Device and method for frequency synthesis with high spectral purity
OwnerPascal Gabet, Jean-Luc De Gouyinventors
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Abstract
A method and device is provided to synthesize a frequency F1→F2 with high spectral purity, the device entails a variable-step synthesizer F3→F4, which contains and least one variable-rank divider Nb located after the synthesizer and a frequency control device delivering the division rank command of the variable-rank divider, the command of the frequency of the variable-step synthesizer and the command of the synthesis step of the variable-step synthesizer.
Claims17
A device to synthesize a frequency F1→F2 with high spectral purity, comprising a synthesizer with a variable step F3→F4, comprising at least one variable rank divider Nb located after said synthesizer and a frequency control device delivering the division rank command of the variable rank divider, the command of the frequency of the variable-step synthesizer, the command of the synthesis step of the variable-step synthesizer.
A method to synthesize a frequency F1→F2 with high spectral purity using a variable-step synthesizer F3→F4, comprising at least one step in which the output signal of the variable-step synthesizer is transmitted to a multiple-rank divider Np and wherein the division rank, the synthesis step of the synthesizer and the frequency of the variable-step synthesizer are modified.
A method according to one of the above claims wherein the ratio of the reference frequency to the frequency step, Fref/ΔF, is the LCM of the sequence N1 . . . Np.
Dependencies are inferred from the claim text.