Title :
A 5–20GHz tunable LC-VCO using variable bridge inductor
Author :
Tanabe, Akira ; Hijioka, Ken´ichiro ; Nagase, Hirokazu ; Hayashi, Yoshihiro
Author_Institution :
LSI Fundamental Res. Lab., NEC Electron. Corp., Sagamihara, Japan
Abstract :
An ultra-wide frequency range tunable LC-VCO is developed using a novel multi-stage variable inductor, which has a bridge architecture and a miniature 3D solenoid structure. Because of the inductor, the continuous tuning range over 15GHz (5~20GHz) is achieved with 10.6mW total power consumption. Phase noise at 1MHz offset is -103dBc/Hz @10GHz and -87dBc/Hz @20GHz. The chip area is smaller than 1/10 of wide range LC-VCOs reported.
Keywords :
inductors; solenoids; voltage-controlled oscillators; 3D solenoid structure; bridge architecture; frequency 5 GHz to 20 GHz; multistage variable inductor; tunable LC-VCO; ultra-wide frequency range; variable bridge inductor; Bridge circuits; Frequency conversion; Frequency synthesizers; Inductors; Switches; Tuning; LC-VCO; RF-CMOS; on-chip inductor;
Conference_Titel :
VLSI Circuits (VLSIC), 2010 IEEE Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-5454-9
DOI :
10.1109/VLSIC.2010.5560268
