Title :
Power optimization of CMOS LC VCOs
Author :
Hsieh, Ming-ta ; Harvey, Jackson ; Harjani, Ramesh
Author_Institution :
Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA
Abstract :
A technique is presented for the minimization of power consumption in a LC tank voltage-controlled oscillator for low-power wireless systems, such as wireless sensors. This technique involves finding the power constraints for a given inductor design, and then making an optimal tradeoff between inductor series resistance and stray capacitance. The technique and the analytic model are then used to optimize the power consumption of an LC oscillator. The oscillator performance is verified via simulation. The simulated performance matches the predicted performance well. Optimized designs using this technique can result in 100% or more reduction of power in comparison to sub-optimal design
Keywords :
CMOS analogue integrated circuits; UHF integrated circuits; UHF oscillators; inductors; low-power electronics; transceivers; voltage-controlled oscillators; CMOS LC VCOs; LC tank voltage-controlled oscillator; inductor design; low-power wireless systems; power constraints; power consumption; power consumption minimisation; series resistance; stray capacitance; wireless sensors; Capacitance; Design optimization; Energy consumption; Frequency; Inductors; Phase noise; Spirals; Varactors; Voltage-controlled oscillators; Wireless sensor networks;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.922338
