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Characterization of the electromagnetic environment in a hospital


Lauer, O; Riederer, M; Karoui, N; Vahldieck, R; Keller, E; Fröhlich, J (2008). Characterization of the electromagnetic environment in a hospital. In: Proceedings Asia-Pacific Symposium on Electromagnetic Compatibility and 19th International Zürich Symposium on Electromagnetic Compatibility APEMC, Zurich, Switzerland, 19 May 2008 - 23 May 2008.

Abstract

The electromagnetic environment in a hospital is
characterized in order to evaluate the conditions for failsafe operation of critical electronic equipment. Field strengths within the University Hospital Z¨urich were measured at more than 60 different locations in the frequency range from 9 kHz up to 10 GHz. To account for variations in both, time and location, ’stationary short term’ and ’stationary long term’ measurements over 24 h were carried out. The measurement uncertainty of the
measurement equipment, calibration and measurement procedure is assessed. Measurement results are evaluated with respect to given immunity levels (EMC) and in-band interferences (EMI). The ISM band features a noise power density of -32 dBm/MHz while for Ultra Wide Band (UWB) there are different sub-bands with a maximum noise power density of less than -81 dBm/MHz. This suggests that communication in the UWB band requires significantly lower power levels than communication in the ISM band for equal dynamic ranges of the radio links.

The electromagnetic environment in a hospital is
characterized in order to evaluate the conditions for failsafe operation of critical electronic equipment. Field strengths within the University Hospital Z¨urich were measured at more than 60 different locations in the frequency range from 9 kHz up to 10 GHz. To account for variations in both, time and location, ’stationary short term’ and ’stationary long term’ measurements over 24 h were carried out. The measurement uncertainty of the
measurement equipment, calibration and measurement procedure is assessed. Measurement results are evaluated with respect to given immunity levels (EMC) and in-band interferences (EMI). The ISM band features a noise power density of -32 dBm/MHz while for Ultra Wide Band (UWB) there are different sub-bands with a maximum noise power density of less than -81 dBm/MHz. This suggests that communication in the UWB band requires significantly lower power levels than communication in the ISM band for equal dynamic ranges of the radio links.

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3 citations in Web of Science®
13 citations in Scopus®
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Additional indexing

Item Type:Conference or Workshop Item (Lecture), not refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Neurosurgery
Dewey Decimal Classification:610 Medicine & health
Language:English
Event End Date:23 May 2008
Deposited On:05 Jan 2009 10:42
Last Modified:14 Aug 2016 06:18
Publisher DOI:10.1109/APEMC.2008.4559915
Permanent URL: http://doi.org/10.5167/uzh-7996

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