TY - GEN
T1 - A dual-mode VCO based low-power synthesizer with optimized automatic frequency calibration for software-defined radio
AU - Zhou, Jin
AU - Li, Wei
AU - Huang, Deping
AU - Lian, Chen
AU - Li, Ning
AU - Ren, Junyan
PY - 2011/8/2
Y1 - 2011/8/2
N2 - A low power sigma-delta fractional-N frequency synthesizer for software-defined radio (SDR) implemented in a 0.13m CMOS process is presented, based on a dual-mode VCO (DMVCO) reconfigurable between wideband mode and quadrature mode, with optimized automatic frequency calibration (AFC). The proposed optimized AFC enables a more accurate band selection as well as a lower power for a dual-VCO PLL. A multi-phase counter (MPC) accelerates the calibration process without ruining the calibration accuracy. Simulated phase noise is -123dBc/Hz at 1MHz offset from a 1.8GHz carrier. The spectral purity is better than 45dBc from the output of mixer. The locking time of PLL is about 40s with an AFC time less than 10μs. The 0.4-6GHz synthesizer consumes only 35mW to 51mW from a 1.2V supply.
AB - A low power sigma-delta fractional-N frequency synthesizer for software-defined radio (SDR) implemented in a 0.13m CMOS process is presented, based on a dual-mode VCO (DMVCO) reconfigurable between wideband mode and quadrature mode, with optimized automatic frequency calibration (AFC). The proposed optimized AFC enables a more accurate band selection as well as a lower power for a dual-VCO PLL. A multi-phase counter (MPC) accelerates the calibration process without ruining the calibration accuracy. Simulated phase noise is -123dBc/Hz at 1MHz offset from a 1.8GHz carrier. The spectral purity is better than 45dBc from the output of mixer. The locking time of PLL is about 40s with an AFC time less than 10μs. The 0.4-6GHz synthesizer consumes only 35mW to 51mW from a 1.2V supply.
UR - http://www.scopus.com/inward/record.url?scp=79960888652&partnerID=8YFLogxK
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U2 - 10.1109/ISCAS.2011.5937773
DO - 10.1109/ISCAS.2011.5937773
M3 - Conference contribution
AN - SCOPUS:79960888652
SN - 9781424494736
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
SP - 1145
EP - 1148
BT - 2011 IEEE International Symposium of Circuits and Systems, ISCAS 2011
T2 - 2011 IEEE International Symposium of Circuits and Systems, ISCAS 2011
Y2 - 15 May 2011 through 18 May 2011
ER -