Title :
Split-loop method for wide-range frequency synthesiser with good dynamic performance
Author :
Underhill, Michael J. ; Jordan, P.A.
Author_Institution :
Philips Research Laboratories, Redhill, UK
Abstract :
In a p.l.l. frequency synthesiser with a wide-range varactor-tuned oscillator, the proportional path gain can be made nearly constant by the split-loop method. Good dynamic performance is then maintained over the range despite any integral-path gain variation caused by a nonlinear varactor capacitance law.
Keywords :
frequency synthesizers; phase-locked loops; tuning; varactors; variable-frequency oscillators; PLL frequency synthesizers; dynamic performance; nonlinear varactor capacitance law; split loop method; varactor tuned oscillator; wide range frequency synthesizers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19790282
