公开(公告)号：US20240159888A1

公开(公告)日：2024-05-16

申请号：US18498138

申请日：2023-10-31

Applicant: NXP B.V.

Inventor： Robert Rutten ,  Andries Pieter Hekstra ,  Salvatore Drago ,  Tarik Saric

IPC: G01S13/58 ,  G01S7/35

CPC classification number: G01S13/584 ,  G01S7/354 ,  G01S7/356 ,  G01S13/931

Abstract: A radar sensor comprising a chirp generator that is configured to provide radar signalling for transmission. The radar signalling comprises a sequence of radar chirps, and wherein each radar chirp has a chirp slope that defines the rate of change of frequency in the radar chirp. A mixer multiplies the transmitted radar signalling with a received, reflected version of the transmitted radar signalling in order to provide analogue intermediate frequency, IF, signalling. An ADC samples the IF signalling in order to generate digital signalling. A digital processor populates a 2-dimensional array of bin-values based on the digital-values, such that: a first axis of the 2-dimensional array is a fast time axis and a second axis of the 2-dimensional array is a slow time axis. A chirp slope frequency adjuster sets the chirp slope of the radar chirps based on an index in the sequence of radar chirps. The digital processor performs DFT calculations on the bin-values in the 2-dimensional array along the fast time axis and the slow time axis in order to determine the range and velocity of any detected objects.

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：US20150180496A1

公开(公告)日：2015-06-25

申请号：US14551904

申请日：2014-11-24

Applicant: NXP B.V.

Inventor： Salvatore Drago

IPC: H03M1/08 ,  H03M1/12 ,  H03M1/18 ,  H03M1/00

CPC classification number: H03M1/38 ,  H03M1/46 ,  H03M1/462 ,  H03M1/804 ,  H04L27/3818

Abstract: A phase estimator comprising a first input terminal configured to receive a first analogue input signal; a second input terminal configured to receive a second analogue input signal, wherein the second analogue input signal is 90° out of phase with the first analogue input signal. The phase estimator is configured to provide a digital word representative of the phase of the first analogue input signal and the second analogue input signal. The phase estimator comprises a register configured to store N bits as a digital word a first reference signal generator, a second reference signal generator and a comparator.

Abstract translation: 相位估计器，包括被配置为接收第一模拟输入信号的第一输入端; 第二输入端，被配置为接收第二模拟输入信号，其中所述第二模拟输入信号与所述第一模拟输入信号相差90°。 相位估计器被配置为提供表示第一模拟输入信号和第二模拟输入信号的相位的数字字。 相位估计器包括被配置为将N位作为数字字存储的第一参考信号发生器，第二参考信号发生器和比较器的寄存器。