| 摘要 |
A signal processing circuitry for a SQUID comprising: a signal processing module coupled to receive a SQUID output signal, the signal processing module comprising a modulator and a phase tracking component; an integrator coupled to an output of the signal processing module; a feedback circuit arranged to provide a feedback signal to the SQUID in a FLL arrangement, the feedback signal including an integrator output signal, wherein the integrator output signal is modulated by a quadrature modulation from the modulator; the phase tracking module is configured to demodulate and unwrap a phase angle of the output of the SQUID and provide the unwrapped phase angle to the integrator. |
