SPECTRUM ANALYZER AND FREQUENCY LEVEL MEASUREMENT METHOD

摘要

Disclosed is a spectrum analyzer comprising a YIG oscillator whose output frequency is to be defined in response to a setpoint frequency request by means of a magnetic field that acts upon a YIG ball, only one tuning coil being provided that generates the magnetic field. The output frequency signal of the YIG oscillator is to be fed as a real value while the momentary frequency request of the spectrum analyzer is to be fed as a setpoint value of a PLL control circuit (4), with the aid of which the coil current of the tuning coil (2) is to be regulated by means of a voltage/power converter (5) that is connected downstream therefrom.