CMOS Single Chip Fast Frequency Hopping Synthesizers for by Taoufik Bourdi

CMOS Single Chip Fast Frequency Hopping Synthesizers for by Taoufik Bourdi

By Taoufik Bourdi

During this publication, the authors define distinct layout method for speedy frequency hopping synthesizers for RF and instant communications purposes. there's nice emphasis on fractional-N delta-sigma dependent section locked loops from requirements, approach research and structure making plans to circuit layout and silicon implementation. The built options within the e-book will help in designing very low noise, excessive pace fractional-N frequency synthesizers.

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Additional resources for CMOS Single Chip Fast Frequency Hopping Synthesizers for Wireless Multi-Gigahertz Applications: Design Methodology, Analysis, and Implementation

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White noise (1/f 0), flicker noise (1/f 1), Oscillator noise in the thermal region (1/ f 2), and oscillator noise in the upconverted flicker noise region (1/f 3) were also described. Loop filter design equations were shown and used in the case study of a frequency synthesizer potentially used in the WLAN standard. Phase-Locked Loop Frequency Synthesizers 43 The theory presented in this chapter as well as the detailed system level simulation presented in the chapter 4 aid the design and implementation of the two fractional-N synthesizer chips described in chapters 5 and 6.

Kozak, I. Kale, A. Borjak, and T. Bourdi, “A pipelined All-Digital Delta–Sigma Modulator for Fractional-N Frequency Synthesis,” IEEE Instrumentation and Measurement Technology Conference (IMTC 2000), Vol. 2, pp. 1153–1157, Baltimore, MD, May 2000. 11a, b, and g). In chapter 3, detailed analyses of integer-N and ∆−Σ-based fractional-N phaselocked loops have been presented. Open-loop, closed loop, and phase noise equations have been derived. In this chapter, behavioral modeling for a proposed fractional-N ∆−Σ-based PLL is carried out to evaluate architectural limitations, identify dominant noise sources, automate loop filter optimization, and generate PFD/CP linearity specifications.

The simulation results obtained in this chapter and measured results of subblocks of the chip designed in chapter 5 contribute to the optimum design and implementation of fractional-N synthesizers presented in chapters 5 and 6. 2 PHASE-DOMAIN MODEL Figure 4-1 shows a block diagram of a ∆−Σ-based fractional-N synthesizer. 11a frequencies that will be described in chapter 5. However, for simplicity, Figure 4-1 shows the synthesized frequency to be two-thirds of the desired frequency. 11a bands. The CadenceTM model of this synthesizer is shown in Figure 4-2.

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