Title :
A new scheme of coupling VCOs for the purpose of injection locking frequency divider
Author :
Rezaei, Masoud ; Sepehrian, Hassan ; Naseh, Sasan
Author_Institution :
E.E. Dept., Ferdowsi Univ. of Mashhad, Mashhad, Iran
Abstract :
The coupling of oscillators is reviewed. A new scheme of coupling of VCOs is proposed in which no extra elements are needed to couple the VCOs, which leads to a lower phase noise and power consumption. Based on simulation results, a lock-in range from 15.7 GHz to 18.7 GHz for a divide-by-3, and from 16.4 GHz to 17 GHz for a divide-by-5 were achieved with a 180 nm CMOS technology with a Vdd=1.8 V.
Keywords :
CMOS integrated circuits; field effect MMIC; frequency dividers; voltage-controlled oscillators; CMOS technology; VCO coupling; frequency 15.7 GHz to 18.7 GHz; injection locking frequency divider; size 180 nm; voltage 1.8 V; voltage controlled oscillator; Couplings; Frequency conversion; Harmonic analysis; Injection-locked oscillators; Phase noise; Power demand; Injection locking; low power; phase noise; voltage controlled oscillator;
Conference_Titel :
Electronics, Circuits and Systems (ICECS), 2011 18th IEEE International Conference on
Conference_Location :
Beirut
Print_ISBN :
978-1-4577-1845-8
Electronic_ISBN :
978-1-4577-1844-1
DOI :
10.1109/ICECS.2011.6122346
