A method for a radar device is described. According to one example implementation, the method comprises generating an RF signal using a voltage-controlled oscillator (VCO), wherein the frequency of the RF signal depends on a first tuning voltage and a second tuning voltage. The method also comprises setting the second tuning voltage using a phase-locked loop coupled to the VCO, with the result that the frequency of the RF signal corresponds to a desired frequency. The first tuning voltage is changed in such a manner that the second tuning voltage set by the phase-locked loop corresponds approximately to a predefined value. Another example implementation relates to a method for a radar device comprising: generating an RF signal using a VCO, wherein the frequency of the RF signal depends on a tuning voltage, setting the tuning voltage using a phase-locked loop coupled to the VCO, with the result that the frequency of the RF signal corresponds to a desired frequency, and determining a differential VCO gain of the VCO. The bandwidth of the phase-locked loop is set on the basis of the determined VCO gain.