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公开(公告)号：US10708114B2
公开(公告)日：2020-07-07
申请号：US16122132
申请日：2018-09-05
Applicant: NXP B.V.
Inventor： Juergen Richard Marschner , Robert Rutten , Niels Gabriel , Tjeu van Ansem , Francoise Jeannette Harmsze , Peter Blinzer , Frits Anthonie Steenhof
Abstract: Certain aspects of the disclosure are directed to in-phase/quadrature (IQ) mismatch detection and correction in radio frequency receivers. According to a specific example, a method of manufacture or use comprises, in a quadrature radio-frequency receiver configured to process signals using I and Q components, providing parameters indicative of IQ mismatches associated with circuitry of the quadrature radio-frequency receiver due to changes in signal gain. The method further includes, while using the quadrature radio-frequency receiver to receive and process a received radio signal, correcting for the IQ mismatches by using the parameters in response to actual signal gain change.
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公开(公告)号：US10447523B2
公开(公告)日：2019-10-15
申请号：US15619259
申请日：2017-06-09
Applicant: NXP B.V.
Inventor： Joerg Heinrich Walter Wenzel , Robert Rutten , Evert-Jan Pol , Jan van Sinderen , Tjeu van Ansem , Peter van de Haar
Abstract: The disclosure relates to an IQ mismatch correction module for a radio receiver, the IQ mismatch correction module comprising: an input terminal configured to receive an input signal; an output terminal configured to provide a filtered output signal; a mismatch detection module comprising: one or more bandpass filters configured to receive, from the input terminal or output terminal, a bandpass input signal and to pass a plurality of sub-bands of the bandpass input signal to provide respective bandpass filtered signals; one or more amplitude and phase mismatch detectors configured to determine amplitude and phase mismatch coefficients based on the bandpass filtered signals from the plurality of sub-bands; a transformation unit configured to apply a transformation to the amplitude and phase mismatch coefficients to provide correction filter coefficients for the plurality of sub-bands; and a filter module configured to: receive the filter coefficients for the plurality of sub-bands from the mismatch detection module; and filter the input signal in accordance with the received filter coefficients to provide the filtered output signal.
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公开(公告)号：US20200076671A1
公开(公告)日：2020-03-05
申请号：US16122132
申请日：2018-09-05
Applicant: NXP B.V.
Inventor： Juergen Richard Marschner , Robert Rutten , Niels Gabriel , Tjeu van Ansem , Francoise Jeannette Harmsze , Peter Blinzer , Frits Anthonie Steenhof
Abstract: Certain aspects of the disclosure are directed to in-phase/quadrature (IQ) mismatch detection and correction in radio frequency receivers. According to a specific example, a method of manufacture or use comprises, in a quadrature radio-frequency receiver configured to process signals using I and Q components, providing parameters indicative of IQ mismatches associated with circuitry of the quadrature radio-frequency receiver due to changes in signal gain. The method further includes, while using the quadrature radio-frequency receiver to receive and process a received radio signal, correcting for the IQ mismatches by using the parameters in response to actual signal gain change.
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公开(公告)号：US20180013604A1
公开(公告)日：2018-01-11
申请号：US15619259
申请日：2017-06-09
Applicant: NXP B.V.
Inventor： Joerg Heinrich Walter Wenzel , Robert Rutten , Evert-Jan Pol , Jan van Sinderen , Tjeu van Ansem , Peter van de Haar
CPC classification number: H04L27/364 , H04L1/20 , H04L27/3863
Abstract: The disclosure relates to an IQ mismatch correction module for a radio receiver, the IQ mismatch correction module comprising: an input terminal configured to receive an input signal; an output terminal configured to provide a filtered output signal; a mismatch detection module comprising: one or more bandpass filters configured to receive, from the input terminal or output terminal, a bandpass input signal and to pass a plurality of sub-bands of the bandpass input signal to provide respective bandpass filtered signals; one or more amplitude and phase mismatch detectors configured to determine amplitude and phase mismatch coefficients based on the bandpass filtered signals from the plurality of sub-bands; a transformation unit configured to apply a transformation to the amplitude and phase mismatch coefficients to provide correction filter coefficients for the plurality of sub-bands; and a filter module configured to: receive the filter coefficients for the plurality of sub-bands from the mismatch detection module; and filter the input signal in accordance with the received filter coefficients to provide the filtered output signal.
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