Electromagnetic Parameters of Dielectric and Magnetic Mixtures Evaluated by Time-Domain Reflectometry
The frequency-domain analysis of time-domain reflectometry (TDR) data can be used to evaluate the electromagnetic (EM) parameters of a sample under test. The goal of this letter was to use TDR to determine EM parameters, assumed to be frequency independent, for various magnetite/glass-beads mixtures...
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| Veröffentlicht in: | IEEE geoscience and remote sensing letters 2008-10, Vol.5 (4), p.730-734 |
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| creator | Mattei, E. De Santis, A. Di Matteo, A. Pettinelli, E. Vannaroni, G. |
| description | The frequency-domain analysis of time-domain reflectometry (TDR) data can be used to evaluate the electromagnetic (EM) parameters of a sample under test. The goal of this letter was to use TDR to determine EM parameters, assumed to be frequency independent, for various magnetite/glass-beads mixtures. The EM parameters are, in turn, used to determine the velocity and attenuation of propagating waves. The latter quantity is also obtained through the TDR voltage method. Velocities decrease, and attenuations increase with increasing magnetite content. The measurements of the present work are compared with the velocities and attenuations reported in the literature (measured via the network analyzer (NA) and LCR meter techniques). The velocities calculated using the various methods are in good agreement. In contrast, the attenuations determined by fitting the TDR data only agree with the NA measurements at high frequencies (450 MHz), while those obtained by the TDR voltage method match the low-frequency attenuations determined through the LCR meter. The reasons for these behaviors are discussed, and the need for precise handling of the TDR data is emphasized. The TDR fit procedure is recommended to obtain reliable EM parameters of materials. |
| doi_str_mv | 10.1109/LGRS.2008.2004504 |
| format | Article |
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The goal of this letter was to use TDR to determine EM parameters, assumed to be frequency independent, for various magnetite/glass-beads mixtures. The EM parameters are, in turn, used to determine the velocity and attenuation of propagating waves. The latter quantity is also obtained through the TDR voltage method. Velocities decrease, and attenuations increase with increasing magnetite content. The measurements of the present work are compared with the velocities and attenuations reported in the literature (measured via the network analyzer (NA) and LCR meter techniques). The velocities calculated using the various methods are in good agreement. In contrast, the attenuations determined by fitting the TDR data only agree with the NA measurements at high frequencies (450 MHz), while those obtained by the TDR voltage method match the low-frequency attenuations determined through the LCR meter. The reasons for these behaviors are discussed, and the need for precise handling of the TDR data is emphasized. The TDR fit procedure is recommended to obtain reliable EM parameters of materials.</description><identifier>ISSN: 1545-598X</identifier><identifier>EISSN: 1558-0571</identifier><identifier>DOI: 10.1109/LGRS.2008.2004504</identifier><identifier>CODEN: IGRSBY</identifier><language>eng</language><publisher>Piscataway: IEEE</publisher><subject>Attenuation ; Attenuation measurement ; Dielectrics ; Electric potential ; Electromagnetic propagation ; Frequency domain analysis ; Magnetic analysis ; Magnetite ; Measuring instruments ; Meters ; permeability ; permittivity ; Reflectometry ; Testing ; Time domain analysis ; time-domain reflectometry (TDR) ; Velocity measurement ; Voltage ; Wave propagation</subject><ispartof>IEEE geoscience and remote sensing letters, 2008-10, Vol.5 (4), p.730-734</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2008</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c388t-f77a061022c2f5696c4c91bcc7ed080468910cb212d649a952c517dca0ec24993</citedby><cites>FETCH-LOGICAL-c388t-f77a061022c2f5696c4c91bcc7ed080468910cb212d649a952c517dca0ec24993</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/4656441$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/4656441$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Mattei, E.</creatorcontrib><creatorcontrib>De Santis, A.</creatorcontrib><creatorcontrib>Di Matteo, A.</creatorcontrib><creatorcontrib>Pettinelli, E.</creatorcontrib><creatorcontrib>Vannaroni, G.</creatorcontrib><title>Electromagnetic Parameters of Dielectric and Magnetic Mixtures Evaluated by Time-Domain Reflectometry</title><title>IEEE geoscience and remote sensing letters</title><addtitle>LGRS</addtitle><description>The frequency-domain analysis of time-domain reflectometry (TDR) data can be used to evaluate the electromagnetic (EM) parameters of a sample under test. The goal of this letter was to use TDR to determine EM parameters, assumed to be frequency independent, for various magnetite/glass-beads mixtures. The EM parameters are, in turn, used to determine the velocity and attenuation of propagating waves. The latter quantity is also obtained through the TDR voltage method. Velocities decrease, and attenuations increase with increasing magnetite content. The measurements of the present work are compared with the velocities and attenuations reported in the literature (measured via the network analyzer (NA) and LCR meter techniques). The velocities calculated using the various methods are in good agreement. In contrast, the attenuations determined by fitting the TDR data only agree with the NA measurements at high frequencies (450 MHz), while those obtained by the TDR voltage method match the low-frequency attenuations determined through the LCR meter. The reasons for these behaviors are discussed, and the need for precise handling of the TDR data is emphasized. The TDR fit procedure is recommended to obtain reliable EM parameters of materials.</description><subject>Attenuation</subject><subject>Attenuation measurement</subject><subject>Dielectrics</subject><subject>Electric potential</subject><subject>Electromagnetic propagation</subject><subject>Frequency domain analysis</subject><subject>Magnetic analysis</subject><subject>Magnetite</subject><subject>Measuring instruments</subject><subject>Meters</subject><subject>permeability</subject><subject>permittivity</subject><subject>Reflectometry</subject><subject>Testing</subject><subject>Time domain analysis</subject><subject>time-domain reflectometry (TDR)</subject><subject>Velocity measurement</subject><subject>Voltage</subject><subject>Wave propagation</subject><issn>1545-598X</issn><issn>1558-0571</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNp9kUlLxEAQhYMouP4A8RI8qJdodafXo4zjAiOKC3hrejoViWTR7kScf2_HUQ8evFQV1PceVbwk2SVwTAjok9nF3f0xBVBjYRzYSrJBOFcZcElWx5nxjGv1tJ5shvACQJlSciPBaY2u911jn1vsK5feWm8b7NGHtCvTswq_9nFh2yK9_qGuq49-8BjS6butB9tjkc4X6UPVYHYWvao2vcNyVHbRyy-2k7XS1gF3vvtW8ng-fZhcZrObi6vJ6SxzuVJ9VkppQRCg1NGSCy0cc5rMnZNYgAImlCbg5pTQQjBtNaeOE1k4C-go0zrfSg6Xvq--exsw9KapgsO6ti12QzAackGFYiqSB_-SOWMUYong0b8gkRJyYDnIiO7_QV-6wbfxYaNETgWnfDyRLCHnuxA8lubVV431C0PAjFGaMUozRmm-o4yavaWmQsRfngkuGCP5J7H0mXw</recordid><startdate>20081001</startdate><enddate>20081001</enddate><creator>Mattei, E.</creator><creator>De Santis, A.</creator><creator>Di Matteo, A.</creator><creator>Pettinelli, E.</creator><creator>Vannaroni, G.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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The goal of this letter was to use TDR to determine EM parameters, assumed to be frequency independent, for various magnetite/glass-beads mixtures. The EM parameters are, in turn, used to determine the velocity and attenuation of propagating waves. The latter quantity is also obtained through the TDR voltage method. Velocities decrease, and attenuations increase with increasing magnetite content. The measurements of the present work are compared with the velocities and attenuations reported in the literature (measured via the network analyzer (NA) and LCR meter techniques). The velocities calculated using the various methods are in good agreement. In contrast, the attenuations determined by fitting the TDR data only agree with the NA measurements at high frequencies (450 MHz), while those obtained by the TDR voltage method match the low-frequency attenuations determined through the LCR meter. The reasons for these behaviors are discussed, and the need for precise handling of the TDR data is emphasized. The TDR fit procedure is recommended to obtain reliable EM parameters of materials.</abstract><cop>Piscataway</cop><pub>IEEE</pub><doi>10.1109/LGRS.2008.2004504</doi><tpages>5</tpages></addata></record> |
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| subjects | Attenuation Attenuation measurement Dielectrics Electric potential Electromagnetic propagation Frequency domain analysis Magnetic analysis Magnetite Measuring instruments Meters permeability permittivity Reflectometry Testing Time domain analysis time-domain reflectometry (TDR) Velocity measurement Voltage Wave propagation |
| title | Electromagnetic Parameters of Dielectric and Magnetic Mixtures Evaluated by Time-Domain Reflectometry |
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