Title :
A Wideband CMOS LC-VCO Using Variable Inductor
Author :
Ohashi, Kazuma ; Ito, Yusaku ; Yoshihara, Yoshiaki ; Okada, Kenichi ; Masu, Kazuya
Author_Institution :
Integrated Res. Inst., Tokyo Inst. of Technol., Yokohama
Abstract :
This paper proposes a wide-range tunable CMOS voltage controlled oscillator (VCO). VCO uses an on-chip variable inductor and switched capacitors as variable elements. The VCO was fabricated using a standard 0.18 mum CMOS process with five metal layers. The oscillation frequency can be tuned from 1.28 GHz to 2.75 GHz with tuning range of 72 %.
Keywords :
CMOS integrated circuits; UHF integrated circuits; UHF oscillators; circuit tuning; inductors; switched capacitor networks; voltage-controlled oscillators; 0.18 micron; 1.28 to 2.75 GHz; CMOS process; switched capacitors; tunable CMOS voltage controlled oscillator; variable inductor; wideband CMOS LC-VCO; Capacitors; Circuits; Inductance; Inductors; Phase noise; Radio frequency; Spirals; Tuning; Voltage-controlled oscillators; Wideband;
Conference_Titel :
Design Automation Conference, 2007. ASP-DAC '07. Asia and South Pacific
Conference_Location :
Yokohama
Print_ISBN :
1-4244-0629-3
Electronic_ISBN :
1-4244-0630-7
DOI :
10.1109/ASPDAC.2007.357959
