TY - GEN
T1 - A variable inductor using mutual-current control and application to a SiGe 4.5-GHz VCO for wide tuning range
AU - Nakamura, Takahiro
AU - Masuda, Toru
AU - Kodama, Akihiro
AU - Washio, Katsuyoshi
PY - 2005
Y1 - 2005
N2 - A novel variable inductor using mutual current control was developed and applied to a 4.5-GHz SiGe voltage controlled oscillator (VCO). It consists of a primary inductor, a secondary inductor, and a variable capacitor, and its inductance can be tuned by adjusting the capacitance of the capacitor. It was designed for application to a proposed 4.5-GHz VCO in 0.25-μm SiGe BiCMOS technology. It exhibited a large inductance variation of 22% and a high quality factor of 24 at 4.5 GHz in electro-magnetic simulation. The VCO has a 1.2-GHz tuning range, 32% wider than that of a conventional VCO, and a low phase noise of -121.8 dBc/Hz (at a 1-MHz offset frequency).
AB - A novel variable inductor using mutual current control was developed and applied to a 4.5-GHz SiGe voltage controlled oscillator (VCO). It consists of a primary inductor, a secondary inductor, and a variable capacitor, and its inductance can be tuned by adjusting the capacitance of the capacitor. It was designed for application to a proposed 4.5-GHz VCO in 0.25-μm SiGe BiCMOS technology. It exhibited a large inductance variation of 22% and a high quality factor of 24 at 4.5 GHz in electro-magnetic simulation. The VCO has a 1.2-GHz tuning range, 32% wider than that of a conventional VCO, and a low phase noise of -121.8 dBc/Hz (at a 1-MHz offset frequency).
KW - C-band
KW - SiGe HBT
KW - VCO
KW - Variable inductor
KW - W-CDMA
KW - Wide tuning range
UR - http://www.scopus.com/inward/record.url?scp=33847219003&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33847219003&partnerID=8YFLogxK
U2 - 10.1109/APMC.2005.1606398
DO - 10.1109/APMC.2005.1606398
M3 - Conference contribution
AN - SCOPUS:33847219003
SN - 078039433X
SN - 9780780394339
T3 - Asia-Pacific Microwave Conference Proceedings, APMC
BT - APMC 2005
T2 - APMC 2005: Asia-Pacific Microwave Conference 2005
Y2 - 4 December 2005 through 7 December 2005
ER -