An FPGA-Based DDS-Synchronized Quadrature Lock-In Module for Sweep-Field Demodulation in a Single-Beam SERF Magnetometer

Sweep-field operation in a single-beam spin-exchange relaxation-free (SERF) magnetometer requires stable extraction of the dispersion zero-crossing. A frequency mismatch between the modulation signal and the demodulation references, or an unsuitable low-pass filter, can shift this zero-crossing and...

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Detalhes bibliográficos

Principais autores:	Dongjing Zhang, Xiaojian Hao, Rui Jia, Xinying Yu, Yifei Fu, Nengqiang Ma, Zheming Cui
Formato:	Artigo
Idioma:	Inglês
Publicado em:	MDPI AG 2026-06-01
coleção:	Sensors
Assuntos:	SERF magnetometer FPGA digital lock-in amplifier direct digital synthesizer quadrature demodulation sweep-field demodulation
Acesso em linha:	https://www.mdpi.com/1424-8220/26/12/3850
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