Title :
A 0.35 µm CMOS LC-tank injection-locked frequency divider
Author :
Chtioui, Thaoura ; Ben Issa, Dalenda ; Fakhfakh, Ahmed ; Samet, Mounir
Author_Institution :
Lab. of Electron. & Technol. of Inf. (LETI), Nat. Eng. Sch. of Sfax, Sfax, Tunisia
Abstract :
A divide-by-2 injection-locked frequency divider (ILFD) has been designed in a 0.35 μm CMOS process. The ILFD circuit is realized with a differential CMOS LC-tank oscillator with an injection MOS. Simulation results show that at the supply voltage of 2.5 V and by tuning Vtune from 0 to 2.5 V, the tuning range of the free-running ILFD is from 1.84 to 2.89 GHz. At the injection signal power of 0 dBm, the locking range of the proposed ILFD is about 2.49 GHz from the incident frequency 3.53 to 6.02 GHz. The ILFD dissipate 3.43 mW. At the tuning voltage of 1.6 V the simulated phase noise of the free running ILFD is -125.6 dBc/Hz at 1.066 MHz offset frequency at 2.65 GHz and the phase noise of the locked output is -132.7 dBc/Hz while the phase noise of the injected signal is -126.7 dBc/Hz.
Keywords :
CMOS integrated circuits; frequency dividers; injection locked oscillators; phase noise; CMOS LC-tank oscillator; ILFD circuit; LC-tank injection-locked frequency divider; frequency 1.066 MHz; frequency 1.84 GHz to 2.89 GHz; frequency 2.65 GHz; frequency 3.53 GHz to 6.02 GHz; injection MOS; phase noise; power 3.43 mW; size 0.35 micron; voltage 1.6 V; CMOS process; Circuit optimization; Circuit topology; Energy consumption; Frequency conversion; Injection-locked oscillators; Logic; Phase noise; Tuning; Voltage-controlled oscillators;
Conference_Titel :
Design and Technology of Integrated Systems in Nanoscale Era (DTIS), 2010 5th International Conference on
Conference_Location :
Hammamet
Print_ISBN :
978-1-4244-6338-1
DOI :
10.1109/DTIS.2010.5487603
