A new look into the PLL response degradation due to VCO nonlinearity and its compensation technique

Authors
Sarkar, BC De, B
Citation
Bc. Sarkar et B. De, A new look into the PLL response degradation due to VCO nonlinearity and its compensation technique, I J PA PHYS, 38(10), 2000, pp. 734-740
Citations number
10
Categorie Soggetti
Physics
Journal title
INDIAN JOURNAL OF PURE & APPLIED PHYSICS
ISSN journal
00195596 → ACNP
Volume
38
Issue
10
Year of publication
2000
Pages
734 - 740
Database
ISI
SICI code
0019-5596(200010)38:10<734:ANLITP>2.0.ZU;2-M
Abstract
Considering the nonlinearity of the voltage transfer characteristics for a practical voltage controlled oscillator (VCO) used in phase locked loops (P LLs), the distortion in the response of a PLL in transient mode as well as FM tracking mode has been numerically studied. The inclusion of a suitably designed nonlinear amplifier in the PLL structure has been proposed to comb at the adverse effects of VCO nonlinearity. The response of the modified PL L system has been examined through simulation experiment.