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Related Experiment Video

Updated: May 9, 2026

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

Published on: May 2, 2018

A 2.4-GHz BAW-Based Transceiver for Wireless Body Area Networks.

M Contaldo, B Banerjee, D Ruffieux

IEEE Transactions on Biomedical Circuits and Systems

|July 16, 2013

Summary

This summary is machine-generated.

This study introduces a Bulk Acoustic Wave (BAW)-based transceiver for biomedical wireless networks, achieving low power and high performance. The system demonstrates efficient phase quantization and meets Bluetooth spectrum requirements, though receiver sensitivity needs further investigation.

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Area of Science:

Electrical Engineering
Biomedical Engineering
Materials Science

Background:

Wireless transceivers are crucial for biomedical applications, demanding low power and high performance.
Microelectromechanical-systems (MEMS) resonators offer advantages in frequency synthesis, receiver, and transmitter design.
Existing wireless solutions may face limitations in power consumption, phase noise, and selectivity for sensitive biomedical data transmission.

Purpose of the Study:

To present a Bulk Acoustic Wave (BAW)-based transceiver for wireless biomedical networks.
To leverage high-Q MEMS resonators for improved transceiver performance, including low power consumption and enhanced phase noise.
To validate the performance of a complete wireless node integrating the transceiver and a microprocessor in a standard CMOS technology.

Main Methods:

Utilized high-Q microelectromechanical-systems (MEMS) resonators for frequency synthesis, receiver, and transmitter.
Implemented a phase analog-to-digital converter (ADC) for minimized baseband power consumption.
Integrated the transceiver and a microprocessing integrated circuit (IC) using a 0.18-μm complementary metal-oxide semiconductor (CMOS) technology.

Main Results:

Achieved RF carrier phase noise of -136.2 dBc/Hz at a 1-MHz offset.
Demonstrated 1-Mb/s Gaussian frequency-shift keying (GFSK) modulation with 5.4 dBm output power and 35 mA current consumption.
The transmitter complies with Bluetooth and Bluetooth low energy output spectrum requirements.

Conclusions:

The BAW-based transceiver offers a promising solution for low-power, high-performance wireless biomedical applications.
The integrated wireless node validates the feasibility of the proposed design in standard CMOS technology.
Further research is required to address the unexpected receiver sensitivity of -75 dBm at 200 kb/s.