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

IPC: H04L27/36 ,  H04L1/20 ,  H04L27/38

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.

公开(公告)号：US09509290B2

公开(公告)日：2016-11-29

申请号：US14702884

申请日：2015-05-04

Applicant: NXP B.V.

Inventor： Jan van Sinderen ,  Salvatore Drago

IPC: H03K3/03 ,  H03D7/12 ,  H03K5/00 ,  H03D7/16

CPC classification number: H03K3/0315 ,  H03D7/125 ,  H03D7/165 ,  H03D2200/0066 ,  H03D2200/0074 ,  H03K5/00006

Abstract: A frequency converter, comprising a multi-phase local oscillator and a multi-phase mixer. The mixer comprises a plurality of mixer switches, each connected to a respective amplifier. The local oscillator is configured to provide a switching signal to each mixer switch, and comprises a plurality of inverters configured as a ring oscillator.

Abstract translation: 一种变频器，包括多相本地振荡器和多相混频器。 混频器包括多个混频器开关，每个混频器开关连接到相应的放大器。 本地振荡器被配置为向每个混频器开关提供开关信号，并且包括被配置为环形振荡器的多个反相器。

公开(公告)号：US20140340151A1

公开(公告)日：2014-11-20

申请号：US14278227

申请日：2014-05-15

Applicant: NXP B.V.

Inventor： Jan van Sinderen ,  Johannes Brekelmans

IPC: H03F3/45 ,  H03F3/21 ,  H03F3/193

CPC classification number: H03F3/193 ,  H03F1/342 ,  H03F3/45475 ,  H03F2200/294 ,  H03F2200/453 ,  H03F2200/456 ,  H03F2203/45288

Abstract: A transconductance amplifier comprises a set of amplifier stages. The last stage of the amplifier is split with a certain ratio whereby one part is used to deliver output current and other part to deliver feedback current to the input.

Abstract translation: 跨导放大器包括一组放大器级。 放大器的最后阶段以一定的比例分频，其中一个部分用于传递输出电流和其他部分，以将反馈电流传递给输入。