Polarization and human body effects on the microwave absorption in a human head exposed to radiation from handheld devices
A multigrid finite-difference time-domain code was used to calculate specific absorption rate (SAR) distribution in a human head exposed to microwave radiation from handheld antennas. The effect of the human body was taken into account and different antennas and polarization conditions were consider...
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Veröffentlicht in: | IEEE transactions on microwave theory and techniques 2000-11, Vol.48 (11), p.1979-1987 |
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container_end_page | 1987 |
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container_issue | 11 |
container_start_page | 1979 |
container_title | IEEE transactions on microwave theory and techniques |
container_volume | 48 |
creator | Iskander, M.E. Zhengqing Yun Quintero-Illera, R. |
description | A multigrid finite-difference time-domain code was used to calculate specific absorption rate (SAR) distribution in a human head exposed to microwave radiation from handheld antennas. The effect of the human body was taken into account and different antennas and polarization conditions were considered, The distance between the antenna and human head were varied to examine the effect of the human body on the SAR distribution, From the numerical results, it is shown that the human body plays a significant role on the SAR value and its distribution in the head [as high as 53% monopole, 41% planar inverted F antenna (PIFA)]. It is also shown that the effect of the body is more dominant at lower frequencies (monopole 900 MHz versus 1.9 GHz). For the monopole case, effect of body is particularly important at larger separation distances from the head, e.g., at d=4 cm versus d=0.5 cm. Effect of body is particularly important for the vertical orientation cases for both the monopole and PIFA. |
doi_str_mv | 10.1109/22.884186 |
format | Article |
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The effect of the human body was taken into account and different antennas and polarization conditions were considered, The distance between the antenna and human head were varied to examine the effect of the human body on the SAR distribution, From the numerical results, it is shown that the human body plays a significant role on the SAR value and its distribution in the head [as high as 53% monopole, 41% planar inverted F antenna (PIFA)]. It is also shown that the effect of the body is more dominant at lower frequencies (monopole 900 MHz versus 1.9 GHz). For the monopole case, effect of body is particularly important at larger separation distances from the head, e.g., at d=4 cm versus d=0.5 cm. Effect of body is particularly important for the vertical orientation cases for both the monopole and PIFA.</description><identifier>ISSN: 0018-9480</identifier><identifier>EISSN: 1557-9670</identifier><identifier>DOI: 10.1109/22.884186</identifier><identifier>CODEN: IETMAB</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Antennas ; Electromagnetic wave absorption ; Finite difference methods ; Frequency ; Handheld computers ; Human ; Human body ; Humans ; Mathematical analysis ; Microwave antennas ; Microwave devices ; Microwaves ; Monopoles ; Polarization ; Specific absorption rate ; Studies ; Synthetic aperture radar ; Time domain analysis</subject><ispartof>IEEE transactions on microwave theory and techniques, 2000-11, Vol.48 (11), p.1979-1987</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2000</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c429t-5eb7001e9da9a2fe4fce74aa7af83468b47e1477e28775da0e6f95eb70b87a633</citedby><cites>FETCH-LOGICAL-c429t-5eb7001e9da9a2fe4fce74aa7af83468b47e1477e28775da0e6f95eb70b87a633</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/884186$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,27903,27904,54736</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/884186$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Iskander, M.E.</creatorcontrib><creatorcontrib>Zhengqing Yun</creatorcontrib><creatorcontrib>Quintero-Illera, R.</creatorcontrib><title>Polarization and human body effects on the microwave absorption in a human head exposed to radiation from handheld devices</title><title>IEEE transactions on microwave theory and techniques</title><addtitle>TMTT</addtitle><description>A multigrid finite-difference time-domain code was used to calculate specific absorption rate (SAR) distribution in a human head exposed to microwave radiation from handheld antennas. The effect of the human body was taken into account and different antennas and polarization conditions were considered, The distance between the antenna and human head were varied to examine the effect of the human body on the SAR distribution, From the numerical results, it is shown that the human body plays a significant role on the SAR value and its distribution in the head [as high as 53% monopole, 41% planar inverted F antenna (PIFA)]. It is also shown that the effect of the body is more dominant at lower frequencies (monopole 900 MHz versus 1.9 GHz). For the monopole case, effect of body is particularly important at larger separation distances from the head, e.g., at d=4 cm versus d=0.5 cm. Effect of body is particularly important for the vertical orientation cases for both the monopole and PIFA.</description><subject>Antennas</subject><subject>Electromagnetic wave absorption</subject><subject>Finite difference methods</subject><subject>Frequency</subject><subject>Handheld computers</subject><subject>Human</subject><subject>Human body</subject><subject>Humans</subject><subject>Mathematical analysis</subject><subject>Microwave antennas</subject><subject>Microwave devices</subject><subject>Microwaves</subject><subject>Monopoles</subject><subject>Polarization</subject><subject>Specific absorption rate</subject><subject>Studies</subject><subject>Synthetic aperture radar</subject><subject>Time domain analysis</subject><issn>0018-9480</issn><issn>1557-9670</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNqNks1v1DAQxS0EEsvCgSsniwOohxTb8ecRVVCQKrWHco4myVhxlcSLnW1p__q6zYoDB7Qny5rfe54ZP0Lec3bKOXNfhDi1VnKrX5ANV8pUThv2kmwY47Zy0rLX5E3ON-UqFbMb8nAVR0jhAZYQZwpzT4f9BDNtY39P0XvslkxLZRmQTqFL8Q5ukUKbY9o9S0JRHTQDQk_xzy5m7OkSaYI-rL4-xYkOxX3Asac93oYO81vyysOY8d3h3JJf379dn_2oLi7Pf559vag6KdxSKWxNaRddDw6ER-k7NBLAgLe11LaVBrk0BoU1RvXAUHv3LGqtAV3XW_J59d2l-HuPeWmmkDscR5gx7nPjuNR1eUIW8tN_SWGds1zoI0BVS6OOcDRaOSaOAqVh1hXw4z_gTdynuSywsVZxrZ-m2ZKTFSoflnNC3-xSmCDdN5w1TzlphGjWnBT2w8oGRPzLHYqPaUa4LQ</recordid><startdate>20001101</startdate><enddate>20001101</enddate><creator>Iskander, M.E.</creator><creator>Zhengqing Yun</creator><creator>Quintero-Illera, R.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope><scope>H8D</scope><scope>F28</scope><scope>FR3</scope></search><sort><creationdate>20001101</creationdate><title>Polarization and human body effects on the microwave absorption in a human head exposed to radiation from handheld devices</title><author>Iskander, M.E. ; Zhengqing Yun ; Quintero-Illera, R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c429t-5eb7001e9da9a2fe4fce74aa7af83468b47e1477e28775da0e6f95eb70b87a633</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Antennas</topic><topic>Electromagnetic wave absorption</topic><topic>Finite difference methods</topic><topic>Frequency</topic><topic>Handheld computers</topic><topic>Human</topic><topic>Human body</topic><topic>Humans</topic><topic>Mathematical analysis</topic><topic>Microwave antennas</topic><topic>Microwave devices</topic><topic>Microwaves</topic><topic>Monopoles</topic><topic>Polarization</topic><topic>Specific absorption rate</topic><topic>Studies</topic><topic>Synthetic aperture radar</topic><topic>Time domain analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Iskander, M.E.</creatorcontrib><creatorcontrib>Zhengqing Yun</creatorcontrib><creatorcontrib>Quintero-Illera, R.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Aerospace Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><jtitle>IEEE transactions on microwave theory and techniques</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Iskander, M.E.</au><au>Zhengqing Yun</au><au>Quintero-Illera, R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Polarization and human body effects on the microwave absorption in a human head exposed to radiation from handheld devices</atitle><jtitle>IEEE transactions on microwave theory and techniques</jtitle><stitle>TMTT</stitle><date>2000-11-01</date><risdate>2000</risdate><volume>48</volume><issue>11</issue><spage>1979</spage><epage>1987</epage><pages>1979-1987</pages><issn>0018-9480</issn><eissn>1557-9670</eissn><coden>IETMAB</coden><abstract>A multigrid finite-difference time-domain code was used to calculate specific absorption rate (SAR) distribution in a human head exposed to microwave radiation from handheld antennas. The effect of the human body was taken into account and different antennas and polarization conditions were considered, The distance between the antenna and human head were varied to examine the effect of the human body on the SAR distribution, From the numerical results, it is shown that the human body plays a significant role on the SAR value and its distribution in the head [as high as 53% monopole, 41% planar inverted F antenna (PIFA)]. It is also shown that the effect of the body is more dominant at lower frequencies (monopole 900 MHz versus 1.9 GHz). For the monopole case, effect of body is particularly important at larger separation distances from the head, e.g., at d=4 cm versus d=0.5 cm. Effect of body is particularly important for the vertical orientation cases for both the monopole and PIFA.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/22.884186</doi><tpages>9</tpages></addata></record> |
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source | IEEE Electronic Library (IEL) |
subjects | Antennas Electromagnetic wave absorption Finite difference methods Frequency Handheld computers Human Human body Humans Mathematical analysis Microwave antennas Microwave devices Microwaves Monopoles Polarization Specific absorption rate Studies Synthetic aperture radar Time domain analysis |
title | Polarization and human body effects on the microwave absorption in a human head exposed to radiation from handheld devices |
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