Nothing Special   »   [go: up one dir, main page]

Li et al., 2020 - Google Patents

Ultralow noise low offset chopper amplifier for induction coil sensor to detect geomagnetic field of 1 mHz to 1 kHz

Li et al., 2020

Document ID
13146029288791393005
Author
Li J
Xi Z
Chen X
Wang H
Long X
Zhou S
Wang L
Publication year
Publication venue
Journal of Environmental and Engineering Geophysics

External Links

Snippet

An induction coil sensor (ICS) is important for measuring low-frequency (DC-1kHz) geomagnetic field. The accuracy of the preamplifier is one key factor determining the performance of the sensor. But the preamplifier is susceptible to 1/f noise, offset voltage and …
Continue reading at pubs.geoscienceworld.org (other versions)

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices, e.g. Hall effect devices; using magneto-resistive devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants; Measuring impedance or related variables
    • G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00 and G01R33/00 - G01R35/00
    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only

Similar Documents

Publication Publication Date Title
Cochems et al. In-circuit-measurement of parasitic elements in high gain high bandwidth low noise transimpedance amplifiers
Scandurra et al. Differential ultra low noise amplifier for low frequency noise measurements
Li et al. Ultralow noise low offset chopper amplifier for induction coil sensor to detect geomagnetic field of 1 mHz to 1 kHz
Mishonov et al. Simple do-it-yourself experimental set-up for electron charge qe measurement
Xie et al. Analog circuits soft fault diagnosis using Rényi’s entropy
Montgomery Transistor noise in circuit applications
Tangsrirat Current differencing transconductance amplifier-based current-mode four-phase quadrature oscillator
Vopálenský et al. Wattmeter with AMR sensor
Hagh et al. A wideband, sensitive current sensor employing transimpedance amplifier as interface to Rogowski coil
Nording et al. Measurement system for temperature dependent noise characterization of magnetoresistive sensors
Nie et al. Journal of Environmental and Engineering Geophysics
Frater Accurate Wideband Multiplier—Square‐Law Detector
CN116626562A (en) A Miniaturized Digital GMI Sensor for Weak Alternating Magnetic Field Measurement
Muñoz et al. Active power analog front-end based on a Wheatstone-type magnetoresistive sensor
Li et al. A novel modem model insensitive to the effect of the modulated carrier and the demodulated-signal phase adapted for capacitive sensors
Setiadi et al. Inductance analyzer based on auto-balanced circuit for precision measurement of fluxgate impedance
Joshi et al. A 6.5-$\mu\text {W} $/MHz Charge Buffer With 7-fF Input Capacitance in 65-nm CMOS for Noncontact Electropotential Sensing
Hoja et al. An analysis of a measurement probe for a high impedance spectroscopy analyzer
Bojkovski et al. Sound-card-based Johnson noise thermometer
Jonker et al. Automated system for noise-measurements on low-ohmic samples and magnetic sensors
Li et al. A high-precision digital integrator based on the Romberg algorithm
Kim et al. A parallel input composite transimpedance amplifier
He et al. Signal Conditioning Techniques
Gopman et al. A digitally configurable measurement platform using audio cards for high-resolution electronic transport studies
Zhang et al. Design of analog front-end circuit for audio-frequency magnetotelluric instrument