TY - GEN
T1 - Capacitor bank design for wide tuning range LC VCOs
T2 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010
AU - Sadhu, Bodhisatwa
AU - Harjani, Ramesh
PY - 2010
Y1 - 2010
N2 - This paper describes novel design techniques for optimizing the switched-capacitor array in a wide tuning range LC VCO. The switches in the capacitor array are optimally sized to maximize the tuning range. Additionally, parasitic interconnect inductance inherent in the capacitor array is used for increasing the equivalent capacitance value. Based on these proposed techniques, an LC VCO that achieves 157% frequency tuning range from 850MHz to 7.1GHz with phase noise between -107.1 and -119.1 dBc/Hz at 1MHz offset and power dissipation between 3 and 15 mW is designed. The power and phase noise performance of this VCO is at par with the best wideband solutions. However, this is, by far, the largest tuning range obtained for CMOS LC VCOs till date.
AB - This paper describes novel design techniques for optimizing the switched-capacitor array in a wide tuning range LC VCO. The switches in the capacitor array are optimally sized to maximize the tuning range. Additionally, parasitic interconnect inductance inherent in the capacitor array is used for increasing the equivalent capacitance value. Based on these proposed techniques, an LC VCO that achieves 157% frequency tuning range from 850MHz to 7.1GHz with phase noise between -107.1 and -119.1 dBc/Hz at 1MHz offset and power dissipation between 3 and 15 mW is designed. The power and phase noise performance of this VCO is at par with the best wideband solutions. However, this is, by far, the largest tuning range obtained for CMOS LC VCOs till date.
UR - http://www.scopus.com/inward/record.url?scp=77955998497&partnerID=8YFLogxK
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U2 - 10.1109/ISCAS.2010.5537040
DO - 10.1109/ISCAS.2010.5537040
M3 - Conference contribution
AN - SCOPUS:77955998497
SN - 9781424453085
T3 - ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems
SP - 1975
EP - 1978
BT - ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems
Y2 - 30 May 2010 through 2 June 2010
ER -