Patent ID: 7928808
Filing Date: 2011-04-19
Classification: H03B

Abstract:
1. A method for configuring a selectable local oscillator to provide an output frequency signal having a selectable frequency within a desired output frequency range, wherein the method comprises: determining first, second and third input frequency ranges; generating first, second and third selectable frequency signals from the first, second and third input frequency ranges respectively; mixing the first selectable frequency signal with the second selectable frequency signal to provide a first mixed product signal having an upper sideband and a lower sideband; selecting one of the upper and lower sidebands of the first mixed product signal; mixing the selected sideband with the third selectable frequency signal to provide a second mixed product signal having an upper sideband and a lower sideband; and selecting at least one of the upper and lower sidebands of the second mixed product signal as the output frequency signal wherein the step of determining the first, second and third input frequency ranges comprises: