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Author Kiseok Song ♦ Joonsung Bae ♦ Long Yan ♦ Hoi-Jun Yoo
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2011
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics ♦ Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Electrodes ♦ Impedance ♦ Transceivers ♦ Receivers ♦ Capacitive sensors ♦ Electronics packaging ♦ Power demand
Abstract A low power contact impedance sensor (CIS) is presented for an energy efficient wireless body-area-network (WBAN) transceiver using a human body as a transmission medium. The proposed CIS adopts the capacitive sensing technique based on the LC resonance for detecting the parasitic capacitance between the electrodes and the human body to automatically turn on or off the transceiver. The 3'b resistive sensor, combined with a reconfigurable output driver in the transmitter, is proposed to compensate the channel quality degradation due to the contact impedance variation. It can reduce both the linearity and sensitivity requirements of the receiver front-end by 7 dB. It leads to significantly reduce the power of the LNA more than 70 % (from 2.0 mW to 0.6 mW). The proposed CIS of 1.0 mm · 1.4 mm is fabricated in 0.18 µm CMOS technology, and dissipates only 20 µW from 1.0 V.
Description Author affiliation: Department of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea (Kiseok Song; Joonsung Bae; Long Yan; Hoi-Jun Yoo)
ISBN 9781457702228
ISSN 08865930
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2011-09-19
Publisher Place USA
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
e-ISBN 9781457702235
Size (in Bytes) 1.22 MB
Page Count 4
Starting Page 1
Ending Page 4


Source: IEEE Xplore Digital Library