CIRCUIT FOR COMMON-MODE INTERFERENCE SUPPRESSION IN FIELD DEVICE Russian patent published in 2015 - IPC G05B19/02 H04B3/28 

FIELD: radio engineering, communication.

SUBSTANCE: group of inventions relates to analogue signal processing. Disclosed is a system which operates in a process control environment, which comprises a field device for performing a process control function in a process control environment, a remote device located at a distance from the field device for performing an auxiliary function relating to the process control function of the field device, a first wire link communicatively connected to the field device and the remote device for maintaining a connection between the field device and the remote device, and a common-mode interference suppression circuit connected to the field device and the wire link for mitigating common-mode interference generated in the first wire link.

EFFECT: providing reliable data transmission in the presence of common-mode interference.

24 cl, 5 dwg