US Patent 7653359 Techniques to decrease fractional spurs for wireless transceivers

Various embodiments are disclosed relating to techniques to reduce spurs in wireless transceivers. In an example embodiment, a first fractional-N divide ratio for a first frequency synthesizer may be set based on a selected channel. A second fractional-N divide ratio for a second frequency synthesizer may be set to a fixed value independent of the selected channel. The second fractional-N divide ratio may be set to a value that is sufficiently distant from an integer value so as to decrease the likelihood of at least some type(s) of spurs.