Wireless Circuits and Systems: FM Telemetry Devices

Research output: Chapter in Book/Report/Conference proceedingChapter


This chapter presents frequency modulated (FM) telemetry devices for wireless circuits and systems. A low-power implantable monitoring system in Med-Radio band is introduced and includes a sampling amplifier, and a Gm-C filter, a voltage control oscillator with temperature compensation and bandgap reference (BGR). The chip is designed based on a standard TSMC 0.18-µm CMOS process. The power consumption of the sampling amplifier and Gm-C filter is 10.7 µW and 300 µW, respectively. The cutoff frequency of the filter is 4 MHz. The output frequency of VCO with temperature compensation ranges from 401 MHz to 406 MHz, and the temperature variation coefficient is only 10 ppm/oC. The VCO power consumption is 661 µW. The output voltage of the bandgap reference circuit is 1 V, and the voltage variation coefficient is 0.52%/V. The temperature variation coefficient is 2 ppm/oC, and the power consumption is 131.6 µW. In the temperature measurements, the maximal error is 0.057° with the standard deviation of ±0.034°.

Original languageEnglish
Title of host publicationHandbook of Biochips
Subtitle of host publicationIntegrated Circuits and Systems for Biology and Medicine
PublisherSpringer New York
Number of pages23
ISBN (Electronic)9781461434474
ISBN (Print)9781441993182
Publication statusPublished - 2022 Jan 1

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Computer Science(all)


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