Response of an All Digital Phase-Locked Loop
J. Garodnick, J.D. Greco, Donald L. Schilling
Abstract
J. Garodnick, J.D. Greco, Donald L. Schilling
Abstract
An all digital phase-locked loop (DPLL) is designed, analyzed, and tested. Three specific configurations are considered, generating first, second, and third order DPLL's; and it is found, using a computer simulation of a noise spike, and verified experimentally, that of these configurations the second-order system is optimum from the standpoint of threshold extension. This substantiates results obtained for analog PLL's.
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An all digital phase-locked loop (DPLL) is designed, analyzed, and tested. Three specific configurations are considered, generating first, second, and third order DPLL's; and it is found, using a computer simulation of a noise spike, and verified experimentally, that of these configurations the second-order system is optimum from the standpoint of threshold extension. This substantiates results obtained for analog PLL's.
Key concepts: DPLL algorithm, Phase-locked loop, Loop (graph theory), PLL multibit, Noise (video), Phase (matter), Control theory (sociology), Third order