Analysis of LFMCW delay phase-locked linearization loop
Weidong Chen · Systems engineering and electronics · 2004
Unlike previous researches, the nonlinear analysis on the effects of delay-difference module employed in the delay phase-locked loop (DPLL)is particularly presented. The analysis results show how the nonlinear phase characteristic of the delay-difference module affects the nonlinear frequency error, and indicate that the utmost limit of FM linearity is largely determined by the nonlinear phase characteristic of the delay-difference module. Based on nonlinear loop models, quantitative analysis on noise performance and capture procedure of the DPLL is performed. The simulation results are in good accordance with the experimental data.