Title :
A wide-locking range divide-by-2 LC-tank injection-locked frequency divider
Author :
Jang, Sheng-Lyang ; Liu, Cheng-Chen ; Liao, Ying-Hsiang ; Yang, Ren-Kai
Author_Institution :
Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan
Abstract :
A new wide locking range injection-locked frequency divider (ILFD) using a standard 0.18 μm CMOS process is presented. The ILFD is based on a differential VCO with one injection MOSFET for coupling the external signal to the resonator. The locking range of the ILFD is increased by using a new LC resonator. Measurement results show that at the supply voltage of 0.75 V, the divider´s free-running frequency is tunable from 3.91 to 3.956 GHz, and at the incident power of 0 dBm the locking range is about 7.07 GHz (91%), from the incident frequency 4.23 to 11.3 GHz. The ILFD has a record locking range percentage among published divide-by-2 LC-tank cross-coupled ILFDs.
Keywords :
CMOS analogue integrated circuits; MOSFET; frequency dividers; injection locked oscillators; resonators; voltage-controlled oscillators; CMOS process; LC resonator; differential VCO; divide-by-2 LC-tank injection-locked frequency divider; free-running frequency; incident frequency; injection MOSFET; locking range; record locking range percentage; size 0.18 mum; supply voltage; voltage 0.75 V; wide locking range injection-locked frequency divider; CMOS process; Capacitance; Circuit optimization; Circuit simulation; Frequency conversion; Frequency measurement; Injection-locked oscillators; MOSFET circuits; Voltage; Voltage-controlled oscillators; CMOS; LC-tank injection-locked frequency divider; VCO; locking range;
Conference_Titel :
VLSI Design Automation and Test (VLSI-DAT), 2010 International Symposium on
Conference_Location :
Hsin Chu
Print_ISBN :
978-1-4244-5269-9
Electronic_ISBN :
978-1-4244-5271-2
DOI :
10.1109/VDAT.2010.5496698
