Patent ID: 11857328
Assignee: T&W ENGINEERING A/S
Field: Basic communication processes (Electrical engineering)
Classification: CPC A  H | IPC A  H

Claim 4:
5. A method for sensing an electric potential difference in a sensor system having at least one set of electrodes including a reference electrode providing an electric potential reference and an active electrode component according to claim 1, the method comprising:
generating an input signal by means of said active electrode component sensing the bio potential;
amplifying the input signal received from said electrode in said integrated amplifier;
connecting said shield to said output of the integrated amplifier to actively drive the electrical potential of said shield, thereby providing an active shielding of said sensing electrode;
frequency shifting the input signal from the basic frequency range to the higher frequency range by means of said first mixer placed in front of the integrated amplifier;
and frequency shifting the amplified signal from said higher frequency range back to said basic frequency range by means of said second mixer placed on the output of the integrated amplifier.