Title :
Design of wide tuning injection locked frequency divider and LC_VCO for multi-standards applications
Author :
Chtioui, Thaoura ; Bissa, D. ; Fakhfakh, Ahmed ; Samet, Mounir
Author_Institution :
Lab. of Electron. & Technol. of Inf. (LETI), Nat. Sch. of Eng. Sfax, Sfax, Tunisia
Abstract :
A design of divide-by-2 injection-locked frequency divider (ILFD) and LC_VCO is presented in this work. The ILFD circuit is realized with a differential CMOS LC-tank oscillator with an injection MOS. The proposed design accomplishes wide tuning range frequency by using binary weighted switched varactor in addition to a linearly varying varactor. It can be applied for multi-standard wireless applications. The tuning range of the ILFD carrier frequency is from 1.2 to 1.75GHz. At the injection signal power of 0 dBm, the locking range is about 1.1 GHz from the incident frequency 2.4 to 3.5 GHz. The phase noise of the locked output is -123.4 dBc/Hz at 1 MHz offset frequency. The power consumption of total circuit is 22.98mW. Only 6.19 mW is consumed by the ILFD.
Keywords :
CMOS integrated circuits; LC circuits; MMIC oscillators; UHF oscillators; field effect MMIC; frequency dividers; radiocommunication; varactors; voltage-controlled oscillators; LC VCO; binary weighted switched varactor; differential CMOS LC-tank oscillator; divide-by-two injection locked frequency divider; frequency 1.2 GHz to 1.75 GHz; frequency 2.4 GHz to 3.5 GHz; injection MOS; linearly varying varactor; multistandard wireless application; multistandards application; power 22.98 mW; power 6.19 mW; wide tuning injection locked frequency divider; Capacitance; Frequency conversion; Phase noise; Power demand; Tuning; Varactors; Voltage-controlled oscillators; ILFD; RF system; VCO; inductor model; phase noise; varactor;
Conference_Titel :
Systems, Signals and Devices (SSD), 2012 9th International Multi-Conference on
Conference_Location :
Chemnitz
Print_ISBN :
978-1-4673-1590-6
Electronic_ISBN :
978-1-4673-1589-0
DOI :
10.1109/SSD.2012.6197916
