Patent ID: 6751445
Filing Date: 2004-06-15
Classification: H03J,H03L

Abstract:
A receiver comprising a tuning system for tuning the receiver, the tuning system comprising:a frequency-synthesis circuit for generating a stepped-frequency signal having a frequency varying in steps with a step size; and a synchronization circuit for synchronizing a tuning oscillator with the stepped-frequency signal to form a tuning frequency varying with tuning steps, said synchronization circuit comprising means for providing an adjustable integer frequency relationship between the stepped-frequency signal and the tuning oscillator, characterized in that the frequency-synthesis circuit comprises means, coupled to said synchronization circuit, for varying the step size of the stepped-frequency signal in response to the adjustable integer-frequency relationship such that the tuning steps of the tuning frequency formed by the synchronization circuit are substantially uniform despite any changes in the adjustable integer-frequency relationship by said providing means.