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Nonlinear dynamics of a third order phase locked
loop (PLL) using a resonant low pass filter in the face of
continuous wave (CW) and frequency modulated (FM) input
signals is examined. The role of design parameters of the
loop resonant filter and the modulation index of the input FM
signal on the system dynamics is studied numerically as well
as experimentally. The occurrence of chaotic oscillations in
the PLL is verified by evaluating some wellknown chaos
quantifiers like Lyapunov Exponents from the numerical time
series data.
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