Fractional/Integer-N PLL Basics - TI.com
Technical BriefSWRA029Wireless Communication Business UnitAugust 1999Fractional/Integer-N PLL BasicsEdited by Curtis BarrettWireless Communication Business UnitAbstract Phase Locked Loop (PLL) is a fundamental part of radio, wireless and telecommunicationtechnology. The goal of this document is to review the theory, design and analysis of PLLcircuits. PLL is a simple negative feedback architecture that allows economicmultiplication of crystal frequencies by large variable numbers. By studying the loopcomponents and their reaction to various noise sources, we will show that PLL isuniquely suited for generation of stable, low noise tunable RF signals for radio, timing andwireless of the main challenges fulfilled by PLL technology are economy in size, power andcost while maintaining good spectral document details basic
Technical Brief SWRA029 Fractional/Integer-N PLL Basics 5 The problems associated with operating a wireless communications system have become especially acute in the last few years with the advance of cellular telephony and
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