Abstract

A CMOS low-power transceiver for implantable and external health monitoring devices operating in the MICS band is presented. The LNA core has an integrated mixer in a folded configuration to reuse the bias current, allowing high linearity with a low power supply levels. The baseband strip consists of a pseudo differential MOS-C band-pass filter achieving demodulation of 150kHz-offset BFSK signals. An all digital frequency-locked loop is used for LO generation in the RX mode and for driving a class AB power amplifier in the TX mode. The MICS transceiver is designed and fabricated in a 0.18μm 1-poly, 6-metal CMOS process. The sensitivities of 70dBm and 98dBm were achieved with NF of 40dB and 11dB at the data rate of 100kb/s while consuming only 600μW and 1.5mW at 1.2V and 1.8V, respectively. The BERs are less than 10 -3 at the input powers of -70dBm at 1.2V and -98dBm at 1.8V at the data rate of 100kb/s. Finally, the output power of the transmitter is 0dBm for a power consumption of 1.8mW.

Original languageEnglish (US)
Title of host publication2011 IEEE Biomedical Circuits and Systems Conference, BioCAS 2011
Pages157-160
Number of pages4
DOIs
StatePublished - Dec 1 2011
Event2011 IEEE Biomedical Circuits and Systems Conference, BioCAS 2011 - San Diego, CA, United States
Duration: Nov 10 2011Nov 12 2011

Publication series

Name2011 IEEE Biomedical Circuits and Systems Conference, BioCAS 2011

Other

Other2011 IEEE Biomedical Circuits and Systems Conference, BioCAS 2011
CountryUnited States
CitySan Diego, CA
Period11/10/1111/12/11

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ASJC Scopus subject areas

  • Hardware and Architecture
  • Biomedical Engineering
  • Electrical and Electronic Engineering

Cite this

Kim, S., Lepkowski, W., Wilk, S. J., Thornton, T., & Bakkaloglu, B. (2011). A low-power CMOS BFSK transceiver for health monitoring systems. In 2011 IEEE Biomedical Circuits and Systems Conference, BioCAS 2011 (pp. 157-160). [6107751] (2011 IEEE Biomedical Circuits and Systems Conference, BioCAS 2011). https://doi.org/10.1109/BioCAS.2011.6107751