Title :
A 2.4 GHz ULP OOK Single-Chip Transceiver for Healthcare Applications
Author :
Vidojkovic, M. ; Huang, X. ; Harpe, P. ; Rampu, S. ; Zhou, C. ; Huang, L. ; van de Molengraft, J. ; Imamura, K. ; Busze, Benjamin ; Bouwens, F. ; Konijnenburg, M. ; Santana, J. ; Breeschoten, A. ; Huisken, J. ; Philips, K. ; Dolmans, G. ; de Groot, H.
Author_Institution :
Holst Centre/imec-NL, Eindhoven, Netherlands
Abstract :
This paper describes an ultra-low power (ULP) single chip transceiver for wireless body area network (WBAN) applications. It supports on-off keying (OOK) modulation, and it operates in the 2.36-2.4 GHz medical BAN and 2.4-2.485 GHz ISM bands. It is implemented in 90 nm CMOS technology. The direct modulated transmitter transmits OOK signal with 0 dBm peak power, and it consumes 2.59 mW with 50% OOK. The transmitter front-end supports up to 10 Mbps. The transmitter digital baseband enables digital pulse-shaping to improve spectrum efficiency. The super-regenerative receiver front-end supports up to 5 Mbps with -75 dBm sensitivity. Including the digital part, the receiver consumes 715 μW at 1 Mbps data rate, oversampled at 3 MHz. At the system level the transceiver achieves PER=10 -2 at 25 meters line of site with 62.5 kbps data rate and 288 bits packet size. The transceiver is integrated in an electrocardiogram (ECG) necklace to monitor the heart´s electrical property.
Keywords :
amplitude shift keying; bioelectric potentials; biomedical electronics; body area networks; electrocardiography; health care; patient monitoring; pulse shaping; transceivers; wireless sensor networks; CMOS technology; ECG necklace; ULP OOK single chip transceiver; WBAN application; digital pulse shaping; direct modulated transmitter; electrocardiogram; frequency 2.4 GHz; healthcare application; on-off keying modulation; size 90 nm; super regenerative receiver front end; transmitter digital baseband; ultra low power single chip transceiver; wireless body area network; Body area networks; CMOS technology; Low power electronics; Transceivers; Wireless communication; Healthcare applications; super-regenerative receiver; ultra-low power transceivers; wireless body area network (WBAN);
Journal_Title :
Biomedical Circuits and Systems, IEEE Transactions on
DOI :
10.1109/TBCAS.2011.2173340
