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WRPLL simulation

A time domain simulation for WRPLL

Installation

poetry install
poetry run jupyter lab

poetry install
poetry shell

nix develop

Three notebook examples are included
1. helper_PLL_example.ipynb : helper PLL only
2. main_PLL_example.ipynb : main PLL only with a user specific helper frequency
3. both_PLL_example.ipynb : main and helper PLL
RAM usage and execution time estimate for simulation ONLY
- 500,000,000 time steps: 8GiB RAM and 55 seconds

WRPLL formulas

Assume the difference between f_{main}, f_{gtx} is very small
- Let f_{in} = f_{main} = f_{gtx}
- f_{helper} = f_{in} * \dfrac{N-1}{N}
- f_{beat} = f_{in} - f_{helper} = \dfrac{f_{in}}{N}
Main and helper Si549 DCXO ADPLL setting
- ADPLL = \dfrac{\Delta f_{outppm}}{0.0001164}