Acquisition time improvement of PLLs using some aiding functions
Abstract
Analytical studies are carried out to minimize acquisition time in phase-lock loop (PLL) applications using aiding functions. A second order aided PLL is realized with the help of the quasi-stationary approach to verify the acquisition behavior in the absence of noise. Time acquisition is measured both from the study of the LPF output transient and by employing a lock detecting and indicating circuit to crosscheck experimental and analytical results. A closed form solution is obtained for the evaluation of the time acquisition using different aiding functions. The aiding signal is simple and economical and can be used with state of the art hardware.
- Publication:
-
Indian Institute of Science Journal
- Pub Date:
- March 1981
- Bibcode:
- 1981InISJ..63...73V
- Keywords:
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- Communication Networks;
- Phase Locked Systems;
- Radio Electronics;
- Signal Detection;
- Computer Techniques;
- Differential Equations;
- Electronic Warfare;
- Numerical Analysis;
- Signal To Noise Ratios;
- Space Communication;
- Electronics and Electrical Engineering