Authors:
Jue Shen
1
;
Jia Mao
1
;
Geng Yang
1
;
Li Xie
1
;
Yi Feng
1
;
Majid Nejad
2
;
Zhuo Zou
1
;
Hannu Tenhunen
1
and
Li-Rong Zheng
3
Affiliations:
1
KTH-Royal Institute of Technology, Sweden
;
2
Hakim Sabzevari University, Iran, Islamic Republic of
;
3
KTH-Royal Institute of Technology and Fudan University, Sweden
Keyword(s):
Real-Time Remote-Monitoring, Electrocardiogram (ECG), Asymmetric Ultra-Wideband - Radio Frequency Identification (UWB-RFID), Inkjet-Printed Electrodes.
Related
Ontology
Subjects/Areas/Topics:
Biomedical Engineering
;
Biomedical Instruments and Devices
;
Devices
;
Electrocardiography and Heart Monitoring
;
Health Monitoring Devices
;
Human-Computer Interaction
;
Low-Power Design
;
Microelectronics
;
Physiological Computing Systems
;
Wireless Systems
Abstract:
This paper proposes an asymmetric ultra-wideband - radio frequency identification (UWB-RFID) tag with
electrocardiogram (ECG)-sensing capability for patients remote-monitoring in hospital environment. A
UWB-RFID communication protocol is suggested for real-time transmission of undistorted ECG by
interleaving ADC sampling and burst-mode UWB transmission. The proposed system shows a maximum
accessing capability of 400 tags/second at 1.5 KHz ECG sampling rate with 10 Mbps UWB pulse rate. The
tag consists of UHF-RFID receiver, UWB transmitter, ECG analog front-end, multi-input ADC and
baseband circuitry integrated on two silicon dies. It was implemented by 6 mm2
-sized 180 nm CMOS
technology. Electrodes for ECG-sensing are manufactured by inkjet-printing on polyimide substrate.
Experiment results show that the tag transmits UWB pulses at 1 Mbps rate with 18 µW power. The printed
electrodes conduct ECG waveform comparable to commercial electrodes.