| abstract |
An FMCW radar having a variable frequency microwave signal source for outputting a microwave signal, a frequency divider, a phase-locked loop, a loop filter and a reference signal source, is arranged in such a manner that the frequency divider is connected between the output of the variable frequency microwave signal source and an input of the phase-locked loop, the loop filter is connected between the output of the phase-locked loop and the input of the variable frequency microwave signal source, and the reference signal source is connected to an additional input of the phase-locked loop, the frequency divider being adjustable, especially digitally adjustable. The invention also relates to a method for operating an FMWC radar. Said method is characterized by adjusting a variable frequency microwave signal source by means of a regulator circuit which uses a reference signal of a reference signal source, especially of a quartz oscillator, as the reference value, and a frequency-divided output signal of the microwave signal source as the feedback value. |