公开(公告)号：US20230047734A1

公开(公告)日：2023-02-16

申请号：US17781521

申请日：2020-10-29

Applicant: ZTE CORPORATION

Inventor： Yi WANG ,  Hongxing ZHOU ,  Zhe ZHANG ,  Zuofeng ZHANG ,  Dongfang NING

IPC: H03M1/10

Abstract: Provided are a Time-Interleaved Successive Approximation Register Analog-to-Digital Converter, TISAR ADC, and a calibration method thereof. The calibration method for the TISAR ADC may include: sampling an analog signal input into the TISAR ADC to generate a reference digital signal (S130); according to the reference digital signal and output digital signals generated by analog-to-digital conversion sub-modules of the TISAR ADC, obtaining capacitor array calibration parameters and time delay calibration parameters of the analog-to-digital conversion sub-modules; adjusting capacitor arrays of the corresponding analog-to-digital conversion sub-modules according to the capacitor array calibration parameters, respectively; and adjusting time delays of the corresponding analog-to-digital conversion sub-modules according to the time delay calibration parameters, respectively.

公开(公告)号：US20170117927A1

公开(公告)日：2017-04-27

申请号：US15318632

申请日：2014-11-05

Applicant: ZTE CORPORATION

Inventor： Lei WANG ,  Zhengjian DAI ,  Weiming PAN ,  Zhe ZHANG ,  Mei HUANG

IPC: H04B1/04 ,  H04L25/03

CPC classification number: H04B1/0475 ,  H03F3/24 ,  H04B2001/0408 ,  H04B2001/0433 ,  H04B2001/0491 ,  H04L25/03057

Abstract: The present document discloses an apparatus and method for nonlinear system distortion correction. The apparatus includes: apparatus for nonlinear system distortion correction including: a robustness signal source generator, arranged to generate a robustness signal provided to an adaptive device; the adaptive device, arranged to collect a main link signal output by a signal generator and a feedback signal returned by the main link signal via a feedback link, and generate a correction parameter according to the main link signal, the feedback signal and the robustness signal; and a pre-corrector, arranged to according to the correction parameter perform pre-correction processing on the main link signal output by the signal generator.