|| List of recent Phase Shift-related patents
| Fractional scaling digital filters and the generation of standardized noise and synthetic data series|
Generation of standardized noise signals that provide mathematically correct noise with no errors and no loss of data, and can generate the noise of specific environments based on the transfer function of that environment are discussed. Various embodiments can generate synthetic data sets based on natural data sets that have similar scaling behavior.
Wright State University
| Oversampling in a combined transposer filterbank|
The present invention relates to coding of audio signals, and in particular to high frequency reconstruction methods including a frequency domain harmonic transposer. A system and method for generating a high frequency component of a signal from a low frequency component of the signal is described.
Dolby International Ab
| Phase contrast imaging using patterned illumination/detector and phase mask|
A modified phase shifting mask is used to improve performance over traditional zernike phase contrast imaging. The configurations can lead to an improved imaging methodology potentially with reduced artifacts and more than one order of magnitude gain in photon efficiency, in some examples.
Carl Zeiss X-ray Microscopy, Inc.
| Distributive source coding and signal processing|
Signal processing, data encoding and/or decoding techniques are applied in a dictionary system. A dictionary is generated as a function of time shift and phase shift distortion.
The Hong Kong University Of Science And Technology
|Method and multi phase shift power converter control|
A method and apparatus for multi phase shift control of a power converter. In one embodiment, the method comprises controlling a phase shift between a left leg and a right leg of a first bridge of the power converter during operation of the power converter; and controlling a phase shift between the first bridge and a second bridge of the power converter during the operation of the power converter, wherein the phase shift between the left and the right legs and the phase shift between the first and the second bridges are controlled based on an input voltage of the power converter and a required output voltage of the power converter..
Enphase Energy, Inc.
|Tunable optofluidic apparatus, method, and applications|
Embodiments include optofluidic apparatus that may be used to detect and manipulate nanoparticles or biomolecules within a fluid. To achieve that result, the embodiments use a fluidic channel located over a substrate.
|Ultra-wideband low-noise amplifier circuit with low power consumption|
An ultra-wideband low-noise amplifier circuit with low power consumption includes a cascode amplifier circuit module and an output combining circuit module. The cascode amplifier circuit module receives an input signal, and outputs a first output signal and a second output signal.
National Chi Nan University
|Electro-optic silicon modulator with capacitive loading in both slots of coplanar waveguides|
Embodiments of the present disclosure provide a high-speed silicon modulator without the microwave mode conversion and provide 50-ohm impedance matching to drivers simultaneously. In one aspect, a device may include an input waveguide region, an optic splitter, two optic phase shifters, an optic splitter, and an output waveguide.
Sifotonics Technologies Co., Ltd.
|Clock data recovery circuit|
Systems and methods for stabilizing clock data recovery (cdr) by filtering the abrupt phase shift associated with data pattern transition in the input signal. The cdr circuit includes a data pattern detector coupled to a data pattern filter.
|Three-dimensional imaging and display system|
A three-dimensional imaging and display system is provided in which input is optically detected in an imaging volume by measuring the path length of an amplitude modulated scanning beam as a function of the phase shift thereof. Visual image feedback concerning the detected input is presented..
Method for determining phase angle in phase shift transformer for medium voltage inverter
A method for determining phase angle in phase shift transformer for medium voltage inverter is disclosed, the method including selecting an arbitrary phase shift angle and phase angle relative to a unit power cell of the first stage, determining a phase angle displacement in consideration of the phase shift angle and the number of unit power cells connected to each phase of a motor, determining a phase angle of the unit power cell at the second stage using a phase angle of the unit power cell at the first stage, and adjusting a phase angle when the determined phase angle of the unit power cell at the second stage exceeds a predetermined phase angle.. .
Lsis Co., Ltd.
Method for operating a forced-induction internal combustion engine with variable compression
In a method for operating a forced-induction internal combustion engine of a motor vehicle with variable compression, provision is made that the variable compression is pilot-controlled in such a way that a selected compression is established as a function of combustion efficiency and of the mechanical stress on components of the internal combustion engine, such that elevated compression is provided in the naturally aspirated range and/or decreased compression is provided in the forced-induction range. The variable compression is generated by phase shifting of a camshaft of the internal combustion engine, or by cam switching by way of a variable valve train..
Robert Bosch Gmbh
Transmitter, receiver, and controlling methods thereof
A transmitter and receiver of a broadcast signal and corresponding methods are provided. The transmitter includes: a preamble symbol inserter configured to insert a preamble symbol including a synchronization part and an information part into a frame; and a transmitting unit configured to transmit the frame including the preamble symbol.
Samsung Electronics Co., Ltd.
Calibration of quadrature imbalance via loopback phase shifts
Apparatuses, systems, and methods for calibration of quadrature imbalance in direct conversion transceivers are contemplated. A transceiver controller may perform a self-calibration to address quadrature imbalance.
Beam forming and steering using lte diversity antenna
An antenna system, which is coupled to one or more first transceivers for processing signals according to one or more protocols, respectively, and to a second transceiver for performing a function in conjunction with at least one of the one or more protocols, is provided. The antenna system includes a first antenna, a second antenna, a circuit coupled to the first and second antennas, and a controller configured to control the circuit for enabling beam forming and beam steering or for enabling the function in conjunction with the at least one of the one or more protocols.
Phase shifter and shifting phase of signal
Provided is a phase shifter for shifting a phase of a signal the phase shifter including an input unit to split an input signal into a plurality of signals having different phases, a connection unit to change at least one of magnitudes and phases of the plurality of signals, apply the changed plurality of signals to a plurality of loads, and receive a plurality of return signals generated when the applied signals are returned by the plurality of loads, and an output unit to generate an output signal having a predetermined phase difference from the input signal based on the return signals.. .
Electronics And Telecommunications Research Institute
Apparatus and at-bit resistivity measurements
An apparatus for making resistivity measurements near a drill bit includes a tool body, a transmitter deployed on the tool body, a receiver deployed on the tool body and at an axial distance from the transmitter, and a transmitting signal coupler coupled to the transmitter antenna and the receiver. The transmitter generates electrical signals and converts the electrical signals into electromagnetic signals to be transmitted.
Non-invasive radio frequency liquid level and volume detection system and method using phase shift
A medical fluid system includes a container holding a fluid at a level; and a radio frequency level sensor operably connected to the container and including an emitting electrode and a receiving electrode, the electrodes operating as a transmission line having an electrical impedance that varies with the level or volume of the fluid in the container, the level sensor configured to measure a phase shift of the transmission line, the phase shift indicative of the level or volume of the fluid in the container.. .
Baxter Healthcare Sa
Preserving phase shift in spatial filtering
For preserving phase shift in spatial filtering is disclosed, an electronic device includes a microphone array. A filtering module spatially filters a plurality of received audio signals from the microphone array to increase the signal-to-noise ratio in one or more corresponding output audio signals.
Lenovo (singapore) Pte, Ltd.
Surrounded antenna having a phase shifter therein
A surrounded antenna includes a radiation patch comprising a closed slot and a surface current path of a predetermined width surrounding the closed slot; a phase shifter comprising at least one short-circuit path (short stub) segment and at least one open path (open stub) segment, each short-circuit path (short stub) segment being connected between two internal contacts of the surface current path, each open path (open stub) segment comprising opposing connection end and open end, the connection end being to the surface current path; a grounded patch spaced apart from the radiation patch at a predetermined distance; and a feeding point located at one short-circuit path (short stub) segment and connected to the grounded patch through at least one hole. Thus, the phase shifter can offset the phase between surface current paths, achieving in-phase radio signal strength enhancement..
Shun-fu Technology Corp.
Devices for providing phase adjustments in multi-element antenna arrays and related methods
Multiple phase shifting elements which include electrically conductive, slidable tuning members may be placed on a single circuit board. The elements may be used to adjust the phase of signals propagating through a multi-element antenna array..
Radio Frequency Systems, Inc.
Amplitude modulation to phase modulation (ampm) distortion compensation
To generate amplitude modulation to phase modulation (ampm) predistortion data that compensates for phase distortion in a power amplifier of a communication device, a test signal is amplified via the power amplifier. The amplified test signal is combined, by wave superposition, with a reference oscillator signal into a resultant signal.
Mstar Semiconductor, Inc.
Methods and devices for improving power amplifier efficiency
Devices and methods to reduce adjacent channel power of an amplifier are described. The adjacent channel power can be reduced by considering the third harmonic output from the amplifier, and minimizing such third harmonic amplitude by implementing a phase shifter feedback circuit to the amplifier.
Peregrine Semiconductor Corporation
An electric machine, including a set of at least six windings, voltage supply devices capable of supplying an electrical phase, and a circuit for controlling the voltage supply devices controlling phase shifts between the phases supplied by the voltage supply devices, each voltage supply device supplying a phase at the end common to two windings, the other end of the two windings being supplied by one of the two voltage supply devices supplying a phase of which the phase shift with the phase supplied by the voltage supply device is one of the two lowest, in terms of absolute value, among the phase shifts supplied by the voltage supply devices and the phase supplied by the voltage supply device.. .
Ge Energy Power Conversion Technology Ltd
Secondary pulse tubes and regenerators for coupling to room temperature phase shifters in multistage pulse tube cryocoolers
Pulse tube refrigeration or cooling systems are described which utilize a secondary regenerator or a secondary pulse tube. Use of such a secondary regenerator or pulse tube enables a commercially available pressure oscillator to be incorporated in the cooling system.
The National Institute Of Standards And Technology
Simulator for simulating the operation of a fiber optic gyroscope
A method includes simulating operation of a fiber optic gyroscope during a digital simulation. The simulation includes performing an iterative loop that includes simulating an intensity of light from a fiber coil of the fiber optic gyroscope and simulating operation of one or more control loops within the fiber optic gyroscope using the simulated intensity of the light.
Tunable dbr laser and a operating a tunable dbr laser
A tunable dbr laser including: an amplifier section, a part-reflecting optical output, a connection section connected to the amplifier section, and at least two wavelength-selective reflectors optically coupled to the amplifier section via the connection section. The connection section includes at least one mmi coupler and several waveguides, so that different optical paths lead from the amplifier section to the wavelength-selective reflectors and each of the different optical paths leads through the at least one mmi coupler and through one of the waveguides.
Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.
Resonant power converters using impedance control networks and related techniques
An impedance control resonant power converter (converter) operated at a fixed switching frequency includes an impedance control network (icn) coupled between two or more inverters operated at a fixed duty ratio with a phase shift between them and one or more rectifiers. The phase shift is used to control output power or compensate for variations in input or output voltage.
Massachusetts Institute Of Technology
Capacitive sensing apparatus and methods
One or more waveform generators impose an input waveform across touch sensor components. phase shift detection logic measures a phase shift between the input waveform and an output waveform component associated with each waveform generator appearing across a touch sensor component.
Texas Instruments Deutschland Gmbh
Aperiodic phased array antenna with single bit phase shifters
An antenna array can include multiple radiating cells, each comprising a radiating element and a phase shifter. Further, each radiating element can comprise a first radiating element port and a second radiating element port.
Methods and systems for using a differential light drive in a physiological monitor
A physiological monitoring system may use a differential light drive to illuminate one or more light sources. A differential light drive may include applying two signals, one to each terminal of a light emitting diode or other light source, such that the illumination of the light source is controlled by the difference between the two light drive signals.
Co2 laser with rapid power control
Subject matter of the invention is a co2 laser that permits a rapid power modulation, particularly a highly efficient q-switching. The key concept is the sub-division of the resonator into a high-power branch, containing inter alia the active medium (1), and a low-power feedback branch (14), in which the power-sensitive beam-shaping elements, particularly the modulators, are arranged.
Iai Industrial Systems B.v.
Four-direction switch device
In a four-direction switch device, an outer peripheral surface of a disc-shaped switch knob is provided with first to fourth pivot projections arranged in phase with first to fourth switch operation parts and first to fourth movable stoppers arranged with a phase shift by 45° from the projections, respectively, and a switch case is provided with first to fourth fixed stoppers facing lower surfaces of the movable stoppers, respectively. If the knob is pushed at a switch dead part, the knob swings about a straight line connecting a pair of the pivot projections located on an opposite side of the switch dead part, but the movable stopper and the fixed stopper both located below the pushed switch dead part come into contact with each other, thereby avoiding actuation of any switch..
Honda Motor Co., Ltd.
Device for the variable control of at least one valve, for example for a reciprocating engine
A device for controlling at least one valve, the device comprising a body having a non-deformable cavity communicating exclusively with the outside via at least four rectilinear cylinders that are closed respectively by an opening piston (p1) actuated by an opening cam (c1), a closing piston (p2) actuated by a closing cam (c2), a shuttle piston (pa) serving to load or unload the device, and a piston (ps) that is mechanically connected to the valve. By adjusting the angular phase shift between the opening and closing cams (c1, c2), the control device of the invention makes it possible in operation to adjust the lift of the valve, the angular duration of the opening of the valve, and if necessary, to deactivate the valve completely throughout the duration of a cycle..
Apparatus and estimating intra-channel nonlinear damage
An apparatus and method for estimating intra-channel nonlinear damage, including: a first determining unit configured to determine a nonlinear phase shift weighting dispersion distribution function of an optical fiber transmission link according to a parameter of the optical fiber transmission link; a segmenting unit configured to segment the nonlinear phase shift weighting dispersion distribution function of the optical fiber transmission link into at least one rectangle; a calculating unit configured to respectively calculate a nonlinear perturbation coefficient of each rectangle in the at least one rectangle, and perform summation on the nonlinear perturbation coefficients of all the rectangles, so as to obtain a nonlinear perturbation coefficient of the optical fiber transmission link; and a second determining unit configured to determine intra-channel nonlinear damage of the optical fiber transmission link according to the nonlinear perturbation coefficient of the optical fiber transmission link.. .
Optical semiconductor device
An optical semiconductor device is provided as one achieving reduction of power in phase control. The optical semiconductor device has: a first optical waveguide having a plurality of segments each of which has a diffraction grating region with a diffraction grating and a space portion coupled to the diffraction grating region, having two ends interposed between the diffraction grating regions, and having a constant optical length, wherein at least one of the segments is provided with a phase shift structure; a first phase control device for adjusting a phase of light in each segment with the phase shift structure; and a second phase control device for adjusting a phase of light in each segment without the phase shift structure..
Sumitomo Electric Industries, Ltd.
Transmitter and signal transmitting method thereof
A signal transmitter and receiver are provided. The transmitter includes: a multiple input multiple output (mimo) precoder configured to, in response to a first input signal and a second input signal, generate a first transmission signal and a second transmission signal by performing mimo precoding by pre-phase shifting or pre-phase shifting/hopping the second input signal, and superposition encoding the first input signal and the pre-phase shifted or pre-phase shifted/hopped second input signal; and an orthogonal frequency division multiplexing (ofdm) modulator configured to ofdm modulate the first transmission signal and the second transmission signal..
Samsung Electronics Co., Ltd.
Simultaneous transmit and receive (str) structures immune to phase and amplitude imbalances
An echo-canceling unit for a simultaneous transmit and receive (str) system includes at least three phase shifters in which each respective phase shifter is coupled to a transmit signal to generate an output signal comprising a selected phase shift with respect to the transmit signal. A weight calculation unit generates a corresponding amplitude-weight signal for the output signal of the phase shifter.
The present disclosure proposes an input power of each unit power cell of a cascaded h-bridge inverter that is mutually insulated. To this end, the present disclosure includes a phase shift transformer configured to output a voltage of predetermined phase by receiving an ac input power having a fixed frequency, and a plurality of unit power cells serially-connected configured to output a voltage having a predetermined phase by receiving a voltage provided by the phase shift transformer, wherein the phase shift transformer is configured to include the number of phase shifts corresponding to the number of the plurality of unit power cells..
Lsis Co., Ltd.
Multi-level medium-voltage inverter
A multi-level medium-voltage inverter that receives three-phase power and outputs a three-phase voltage to a three-phase motor, includes: a plurality of unit power cells connected in series to output a single phase voltage, individual unit power cells each having a phase voltage forming a single level to configure multiple levels; and a module-type phase shift transformer configured to convert the three-phase power and applying the converted power to three unit power cells constituting one level, wherein the module-type phase shift transformer includes a plurality of modules.. .
Lsis Co., Ltd.
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
Image processing device and method
The present disclosure relates to image processing devices and methods that can increase encoding efficiency in encoding or decoding motion vectors in cases where an input is an interlaced signal. The current pu and the reference pu to be referenced by the motion vector information about the current pu belong to top fields.
Coherence scanning interferometry using phase shifted interferometrty signals
Low-coherence scanning systems and methods for operating the same include simultaneously measuring two phase-shifted interferograms corresponding to intensity patterns produced by interfering test light reflected from a test object with reference light on respective first and second detectors, in which the test light and reference light are derived from a common source. The interferograms measured by the first detector define a first set of scanning interferometry signals, and the interferograms measured by the second detector define a second set of interferometry signals corresponding to substantially the same multiple transverse locations on the test object, in which each interferometry signal in the second set is phase-shifted relative to a corresponding interferometry signal in the first set.
Surface antenna with a single radiation element
A surface antenna with a single radiation element, which comprises (a) a power source with first and second poles; (b) a phase shifting element, inserted to the path of one of the poles of the power source in such a manner that the phase shifting device shifts the phase of a first signal propagating through said pole such that the shifted phase of the first signal will be essentially identical to the phase of a second signal propagating through the other pole. The shifted first signal is added to the second signal with essentially the same phase of second signal, whenever both poles are connected together to form a single-wire, through which the resulting added signal propagates.
Power-dividing and/or power-combining circuits with isolation
Power-dividing and/or power-combining circuits have inputs, outputs, and at least three electrical pathways, with substantially equal input and output reflection coefficients. An electronic device may be provided in each of the pathways.
U.s. Army Research Laboratory Attn: Rdrl-loc-i
A directional coupler for use in a predetermined frequency band includes a laminate body including a laminate of a plurality of insulation layers, a first terminal through a fourth terminal disposed on a surface of the laminate body, a main line connected between the first terminal and the second terminal and disposed on the insulation layer, a first sub-line connected to the third terminal, electromagnetically coupled with the main line, and disposed on the insulation layer, a second sub-line connected to the fourth terminal, electromagnetically coupled with the main line, and disposed on the second sub-line, and a phase adjusting circuit connected between the first sub-line and the second sub-line and configured to cause a phase shift on a passing signal. The main line, the first sub-line and the second sub-line do not overlap each other in a plan view from a direction of lamination..
Murata Manufacturing Co., Ltd.
System and a transformer and a phase-shift network
In accordance with an embodiment, a circuit includes a magnetic transformer having a first winding coupled between a first signal node and a second signal node, and a second winding coupled between a first reference node and a current measurement node. A phase shift network is coupled between the second node and a voltage measurement node, and the circuit is configured to indicate an impedance matching condition based on an amplitude difference and a phase difference between the voltage measurement node and the current measurement node..
Infineon Technologies Ag
Conversion circuit for converting complex analog signal into digital representation
A conversion circuit for converting a complex analog input signal having an in-phase (i) component and a quadrature-phase (q) component is disclosed. It comprises a channel-selection filter configured to filter the complex analog input signal, thereby generating a channel-filtered i and q components, and one or more processing circuits.
Telefonaktiebolaget L M Ericsson (publ)
Mach-zehnder interferometer type optical modulator
A mach-zehnder interferometer type optical modulator includes a first end facet and a reflecting portion opposing the first end facet; a single optical coupler including input and output ports, the optical coupler being disposed between the first end facet and the reflecting portion; first and second optical waveguides that are connected to the input ports of the optical coupler; third and fourth optical waveguides that are connected to the output ports of the optical coupler; and a phase shifting section disposed between the optical coupler and the reflecting portion. The phase shifting section includes a first optical waveguide structure constituting part of the third optical waveguide; a first upper electrode on the first optical waveguide structure; a second optical waveguide structure constituting part of the fourth optical waveguide; and a second upper electrode on the second optical waveguide structure..
Sumitomo Electric Industries, Ltd.
Electro-optical phase shifter having a low absorption coefficient
A semiconductor electro-optical phase shifter may include a central zone configured to be placed in an optical waveguide and doped at a first conductivity type, a first lateral zone adjacent a first face of the central region and doped at a second conductivity type, and a second lateral zone adjacent a second face of the central zone and doped at the second conductivity type.. .
Device echo cancellation
A device echo cancellation system and process are disclosed. According to one embodiment, the present invention comprises an input audio source that is converted to a digital signal via a pcm convertor where the amplitude of the input audio source is sampled at regular intervals and translated into digital pcm audio.
Max Sound Corporation
Transmitting unit for a magnetic resonance imaging system
A transmitting unit for a magnetic resonance imaging system includes a signal generating unit, an amplifier connected downstream of the signal generating unit, a power splitter connected downstream of the amplifier, and a plurality of electrically decoupled transmitting coils connected downstream of the power splitter. A connectable phase shifter is arranged between the power splitter and at least one transmitting coil of the plurality of electrically decoupled transmitting coils..
Semiconductor device resolution enhancement by etching multiple sides of a mask
A mask is disclosed which includes a plurality of first phase shift regions disposed on a first side of the mask, and a plurality of second phase shift regions disposed on a second side of the mask. The first phase shift regions and second phase shift regions may be alternating phase shift regions in which phase shift of the first phase shift regions is out of phase, for instance by 180 degrees, from phase shift of the second phase shift regions.
A method for processing a received digital signal includes generating a clock signal used for sampling the received signal by comparator which compares the received signal to a reference. A phase shifter adjusts the phase of the first clock signal to maximize the vertical eye opening of the signal at the sampling time.
Maxim Integrated Products, Inc.
Power dividing and/or power-combining circuits
Power-dividing and/or power-combining circuits have inputs, outputs, at least three electrical pathways, and at least three electronic devices, such as amplifiers, with substantially equal input and output reflection at least one of the electronic devices is in each of the electrical pathways. In one embodiment, multiple phase shift components, such as delay lines, are electrically connected to the electronic devices in each of the electrical pathways.
U.s. Army Research Laboratory Attn: Rdrl-loc-i
Technique for enhancing the power output of an electrostatic generator employing parametric resonance
A circuit-based technique enhances the power output of electrostatic generators employing an array of axially oriented rods or tubes or azimuthal corrugated metal surfaces for their electrodes. During generator operation, the peak voltage across the electrodes occurs at an azimuthal position that is intermediate between the position of minimum gap and maximum gap.
Lawrence Livermore National Security, Llc
Dynamic viscoelasticity as a rapid single-cell biomarker
The present invention generally relates to a method for determining the dynamic viscoelastic properties of cells, more particularly to a method for rapidly determining the dynamic viscoelastic properties of healthy and unhealthy cells by determining the phase shift be the application of a modulating force to the cells and the cells' response to the modulating force.. .
Colorado School Of Mines
Contactless determining the ray of a beam, corresponding system
The invention relates to a method for measuring a ray r0 of a radiation beam (20), characterized in that it comprises the steps according to which a source (2) of a radiation beam (20) excites (s1) a standard member (1) via heat, in a periodic manner at a frequency (f), thereby obtaining a periodic thermal excitation of the standard member (1); a sensor (3) measures (s2) a periodic in thermal response on the part of the standard member, in response to the periodic thermal excitation; a processor (4) determines (s3) a phase shift (φ) between the periodic thermal excitation and the periodic thermal response; the source (2) exciting the standard member for a plurality of frequencies (f) and the processor (4) determining a phase shift for each frequency (f), and thereby determining a plurality of phase shifts (φ); the processor (4) determines (s4) a minimum φ min of the phase shift (φ) thanks to the plurality of phase shifts determined in this manner, and determines (s5) the ray r0 of the beam (20) via the following formula: r0=Δ/g(φmin) where Δ is the thickness of the standard member (1) and where g is a function dependent on the type of heat radiation beam (20).. .
Transceiver, method, computer program and communication device
A transceiver is disclosed comprising a transmitter; a receiver; and a signal transmission arrangement. The transmitter comprises a power amplifier, and the signal transmission arrangement is arranged to transmit signals provided from the transmitter through its power amplifier, and arranged to receive signals and provide them to the receiver.
Circuit for the inductive heating of a metal
The invention relates to a circuit for the inductive heating of a metal that is optionally embedded in a non-magnetic bed by means of a transformer. The transformer induces eddy currents in the metal as a function of an exciter current il and an exciter voltage ul and forms a load impedance xl together with the metal to be heated.
Beamforming modular phased antenna array
Generally, this disclosure provides systems and methods for modular antenna array beamforming with controllable antenna module delay for improved beam steering accuracy. A system may include a plurality of antenna modules, each of the antenna modules comprising an array of antenna elements coupled to an rf beamforming circuit, the rf beamforming circuit to adjust phase shifts associated with the antenna elements to generate an antenna beam associated with the antenna module; a delay circuit coupled to each of the antenna modules; and a central beamforming module coupled to each of the delay circuits, the central beamforming module to control the antenna beam associated with each of the antenna modules and further to adjust signal delays associated with the delay circuits, wherein the arrays of antenna elements of the antenna modules combine to operate as a composite antenna beamforming array..
System and an optical coupler
In one embodiment, an optical directional coupler includes an input terminal configured to receive an input optical signal and a first coupler optically coupled to the input terminal, where the first coupler has a first coupling length, and where the first coupler is configured to couple a first portion of the input optical signal to a first optical leg and a second optical portion of the input optical signal to a second optical leg. The optical directional coupler also includes the first optical leg, where the first optical leg is configured to phase shift the first portion of the optical signal to produce a first phase shift signal and the second optical leg, where the second optical leg is configured to phase shift the second portion of the optical signal to produce a second phase shift signal, and where the first phase shift signal has a phase difference relative to the second phase shift signal.
Positive coefficient dynamic electro-optical phase shifter
A semiconductor electro-optical phase shifter may include an optical action zone configured to be inserted in an optical waveguide, and a bipolar transistor structure configured so that, in operation, collector current of the bipolar transistor structure crosses the optical action zone perpendicular to the axis of the optical waveguide.. .
Adaptive phase shift apparatus and method
The invention discloses an adaptive phase shift method in a multi-carrier system, comprising: generating a group of one or more new phase values for corresponding one or more phase shift carriers, pscs, based on quantization phase values; calculating and comparing a backward maximum power in an evaluation path with the group of one or more new phase values in one timeslot and a forward maximum power in a working path with current phase values in the timeslot; and adjusting phase of the pscs based on the group of one or more new phase values if the calculated backward maximum power is less than the calculated forward maximum power. An adaptive phase shift apparatus is also disclosed.
Demodulation in vamos receivers
A desired signal and interfering signal are transmitted in the same timeslot and on the same frequency using an adaptive quadrature phase shift keying (aqpsk) modulated carrier. When the subchannel power imbalance ratio (scpir) for the aqpsk modulated carrier is large and favors the interfering signal, sic is used to cancel the interfering signal from the received signal.
Optical object recognition system
An optical object recognition system includes at least two beacons, an image sensor and a processing unit. The beacons operate in an emission pattern and the emission pattern of the beacons has a phase shift from each other.
Electromagnetic wave propagation disruption device and producing same
An electromagnetic wave propagation disruption device with a metamaterial structure including: a plurality of conductive elements arranged on a top face of a substrate; a plurality of interconnection networks electrically interconnecting at least some of these conductive elements, wherein these networks are not electrically connected to each other. At least two of these networks are dimensioned differently to each other, thus involving that distances between interconnected conductive elements are different from one network to another, to generate phase shifts, between the conductive elements interconnected thereby, different from one network to the other.
A system and method of calibrating an amplifier are presented. The amplifier has a first amplification path and a second amplification path.
Hand-held test meter with time-multiplexed phase detection
A hand-held test meter for use with an analytical test strip in determining an analyte in a fluid sample includes a housing retaining a microcontroller block and a phase-shift-measurement block. The measurement block includes a signal-generation sub-block that provides an excitation voltage signal; an interface sub-block that receives the analytical test strip and permits applying the voltage excitation signal to the test strip to provide a resultant current signal; a transimpedance conversion sub-block that receives the resultant current signal and provides a resultant voltage signal; and a phase detector responsive to the resultant voltage signal and a reference signal.
A sub-harmonic mixer comprising a mixer circuit with input ports for rf and lo signals, and an output port for the product of the signals at the input ports, and an lo switching stage with input ports for an lo signal and the lo signal phase shifted 180 degrees. The lo switching stage comprises a third input port to which the output port of the mixer circuit is connected and a first output port for the product of the signal at its third and first input ports, and a second output port for the product of the signal at the third and second input ports with the same amplitude as the first output signal 180 degrees phase shifted.
System and an optical phase shifter
In one embodiment, an optical phase shifter includes a first phase-shifter configured to phase shift a transverse electric (te) component of an optical signal by a first phase-shift to produce a te component of a first signal, and a transverse magnetic (tm) component of the optical signal by a second phase-shift to produce a tm component of the first signal. The optical phase-shifter includes a polarization-rotator configured to rotate the te component of the first signal to produce a tm component of a rotated signal, and the tm component of the first signal to produce a te component of the rotated signal.
Differential phase tracking in the presence of unknown interference
Example embodiments comprise a diversity receiver, and corresponding method, for measuring a differential phase between a first local oscillator of a first antenna and a second local oscillator of a second antenna in the presence of a primary interference signal and at least one secondary interference signal. The method may comprise receiving a primary communication signal, a primary reference signal and additional reference signals, and processing these signals such that a summation signal does not substantially comprise the at least one secondary interference signal.
Half-duplex phased array antenna system
In an exemplary embodiment, a phased array antenna comprises a bidirectional antenna polarizer and is configured for bidirectional operation. The bidirectional antenna polarizer may combine active implementations of power splitters, power combiners, and phase shifters.