| 摘要 |
<p>Disclosed is technology capable of removing common mode noise in the measurement of a bio signal using a capacitive coupling electrode. According to an embodiment of the present invention, a specific frequency band of the bio signal is compensated by connecting the specific frequency band of a common mode signal to the shielding of a capacitive coupling active electrode through a filter. Particularly, the common mode noise is reduced in a differential amplifier by feeding back the common mode signal passing through the filter to which a preset gain is applied to the bio signal.</p> |
