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all-digital frequency synthesizer in deep-submicron cmos
robert b. staszewski, poras t. balsara
Synopsis "all-digital frequency synthesizer in deep-submicron cmos"
this book describes techniques for the design and implementation of an all-digital rf synthesizer. the design of rf synthesizers remains one of the most challenging tasks in mobile rf systems because they must meet very stringent requirements of a low-cost, low-power and low-voltage monolithic implemen-tation while meeting the phase noise and switching transient specifications. the work presented here is an outcome of a recent investigation conducted to develop a synthesizer architecture that exploits the strong advantages of deep-submicron digital cmos process technology as well as advances in digital vlsi design. the underlying theme of the techniques presented here is to maximize a digitally-intensive imple-mentation by operating in a synchronous phase domain. the chief benefit obtained with this architecture is to allow the integration of the rf front-end with the digital back-end onto a single silicon die using a standard asic design methodology. the ideas developed here have been implemented in a commercial deep-submicron cmos process and demonstrated on a working silicon chip in a bluetooth transmitter for short-range communications and will soon be announced for a commercial single-chip gsm phone.