Title :
Locked ranges of frequency divider based on injection-locked relaxation oscillator
Author :
Kitipongwatana, Arum ; Koseeyaporn, Jeerasuda ; Wardkein, Paramote ; Koseeyaporn, Poolsak
Author_Institution :
Dept. of Telecommun. Eng., King Mongkut´s Inst. of Technol., Bangkok, Thailand
Abstract :
In this article, the principle for determining locked ranges of the frequency divider based on the injection locked relaxation oscillator (ILRO-FD) is proposed. The proposed principle shows that the ILRO has many frequency-division ratios and can indicate that which ratios are suitable for frequency dividers. In addition, based on the proposed principle, it is found that the patterns of frequency-division ratios of ILRO depend on the charge-pump circuit´s current ratio. Moreover, the proposed principle is verified by the simulation results of the ILRO-FD based on 0.35um-CMOS technology of TSMC.
Keywords :
CMOS integrated circuits; charge pump circuits; frequency dividers; injection locked oscillators; relaxation oscillators; TSMC CMOS technology; charge pump circuit; frequency divider; frequency division ratios; injection locked relaxation oscillator; locked ranges; size 0.35 mum; Charge pumps; Frequency conversion; Iterative closest point algorithm; Mathematical model; Oscillators; Simulation; Threshold voltage; frequency divider(FD); injection locked relaxation oscillator (ILRO); locked ranges;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2015 12th International Conference on
Conference_Location :
Hua Hin
DOI :
10.1109/ECTICon.2015.7206946
