Modeling and Simulation of ΔΣ Fractional-N PLL Frequency Synthesizer in Verilog-AMS(Nonlinear Circuits,<Special Section>Nonlinear Theory and its Applications)

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概要

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• A Verilog-AMS model of a fractional-N frequency synthesizer is presented that is capable of predicting spurious tones as well as noise and jitter performance. The model is based on a voltage-domain behavioral simulation. Simulation efficiency is improved by merging the voltage controlled oscillator (VCO) and the frequency divider. Due to the benefits of Verilog-AMS, the ΔΣ modulator which is incorporated in the synthesizer is modeled in a fully digital way. This makes it accurate enough to evaluate how the performance of the frequency synthesizer is affected by cyclic behavior in the ΔΣ modulator. The spur-minimizing effect of an odd initial condition on the first accumulator of the ΔΣ modulator is verified. Sequence length control and its effect on the fractional-N frequency synthesizer are also discussed. The simulated results are in agreement with prior published data on fractional-N synthesizers and with new measurement results.

• 社団法人電子情報通信学会の論文
• 2007-10-01

著者

• Kennedy Michael

  Department Of Microelectronic Engineering And Tyndall National Institute University College Cork

• YE Zhipeng

  Department of Microelectronic Engineering and Tyndall National Institute, University College Cork

• CHEN Wenbin

  Department of Microelectronic Engineering and Tyndall National Institute, University College Cork

• Ye Zhipeng

  Department Of Microelectronic Engineering And Tyndall National Institute University College Cork

• Chen Wenbin

  Department Of Microelectronic Engineering And Tyndall National Institute University College Cork

• KENNEDY Michael

  Department of Electronic and Electrical Engineering, University College Dublin

• Kennedy Michael

  Department of Electrical and Electronic Engineering, University College Cork

関連論文

• Modeling and Simulation of ΔΣ Fractional-N PLL Frequency Synthesizer in Verilog-AMS(Nonlinear Circuits,Nonlinear Theory and its Applications)
• Chaotic Oscillators Derived from Saito's Double-Screw Hysteresis Oscillator (Special Section on Nonlinear Theory and Its Applications)
• Flexible Prototyping Platform for Synthesis of Constant Envelope Spread Spectrum (CE-SS) Waveforms(Nonlinear Theory and its Applications)
• Recent advances in the analysis, design and optimization of Digital Delta-Sigma Modulators

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