公开(公告)号：WO2020056754A1

公开(公告)日：2020-03-26

申请号：PCT/CN2018/107082

申请日：2018-09-21

Applicant: ANALOG DEVICES GLOBAL UNLIMITED COMPANY ,  WANG, Long

Inventor： WANG, Long ,  HOLLAND, William ,  DANESH, Seyed Amir Ali

IPC: H04B1/10

Abstract: An apparatus is provided which substantially removes a perturbation signal from a pulse density modulated signal representing a combination of a signal to be measured and a perturbation applied to the signal to be measured. The removal of the perturbation is done by subtracting a correcting signal from the pulse density modulated signal. This approach introduces very little delay as it can be implemented by simple logic gates. It also provided enhanced immunity from the effects of bit errors.

公开(公告)号：WO2019048537A1

公开(公告)日：2019-03-14

申请号：PCT/EP2018/073984

申请日：2018-09-06

Applicant: ANALOG DEVICES GLOBAL UNLIMITED COMPANY

Inventor： HURWITZ, Jonathan ,  HOLLAND, William ,  DANESH, Seyed

IPC: G01R35/04 ,  G01R21/133 ,  G01R35/02 ,  G01R19/25 ,  G01R15/20 ,  G01R19/00 ,  G01R21/14 ,  G01R19/32

CPC classification number: G01R15/202 ,  G01R1/203 ,  G01R15/146 ,  G01R15/207 ,  G01R19/0092 ,  G01R19/2509 ,  G01R19/32 ,  G01R21/08 ,  G01R21/133 ,  G01R21/14 ,  G01R33/3607 ,  G01R35/02 ,  G01R35/04

Abstract: A measurement circuit is arranged to make several measurements, either at different times or in respect of different frequency components of currents measured by current sensors in respective phases of a multiphase supply system. The measurments are then used to correct for discrepencies in the transfer function of the sensors.