Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/1626

TitleWireless hydrotherapy smart suit for monitoring handicapped people
Author(s)Correia, J. H.
Mendes, P. M.
KeywordsChip-size antenna
Smart textiles
E-textiles
RF CMOS transceiver
Issue date2005
PublisherSociety of Photo-optical Instrumentation Engineers (SPIE)
JournalProceedings of the Society of Photo-optical Instrumentation Engineers (SPIE)
Abstract(s)This paper presents a smart suit, water impermeable, containing sensors and electronics for monitoring handicapped people at hydrotherapy sessions in swimming-pools. For integration into textiles, electronic components should be designed in a functional, robust and inexpensive way. Therefore, small-size electronics microsystems are a promising approach. The smart suit allows the monitoring of individual biometric data, such as heart rate, temperature and movement of the body. Two solutions for transmitting the data wirelessly are presented: through a low-voltage (3.0 V), low-power, CMOS RF IC (1.6 mm x 1.5 mm size dimensions) operating at 433 MHz, with ASK modulation and a patch antenna built on lossy substrates compatible with integrated circuits fabrication. Two different substrates were used for antenna implementation: high-resistivity silicon (HRS) and Corning Pyrex #7740 glass. The antenna prototypes were built to operate close to the 5 GHz ISM band. They operate at a center frequency of 5.705 GHz (HRS) and 5.995 GHz (Pyrex). The studied parameters were: substrate thickness, substrate losses, oxide thickness, metal conductivity and thickness. The antenna on HRS uses an area of 8 mm2, providing a 90 MHz bandwidth and ~0.3 dBi of gain. On a glass substrate, the antenna uses 12 mm2, provides 100 MHz bandwidth and ~3 dBi of gain.
TypeConference paper
URIhttp://hdl.handle.net/1822/1626
ISBN0819456098
DOI10.1117/12.581412
ISSN0277-786X
Peer-Reviewedyes
AccessOpen access
Appears in Collections:DEI - Artigos em atas de congressos internacionais

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