Title :
A low-power MICS fractional-N frequency synthesizer for implantable biomedical systems
Author :
Kwan Wai Li ; Ka Nang Leung
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Hong Kong, China
Abstract :
A low-power fractional-N frequency synthesizer operates in the Medical Implantable Communications Service (MICS) band used in an injection-locked transmitter is presented in this paper. The synthesizer is fully integrated in a standard 0.18-μm CMOS process for wireless implantable biomedical applications. Simulation results show that the synthesizer achieves 15 μs locking time and consumes 4 mW at a power supply of 1.5 V.
Keywords :
CMOS integrated circuits; biomedical electronics; frequency synthesizers; low-power electronics; prosthetics; transmitters; CMOS process; implantable biomedical system; injection-locked transmitter; locking time; low-power MICS fractional-N frequency synthesizer; medical implantable communications service; power 4 mW; size 0.18 mum; time 15 mus; voltage 1.5 V; wireless implantable biomedical application; Frequency conversion; Frequency synthesizers; Microwave integrated circuits; Phase locked loops; Power demand; Transmitters; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems (APCCAS), 2012 IEEE Asia Pacific Conference on
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-4577-1728-4
DOI :
10.1109/APCCAS.2012.6418998
