Patent ID: 6968020
Filing Date: 2005-11-22
Classification: H04B

Abstract:
1. In a broadband tuner for use in a broadband receiver, a system for generating selectable signals for tuning, the system comprising: a divider-shifter that divides and shifts a local oscillator signal to obtain in-phase and quadrature components of a selected channel frequency, wherein said divider-shifter divides the local oscillator signal by a first-number when the selected channel frequency is within a first-band, and wherein said divider-shifter divides the local oscillator signal by a second-number when the selected channel frequency is within a second-band; an N-divider that divides the local oscillator signal by a value N before comparison with a reference frequency, thereby enabling a current frequency of the local oscillator signal to be locked to the value N multiplied by the reference frequency, said N-divider comprising: a selected frequency identifier that determines whether the selected channel frequency falls within the first-band or the second-band, causes said divider-shifter to divide by an appropriate number, and programs the value N such that the current frequency of the local oscillator signal is equal to the first-number times the selected channel frequency when the selected channel frequency falls within the first-band and the current frequency of the local oscillator signal is equal to the second-number times the selected channel frequency when the selected channel frequency falls within the second-band.