Accurate PLL Characterization Using Virtuoso Spectre RF Noise ...

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16 Non-linear VCO PPV Model • • α(t) is the phase deviation due to perturbation of the VCO and satisfies the nonlinear differential equation. Owing to the PPV, νT 1(t), oscillator phase deviations due to perturbations can be efficiently evaluated by solving the one– dimensional nonlinear differential equation (1). The PPV relates the changes in the circuit’s nodes voltages or currents to the VCO phase. September 17, 2007 • α () t v n() t T = ∗ 1 (10)
17 SpectreRF’s PPV-based VCO Model • • SpectreRF’s PSS analysis calculates and outputs the PPV for an oscillator in a file stored in the simulation results directory. SpectreRF uses the information about a VCO’s PPV to implement a trajectory-piecewise PPV model for the VCO. September 17, 2007 [6]
Page 1 and 2: INVENTIVE Using Spectre RF Noise-Aw
Page 3 and 4: 3 • • • Introduction Phase lo
Page 5 and 6: 5 Challenges of PLL Simulation •
Page 7 and 8: 7 V R Spectre RF Noise-Aware PLL Si
Page 9 and 10: 9 PLL Model Extraction Flow • •
Page 11 and 12: 11 September 17, 2007 PLL testbench
Page 13 and 14: 13 Non-Linear VCO Modeling • •
Page 15: 15 Effect of Noise and Perturbation
Page 19 and 20: 19 • • • Strengths of Spectre
Page 21 and 22: 21 Using Spectre RF Noise-Aware PLL
Page 23 and 24: 23 September 17, 2007 PPV versus tr
Page 25 and 26: 25 PLL Noise-Aware Flow Experimenta
Page 27 and 28: 27 Conclusions • • • • Cade
Page 29 and 30: 29 References • • • • • [

Accurate PLL Characterization Using Virtuoso Spectre RF Noise ...

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