Title :
A 2.4-GHz sub-mW frequency source with current-reused frequency multiplier
Author :
Song, Taeksang ; Oh, Hyoung-Seok ; Yang, Jaemo ; Yoon, Euisik ; Hong, Songcheol
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon
Abstract :
A fully integrated 2.4 GHz low-power frequency source including a 1.2 GHz voltage-controlled oscillator (VCO) and a current-reused frequency multiplier is fabricated in 0.18-mum CMOS process. The proposed frequency source tunes from 2.22 GHz to 2.45 GHz by changing control bias from 0 V to 0.7V, and achieves a phase noise of -115.83 dBc/Hz at 1 MHz offset from a 2.2 GHz carrier frequency while drawing only 840 muA bias current (490 muA for a 1.2 GHz VCO and 350 muA for the frequency multiplier) from the low supply voltage of 0.7 V
Keywords :
CMOS integrated circuits; UHF frequency convertors; frequency multipliers; low-power electronics; voltage-controlled oscillators; 0.18 micron; 0.7 V; 2.22 to 2.45 GHz; 350 muA; 490 muA; 840 muA; CMOS process; UHF source; current-reused frequency multiplier; low-power frequency source; pinch-off clipper; sub-mW frequency source; voltage-controlled oscillator; CMOS process; Circuit topology; Energy consumption; Frequency conversion; Phase noise; Radio frequency; Signal generators; Voltage control; Voltage-controlled oscillators; Wireless sensor networks;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2006 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9572-7
DOI :
10.1109/RFIC.2006.1651085
