A Low Power Interference Robust IR-UWB Transceiver SoC for WBAN Applications - Ultra-Wideband and 60 GHz Communications for Biomedical Applications - page 23

A Low Power Interference Robust IR-UWB
Transceiver SoC for WBAN Applications

Yuan Gao, Xin Liu, Yuanjin Zheng, Shengxi Diao, Weida Toh, Yisheng Wang,
Bin Zhao, Minkyu Je and Chun-Huat Heng

Abstract An integrated 3-5 GHz impulse radio ultra-wideband (IR-UWB)
transceiver system on chip (SoC) for wireless body area network (WBAN) appli-
cations is presented. To enhance system robustness against narrow band interference
(NBI) signals, receiver low noise amplifier (LNA) input matching network is opti-
mized to reject out-band NBI. A noncoherent energy detection scheme using analog
squarer with band-pass filtering is utilized to increase the rejection to both in-
band/out-band NBI. A low-power pulse synchronization algorithm is implemented
in the digital baseband. The proposed transceiver achieves energy efficiency of 0.3
and 4.3 nJ/bit for TX and RX respectively and a receiver sensitivity of

− 92 dBm

10 − 3 ) for UWB on-off keying (OOK) signal at 1 Mb/s pulse rate. The
measured maximum in-band/out-band SIR for BER

=

(BER

=

10 − 3

− −

is 33 and 47 dB,

respectively.

·

Keywords Impulse radio ultra-wideband (IRUWB) Wireless body area network

(WBAN) · Transceiver · System on chip (SoC) · Medical monitoring

Introduction

Wireless body area network (WBAN) technology is developing rapidly in recent
years as it provides a platform to support various sensors deployment around hu-
man body for emerging healthcare applications [ 1 , 2 ]. Figure 1 illustrates a typical
application scenario of WBAN technology in personal healthcare. Different physio-
logical signals such as electrocardiogram (ECG), respiration rate, body temperature,

Y. Gao ( ) M. Je

Institute of Microelectronics, A*STAR, Singapore, Rep. of Singapore
e-mail: [e-mail]
Y. Zheng

· X. Liu · S. Diao · W. To h · B. Zhao ·

Y. Wang
School of Electrical and Electronic Engineering,
Nanyang Technological University, Singapore, Rep. of Singapore
C.-H. Heng
Department of Electrical and Computer Engineering,
National University of Singapore, Singapore, Rep. of Singapore

·