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Применить Всего найдено 18. Отображено 16.
25-08-2016 дата публикации

MITIGATING A PHASE ANOMALY IN AN ANALOGUE-TO-DIGITAL CONVERTER OUTPUT SIGNAL

Номер: US20160248461A1
Принадлежит: AIRBUS DEFENCE & SPACE LIMITED

A method and apparatus for mitigating a phase anomaly in an analogue-to-digital converter (ADC) output signal is disclosed. A plurality of codewords output by the ADC are received and information about an estimated level of interference between an output of the ADC and an input of the ADC due to the codeword is obtained for each codeword based on the logic values of bits in the codeword. In-phase (I) and quadrature (Q) corrections are obtained based on the information about the estimated level of interference, and applied to I and Q values obtained from the ADC output signal.

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18-04-2017 дата публикации

Mitigating a phase anomaly in an analogue-to-digital converter output signal

Номер: US0009628123B2

A method and apparatus for mitigating a phase anomaly in an analogue-to-digital converter (ADC) output signal is disclosed. A plurality of codewords output by the ADC are received and information about an estimated level of interference between an output of the ADC and an input of the ADC due to the codeword is obtained for each codeword based on the logic values of bits in the codeword. In-phase (I) and quadrature (Q) corrections are obtained based on the information about the estimated level of interference, and applied to I and Q values obtained from the ADC output signal.

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19-03-2015 дата публикации

MITIGATING A PHASE ANOMALY IN AN ANALOGUE-TO-DIGITAL CONVERTER OUTPUT SIGNAL

Номер: US20150078496A1
Принадлежит: AIRBUS DEFENCE & SPACE LIMITED

A method and apparatus for mitigating a phase anomaly in an analogue-to-digital converter (ADC) output signal is disclosed. A plurality of codewords output by the ADC are received and information about an estimated level of interference between an output of the ADC and an input of the ADC due to the codeword is obtained for each codeword based on the logic values of bits in the codeword. In-phase (I) and quadrature (Q) corrections are obtained based on the information about the estimated level of interference, and applied to I and Q values obtained from the ADC output signal.

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12-09-2017 дата публикации

Phase angle measurement using residue number system analogue-to-digital conversion

Номер: US0009759754B2

A phase angle can be measured between an analog signal and a reference signal by converting the analog signal to digital samples in a residue number system (RNS) analog-to-digital converter (ADC), based on a RNS scheme. The phase angle can be measured directly from the RNS values output by the RNS ADC, or the RNS values can be converted to a binary scheme, such as straight binary, offset binary or two's complement, before calculating the phase angle measurement.

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25-07-2013 дата публикации

PSEUDO-NOISE GENERATOR

Номер: US20130191427A1
Автор: Lewis Farrugia
Принадлежит: ASTRIUM LIMITED

The present invention relates to a pseudo-noise generator comprising a plurality of pseudo-random number generators and an averaging unit. The averaging unit is arranged to receive a plurality of pseudo-random numbers from the plurality of pseudo-random number generators, calculate a mean value of the plurality of pseudo-random numbers, and output said mean value as a digital pseudo-noise signal.

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06-10-2016 дата публикации

PHASE ANGLE MEASUREMENT USING RESIDUE NUMBER SYSTEM ANALOGUE-TO-DIGITAL CONVERSION

Номер: US20160291069A1
Автор: Farrugia Lewis
Принадлежит:

A phase angle can be measured between an analogue signal and a reference signal by converting the analogue signal to digital samples in a residue number system (RNS) analogue-to-digital converter (ADC), based on a RNS scheme. The phase angle can be measured directly from the RNS values output by the RNS ADC, or the RNS values can be converted to a binary scheme, such as straight binary, offset binary or two's complement, before calculating the phase angle measurement. 1. Apparatus for measuring a phase angle from an analogue signal , the apparatus comprising:a residue number system RNS analogue-to-digital converter ADC arranged to output a plurality of digital samples from the first analogue signal according to a RNS scheme; anda phase measurement module arranged to measure a phase angle between the analogue signal and a reference signal, based on the reference signal and the digital samples output by the RNS ADC.2. The apparatus of claim 1 , further comprising:a RNS-to-binary converter connected between the RNS ADC and the phase measurement module, the RNS-to-binary converter being arranged to convert the RNS digital samples to binary values according to a binary coding scheme,wherein the phase measurement module is arranged to measure the phase angle based on the reference signal and the converted digital samples from the RNS-to-binary converter.3. The apparatus of claim 1 , wherein the phase measurement module comprises:a quadrature reference signal generator arranged to generate sine and cosine waveforms according to a frequency of the reference signal;a first multiplier arranged to multiply the digital samples by the cosine waveform to obtain an in-phase I signal component;a second multiplier arranged to multiply the digital samples by the sine waveform to obtain a quadrature Q signal component;a first integrator arranged to integrate the I signal component over time;a second integrator arranged to integrate the Q signal component over time; anda phase angle ...

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19-09-2018 дата публикации

Phase angle measurement using residue number system analogue-to-digital conversion

Номер: EP2853905B1
Автор: Lewis Farrugia
Принадлежит: Airbus Defence and Space Ltd

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02-04-2015 дата публикации

Phase angle measurement using residue number system analogue- to-digital conversion

Номер: WO2015044675A1
Автор: Lewis Farrugia
Принадлежит: AIRBUS DEFENCE AND SPACE LIMITED

A phase angle can be measured between an analogue signal and a reference signal by converting the analogue signal to digital samples in a residue number system (RNS) analogue-to-digital converter (ADC), based on a RNS scheme. The phase angle can be measured directly from the RNS values output by the RNS ADC, or the RNS values can be converted to a binary scheme, such as straight binary, offset binary or two's complement, before calculating the phase angle measurement.

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02-04-2015 дата публикации

Phase angle measurement using residue number system analogue-to-digital conversion

Номер: CA2924980A1
Автор: Lewis Farrugia
Принадлежит: Airbus Defence and Space Ltd

A phase angle can be measured between an analogue signal and a reference signal by converting the analogue signal to digital samples in a residue number system (RNS) analogue-to-digital converter (ADC), based on a RNS scheme. The phase angle can be measured directly from the RNS values output by the RNS ADC, or the RNS values can be converted to a binary scheme, such as straight binary, offset binary or two's complement, before calculating the phase angle measurement.

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29-09-2011 дата публикации

Pseudo-noise generator

Номер: WO2011117197A2
Автор: Lewis Farrugia
Принадлежит: ASTRIUM LIMITED

The present invention relates to a pseudo-noise generator comprising a plurality of pseudo-random number generators and an averaging unit. The averaging unit is arranged to receive a plurality of pseudo-random numbers from the plurality of pseudo-random number generators, calculate a mean value of the plurality of pseudo-random numbers, and output said mean value as a digital pseudo-noise signal.

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30-01-2013 дата публикации

Pseudo-noise generator

Номер: EP2550594A2
Автор: Lewis Farrugia
Принадлежит: Astrium Ltd

The present invention relates to a pseudo-noise generator comprising a plurality of pseudo-random number generators and an averaging unit. The averaging unit is arranged to receive a plurality of pseudo-random numbers from the plurality of pseudo-random number generators, calculate a mean value of the plurality of pseudo-random numbers, and output said mean value as a digital pseudo-noise signal.

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14-03-2017 дата публикации

Atenuación de una anomalía de fase en una señal de salida de convertidor analógico-digital

Номер: ES2605491T3
Принадлежит: Airbus Defence and Space Ltd

Un procedimiento de atenuación de una anomalía de fase en una señal de salida de convertidor analógico-digital ADC, comprendiendo el procedimiento: recibir una pluralidad de palabras de código producidas por el ADC; obtener, para cada una de la pluralidad de palabras de código, información acerca de un nivel estimado de interferencia entre una salida del ADC y una entrada del ADC debida a la palabra de código basándose en los valores lógicos de bits en la palabra de código; obtener correcciones en fase I y en cuadratura Q del nivel estimado de interferencia basándose en la información obtenida; y aplicar las correcciones I y Q a valores I y Q obtenidos a partir de la señal de salida de ADC.

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04-02-2015 дата публикации

Mitigating a phase anomaly in an analogue-to-digital converter output signal

Номер: EP2831998A1
Принадлежит: Astrium Ltd

A method and apparatus for mitigating a phase anomaly in an analogue-to-digital converter (ADC) output signal is disclosed. A plurality of codewords output by the ADC are received and information about an estimated level of interference between an output of the ADC and an input of the ADC due to the codeword is obtained for each codeword based on the logic values of bits in the codeword. In-phase (I) and quadrature (Q) corrections are obtained based on the information about the estimated level of interference, and applied to I and Q values obtained from the ADC output signal. The information about the estimated level of interference can be obtained based on the Hamming weight of the codeword, a weighted digit sum of the codeword, and the numbers of 0 to 1 and 1 to 0 transitions between the current codeword and the preceding codeword. In an embodiment, the information about the estimated level of interference can be a sequence of values defining an estimated interfering signal, and scaling and rotating the estimated interfering signal according to predetermined amplitude scaling and phase rotation parameters.

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22-03-2017 дата публикации

Mitigating a phase anomaly in an analogue-to-digital converter output signal

Номер: EP2831998B8
Принадлежит: Airbus Defence and Space Ltd

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14-07-2020 дата публикации

Mitigating a phase anomaly in an analogue-to-digital converter output signal

Номер: CA2869055C
Принадлежит: Airbus Defence and Space Ltd

A method and apparatus for mitigating a phase anomaly in an analogue-to-digital converter (ADC) output signal is disclosed. A plurality of codewords output by the ADC are received and information about an estimated level of interference between an output of the ADC and an input of the ADC due to the codeword is obtained for each codeword based on the logic values of bits in the codeword. In-phase (I) and quadrature (Q) corrections are obtained based on the information about the estimated level of interference, and applied to I and Q values obtained from the ADC output signal. The information about the estimated level of interference can be obtained based on the Hamming weight of the codeword, a weighted digit sum of the codeword, and the numbers of 0 to 1 and 1 to 0 transitions between the current codeword and the preceding codeword. In an embodiment, the information about the estimated level of interference can be a sequence of values defining an estimated interfering signal, and scaling and rotating the estimated interfering signal according to predetermined amplitude scaling and phase rotation parameters.

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03-10-2013 дата публикации

Mitigating a phase anomaly in an analogue-to-digital converter output signal

Номер: WO2013144142A1
Принадлежит: ASTRIUM LIMITED

A method and apparatus for mitigating a phase anomaly in an analogue-to-digital converter (ADC) output signal is disclosed. A plurality of codewords output by the ADC are received and information about an estimated level of interference between an output of the ADC and an input of the ADC due to the codeword is obtained for each codeword based on the logic values of bits in the codeword. In-phase (I) and quadrature (Q) corrections are obtained based on the information about the estimated level of interference, and applied to I and Q values obtained from the ADC output signal. The information about the estimated level of interference can be obtained based on the Hamming weight of the codeword, a weighted digit sum of the codeword, and the numbers of 0 to 1 and 1 to 0 transitions between the current codeword and the preceding codeword. In an embodiment, the information about the estimated level of interference can be a sequence of values defining an estimated interfering signal, and scaling and rotating the estimated interfering signal according to predetermined amplitude scaling and phase rotation parameters.

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