Title :
The effect of parameter mismatches in RF VCO
Author :
Buonomo, Antonio ; Schiavo, AlessandroLo
Author_Institution :
Dipt. di Ing. dell´´Inf., Seconda Univ. degli Studi di Napoli, Aversa
Abstract :
We investigate the effect of the parameter mismatches on the oscillation frequency of a popular voltage controlled oscillator, whose behavior is schematized by a system of two mutually coupled oscillators. A perturbation analysis of this system is carried out using the method of two time scale. The existence of synchronization phenomena leading to a locking frequency is shown, which significantly differs from the natural frequencies of the tanks. Circuit simulations confirm the presence of a synchronized oscillation which is consistent with the prediction of the presented analysis.
Keywords :
perturbation techniques; synchronisation; voltage-controlled oscillators; RF VCO; locking frequency; oscillation frequency; parameter mismatch; perturbation analysis; synchronization phenomena; voltage controlled oscillator; Circuit simulation; Coupling circuits; Equations; Equivalent circuits; Frequency synchronization; Mutual coupling; Radio frequency; Resonant frequency; Varactors; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4541668
