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"Improved" Calculation of Reflection Coefficient for Coaxial Antennas With Feed Gap Effect

A method is proposed to characterize the reflection coefficient of an insulated coaxial antenna with consideration of the feed gap effect. This method models the insulated antenna as a transmission line and extends the method proposed by Su and Wu . The original model assumed the gap to be small and...

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Published in:	IEEE transactions on antennas and propagation 2009-02, Vol.57 (2), p.559-563
Main Authors:	Peng Wang, Converse, M.C., Webster, J.G., Mahvi, D.M.
Format:	Article
Language:	English
Subjects:	Antenna feeds Antenna gap model Antennas Applied sciences Capacitance coaxial antenna Coaxial components Exact sciences and technology Hyperthermia Impedance Insulation microwave ablation microwave hyperthermia Radiocommunications Reflection reflection coefficient Reflector antennas Telecommunications Telecommunications and information theory Transmission line antennas Transmission line theory
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cited_by	cdi_FETCH-LOGICAL-c383t-361cc630f45128cffa7a808f172659e6f149f9e62d9eac97ad96c8509ca827b43
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container_end_page	563
container_issue	2
container_start_page	559
container_title	IEEE transactions on antennas and propagation
container_volume	57
creator	Peng Wang Converse, M.C. Webster, J.G. Mahvi, D.M.
description	A method is proposed to characterize the reflection coefficient of an insulated coaxial antenna with consideration of the feed gap effect. This method models the insulated antenna as a transmission line and extends the method proposed by Su and Wu . The original model assumed the gap to be small and considered a simple capacitance which is ignored in the calculation. Our improvement to this model is a component added to account for the gap impedance. When using insulated dipoles in medical treatment (hyperthermia, ablation, etc.), optimized antennas may require larger gaps, which this ldquoimprovedrdquo model accounts for. Excellent agreement is observed between theoretical and numerically simulated S 11 data, which indicates that this is an appropriate model for designing an efficient applicator for interstitial microwave hyperthermia.
doi_str_mv	10.1109/TAP.2008.2011411
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This method models the insulated antenna as a transmission line and extends the method proposed by Su and Wu . The original model assumed the gap to be small and considered a simple capacitance which is ignored in the calculation. Our improvement to this model is a component added to account for the gap impedance. When using insulated dipoles in medical treatment (hyperthermia, ablation, etc.), optimized antennas may require larger gaps, which this ldquoimprovedrdquo model accounts for. Excellent agreement is observed between theoretical and numerically simulated S 11 data, which indicates that this is an appropriate model for designing an efficient applicator for interstitial microwave hyperthermia.</description><identifier>ISSN: 0018-926X</identifier><identifier>EISSN: 1558-2221</identifier><identifier>DOI: 10.1109/TAP.2008.2011411</identifier><identifier>CODEN: IETPAK</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Antenna feeds ; Antenna gap model ; Antennas ; Applied sciences ; Capacitance ; coaxial antenna ; Coaxial components ; Exact sciences and technology ; Hyperthermia ; Impedance ; Insulation ; microwave ablation ; microwave hyperthermia ; Radiocommunications ; Reflection ; reflection coefficient ; Reflector antennas ; Telecommunications ; Telecommunications and information theory ; Transmission line antennas ; Transmission line theory</subject><ispartof>IEEE transactions on antennas and propagation, 2009-02, Vol.57 (2), p.559-563</ispartof><rights>2009 INIST-CNRS</rights><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2009</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c383t-361cc630f45128cffa7a808f172659e6f149f9e62d9eac97ad96c8509ca827b43</citedby><cites>FETCH-LOGICAL-c383t-361cc630f45128cffa7a808f172659e6f149f9e62d9eac97ad96c8509ca827b43</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/4804086$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,54796</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=21285180$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Peng Wang</creatorcontrib><creatorcontrib>Converse, M.C.</creatorcontrib><creatorcontrib>Webster, J.G.</creatorcontrib><creatorcontrib>Mahvi, D.M.</creatorcontrib><title>"Improved" Calculation of Reflection Coefficient for Coaxial Antennas With Feed Gap Effect</title><title>IEEE transactions on antennas and propagation</title><addtitle>TAP</addtitle><description>A method is proposed to characterize the reflection coefficient of an insulated coaxial antenna with consideration of the feed gap effect. This method models the insulated antenna as a transmission line and extends the method proposed by Su and Wu . The original model assumed the gap to be small and considered a simple capacitance which is ignored in the calculation. Our improvement to this model is a component added to account for the gap impedance. When using insulated dipoles in medical treatment (hyperthermia, ablation, etc.), optimized antennas may require larger gaps, which this ldquoimprovedrdquo model accounts for. Excellent agreement is observed between theoretical and numerically simulated S 11 data, which indicates that this is an appropriate model for designing an efficient applicator for interstitial microwave hyperthermia.</description><subject>Antenna feeds</subject><subject>Antenna gap model</subject><subject>Antennas</subject><subject>Applied sciences</subject><subject>Capacitance</subject><subject>coaxial antenna</subject><subject>Coaxial components</subject><subject>Exact sciences and technology</subject><subject>Hyperthermia</subject><subject>Impedance</subject><subject>Insulation</subject><subject>microwave ablation</subject><subject>microwave hyperthermia</subject><subject>Radiocommunications</subject><subject>Reflection</subject><subject>reflection coefficient</subject><subject>Reflector antennas</subject><subject>Telecommunications</subject><subject>Telecommunications and information theory</subject><subject>Transmission line antennas</subject><subject>Transmission line theory</subject><issn>0018-926X</issn><issn>1558-2221</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNp9kc1rGzEQxUVoIa7be6AXYUh62lQjabXS0Zh8QaAhpDTkIibyiCqsd53VOjT_feXY5NBDLxoe83vDjB5jRyBOAYT7fje_OZVC2PIAaIADNoG6tpWUEj6wiRBgKyfN_SH7lPNTkdpqPWEPs6vVeuhfaDnjC2zDpsUx9R3vI7-l2FJ4U4ueYkwhUTfy2A9F45-ELZ93I3UdZv4rjb_5OdGSX-Can8VYjJ_Zx4htpi_7OmU_z8_uFpfV9Y-Lq8X8ugrKqrFSBkIwSkRdg7QhRmzQChuhkaZ2ZCJoF0uVS0cYXINLZ4KthQtoZfOo1ZR9280tdzxvKI9-lXKgtsWO-k32TigjGwuikCf_JZXWShunCjj7B3zqN0NXrvAOpDKNLqtPmdhBYehzHij69ZBWOLx6EH6biS-Z-G0mfp9JsRzv52IO2MYBu5Dyu0-WD6jBbhf9uuMSEb23tRVaWKP-Ar_ZkpM</recordid><startdate>20090201</startdate><enddate>20090201</enddate><creator>Peng Wang</creator><creator>Converse, M.C.</creator><creator>Webster, J.G.</creator><creator>Mahvi, D.M.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope><scope>F28</scope><scope>FR3</scope></search><sort><creationdate>20090201</creationdate><title>"Improved" Calculation of Reflection Coefficient for Coaxial Antennas With Feed Gap Effect</title><author>Peng Wang ; Converse, M.C. ; Webster, J.G. ; Mahvi, D.M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c383t-361cc630f45128cffa7a808f172659e6f149f9e62d9eac97ad96c8509ca827b43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Antenna feeds</topic><topic>Antenna gap model</topic><topic>Antennas</topic><topic>Applied sciences</topic><topic>Capacitance</topic><topic>coaxial antenna</topic><topic>Coaxial components</topic><topic>Exact sciences and technology</topic><topic>Hyperthermia</topic><topic>Impedance</topic><topic>Insulation</topic><topic>microwave ablation</topic><topic>microwave hyperthermia</topic><topic>Radiocommunications</topic><topic>Reflection</topic><topic>reflection coefficient</topic><topic>Reflector antennas</topic><topic>Telecommunications</topic><topic>Telecommunications and information theory</topic><topic>Transmission line antennas</topic><topic>Transmission line theory</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Peng Wang</creatorcontrib><creatorcontrib>Converse, M.C.</creatorcontrib><creatorcontrib>Webster, J.G.</creatorcontrib><creatorcontrib>Mahvi, D.M.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE/IET Electronic Library (IEL)</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><jtitle>IEEE transactions on antennas and propagation</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Peng Wang</au><au>Converse, M.C.</au><au>Webster, J.G.</au><au>Mahvi, D.M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>"Improved" Calculation of Reflection Coefficient for Coaxial Antennas With Feed Gap Effect</atitle><jtitle>IEEE transactions on antennas and propagation</jtitle><stitle>TAP</stitle><date>2009-02-01</date><risdate>2009</risdate><volume>57</volume><issue>2</issue><spage>559</spage><epage>563</epage><pages>559-563</pages><issn>0018-926X</issn><eissn>1558-2221</eissn><coden>IETPAK</coden><abstract>A method is proposed to characterize the reflection coefficient of an insulated coaxial antenna with consideration of the feed gap effect. This method models the insulated antenna as a transmission line and extends the method proposed by Su and Wu . The original model assumed the gap to be small and considered a simple capacitance which is ignored in the calculation. Our improvement to this model is a component added to account for the gap impedance. When using insulated dipoles in medical treatment (hyperthermia, ablation, etc.), optimized antennas may require larger gaps, which this ldquoimprovedrdquo model accounts for. Excellent agreement is observed between theoretical and numerically simulated S 11 data, which indicates that this is an appropriate model for designing an efficient applicator for interstitial microwave hyperthermia.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TAP.2008.2011411</doi><tpages>5</tpages></addata></record>
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source	IEEE Electronic Library (IEL) Journals
subjects	Antenna feeds Antenna gap model Antennas Applied sciences Capacitance coaxial antenna Coaxial components Exact sciences and technology Hyperthermia Impedance Insulation microwave ablation microwave hyperthermia Radiocommunications Reflection reflection coefficient Reflector antennas Telecommunications Telecommunications and information theory Transmission line antennas Transmission line theory
title	"Improved" Calculation of Reflection Coefficient for Coaxial Antennas With Feed Gap Effect
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