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

IPC: H04L27/38 ,  H04L27/36 ,  H03D3/00 ,  H03H7/54

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.

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

IPC: H03H7/54 ,  H04L27/38 ,  H03D3/00 ,  H04L27/36

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.

公开(公告)号：US09019009B2

公开(公告)日：2015-04-28

申请号：US13860714

申请日：2013-04-11

Applicant: NXP B.V.

Inventor： Frits Anthonie Steenhof ,  Mattheus Johan Koerts ,  Skule Pramm

IPC: H03F3/38 ,  H03F3/217 ,  H03F1/26

CPC classification number: H03F3/2171 ,  H03F1/26 ,  H03F3/217

Abstract: A method of adjusting the frequency or phase of operation of a Class-D amplifier is disclosed. The method comprises making a series of step changes in the frequency or phase to adjust the frequency or phase from a start value to a desired end value, each step change in frequency or phase causing a corresponding disturbance of an output of the Class-D amplifier to produce a series of disturbances, each of which varies from an initial magnitude in first and second senses to exhibit a first peak and then in the first sense to exhibit a second peak. The time between the step changes is selected so that the second peak of each disturbance other than a final disturbance in the series overlaps the first peak of an immediately succeeding disturbance.

Abstract translation: 公开了一种调节D类放大器的工作频率或相位的方法。 该方法包括在频率或相位上进行一系列阶跃变化以将频率或相位从起始值调整到期望的终点值，频率或相位的每个阶跃变化导致D类放大器的输出的相应干扰 以产生一系列扰动，其中的每一个都从第一和第二感测中的初始幅度变化，以表现出第一峰值，然后在第一意义上表现出第二峰值。 选择阶梯变化之间的时间，使得除了串联中的最终扰动之外的每个扰动的第二峰值与紧随其后的干扰的第一峰值重叠。