Patent ID: 7023948
Filing Date: 2006-04-04
Classification: H03D,H04B

Abstract:
1. A signal generator arrangement, comprising: at least first and second successive heterodyne stages; the first heterodyne stage converting a modulation frequency input signal into an intermediate frequency by use of a fixed heterodyne frequency of an oscillator; the second heterodyne stage converting an input signal comprising said intermediate frequency into a desired output frequency by use of an adjustable heterodyne frequency of another oscillator; an adjustable frequency divider converting a difference frequency between the fixed heterodyne frequency and the adjustable heterodyne frequency into a lower divided frequency which is compared in a phase detector in a phase control loop to an output frequency of a reference oscillator so as to create an output signal of the phase detector; said another oscillator being synchronized with said reference oscillator output frequency by use of said phase detector output signal; and said reference oscillator comprising a synthesizer set in fine frequency increments.