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Passive monitoring using a combination of focused and phased array radiometry: A simulation study

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dc.contributor.author Farantatos, P en
dc.contributor.author Karanasiou, IS en
dc.contributor.author Uzunoglu, N en
dc.date.accessioned 2014-03-01T02:47:26Z
dc.date.available 2014-03-01T02:47:26Z
dc.date.issued 2011 en
dc.identifier.issn 1557170X en
dc.identifier.uri http://hdl.handle.net/123456789/33150
dc.subject.other Antenna configurations en
dc.subject.other Brain areas en
dc.subject.other Conductive walls en
dc.subject.other Conductivity variation en
dc.subject.other Contact less en
dc.subject.other Electric field distributions en
dc.subject.other Element antenna en
dc.subject.other Extensive simulations en
dc.subject.other Focusing properties en
dc.subject.other Head model en
dc.subject.other Hot spot en
dc.subject.other Human head model en
dc.subject.other Main module en
dc.subject.other Micro-strip patch antennas en
dc.subject.other Microwave radiometry en
dc.subject.other Multiband en
dc.subject.other Non-invasive en
dc.subject.other Passive monitoring en
dc.subject.other Phase difference en
dc.subject.other Phased array antennas en
dc.subject.other Scanning properties en
dc.subject.other Simulation studies en
dc.subject.other Brain en
dc.subject.other Computer simulation en
dc.subject.other Electric fields en
dc.subject.other Focusing en
dc.subject.other Hyperthermia therapy en
dc.subject.other Microstrip antennas en
dc.subject.other Microwave antennas en
dc.subject.other Microwave devices en
dc.subject.other Monitoring en
dc.subject.other Radiometers en
dc.subject.other Radiometry en
dc.subject.other Receiving antennas en
dc.subject.other Reflection en
dc.subject.other Scanning en
dc.subject.other Antenna phased arrays en
dc.title Passive monitoring using a combination of focused and phased array radiometry: A simulation study en
heal.type conferenceItem en
heal.identifier.primary 10.1109/IEMBS.2011.6090090 en
heal.identifier.secondary http://dx.doi.org/10.1109/IEMBS.2011.6090090 en
heal.identifier.secondary 6090090 en
heal.publicationDate 2011 en
heal.abstract Aim of this simulation study is to use the focusing properties of a conductive ellipsoidal reflector in conjunction with directive phased microwave antenna configurations in order to achieve brain passive monitoring with microwave radiometry. One of the main modules of the proposed setup which ensures the necessary beamforming and focusing on the body and brain areas of interest is a symmetrical axis ellipsoidal conductive wall cavity. The proposed system operates in an entirely non-invasive contactless manner providing temperature and/or conductivity variations monitoring and is designed to also provide hyperthermia treatment. In the present paper, the effect of the use of patch antennas as receiving antennas on the system's focusing properties and specifically the use of phased array setups to achieve scanning of the areas under measurement is investigated. Extensive simulations to compute the electric field distributions inside the whole ellipsoidal reflector and inside two types of human head models were carried out using single and two element microstrip patch antennas. The results show that clear focusing (creation of hot spots) inside the head models is achieved at 1.53GHz. In the case of the two element antennas, the hot spot performs a linear scan around the brain area of interest while the phase difference of the two microstrip patch antennas significantly affects the way the scanning inside the head model is achieved. In the near future, phased array antennas with multiband and more elements will be used in order to enhance the system scanning properties toward the acquisition of tomography images without the need of subject movement. © 2011 IEEE. en
heal.journalName Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS en
dc.identifier.doi 10.1109/IEMBS.2011.6090090 en
dc.identifier.volume 2011 en
dc.identifier.spage 501 en
dc.identifier.epage 504 en


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