Connect public, paid and private patent data with Google Patents Public Datasets

Signal acquisition using a multi-frequency chopping in a single circuitry

Info

Publication number
WO2015114667A3
WO2015114667A3 PCT/IN2015/000058 IN2015000058W WO2015114667A3 WO 2015114667 A3 WO2015114667 A3 WO 2015114667A3 IN 2015000058 W IN2015000058 W IN 2015000058W WO 2015114667 A3 WO2015114667 A3 WO 2015114667A3
Authority
WO
Grant status
Application
Patent type
Prior art keywords
chopping
signals
frequency
level
system
Prior art date
Application number
PCT/IN2015/000058
Other languages
French (fr)
Other versions
WO2015114667A2 (en )
Inventor
G. Sujan KUMAR
S Aniruddhan
Original Assignee
Indian Institute Of Technology Madras
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/04Detecting, measuring or recording bioelectric signals of the body or parts thereof
    • A61B5/04004Input circuits for EEG-, or EMG-signals
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/72Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7225Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/211Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/38Dc amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers
    • H03F3/387Dc amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers with semiconductor devices only

Abstract

The present invention discloses a method and system for processing a plurality of signals together in a single circuitry using a multi-frequency chopping. The system is configured to include a first level chopping, an amplifier for amplification, a second level chopping, a filter for filtration and an Analog to Digital Converter (ADC). The system is further configured to receive low frequency input signals and apply the first level of chopping by translating signals to a higher frequency. Further, the system is configured to amplify the signals and apply the second level of chopping to translate the signal back to original frequency. During second level of chopping, signals are translated to new frequencies other than their baseband by chopping each signal at a different frequency. Further, the signals are combined into a single signal and send to an Analog-to-Digital Converter (ADC) for digitizing.
PCT/IN2015/000058 2014-01-29 2015-01-29 Signal acquisition using a multi-frequency chopping in a single circuitry WO2015114667A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IN400CH2014 2014-01-29
IN400/CHE/2014 2014-01-29

Publications (2)

Publication Number Publication Date
WO2015114667A2 true WO2015114667A2 (en) 2015-08-06
WO2015114667A3 true true WO2015114667A3 (en) 2015-11-05

Family

ID=53757867

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2015/000058 WO2015114667A3 (en) 2014-01-29 2015-01-29 Signal acquisition using a multi-frequency chopping in a single circuitry

Country Status (1)

Country Link
WO (1) WO2015114667A3 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7170338B1 (en) * 2005-03-24 2007-01-30 Cirrus Logic, Inc. Chopper stabilization circuits and methods
US8471744B1 (en) * 2011-12-01 2013-06-25 Hong Kong Applied Science & Technology Research Institute Company, Ltd. Reduced residual offset sigma delta analog-to-digital converter (ADC) with chopper timing at end of integrating phase before trailing edge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7170338B1 (en) * 2005-03-24 2007-01-30 Cirrus Logic, Inc. Chopper stabilization circuits and methods
US8471744B1 (en) * 2011-12-01 2013-06-25 Hong Kong Applied Science & Technology Research Institute Company, Ltd. Reduced residual offset sigma delta analog-to-digital converter (ADC) with chopper timing at end of integrating phase before trailing edge

Also Published As

Publication number Publication date Type
WO2015114667A2 (en) 2015-08-06 application

Similar Documents

Publication Publication Date Title
US20130058439A1 (en) Receiver
WO2008041321A1 (en) Signal processing device and broadcast device using the same
USD752153S1 (en) Poker game playing surface and environment
Yin et al. In vivo testing of a low noise 32-channel wireless neural recording system
US9083369B2 (en) Split-path data acquisition signal chain
CN204156819U (en) Multistage low-noise amplifier
EP2845321B1 (en) Radio communication receiver apparatus and method
WO2010149053A1 (en) Method and device for clipping control
JP6098508B2 (en) Power circuit
CN205071158U (en) Processing circuit of CCD camera for space remote sensing
CN206363189U (en) Frequency assignment amplification device with low phase noise , high isolation
US20150349818A1 (en) Parallel connection method and device for multi-channel PD signals
CN203706357U (en) Device for eliminating contact injury in ship chamber
CN202586943U (en) Novel shortwave broadband multichannel digital receiver
CN205510021U (en) Zero intermediate frequency receiver's rear end baseband signal adjusts treatment circuit
CN204231369U (en) Frequency spectrum monitoring device effectively avoiding radio interferences
EP2536027B1 (en) Method and device for equalizing a plurality of radio-television channels
CN104242938B (en) A voltage-type analog to digital conversion means
RU159902U1 (en) Amplifier with interference cancellation
US20170160388A1 (en) Ultrasound receiver circuitry and related apparatus and methods
US20140301413A1 (en) Method and system for an analog crossbar architecture
谭爱平 et al. Comparison of color words-Blue and Red in Intercultural communication
US20170163229A1 (en) Power amplification module
Hwang et al. New polyketides from a fungicolous isolate of Pestalotiopsis disseminata
Ikeya Kelp (Konbu) and Abalone Collecting in Small Fishing Communities of Sanriku after the Great East Japan Earthquake

Legal Events

Date Code Title Description
122 Ep: pct application non-entry in european phase

Ref document number: 15743920

Country of ref document: EP

Kind code of ref document: A2