Title :
A 2.4GHz CMOS VCO Design
Author :
Hong Qi ; Zhao Yuhao
Author_Institution :
Sch. of Electr. Sci. & Technol., Anhui Univ., Hefei
Abstract :
A single resistor was used between the drain node of the bias transistor and the source node of the differential transistors. The wide-band nature of resistance can suppress the 2nd harmonic as well as other even harmonics leaking from the LC tank across the full period of oscillation. A fully integrated 2.4 GHz all PMOS LC VCO was implemented in a 0.35 mum CMOS process. The simulation results show the achieved phase noise of -121dBc/Hz@600 kHz.
Keywords :
CMOS integrated circuits; UHF integrated circuits; harmonics suppression; integrated circuit design; voltage-controlled oscillators; 2nd harmonic suppress; CMOS VCO design; LC tank; PMOS LC VCO; bias transistor; differential transistors; frequency 2.4 GHz; frequency 600 kHz; harmonics leaking; oscillation; single resistor; size 0.35 mum; 1f noise; Filtering; Low-frequency noise; MOS devices; Phase noise; Power harmonic filters; Radio frequency; Resistors; Voltage-controlled oscillators; Wideband;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1311-9
DOI :
10.1109/WICOM.2007.173
