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1. A WIRELESS ELECTROCARDIOGRAM DETECTION FOR
PERSONAL HEALTH MONITORING
ABSTRACT:
The current paper presents low-power analog integrated circuits (ICs) for wireless
electrocardiogram (ECG) detection in personal health monitoring. Considering the power-
efficient communication in the body sensor network (BSN), the required low-power analog
ICs are developed for a healthcare system through miniaturization and system integration.
The proposed system comprises the design and implementation with three subsystems,
namely, (1) the ECG acquisition node, (2) the protocol for standard IEEE 802.15.4 ZigBee
system, and (3) the radio frequency (RF) transmitter circuits. A preamplifier, a low-pass
filter, and a successive-approximation analog-to-digital converter (SA-ADC) are integrated to
detect an ECG signal. For high integration, the ZigBee protocol is adopted for wireless
communication. To transmit the ECG signal through wireless communication, a quadrature
voltage-controlled oscillator and a 2.4 GHz low-IF transmitter with a power amplifier and up-
conversion mixer are also developed. In the receiver, a 2.4 GHz fully integrated CMOS
radio-frequency front-end with a low-noise amplifier, and a quadrature mixer is proposed.
The low-power wireless bio-signal acquisition SoC (WBSA-SoC) has been implemented in
TSMC 0.18-μm standard CMOS process. The measurement results on the human body reveal
that the ECG signals can be acquired effectively by the proposed SoC