Title :
A Low hase Noise Quadrature LC-VCO in 0.18-μm CMOS Technology
Author :
Wang, Y. ; Zhu, Y.F. ; Jiang, N. ; Chi, Y.S. ; Huang, F.Y.
Author_Institution :
RF&OEIC Res. Inst., South-east Univ., Nanjing
Abstract :
A 5.2-GHz quadrature LC voltage controlled oscillator (VCO) has been designed in a standard 0.18-mum CMOS process. Digitally controlled switch array is used in this design to achieve sufficient frequency tuning range and low phase noise. The oscillation frequency can be tuned from 5.03 GHz to 5.32 GHz through the 2-bit switch array. With the selection of an optimal on-chip inductor, the quadrature VCO achieves a single-sideband phase noise of -116 dBc/Hz at 1.0 MHz offset frequency consuming total 9.8 mA of current from a 1.5 V power supply.
Keywords :
CMOS integrated circuits; circuit tuning; digital control; microwave integrated circuits; microwave oscillators; voltage-controlled oscillators; CMOS technology; current 9.8 mA; digitally controlled switch array; frequency 5.2 GHz; frequency tuning; low phase noise quadrature LC-VCO; on-chip inductor; size 0.18 mum; voltage 1.5 V; voltage controlled oscillator; CMOS process; CMOS technology; Digital control; Frequency; Phase noise; Phased arrays; Process control; Switches; Tuning; Voltage-controlled oscillators; CMOS; LC-VCO; Phase Noise; Quadrature VCO; Wireless Local Area Network (WLAN);
Conference_Titel :
Millimeter Waves, 2008. GSMM 2008. Global Symposium on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-1885-5
Electronic_ISBN :
978-1-4244-1886-2
DOI :
10.1109/GSMM.2008.4534549
