal, which is characterized at least by a frequency and/or a phase and/or an amplitude.
Method for communication via three orthogonal waveforms
Aspects of the present disclosure aim at providing three orthogonal waveforms that can be used for transmitting 3n bits (n bits from each waveform) at a given frequency. Such three orthogonal waveforms can be used in applications such as qam to create a 3-dimensional qam, along with use in other like applications such as in orthogonal frequency-division multiplexing (ofdm), quadrature phase shift keying (qpsk), binary phase shift keying (bpsk), among others.
Tone-phase-shift keying: a new modulation scheme for sc-fdma
A method of wireless communication by a user equipment includes determining an allocation of a set of tones in a symbol for conveying data. The method further includes determining to use m-ary phase shift keying (mpsk) to modulate the data onto a subset of tones of the set of tones.
Maximum likelihood sequence estimation of quadrature amplitude modulated signals
In a receiver of quadrature amplitude modulation (qam) signal, the received qam signal is divided into multiple quadrature phase shift keying (qpsk) symbol streams. A maximum likelihood symbol estimation (mlse) is performed on each qpsk symbol stream to recover information bits in the received qam signal.
Electric power conversion system
An electric power conversion system includes: a first battery; a second battery; an electric power converter including a plurality of switching elements, and configured to bidirectionally step up or step down electric power between an output line and each the first and second batteries in accordance with pwm signals; and a controller configured to control first and second step-up and step-down circuits by generating first and second pwm signals. The first and second step-up and step-down circuits are established between each first and second batteries and the output line.
A power circuit includes: first and second switching circuits coupled in parallel between an input terminal and an output terminal; a control signal generator that performs an on/off control of the first and second switching circuits individually and generates a first control signal and a second control signal having different phases; a frequency converter that converts a frequency of the first control signal after converting a frequency of the second control signal; and a phase shifter that shifts the phase of the second control signal when a first interrupt is introduced as the first control signal is turned on after the frequency converter has converted the frequency of the second control signal.. .
Radar device utilizing phase shift
A radar device comprises at least one transmitter unit for transmitting a radar signal, at least one receiver unit for receiving a reflected radar signal, and a phase shift unit for producing a phase shift in the frequency modulated radar signal in response to a phase shift signal. The receiver unit comprises at least one filter unit for filtering the received signal and is arranged for resetting the filter unit in response to said phase shift signal, so as to avoid saturation of the filter unit due to the phase shift..
Correction of transmission line induced phase and amplitude errors in reflectivity measurements
Various examples of methods and systems are disclosed for correction of phase and amplitude errors that occur in transmission lines connecting transmitter/receiver devices to measurement fixtures. In one example, a method is described that includes using time domain processing to determine a phase shift from the measurement fixture that can occur between calibration measurements and measurements of the specimen under test.
Method for performing phase shift control in an electronic device, and associated apparatus
A method for performing phase shift control in an electronic device and an associated apparatus are provided, where the method includes: obtaining a set of clock signals corresponding to a set of phases; and controlling a phase shift of an output signal of an oscillator by selectively mixing the set of clock signals into the oscillator according to a set of digital control signals, wherein the phase shift corresponds to the set of digital control signals, and the set of digital control signals carries a set of digital weightings for selectively mixing the set of clock signals. More particularly, the method may include: selectively mixing the set of clock signals into a specific stage of a plurality of stages of the oscillator according to the set of digital control signals..
Optical barcodes having spatially phase shifted clock and reference tracks
Barcodes are provided that are applied to or integrated with a moving carrier, where the barcodes have a plurality of information modules, at least one clock track having a plurality of alternating clock track modules and at least one reference track having a plurality of alternating reference track modules, where the at least one reference track is a second clock track and has a same periodicity as the clock track but a spatial phase shift when compared to the clock track. The barcode is configured to allow at least one barcode reader to determine a direction of movement of the carrier from at least one signal from a clock track detector and at least one signal from a reference detector..
Roche Diabetes Care, Inc.
Phase shift mask and manufacturing display apparatus using the same
Provided is a method of manufacturing a display apparatus, the method including forming an amorphous silicon layer on a substrate; changing amorphous silicon in the amorphous silicon layer into crystalline silicon by irradiating the amorphous silicon with a laser beam emitted through a phase shift mask; and forming a display device, the phase shift mask including a base substrate; a barrier layer on the base substrate and including a plurality of transmissive portions which are spaced apart from each other in a first direction; and phase shift portions which alternately fill the plurality of transmissive portions in the first direction.. .
Samsung Display Co., Ltd.
Distance measuring system and imaging sensor
A tof (time of flight) type distance measuring system of high accuracy is provided. The distance measuring system includes: a light source unit for emitting light at a timing indicated by an emission signal; a light receiving unit for acquiring raw data for each pixel from an imaging sensor, by exposing the imaging sensor to the light reflected from an object at a timing indicated by an exposure signal; a tof calculation unit for supplying a tof signal indicating the distance from each pixel to the object that is calculated based on the raw data; a detection unit for detecting the difference between a standard value and the tof signal for a standard pixel on the imaging sensor, and generating a phase control signal and a fine adjustment signal in accordance with the difference; a correction unit for correcting the tof signal on the basis of the fine adjustment signal, and outputting the correction result as distance information for each pixel; and a control unit for controlling the phase shift of at least one of the emission signal and the exposure signal on the basis of the phase control signal..
Panasonic Intellectual Property Management Co., Ltd.
Production phase shift film, and production circular polarizing plate
Provided is a method capable of producing a retardation film suppressed in biaxiality, having a small nz coefficient, and having a slow axis in an oblique direction with high production efficiency. The production method for a retardation film of the present invention includes: holding left and right side edge portions of a film to be stretched with left and right variable pitch-type clips configured to have clip pitches changing in a longitudinal direction, respectively; preheating the film; reducing, under a state in which a position at which the clip pitch of the clips on one side out of the left and right clips starts to reduce and a position at which the clip pitch of the clips on another side starts to reduce are set to different positions in the longitudinal direction, the clip pitch of each of the clips to a predetermined pitch to subject the film to oblique stretching; and releasing the clips holding the film..
Nitto Denko Corporation
Material decomposition technique using x-ray phase contrast imaging system
A phase contrast x-ray imaging system generates an absorption image and a phase shift image of an object under study. The absorption image represents a measurement of the imaged object's attenuation of radiographic energy, and the phase shift image represents a measurement of the imaged object's phase shifting of the radiographic waves passing through the object.
Carestream Health, Inc.
Audio decoder configured to convert audio input channels for headphone listening
The proposed technology provides an audio decoder (100) configured to receive input signals representative of at least two audio input channels. The audio decoder is configured to provide direct signal paths and cross-feed signal paths (10) for the input signals.
Dirac Research Ab
Modifiable signal adjustment devices for power amplifiers and corresponding methods & apparatus
An embodiment of an amplifier system includes a modifiable signal adjustment device with an rf signal adjustment circuit coupled between first and second nodes. The rf signal adjustment circuit includes an adjustable phase shifter and an adjustable attenuator coupled in series with each other.
Freescale Semiconductor, Inc.
Phase detecting circuit for interchain local oscillator (lo) divider phase alignment
Certain aspects of the present invention provide methods and apparatus for detecting phase shift between signals, such as local oscillating signals in adjacent transceiver paths. One example circuit for phase detection generally includes a mixer configured to mix a first input signal having a first frequency with a second input signal having a second frequency to produce an output signal having frequency components at the sum of and the difference between the first and second frequencies; a filter connected with the mixer and configured to remove one of the frequency components at the sum of the first and second frequencies, thereby leaving a dc component; and an analog-to-digital converter (adc) (e.g., a comparator) connected with the filter and configured to determine whether the first input signal is in-phase or out-of-phase with the second input signal based on a comparison between the dc component and a reference signal..
A first switching circuit is connected between a transformer first winding and a dc power supply. A second switching circuit is connected between the transformer second winding and a battery.
Mitsubishi Electric Corporation
Method for controlling a multiphase interleaving converter and corresponding controller
A method is provided for controlling a converter of the multiphase interleaving type. According to the method, there is detected when a change of the load applied to an output terminal of the converter occurs.
Wireless communication terminal
In one implementation, an antenna array has a plurality of antenna element, each of which is configured to apply a phase shift to a signal. A beam steering controller is configured to steer a main beam of the antenna by controlling the phase shifts applied by the antenna elements.
Iridium Satellite Llc
Body biasing for rf switch optimization
Switches comprising a number of transistors in series achieve improved performance through biasing the bodies of the transistors to lower the stack resistance in the on mode and optionally to also lower the stack capacitance in the off mode. These switches find use in rf applications such as phase shifters, step attenuators, and in antenna switches, for example.
Differential twe mzm driver for silicon photonics
A differential twe mzm includes a differential driver, first and second capacitors, and first and second terminations. The differential driver includes a first differential output and a second differential output that collectively form a differential pair.
Phase detecting device and clock data recovery circuit embedded with decision feedback equalizer
A phase detecting device and a clock data recovery circuit are provided. The phase detecting device includes a decision feedback equalizer having first and second sample-hold sub-circuits, an edge detector having a third sample-hold sub-circuit, a first xor gate, and a second xor gate.
National Chiao Tung University
Multiple-input multiple-output orthogonal frequency division multiplexing communication signal compensation
Embodiments of the present invention provide a method for signal compensation, including: receiving, by a receiver via n receiving antennas, a plurality of channel estimation preamble signals sent by m transmitting antennas of a remote transmitter; determining, by the receiver, channel estimation parameters according to the first pilot signals of the m transmitting antennas contained in the plurality of channel estimation preamble signals; receiving, by the receiver, data signals and second pilot signals sent on a first data symbol by the m transmitting antennas; determining, by the receiver, channel phase shift parameters according to signals arrived at the n receiving antennas which come from the second pilot signals; and determining, by the receiver according to the channel estimation parameters and the channel phase shift parameters, signal compensation for the data signals arrived at the n receiving antennas. Accuracy of demodulation for transmitted data to a certain extent is improved..
Huawei Technologies, Co., Ltd.
High data rate optical transport network using 8-psk
Methods, systems, and devices are described for modulating data for optical transmissions and demodulating data from optical transmissions. During modulation, bits are mapped to symbols using an 8-ary modulation scheme.
Llc resonant converter apparatus and method
An output voltage of an llc resonant converter circuit is received. The received output voltage is analyzed to determine whether the received output voltage is within an acceptable operational range.
Continental Automotive Systems, Inc.
Antenna with resonant cavity
The invention relates to an antenna comprising a resonant cavity deliminated by a partially reflecting surface comprising an array of resonant cells, each resonant cell forming a micro-antenna, a totally reflecting surface facing said partially reflecting surface, a radiating source disposed in said resonant cavity and configured so as to radiate a wave between the partially reflecting surface and the totally reflecting surface, said wave illuminating resonant cells of the partially reflecting surface, the partially reflecting surface being curved and resonant cells being individually configured to introduced upon the passage of the incident wave radiated by the source a phase shift dependent on the curvature of the partially reflecting surface at the level of the corresponding resonant cell.. .
UniversitÉ Paris Ouest Nanterre La DÉfense
A noise cancellation signal is generated by generating an ambient noise signal, representing ambient noise, and generating a noise cancellation signal, by applying the ambient noise signal to an feedforward filter, where the feedforward filter comprises a high-pass filter having an adjustable cut-off frequency, and by applying a controllable gain. The noise cancellation signal is then applied to a loudspeaker, to generate a sound to at least partially cancel the ambient noise.
Cirrus Logic International Semiconductor Ltd.
Opto-electric frequency comb generator
An optical comb generator, having a light input port configured to receive a continuous wave light from a laser source and a plurality of phase modulators coupled to the light input port. At least one intensity modulator is coupled to the plurality of the phase modulators, along with a plurality of phase shifters.
Purdue Research Foundation
Simultaneous polarization and wavefront control using a planar device
Methods and device for controlling optical scattering are disclosed. An array of 4-fold asymmetric cylinders can act as optical elements scattering electromagnetic waves, where the orientation and dimension of each optical element is determined according to the desired polarization and phase shift response of the device.
California Institute Of Technology
Low power on-chip impedance detector
An impedance detector for measuring an impedance of a circuit comprises a frequency source, a resistor connected in between the frequency source and the circuit to be measured, a phase shift circuit for applying a phase shift to a signal from the frequency source, a first multiplier for mixing the signal from the frequency source with a signal from the circuit to be measured, a second multiplier for mixing the phase shifted signal with the signal from the circuit to be measured, and a processing circuit for determining an indication of an impedance of the circuit to be measured in dependence on the first mixed signal and the second mixed signal.. .
Dialog Semiconductor B.v.
Absolute position measuring system and method
In a method for determining the absolute position (φ) of a carrier (4) for scale marks (6) of an incremental encoder (2) with respect to a sensor array (12), having segment lengths (l0, l1, l2, . .
Baumuller Nurnberg Gmbh
Multiple-input multiple-output orthogonal frequency division multiplexing communication signal compensation
Embodiments of the present invention provide a method for signal compensation. The method includes: receiving, by a receiver via n receiving antennas, a plurality of channel estimation preamble signals sent by m transmitting antennas of a remote transmitter, wherein the plurality of channel estimation preamble signals contain measurement signals of the m transmitting antennas; determining, by the receiver, channel estimation parameters and channel phase shift parameters according to the measurement signals of the m transmitting antennas of the remote transmitter; and determining, by the receiver, signal compensation according to the channel estimation parameters and the channel phase shift parameters.
Huawei Technologies Co., Ltd.
Wireless communication device and wireless communication method
A wireless communication device including: a plurality of phase shifters, each of the plurality of phase shifters adjusting each amplitude and each phase of each analog signal by each element of a transmission weight vector, each analog signal being generated by multiplexing a plurality of signals that are addressed to a plurality of terminals respectively, a plurality of antennas, each of the plurality of antennas transmitting each analog signal whose phase has been shifted by each of the plurality of phase shifter, and a processor configured to: obtain a plurality of steering vectors that correspond to the plurality of terminals respectively, and generate the transmission weight vector by combining the plurality of steering vectors.. .
Multi-phase motor control apparatus and electric power steering apparatus using the same
A multi-phase motor control apparatus that reduces the occurrence of the vibrations and the noises by setting the shift amount per time more finely after realizing a reduction in processing ability of a cpu by using a one-shunt type current detection circuit and an electric power steering apparatus using the same. The apparatus includes a pwm-signal generating section that generates plural second each-phase pwm-signals within two control periods based on the current estimation value and the carrier signal, and in a case that a phase shift amount of a predetermined phase in a just before control period is zero and a phase shift amount of a predetermined phase in a present control period is not zero, the phase shift control section gradually increases the phase shift amount from zero in the present control period and a next control period, and uses the second each-phase pwm-signals in the next control period..
Hierarchical phase shift array antenna weight look ahead, elaboration, and beam-splitting methods
An array antenna system consists of layered construct of subarrays. Each beam pointing angle requires an antenna weight vector (awv).
Power detector and associated eliminating the difference of i-v phase difference between transmission path and detection path
A power detector for detecting an output power of a power amplifier is provided. The power amplifier is used to transmit signal power to the antenna.
A seat support suspension improving an absorption characteristic of low-cycle vibrations resulting from rolling. A seat support member supporting a seat is provided via a rolling absorption mechanism for absorbing rolling on brackets as a vehicle body side attachment member attached to the vehicle body side.
Delta Tooling Co., Ltd.
Recovering data from quadrature phase shift keying modulated optical signals
Systems, devices and techniques for processing received qpsk modulated optical signals include sampling the received signal at twice the baud rate, thereby producing samples that are then processed as 9-qam symbols using a decision directed least squares optimization method. A third stage of channel equalization is filtering performs channel equalization to mitigate linear filtering effects along the transmission link.
Distributed antenna system for mimo signals
A distributed antenna system includes a multiple-input and multiple-output (mimo) base station configured to output at least a first signal and a second signal. At least one master unit communicates with the mimo base station.
Andrew Wireless Systems Gmbh
Multiphase oscillating signal generation and accurate fast frequency estimation
Certain aspects of the present disclosure provide methods and apparatus for generating multiple oscillating signals having different phases. One example multiphase generating circuit generally includes a first phase shifting circuit configured to phase shift an input signal having an input frequency, such that an output signal of the first phase shifting circuit has a first phase difference with respect to the input signal; a first frequency dividing circuit configured to receive the input signal and output a first set of signals having a first frequency less than the input frequency of the input signal; and a second frequency dividing circuit configured to receive the output signal of the first phase shifting circuit and output a second set of signals having a second frequency less than the input frequency of the input signal.
Phase shift system
The present invention discloses a phase shift system that is used for changing phases of signals transmitted to at least two radiation elements, comprising at least two phase shifters providing signals to the radiation elements, the phase shifter having a phase shift part used for moving so as to change phases of signals passing through the phase shifter. The system further comprises a phase shift drive device that is connected to the phase shift part of each phase shifter for synchronous linkage of all the phase shift parts, such that the phase shift parts move at different velocities to form a differential continuous phase distribution among the signals of the radiation elements.
Comba Telecom Technology (guangzhou) Ltd.
Ultra-responsive phase shifters for depletion mode silicon modulators
A novel phase shifter design for carrier depletion based silicon modulators, based on an experimentally validated model, is described. It is believed that the heretofore neglected effect of incomplete ionization will have a significant impact on ultra-responsive phase shifters.
Coriant Advanced Technology, Llc
Planar optical waveguide element, dual polarization quadrature phase shift keying modulator, coherent receiver, and polarization diversity
A planar optical waveguide element includes: a substrate; and an optical waveguide comprising a core and a cladding, the core being provided on the substrate so as to include first and second core regions arranged in parallel, the cladding having a smaller refractive index than the core. Also, the core forms a preceding-stage mode conversion portion that converts a mode of input light and a subsequent-stage mode conversion portion that converts a mode of light output from the preceding-stage mode conversion portion, and the first and second core regions are spaced apart from each other at an input end of the subsequent-stage mode conversion portion, and a gap between the first and second core regions is continuously decreased along the light waveguide direction such that the first and second core regions are in contact with each other at an output end of the subsequent-stage mode conversion portion..
Systems and methods for driving sealed nebulizers
Various methods, devices, and systems are described for aerosolizing a liquid. Embodiments may include sealing the liquid within a reservoir.
Phase control method, array antenna, and system
A phase control method in the present disclosure includes dividing, by a power divider, the high frequency current into at least two current branches, and separately feeding the at least two current branches into corresponding radio frequency input ports on a digital phase shifter, determining, by the switch controller according to the digital control flow, radio frequency paths that are in the digital phase shifter and for the at least two current branches fed into the digital phase shifter, and controlling the drive voltage to act on the digital phase shifter, and separately establishing, by the digital phase shifter according to the drive voltage and for the at least two current branches, radio frequency paths for currents to flow through, and controlling duration of phase delays for the at least two current branches by controlling lengths of the radio frequency paths through which the at least two current branches flow.. .
Huawei Technologies Co., Ltd.
Method for performing data sampling control in an electronic device, and associated apparatus
A method for performing data sampling control in an electronic device and an associated apparatus are provided, where the method includes the steps of: detecting whether a data pattern of a received signal of a decision feedback equalizer (dfe) receiver in the electronic device matches a predetermined data pattern, to selectively trigger a data sampling time shift configuration of the dfe receiver; and when the data sampling time shift configuration is triggered, utilizing a phase shift clock, rather than a normal clock corresponding to a normal configuration of the dfe receiver, as an edge sampler clock of an edge sampler in the dfe receiver, to lock onto edge timing of the received signal, and controlling the phase shift clock and the normal clock to have different phases, respectively, to shift data sampling time of the dfe receiver, for performing data sampling in the dfe receiver.. .
A circuit arrangement includes an antenna port, a first receiving port, a second receiving port, a first transmission port, and a second transmission port. A number of 90 degree hybrids are configured to transfer an input signal into two output signals that are phase shifted relative to each other.
Analog compensation circuit and method
Disclosed herein are an analog compensation circuit and a method for tuning an analog compensator in full-duplex transmission systems. An embodiment analog compensation circuit includes a secondary receiver configured to receive and convert a sampled self-interference signal to a baseband self-interference signal.
Futurewei Technologies, Inc.
An amplifier includes: a first transistor that includes a first main electrode, a second main electrode, and a first control electrode, a first input signal being input to the first main electrode, a first output signal being output from the second main electrode; a reference potential line that is disposed on a signal line connected to the second main electrode with an insulator interposed therebetween; a first capacitor that is disposed between the first control electrode and the reference potential line; and a first phase shifter configured to shift a phase of a first return current such that the phase of the first return current which flows from the second main electrode to the first control electrode via the reference potential line and the first capacitor has a phase difference, which is greater than 90 degrees and less than 270 degrees, from the phase of the first input signal.. .
Method for testing implicit beamforming performance of a multiple-input multiple-output radio frequency data packet signal transceiver
Method for testing implicit beamforming performance of a multiple-input multiple-output (mimo) radio frequency (rf) data packet signal transceiver device under test (dut). The data packet signals forming the sequential data packet signal transmissions used for beamforming are produced with a selectively varied phase difference and conveyed via internal rf signal paths to external transmit terminals.
Method for transmitting signal field and apparatus therefor
Disclosed is a method for transmitting a signal field in a wireless lan along with an apparatus therefore. The method for transmitting a signal field in a wireless lan includes the steps of: generating a signal field by a first sta (station); and transmitting the signal field to a second sta by the first sta in a first ofdm (orthogonal frequency division multiplexing) symbol, a second ofdm symbol and a third ofdm symbol, wherein at least one of a second binary phase shift keying used in the second ofdm symbol and a third binary phase shift keying used in the third ofdm symbol can be rotated in reference to the first binary phase shift keying used in the first ofdm symbol..
Lg Electronics Inc.
Said technical result is obtained thanks to the fact that in a receiver-transmitter containing active two-face phased arrays comprising transmit-receive modules each one of them including two radiating elements, a transmitter, two receivers, two isolator switches, mixers and a phase shifter, the two-face phased arrays are made unidimensional or two-dimensional, they are arranged in the horizontal plane at an angle of 75-105° to each other while keeping the capability of all-around looking, the transmit-receive module is provided with an additional phase shifter, each one of both phase shifters being permanently connected, via a selector switch, to one of the receivers or to the transmitter, and the transmitter is connected, via a switch and circulators, to the radiating elements with the possibility to be alternately connected to the radiating elements with the use of different frequencies and/or with the use of a different signal coding, corresponding to different frequencies and coding of the receivers receiving mode with the possibility to form at least two independent beams in opposite directions, the active two-side phased arrays being shifted in relation to each other in the horizontal and/or vertical plane.. .
Lc resonant converter using phase shift switching method
A lc resonant converter using a phase shift switching method includes: a switching unit configured to receive a switching signal according to a phase shift control and to perform zero voltage switching (zvs) in a leading leg circuit and a lagging leg circuit when a light load is present; a transformer configured to output an output voltage of the switching unit as a predetermined level of voltage; a resonance circuit unit configured to convert frequency characteristics of an alternating voltage transferred from the transformer; and a bridge rectifying circuit unit configured to rectify the alternating voltage whose frequency characteristics are converted into a direct voltage.. .
Myongji University Industry And Academia Cooperation Foundation
Systems and methods for high power microwave combining and switching
Systems and methods for high power microwave combining and switching are provided. In at least one implementation a system includes a plurality of inputs, wherein there are m inputs in the plurality of inputs and a plurality of phase shifters, wherein there are n phase shifters in the plurality of phase shifters and n is a multiple of two times m, wherein a signal received through the plurality of inputs is divided and coupled to n/m phase shifters.
Honeywell International Inc.
Phase shifter, antenna and radio apparatus
A phase shifter, which reduces the loss of transmission/reception signals, includes: a linear conductor (211); a conductor (212) curved to form an arc of a radius ro; and a conductor (214) that has a curving portion (214a) curved to form an arc of a radius ri, and that also has an extending portion (214b) linearly extending from one end of the curving portion (214a). The phase (phase shift amount) varies depending on the rotation of the conductor (214) about a rotation axis (220) which causes the position of a part (α) where the curving portion (214a) overlaps the conductor (211) to move along the curving portion (214a) and the position of a part (β) where the extending portion (214b) overlaps the conductor (212) to move along the conductor (212)..
Nihon Dengyo Kosaku Co., Ltd.
Image acquisition system, image acquisition method, and inspection system
The invention relates to an image acquisition system and an image acquisition method, as well as to an inspection system having at least one such image acquisition system. A projector projects a pattern on a surface of a sample, a camera records light intensity information from within at least two detection fields defined by the camera on the surface of the sample.
Electromagnetic radiation-scattering element and manufacturing same
The invention relates to an electromagnetic optical element which scatters radiation in a diffuse manner. Such optical elements can be used in nearly all projection applications including front and rear projection, display applications, (cinema) screens and similar.
Fraunhofer-gesellschaft Zur Förderung Der Angewandten Forschung
Method for acquiring and processing marine seismic data to extract and constructively use the up-going and down-going wave-fields emitted by the source
A method for marine seismic surveying includes separating up-going and down-going wavefields from seismic energy emitted by at least one marine seismic energy source. The separated up-going and down-going wavefields are propagated from the at least one marine seismic energy source to at least one of a water surface and a common reference depth.
Pgs Geophysical As