Title :
First-Harmonic Injection-Locked Ring Oscillators
Author :
Mesgarzadeh, Behzad ; Alvandpour, Atila
Author_Institution :
Dept. of Electr. Eng., Linkoping Univ.
Abstract :
This paper presents an analysis of first-harmonic injection locking in CMOS ring oscillators. In this analysis, Adler´s equation is proved by using a new analytical approach based on the propagation delay of an inverter stage. Also the behavior of the injection-locked ring oscillators from phase noise point of view is discussed and a closed-form equation for the phase noise of such oscillators is derived. According to the measurement results on a DLL-based frequency multiplier implemented in 0.13-mum CMOS process, good agreement between theoretical prediction and measurements is observed
Keywords :
CMOS integrated circuits; frequency multipliers; harmonic oscillators (circuits); injection locked oscillators; logic circuits; 0.13 micron; Adler equation; CMOS ring oscillators; DLL-based frequency multiplier; first-harmonic injection locking; inverter stage; propagation delay; Capacitors; Circuits; Equations; Frequency; Injection-locked oscillators; Inverters; Phase noise; Propagation delay; Ring oscillators; Voltage-controlled oscillators;
Conference_Titel :
Custom Integrated Circuits Conference, 2006. CICC '06. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
1-4244-0075-9
Electronic_ISBN :
1-4244-0076-7
DOI :
10.1109/CICC.2006.320927
