SENSOR OF WEAK MAGNETIC FIELDS Russian patent published in 2019 - IPC G01R33/24 

FIELD: measuring equipment.

SUBSTANCE: invention relates to a measurement technique, namely, it is intended to measure weak magnetic fields, and can be used primarily in magnetometry. Sensor of weak magnetic fields contains a microwave generator, a sensitive element based on a thin magnetic film placed in a microstrip resonator, a magnetic system, amplitude detector, operational amplifier, compensation system and synchronous detection circuit. Directions of the high-frequency magnetic field and the constant displacement field coincide with the axis of the difficult magnetization of the film, and the directions of the measured field, the compensation field and the modulating field are perpendicular to the axis of the difficult magnetization of the film.

EFFECT: technical result – reducing the magnitude of the zero drift of the output signal of the magnetometer.

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