Low power CMOS transmitter for biomedical sensing devices

Author

Dupire, T. ; Tanguay, L.F. ; Sawan, M.

Author_Institution

Polystim Neurotechnol. Lab., Montreal

fYear

2006

fDate

10-13 Dec. 2006

Firstpage

339

Lastpage

342

Abstract

We describe in this paper two low power transmitters that operates within the 402-405 MHz band allocated for medical implant communication systems (MICS). A frequency modulation scheme is employed. Each one of the transmitters includes a frequency synthesizer, a power amplifier and a matching network. The difference between the two architectures relies on the frequency synthesizer, which uses a new oscillator topology. These circuits are based on the Pierce configuration and use a surface acoustic wave (SAW) resonator. Both versions have been implemented in a 0.1 Hum CMOS process from TSMC and their performances have been compared. With a total power consumption of 2 mW, the radiated power is 0.3 mW allowing a transmission range of about 5 meters.

Keywords

CMOS integrated circuits; UHF integrated circuits; biomedical communication; prosthetics; radio transmitters; CMOS process; Pierce configuration; biomedical sensing devices; distance 5 m; frequency modulation; frequency synthesizer; low power CMOS transmitter; matching network; medical implant communication systems; oscillator topology; power 0.3 mW; power 2 mW; power amplifier; size 0.18 mum; surface acoustic wave resonator; Circuit topology; Frequency modulation; Frequency synthesizers; Implants; Microwave integrated circuits; Network topology; Oscillators; Power amplifiers; Surface acoustic waves; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2006. ICECS '06. 13th IEEE International Conference on

Conference_Location

Nice

Print_ISBN

1-4244-0395-2

Electronic_ISBN

1-4244-0395-2

Type

conf

DOI

10.1109/ICECS.2006.379794

Filename

4263372