Download Design Methodology for RF CMOS Phase Locked Loops by Carlos Quemada PDF

By Carlos Quemada

Engineers face stiff demanding situations in designing phase-locked loop (PLL) circuits for instant communications because of section noise and different hindrances. This functional e-book involves the rescue with a confirmed PLL layout and optimization technique that shall we designers determine their innovations, expect PLL habit, and strengthen cost effective PLLs that meet functionality specifications it doesn't matter what IC (integrated circuit) demanding situations they arrive up opposed to. This uniquely accomplished toolkit takes designers step by step via operation ideas, layout strategies, section noise research, structure issues, and CMOS realizations for every PLL development block. It presents a pattern layout of an absolutely built-in PLL for WLAN purposes, demonstrating each step from specifications definition and circuit characterization to structure new release and circuit schematics.

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1688–1694. 11a/b/g Wireless LANs,’’ IEEE Journal of Solid-State Circuits, Vol. 39, No. 12, December 2004, pp. 2250–2258. , RF Microelectronics, Upper Saddle River, NJ: Prentice-Hall, 1998. [14] Armada, A. , ‘‘Understanding the Effects of Phase Noise in Orthogonal Frequency Division Multiplexing (OFDM),’’ IEEE Trans. on Broadcasting, Vol. 47, No. 2, June 2001, pp. 153–159. , ‘‘Accurate Phase Noise Prediction in PLL Frequency Synthesizers,’’ Applied Microwave & Wireless, Vol. 12, No. 5, May 2000, pp.

These oscillators are suitable for full integrated implementation, and can also be operated at frequencies in the order of gigahertz with phase noise ranging around −115 dBc/Hz at 1 MHz for 5 GHz [1–12]. 3, followed by the models of phase noise found in the references. 5 outlines the most important considerations in the design of LC-tanks at the design layout stage. 2), their mode of operation is briefly described outlining the most important functioning characteristics. 1 Functional Description As its own name indicates this type of oscillator is based on a LC-tank circuit that generates a periodic output signal when it resonates.

The lowering of the power consumption starts with the use of a lower supply voltage, but this may lead to more stringent specifications. Thereby, a cautious and conscious design flow has to be taken into consideration to improve this data. 5 PLL Design Flow A PLL is a complex system and differs in the design approach from other circuits. For this reason, it is important to observe the different design levels and to ensure that each step forward is firmly based on correct parameters. In the next paragraphs we outline a design flow that could be used for PLL design: The first step is the determination of the initial requirements of the synthesizer.

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