Patent ID: 8183941

Claim:
Electronic device for generating a local oscillator signal having a chosen frequency F LO from a main signal outputted by a voltage-controlled oscillator and having a fundamental frequency F VCO and harmonics thereof, characterized in that said electronic device comprises a frequency division means arranged to divide the frequency of a signal by a chosen factor N and a filter means arranged to select a chosen Mth order harmonic of a signal, said frequency division means and filter means being arranged to process said main signal in common to output said local oscillator signal with a chosen frequency F LO equal to MxF VCO /N; wherein said filter means comprises a first band-cut filter arranged to suppress frequencies of said main signal which are lying in a band extending up to the lower frequency of its Mth order harmonic, in order to output a first intermediate signal; and said filter means comprises a first band-pass filter arranged to pass frequencies of said first intermediate signal which are lying in a band centered on a first intermediate frequency, equal to the middle frequency of the Mth order harmonic of said main signal, in order to output a second intermediate signal.