|| List of recent Phase Shift-related patents
|Electrically small, super directive antennas|
An electrically small receiver system is provided. The receiver system includes a plurality of antennas and a signal processing circuit.
|Nanomechanical photonic devices|
Devices which operate on gradient optical forces, in particular, nanoscale mechanical devices which are actuable by gradient optical forces. Such a device comprises a waveguide and a dielectric body, with at least a portion of the waveguide separated from the dielectric body at a distance which permits evanescent coupling of an optical mode within the waveguide to the dielectric body.
|Method for concealing a synthetic hologram in a binary image|
The invention relates to a synthetic hologram (64a) comprising first elementary cells wherein first openings are respectively defined, said hologram being integrated into a first portion of a binary motif (60), said binary motif comprising at least one second portion wherein second elementary cells comprising second openings (66) are defined, said second openings having an average size equal to the average size of the first openings, with a 5% margin, and a random phase shift.. .
|Tri-column adjustable azimuth beam width antenna for wireless network|
A tri-column antenna array architecture, containing a plurality of active radiating elements that are spatially arranged on a modified reflector structure is disclosed. Radiating elements disposed along (p1 and p2) outlying center lines are movable and provided with compensating radio frequency feed line phase shifters so as to provide broad range of beam width angle variation of the antenna array's azimuth radiation pattern..
|Radar sensor for motor vehicles|
A radar sensor for motor vehicles, having a transmitting antenna in the form of a planar group antenna having multiple antenna elements situated side by side on a shared planar substrate, and having a feed network and a switching device for supplying microwave power to the antenna elements. The antenna elements are situated at equal distances in at least one row; the feed network is designed for supplying the antenna elements with the microwave power having a phase shift which increases at constant increments from one end of the row to the other; and the switching device is designed for controlling the supply of the microwave power to the antenna elements in such a way that, depending on the operating mode, the supply is implemented in a mirror-inverted fashion from opposite ends of the at least one row..
|Vswr tolerant tunable hybrid duplexer|
The disclosure describes a dual hybrid duplexer including two hybrid couplers, two intra-filters, a tunable isolation load, and a phase shifter. The phase shifter may be located at the isolation port.
|Method and apparatus to determine a subject-specific b1 distribution of an examination subject in a measurement volume of a magnetic resonance apparatus|
In a magnetic resonance method and apparatus to determine a subject-specific b1 distribution of an examination subject in a measurement volume in the magnetic resonance apparatus, a first measurement data set of the examination subject is acquired using a first pulse sequence, a second measurement data set of the examination subject is acquired using a second pulse sequence, and a third measurement data set of the examination subject is acquired using a third pulse sequence. A first phase is determined from the first measurement data set, a second phase from the second measurement data set and a third phase from the third measurement data set.
|Means and method for aligning hall sensors location in a brushless dc motor with hall sensors|
A method for aligning hall sensors location in a brushless dc motor with hall sensors, the method comprises driving the motor by a sensorless driving system for getting a first commutation phase signal; sending said first commutation phase signal to a sensorless position control unit to be processed thereby for getting an optimal commutation phase point, processing a hall sensor signal as said motor is running by a hall sensor circuit unit for getting a second commutation phase signal, and comparing said second commutation phase signal with said optimal commutation phase point by a signal comparing and processing unit to get a phase shifting data for aligning said hall sensors location.. .
|Method and apparatus for compensating for phase shift in a communication device|
A method and apparatus for compensating is described, in which a tuning network is electrically coupled to an antenna and to a phase shift network. Baseband signals travel to and from the phase shift network.
|Phase shift device and method|
A phase shift device includes an input quadrature junction for receiving an input em signal and extracting a first electromagnetic (em) signal, a second em signal, a third em signal, and a fourth em signal from the input em signal. Four waveguide arms are operatively connected to the input quadrature junction for respectively conveying the first, second, third, and fourth em signals therethrough.
|Adjustable power splitter and corresponding methods & apparatus|
An adjustable power splitter includes: a power divider with an input and a first and second divider output; a first adjustable phase shifter and first adjustable attenuator series coupled to the first divider output and providing a first power output; a second adjustable phase shifter and second adjustable attenuator series coupled to the second divider output and providing a second power output; an interface; and a controller. The controller is configured to receive, via the interface, data indicating phase shifts to be applied by the first and second adjustable phase shifters and attenuation levels to be applied by the first and second adjustable attenuators, and to control, based on the data, the phase shifts and attenuation levels applied by the first and second adjustable phase shifters and the first and second adjustable attenuators..
|Phase plate for a tem|
The phase plate is equipped with a film in the form of an annulus, carried by a much thinner film. As a result only in a small spatial frequency range (for low frequencies) the phase is changed (and thus the ctf), and for other spatial frequencies the phase shift is negligible, and thus the ctf remains unchanged.
|Interference cancellation system|
Systems and methods for cancelling interference from a received signal in order to properly detect a signal of interest are disclosed. A combined signal of interest plus interference signal may be received.
|Photomask blank, method for manufacturing photomask, and method for manufacturing phase shift mask|
A light-shielding film 2 formed on a transparent substrate 1 has a monolayer structure or a multilayer structure. At least one layer is formed by film-formation with a chromium-containing material including tin.
|Half-tone phase shift mask blank and method for manufacturing half-tone phase shift mask|
A half-tone phase shift film 2 and a light-shielding film 3 are stacked on transparent substrate 1. The light-shielding film 3 has a monolayer structure or a multilayer structure.
|Multiple interferer cancellation for communications systems|
An interference cancellation system (ics) may be used with a communication system to prevent or minimize interference from one or more sources. The ics may receive radio rf signals comprised of one or more signals of interest (soi) and multiple interfering signals.
|System and method for digital signaling|
Systems and methods for communicating digital data associated with amplitudes and phases of a virtual periodic waveform having a designated period between components connected by n conductors include, in one embodiment, circuitry that converts a first amplitude and a first phase to a first corresponding voltage or current and applies the first corresponding voltage or current to a first one of the plurality of conductors, and converts the first amplitude and the first phase to (n−1) corresponding voltages or currents based on amplitudes of the periodic waveform phase shifted by about m*(360/n) relative to the first phase where m is indexed from one to (n−1) and applies each corresponding voltage or current to an associated conductor of the plurality of conductors. The systems and methods are particularly suited for reducing the number of conductors to obtain a desired i/o data rate/throughput for integrated circuit chips and wired networks..
|Antenna device and wireless communication apparatus|
The antenna device includes a first antenna 11 that includes a first ground terminal 12; a second antenna 18 that includes a second ground terminal 20; a ground conductor 28 to which the first antenna 11 is connected through the first ground terminal 12 and the second antenna 18 is connected through the second ground terminal 20; and a phase shifter 24 that controls a phase difference between a first current ie1 and a second current ie2. The phase shifter 24 controls the phase difference between the first current ie1 and the second current ie2 so that the first current ie1 and the second current ie2 have components to cancel each other..
|Mobile radio antenna comprising a multi beam forming device|
A mobile radio antenna comprises a multi beam forming device which comprises a drivable drive element having a drive shaft and at least two output shafts. Each output shaft is substantially parallel to the drive shaft.
|Circut and method for generating periodic control signals, and microscope and method for controlling a microscope|
A circuit is configured to generate periodic control signals including at least two mutually phase-shifted control signals. The circuit includes a plurality of generator circuits, where a separate generator circuit is provided for each control signal output by the circuit.
|Method and device for electrically exciting an actuator for an ultrasonic motor|
The invention relates to a method for electrically exciting a piezoelectric actuator of an ultrasonic motor having a mechanical resonance frequency fm, wherein the ultrasonic motor has at least one acoustic standing wave generator, which comprises an exciter electrode and a general electrode, wherein a capacitance co is developed between the exciter electrode and the general electrode. According to the invention, the method comprises the following steps: applying a rectangular exciter voltage ug to the exciter electrode and the general electrode of the at least one acoustic standing wave generator, wherein the frequency of the rectangular exciter voltage ug differs from the mechanical resonance frequency fm of the actuator; providing a voltage ug with the aid of a feedback element, wherein the voltage ug is proportional to a current ig flowing through the standing wave generator, wherein said current is the sum of a piezoelectric current ip and a charging and discharging current ic of the capacitance co; separating a voltage up from a voltage uc with the aid of a pulse filter, wherein the voltage up is proportional to the piezoelectric current ip and the voltage uc is proportional to the charging and discharging current ic of the capacitance co; and changing the frequency of the rectangular exciter voltage in such a way that the phase shift between the piezoelectric current ip and the rectangular exciter voltage ug is substantially zero.
|Digital holography device and image generation method using digital holography|
A digital holography device (1) which is capable of measuring a subject with high accuracy by correcting intensity unevenness by accurately removing zeroth-order diffracted light, includes: a hologram generating section (26) for generating a first hologram and a second hologram each obtained by extracting components identical in phase shift amount from a polarizer array hologram which is recorded in an image capturing device (7) mounted with a polarizer array (6); a dividing section (3) for dividing the first hologram into a plurality of first regions, and dividing the second hologram into a plurality of second regions; a comparing section (4) for comparing a first average value of an intensity in a first region of the first hologram and a second average value of an intensity in a second region of the second hologram which region corresponds to the first region; and a correcting section (5) for, in a case where the first average value and the second average value differ, correcting at least one of the first average value and the second average value so that the first average value and the second average value are equal.. .
|Patient monitoring and surveillance system, methods, and devices|
Provided herein are methods, devices and systems for the remote monitoring and/or surveillance of a patient's location, position, movement, vital signs, biopotentials, or a combination thereof using transmission of stepped-frequency radar signals, detecting reflections of the transmitted signals and processing the frequency and phase shifts.. .
|Antenna system and method for mitigating multi-path effect|
An antenna system and method utilize a splitter electrically connectable to a single antenna for splitting an rf signal into two signals. A variable phase shifter shifts the phase of one of the signals.
|Method and apparatus for eliminating direct current offset|
The present invention provides a method and an apparatus for eliminating direct current offset. The method comprises the steps of: calculating euclidean distances between every two demodulation symbols of a plurality of demodulation symbols based on quadrature phase shift keying (qpsk) modulation; determining four sets from the plurality of demodulation symbols in accordance with the euclidean distances between the demodulation symbols, each set corresponding to a modulation direction for the qpsk modulation; performing euclidean distance weighted summation on the determined four sets respectively, and selecting a demodulation symbol with the minimum weighted summation value from each set as a rough estimation point for the qpsk modulation, so as to obtain four rough estimation points; re-determining four sets from the plurality of demodulation symbols in accordance with the euclidean distances between the demodulation symbols and the rough estimation points; performing euclidean distance weighted summation on the re-determined four sets respectively, and selecting a demodulation symbol with the minimum weighted summation value from each set as a precise estimation point; and performing direct current offset calculation and compensation in accordance with the precise estimation points.
|Broadband antenna and radio base station system for process-ing at least two frequency bands or radio standards in a radio communications system|
The present invention refers to a broadband antenna configured for processing at least two frequency bands or radio standards in a radio communications system, the broadband antenna including at least one column, the column including at least one antenna element, a first phase shifter configured for phase shifting a first frequency band or radio standard and a second phase shifter configured for phase shifting a second frequency band or radio standard, and a diplexer configured for diplexing the phase shifted first and second frequency bands or radio standards, including two inputs and one output, with the first phase shifter and the second phase shifter being coupled to the two inputs, and the antenna element being coupled to the output. The invention further refers to a radio base station system including a broadband antenna according to the invention..
|Anisotropic phase shifting mask|
The present disclosure provides a photomask. The photomask includes a substrate.
|Method and device for realizing specific absorption rate (sar) control|
The disclosure discloses a method and device for realizing specific absorption rate (sar) control, in both of which phase shifters can be provided on a metal ground edge of a wireless terminal, and an induced current of the metal ground edge can be altered by applying the phase shifters, so as to reduce an antenna near field radiation characteristic of an sar. The method and device of the disclosure can alter current phase and amplitude distribution of the metal ground without affecting the reception and transmission performance of the terminal, so as to reduce a local sar peak value and lessen the harm of radiation to human bodies.
|Liquid-crystalline media, components for high-frequency technology, and mesogenic compounds|
In which the parameters have the respective meanings given in the claims or in the text, and to the corresponding, novel mesogenic compounds and to the preparation thereof. The present invention likewise relates to the use of these liquid-crystal media, in particular in components for high-frequency technology, and to components of this type which contain media according to the invention, and to the production and use of these components.
|Method for signaling inforamtion by modifying modulation constellations|
Methods and systems for communicating in a wireless network may distinguish different types of packet structures by modifying the phase of a modulation constellation, such as a binary phase shift keying (bpsk) constellation, in a signal field. Receiving devices may identify the type of packet structure associated with a transmission or whether the signal field is present by the phase of the modulation constellation used for mapping for the signal field.
|Command protocol for adjustment of write timing delay|
Apparatuses are provided for adjusting the write timing. For instance, the apparatus can include an address/control bus, a write clock data recovery (wcdr) signal bus, and a timing adjustment module.
|Co-phasing of transmissions from multiple infrastructure nodes|
Briefly, in accordance with one or more embodiments, mobile station or user equipment receives pilot signals from two or more infrastructure nodes in a distributed antenna system, and calculates phase or timing information, or combinations thereof, from the pilot signals. The mobile station feeds back the phase or timing information, or combinations thereof, to the infrastructure nodes, and then receives one or more subsequent transmissions from the infrastructure nodes with phase shift or timing adjustments, or combinations thereof, calculated by the infrastructure nodes and applied to the spatial streams transmitted by the infrastructure nodes..
|Phase-shift blankmask and method for fabricating the same|
Furthermore, degradation in the refractive index and degree of phase shift of the phase-shift layer, caused when the cleaning process is repeatedly performed may be prevented due to the uppermost phase-shift layer having the enhanced chemical resistance and durability. Accordingly, a phase-shift blankmask including a thin phase-shift layer can be provided..
|Photomask blank and manufacturing method thereof|
An object of this invention is to provide a photomask blank in which there is little warpage and is which an amount of warpage change after a photomask manufacturing process ends is also small. First, a phase shift film is deposited (s101), next, the phase shift film is subjected to a heat treatment within a temperature range of 260° c.
|Signal source synchronization circuit|
A signal source synchronization circuit includes: a first tdc circuit that measures a first path delay time which is a time difference between an input time of a trigger signal to a first input terminal and an input time of the trigger signal to a second input terminal; and a second tdc circuit that measures a second path delay time which is a time difference between an input time of the trigger signal to a first input terminal and an input time of the trigger signal to a second input terminal, wherein a first phase shifter adjustment circuit sets a phase adjustment amount corresponding to the first path delay time in a first phase shifter, and a second phase shifter adjustment circuit sets a phase adjustment amount corresponding to the second path delay time in a second phase shifter.. .
|Maximizing the viterbi winning path metric to estimate carrier phase offset in continuous phase modulated signals|
A system and method for estimating carrier frequency offset Δf and carrier phase offset φ0 inherent in a received cpm signal. Samples of a continuous phase modulated (cpm) signal are received.
|High level iboc combining method and apparatus for single input antenna systems|
A phase shift is defined as a point in frequency at which the phase is changed from 0 degrees to 180 degrees. A device is provided for combining analog and digital in-band-on-channel (iboc) signals to feed a common antenna utilizing phase shifting allpass filter modules to provide a 180 degree phase shift to specific iboc channels within a constant impedance dual-hybrid circuit.
|Maximizing the viterbi winning path metric to estimate carrier frequency and phase offsets in continuous phase modulated signals|
A system and method for estimating carrier frequency offset Δf and carrier phase offset φ0 inherent in a received cpm signal. Samples of a continuous phase modulated (cpm) signal are received.
|Quantitative phase microscopy for label-free high-contrast cell imaging|
Systems and methods described herein employ multiple phase-contrast images with various relative phase shifts between light diffracted by a sample and light not diffracted by the sample to produce a quantitative phase image. The produced quantitative phase image may have sufficient contrast for label-free auto-segmentation of cell bodies and nuclei..
|Method for controlling polarization multiplexed optical signal|
An optical signal transmitter includes: first outer modulator to generate first modulated optical signal, the first outer modulator including a pair of optical paths and a first phase shifter to give phase difference to the pair of optical paths; second outer modulator to generate second modulated optical signal, the second outer modulator including a pair of optical paths and a second phase shifter to give phase difference to the pair of optical paths; combiner to generate polarization multiplexed optical signal by combining the first and second modulated optical signals; phase controller to control the phase difference by the first phase shifter to a−Δφ and control the phase difference by the second phase shifter to a+Δφ; and power controller to control at least one of the first and second outer modulators based on ac component of the polarization multiplexed optical signal.. .
|Dynamic polarization modulation and control|
A method for sending a data from an electromagnetic radiator by polarization modulation of an electromagnetic wave includes radiating from the radiator first and second electromagnetic waves including first and second polarizations respectively, the first polarization being different than the second polarization. The first and second electromagnetic waves form a third electromagnetic wave having a third polarization different from the first or second polarization.
|Method and apparatus for determining a precoding matrix for precoding symbols to be transmitted to a plurality of wireless devices|
In a method for determining a precoding matrix for precoding symbols to be transmitted to a plurality of wireless devices by a node of a wireless communication system the precoding matrix comprises a precoding vector for each wireless device of a plurality of wireless devices, each precoding vector having a precoding element for each transmit antenna of the node. Each precoding element represents a phase shifter for phase shifting a phase of a symbol to be transmitted.
|Differential phase shift keying system and method|
A variation on conventional dpsk binary modulation schemes is provided. One modulation scheme uses 3π/8 differential binary phase shift keying (3π/8-dbpsk) where one symbol is transmitted by phase change of 3π/8 radians and the other symbol is transmitted by phase change of −5π/8 radians.
|Spreading code producing apparatus|
This invention relates to spreading code producing apparatus, which comprises: two phase shifters for spreading code which receive bits for determining spreading codes and phase information and producing spreading codes; and multiplexers which receive two spreading codes produced said two phase shifters for spreading code, receive bits through separate way which defines outputting order of the received two spreading codes and produce spreading codes with same length as said received two spreading codes. Therefore, many information using few spreading codes can be transmitted so that data transmission rate can be raised.