Frequency generator designed to generate two pulse repetition frequency signals, whose frequencies are slightly different, for a radar measuring apparatus which functions according to the pulse correlation principle, wherein said frequency generator has the following elements: an oscillator, which generates an oscillator signal, a first signal path for generating a first pulse repetition frequency signal from the oscillator signal, and a second signal path for generating a second pulse repetition frequency signal from the oscillator signal, characterized in that the first signal path comprises: - a frequency divider or a first DDS module that is designed to generate a first frequency signal based on the oscillator signal, - a first mixer, which is designed to mix the first frequency signal, or a signal derived therefore, to an intermediate frequency band and to generate a first intermediate frequency signal, - a first ceramic bandpass filter, which is designed to filter out a selected frequency component of the first intermediate frequency signal and to generate a bandpass-filtered first intermediate frequency signal, and in that the second signal path comprises: - a second DDS module, which, based on the oscillator signal, is designed to generate a second frequency signal which differs from the first frequency signal by a predefined frequency offset, - a second mixer, which is designed to mix the second frequency signal, or a signal derived therefore, to an intermediate frequency band and to generate a second intermediate frequency signal, - a second ceramic bandpass filter, which is designed to filter out a selected frequency component of the second intermediate frequency signal and to generate a bandpass-filtered second intermediate frequency signal. an oscillator, which generates an oscillator signal, a first signal path for generating a first pulse repetition frequency signal from the oscillator signal, and a second signal path for generating a second pulse repetition frequency signal from the oscillator signal, characterized in that the first signal path comprises: - a frequency divider or a first DDS module that is designed to generate a first frequency signal based on the oscillator signal, - a first mixer, which is designed to mix the first frequency signal, or a signal derived therefore, to an intermediate frequency band and to generate a first intermediate frequency signal, - a first ceramic bandpass filter, which is designed to filter out a selected frequency component of the first intermediate frequency signal and to generate a bandpass-filtered first intermediate frequency signal, - a frequency divider or a first DDS module that is designed to generate a first frequency signal based on the oscillator signal, - a first mixer, which is designed to mix the first frequency signal, or a signal derived therefore, to an intermediate frequency band and to generate a first intermediate frequency signal, - a first ceramic bandpass filter, which is designed to filter out a selected frequency component of the first intermediate frequency signal and to generate a bandpass-filtered first intermediate frequency signal, and in that the second signal path comprises: - a second DDS module, which, based on the oscillator signal, is designed to generate a second frequency signal which differs from the first frequency signal by a predefined frequency offset, - a second mixer, which is designed to mix the second frequency signal, or a signal derived therefore, to an intermediate frequency band and to generate a second intermediate frequency signal, - a second ceramic bandpass filter, which is designed to filter out a selected frequency component of the second intermediate frequency signal and to generate a bandpass-filtered second intermediate frequency signal. - a second DDS module, which, based on the oscillator signal, is designed to generate a second frequency signal which differs from the first frequency signal by a predefined frequency offset, - a second mixer, which is designed to mix the second frequency signal, or a signal derived therefore, to an intermediate frequency band and to generate a second intermediate frequency signal, - a second ceramic bandpass filter, which is designed to filter out a selected frequency component of the second intermediate frequency signal and to generate a bandpass-filtered second intermediate frequency signal.