A Novel Ring Shaped Photodiode for Reflectance Pulse Oximetry in Wireless Applications

Sune Duun; Rasmus Grønbek Haahr; Karen Birkelund; P. Raahauge; P. Petersen; H Dam; L. Noergaard; Erik Vilain Thomsen

doi:10.1109/ICSENS.2007.4388469

A Novel Ring Shaped Photodiode for Reflectance Pulse Oximetry in Wireless Applications

Sune Duun, Rasmus Grønbek Haahr, Karen Birkelund, P. Raahauge, P. Petersen, H Dam, L. Noergaard, Erik Vilain Thomsen

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Abstract

We present a pulse oximeter for use in home-care applications in a sticking patch with integrated electronics. The core in the pulse oximeter is a large ring shaped backside silicon pn photodiode placed around a Ledtronics dual LED with wavelengths of 660 nm and 940 nm. The concentric photodiode gives optimal gathering of light and thereby enabling lower LED drive currents and lower power consumption. To further optimize the photodiode a two layer SiO2/SiN interference filter is employed yielding 98% transmission at the wavelengths of the LED and damping of other wavelengths. The presented photodiode has an inner-outer radius of 3.29 -4.07 mm and an area of 18 mm2 , however, photodiodes with ring center radii ranging from 2.8 -4.9 mm have been fabricated. Using the pulse oxymetry sensor photoplethysmograms clearly showing the cardiovascular cycle are recorded. An on-chip integrated Au thermistor for surface body temperature measurements is found to have a repeatability of plusmn0.26degC.

Original language	English
Title of host publication	Proceeedings of the 6th IEEE Conference on Sensors
Publisher	IEEE
Publication date	2007
Pages	596-599
ISBN (Print)	978-1-4244-1262-4
DOIs	https://doi.org/10.1109/ICSENS.2007.4388469
Publication status	Published - 2007
Event	IEEE Sensors 2007 - Atlanta, United States Duration: 28 Oct 2007 → 31 Oct 2007 Conference number: 6 https://ieeexplore.ieee.org/xpl/conhome/4388307/proceeding http://ewh.ieee.org/conf/sensors2007/

Conference

Conference	IEEE Sensors 2007
Number	6
Country/Territory	United States
City	Atlanta
Period	28/10/2007 → 31/10/2007
Internet address	https://ieeexplore.ieee.org/xpl/conhome/4388307/proceeding http://ewh.ieee.org/conf/sensors2007/

Bibliographical note

Copyright: 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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@inproceedings{313a571fc96040f4a4de0671f2ef87e9,

title = "A Novel Ring Shaped Photodiode for Reflectance Pulse Oximetry in Wireless Applications",

abstract = "We present a pulse oximeter for use in home-care applications in a sticking patch with integrated electronics. The core in the pulse oximeter is a large ring shaped backside silicon pn photodiode placed around a Ledtronics dual LED with wavelengths of 660 nm and 940 nm. The concentric photodiode gives optimal gathering of light and thereby enabling lower LED drive currents and lower power consumption. To further optimize the photodiode a two layer SiO2/SiN interference filter is employed yielding 98% transmission at the wavelengths of the LED and damping of other wavelengths. The presented photodiode has an inner-outer radius of 3.29 -4.07 mm and an area of 18 mm2 , however, photodiodes with ring center radii ranging from 2.8 -4.9 mm have been fabricated. Using the pulse oxymetry sensor photoplethysmograms clearly showing the cardiovascular cycle are recorded. An on-chip integrated Au thermistor for surface body temperature measurements is found to have a repeatability of plusmn0.26degC.",

author = "Sune Duun and Haahr, {Rasmus Gr{\o}nbek} and Karen Birkelund and P. Raahauge and P. Petersen and H Dam and L. Noergaard and Thomsen, {Erik Vilain}",

note = "Copyright: 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE; IEEE Sensors 2007, IEEE Sensors 2007 ; Conference date: 28-10-2007 Through 31-10-2007",

year = "2007",

doi = "10.1109/ICSENS.2007.4388469",

language = "English",

isbn = "978-1-4244-1262-4",

pages = "596--599",

booktitle = "Proceeedings of the 6th IEEE Conference on Sensors",

publisher = "IEEE",

address = "United States",

url = "https://ieeexplore.ieee.org/xpl/conhome/4388307/proceeding, http://ewh.ieee.org/conf/sensors2007/",

}

Duun, S, Haahr, RG, Birkelund, K, Raahauge, P, Petersen, P, Dam, H, Noergaard, L & Thomsen, EV 2007, A Novel Ring Shaped Photodiode for Reflectance Pulse Oximetry in Wireless Applications. in Proceeedings of the 6th IEEE Conference on Sensors. IEEE, pp. 596-599, IEEE Sensors 2007, Atlanta, Georgia, United States, 28/10/2007. https://doi.org/10.1109/ICSENS.2007.4388469

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T1 - A Novel Ring Shaped Photodiode for Reflectance Pulse Oximetry in Wireless Applications

AU - Duun, Sune

AU - Haahr, Rasmus Grønbek

AU - Birkelund, Karen

AU - Raahauge, P.

AU - Petersen, P.

AU - Dam, H

AU - Noergaard, L.

AU - Thomsen, Erik Vilain

N1 - Conference code: 6

PY - 2007

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N2 - We present a pulse oximeter for use in home-care applications in a sticking patch with integrated electronics. The core in the pulse oximeter is a large ring shaped backside silicon pn photodiode placed around a Ledtronics dual LED with wavelengths of 660 nm and 940 nm. The concentric photodiode gives optimal gathering of light and thereby enabling lower LED drive currents and lower power consumption. To further optimize the photodiode a two layer SiO2/SiN interference filter is employed yielding 98% transmission at the wavelengths of the LED and damping of other wavelengths. The presented photodiode has an inner-outer radius of 3.29 -4.07 mm and an area of 18 mm2 , however, photodiodes with ring center radii ranging from 2.8 -4.9 mm have been fabricated. Using the pulse oxymetry sensor photoplethysmograms clearly showing the cardiovascular cycle are recorded. An on-chip integrated Au thermistor for surface body temperature measurements is found to have a repeatability of plusmn0.26degC.

AB - We present a pulse oximeter for use in home-care applications in a sticking patch with integrated electronics. The core in the pulse oximeter is a large ring shaped backside silicon pn photodiode placed around a Ledtronics dual LED with wavelengths of 660 nm and 940 nm. The concentric photodiode gives optimal gathering of light and thereby enabling lower LED drive currents and lower power consumption. To further optimize the photodiode a two layer SiO2/SiN interference filter is employed yielding 98% transmission at the wavelengths of the LED and damping of other wavelengths. The presented photodiode has an inner-outer radius of 3.29 -4.07 mm and an area of 18 mm2 , however, photodiodes with ring center radii ranging from 2.8 -4.9 mm have been fabricated. Using the pulse oxymetry sensor photoplethysmograms clearly showing the cardiovascular cycle are recorded. An on-chip integrated Au thermistor for surface body temperature measurements is found to have a repeatability of plusmn0.26degC.

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DO - 10.1109/ICSENS.2007.4388469

M3 - Article in proceedings

SN - 978-1-4244-1262-4

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EP - 599

BT - Proceeedings of the 6th IEEE Conference on Sensors

PB - IEEE

T2 - IEEE Sensors 2007

Y2 - 28 October 2007 through 31 October 2007

ER -

A Novel Ring Shaped Photodiode for Reflectance Pulse Oximetry in Wireless Applications

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