公开(公告)号：US11228478B1

公开(公告)日：2022-01-18

申请号：US17069669

申请日：2020-10-13

Applicant: NXP B.V.

Inventor： Marios Neofytou ,  Konstantinos Doris ,  Marcello Ganzerli ,  Georgi Ivanov Radulov ,  Pavlos Athanasiadis

IPC: H04L5/04 ,  H04L27/36 ,  H04L27/12 ,  H04L5/02 ,  H04L27/26 ,  H04L27/00

Abstract: A wireless transceiver system includes a transmitter and a receiver. The transmitter includes a digital processor and a self-correction modulator coupled to the digital processor, wherein based upon a calibration correction assessment of an in-phase (I) signal and a quadrature (Q) signal received from the digital processor, the self-correction modulator generates a calibrated modulated signal. The self-correction modulator includes a core modulator and a calibration correction unit. The calibration correction unit is configured to correct an output of the core modulator based upon the calibration correction assessment. The calibration correction unit includes a calibration processing unit and a calibration modulator, wherein the calibration processing unit provides correction quantities that are used to program the calibration modulator to provide the self-corrected modulated signal.

公开(公告)号：US11977181B2

公开(公告)日：2024-05-07

申请号：US17069675

申请日：2020-10-13

Applicant: NXP B.V.

Inventor： Pavlos Athanasiadis ,  Konstantinos Doris ,  Marios Neofytou ,  Georgi Ivanov Radulov

IPC: H03M1/10 ,  G01S7/40 ,  G06F7/24 ,  H03M1/12 ,  G01S7/02

CPC classification number: G01S7/4021 ,  G06F7/24 ,  H03M1/1215 ,  H03M1/1245 ,  G01S7/027

Abstract: An apparatus, such as a radar system that conducts beamforming operations, includes a plurality of analog-to-digital-converters (ADCs) and an error correction system coupled to the ADCs. Based upon an assessment of a plurality of errors associated with the ADCs by the error correction system, the error correction system programs sampling operations for the ADCs. The error correction system includes an error correction unit that identifies the plurality of errors associated with a plurality of sub-ADCs of the ADCs, a selection unit coupled to the error correction unit that sorts the errors associated with the plurality of sub-ADCs, and a programming unit coupled to the selection unit that reconfigures the sorted errors to generate a sequence of sampling operations for the plurality of sub-ADCs. Using, for example, a barrel shifter function, the sorted errors are reconfigured by the programming unit such that a summation of elements in each column in a matrix in which the sorted errors are stored are within a predefined value.

公开(公告)号：US20220113373A1

公开(公告)日：2022-04-14

申请号：US17069675

申请日：2020-10-13

Applicant: NXP B.V.

Inventor： Pavlos Athanasiadis ,  Konstantinos Doris ,  Marios Neofytou ,  Georgi Ivanov Radulov

IPC: G01S7/40 ,  H03M1/12 ,  G06F7/24

Abstract: An apparatus, such as a radar system that conducts beamforming operations, includes a plurality of analog-to-digital-converters (ADCs) and an error correction system coupled to the ADCs. Based upon an assessment of a plurality of errors associated with the ADCs by the error correction system, the error correction system programs sampling operations for the ADCs. The error correction system includes an error correction unit that identifies the plurality of errors associated with a plurality of sub-ADCs of the ADCs, a selection unit coupled to the error correction unit that sorts the errors associated with the plurality of sub-ADCs, and a programming unit coupled to the selection unit that reconfigures the sorted errors to generate a sequence of sampling operations for the plurality of sub-ADCs. Using, for example, a barrel shifter function, the sorted errors are reconfigured by the programming unit such that a summation of elements in each column in a matrix in which the sorted errors are stored are within a predefined value.