A 2.4 GHz ULP OOK Single-Chip Transceiver for Healthcare Applications

M Vidojkovic; X Huang; P Harpe; S Rampu; C Zhou; L Huang; J van de Molengraft; K Imamura; B Busze; F Bouwens; M Konijnenburg; J Santana; A Breeschoten; J Huisken; K Philips; G Dolmans; H de Groot

doi:10.1109/TBCAS.2011.2173340

A 2.4 GHz ULP OOK Single-Chip Transceiver for Healthcare Applications

IEEE Trans Biomed Circuits Syst. 2011 Dec;5(6):523-34. doi: 10.1109/TBCAS.2011.2173340.

Authors

M Vidojkovic, X Huang, P Harpe, S Rampu, C Zhou, L Huang, J van de Molengraft, K Imamura, B Busze, F Bouwens, M Konijnenburg, J Santana, A Breeschoten, J Huisken, K Philips, G Dolmans, H de Groot

PMID: 23852550
DOI: 10.1109/TBCAS.2011.2173340

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.