Magnetic tuning device driving apparatus and a signal analyzer, as well as the magnetic tuning device driving method using the same

摘要

PROBLEM TO BE SOLVED: To provide a magnetically tuned device driver capable of expanding a frequency range when performing faster frequency sweep by an FM coil on a magnetic tuning device indicating an individually different tuning characteristic, and a signal analysis device using the same, and a method for driving the magnetically tuned device.SOLUTION: The magnetically tuned device driver comprises: a main coil drive circuit 11 for outputting a drive current to a main coil 31; a phase-locked loop circuit 13 for outputting a control signal for synchronizing the output signal of a YIG 33 to a reference signal Sr(f); an FM coil drive circuit 12 for outputting a drive current to an FM coil 32 on the basis of the control signal; a tuning characteristic calculation unit 15 for dividing the oscillation frequency range of the YTO 30 into a plurality of bands and calculating, for each of the bands, the tuning characteristic of the YTO 30 relative to the drive current of the main coil 31; and a drive current value determination unit 16 for determining, for each band, a set value for the drive current of the main coil 31 on the basis of the tuning characteristic.