Title:
CONFIGURABLE ACTIVE ELECTRODE HAVING OFFSET VOLTAGE SUPPRESSION
Document Type and Number:
WIPO Patent Application WO/2022/252025
Kind Code:
A1
Abstract:
A configurable active electrode having offset voltage suppression. The configurable active electrode comprises an external signal input end, a common mode voltage input end, a circuit output end, a direct-current offset voltage suppression circuit, an adjustable closed-loop gain circuit and a differential difference amplifier, wherein a first positive input end of the differential difference amplifier is connected to the external signal input end, a first negative input end of the differential difference amplifier is connected to the external signal input end by means of the direct-current offset voltage suppression circuit, a second negative input end and a second positive input end of the differential difference amplifier are connected to the common mode voltage input end by means of the adjustable closed-loop gain circuit, and an output end of the differential difference amplifier is connected to the circuit output end. By means of the configurable active electrode, the transmission signal-to-noise ratio of a weak signal can be increased; the polarization of an offset voltage can be suppressed by means of the electrode; the anti-interference capability of the electrode and a lead wire during the transmission of a weak bioelectrical signal can be enhanced; and a single operational amplifier structure is used without using a large capacitor, such that monolithic integration can be realized.
Inventors:
ZHANG JINYONG (CN)
LIAO JIANCAN (CN)
YE QINGSONG (CN)
LIAO JIANCAN (CN)
YE QINGSONG (CN)
Application Number:
PCT/CN2021/097311
Publication Date:
December 08, 2022
Filing Date:
May 31, 2021
Export Citation:
Assignee:
UNIV SHENZHEN TECHNOLOGY (CN)
International Classes:
H03F3/45
Foreign References:
| CN111585531A | 2020-08-25 | |||
| CN203775151U | 2014-08-13 | |||
| CN108768325A | 2018-11-06 | |||
| CN102130659A | 2011-07-20 | |||
| EP3096452A1 | 2016-11-23 |
Attorney, Agent or Firm:
SHENZHEN REFINED INTELLECTUAL PROPERTY OFFICE (GENERAL PARTNERSHIP) (CN)
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