Phase-Noise Cancellation Design Tradeoffs in Delta–Sigma Fractional-N PLLs
نویسنده
چکیده
A theoretical analysis of a recently proposed phasenoise cancellation technique that relaxes the fundamental tradeoff between phase noise and bandwidth in fractionalphasedlocked loops (PLLs) is presented. The limits imposed by circuit errors and PLL dynamics on the phase noise and loop bandwidth that can be achieved by PLLs incorporating the technique are quantified. Design guidelines are derived that enable customization of the technique in terms of PLL target specifications.
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