{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/78795"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/78795","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Impact of ground plane serrations on radiation and impedance characteristics of a slot antenna over a conductive back plane","abstract":"Thinness and placement-insensitivity are necessary qualities for RFID and wearable antennas as well as those used in many other applications. An antenna can be made indifferent to the material on which it is placed by shielding it with a conductive back plane. Slot antennas and planar dipole antennas are common choices for thin, placement-insensitive designs. They can be manufactured in a very economical fashion because both feed connections are on the same plane. However, when the conductive back plane is applied to a thin slot or dipole antenna, the bandwidth is significantly reduced. In the case of the slot antenna, this bandwidth reduction is due in part to reactive energy stored in parallel plate modes. The stored energy can be reduced by treating the edge of the ground plane with serrations. Our primary goal is to show the design trade-offs between bandwidth and thickness for the conductor-backed, serrated slot antenna. In our analysis we use simulations which we validate through measurements. Two bandwidth measures, L-network matched and intrinsic, are used to evaluate impedance bandwidth across many design variations. Finally, the far-field radiation is investigated to shed light on the underlying mechanisms affecting impedance.","abstract_html":"Thinness and placement-insensitivity are necessary qualities for RFID and wearable antennas as well as those used in many other applications. An antenna can be made indifferent to the material on which it is placed by shielding it with a conductive back plane. Slot antennas and planar dipole antennas are common choices for thin, placement-insensitive designs. They can be manufactured in a very economical fashion because both feed connections are on the same plane. However, when the conductive back plane is applied to a thin slot or dipole antenna, the bandwidth is significantly reduced. In the case of the slot antenna, this bandwidth reduction is due in part to reactive energy stored in parallel plate modes. The stored energy can be reduced by treating the edge of the ground plane with serrations. Our primary goal is to show the design trade-offs between bandwidth and thickness for the conductor-backed, serrated slot antenna. In our analysis we use simulations which we validate through measurements. Two bandwidth measures, L-network matched and intrinsic, are used to evaluate impedance bandwidth across many design variations. Finally, the far-field radiation is investigated to shed light on the underlying mechanisms affecting impedance.","abstract_has_math":false,"creators":["Young, Matthew A"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Electrical & Computer Engr","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-07-22T22:46:07Z","date_published":"2015-07-22T22:46:07Z","updated_at":"2026-07-22T22:26:12Z","subjects":["slot antenna","radio-frequency identification (RFID)","wearable antenna"],"languages":["en"],"rights":["Copyright 2015 Matthew Young"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/78795","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Young, Matthew A"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-07-22T22:46:07Z","2017-07-23T09:15:32Z","2015-05","2015-04-30","2015-5"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical & Computer Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["slot antenna","radio-frequency identification (RFID)","wearable antenna"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2015 Matthew Young"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/78795"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Thinness and placement-insensitivity are necessary qualities for RFID and wearable antennas as well as those used in many other applications. An antenna can be made indifferent to the material on which it is placed by shielding it with a conductive back plane. Slot antennas and planar dipole antennas are common choices for thin, placement-insensitive designs. They can be manufactured in a very economical fashion because both feed connections are on the same plane. However, when the conductive back plane is applied to a thin slot or dipole antenna, the bandwidth is significantly reduced. In the case of the slot antenna, this bandwidth reduction is due in part to reactive energy stored in parallel plate modes. The stored energy can be reduced by treating the edge of the ground plane with serrations. Our primary goal is to show the design trade-offs between bandwidth and thickness for the conductor-backed, serrated slot antenna. In our analysis we use simulations which we validate through measurements. Two bandwidth measures, L-network matched and intrinsic, are used to evaluate impedance bandwidth across many design variations. Finally, the far-field radiation is investigated to shed light on the underlying mechanisms affecting impedance.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2017-05-01","The student, Matthew Young, accepted the attached license on 2015-04-28 at 15:49.","The student, Matthew Young, submitted this Thesis for approval on 2015-04-28 at 16:03.","This Thesis was approved for publication on 2015-04-30 at 10:11.","DSpace SAF Submission Ingestion Package generated from Vireo submission #8165 on 2015-07-22 at 14:26:33","Made available in DSpace on 2015-07-22T22:46:07Z (GMT). No. of bitstreams: 2 YOUNG-THESIS-2015.pdf: 9411108 bytes, checksum: 257688d47f0aa88f05eb312dfe6600da (MD5) LICENSE.txt: 4210 bytes, checksum: 29a72037864c9817be03d43f570d2de8 (MD5) Previous issue date: 2015-04-30","Embargo set by: Seth Robbins for item 80036 Lift date: 2017-07-22T22:46:21Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited Restriction Lifted for Item 80036 on 2017-07-23T09:15:32Z."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Impact of ground plane serrations on radiation and impedance characteristics of a slot antenna over a conductive back plane"]}]}],"canonical_facts":{"dc:creator":["Young, Matthew A"],"dc:date":["2015-07-22T22:46:07Z","2017-07-23T09:15:32Z","2015-05","2015-04-30","2015-5"],"dc:description":["Thinness and placement-insensitivity are necessary qualities for RFID and wearable antennas as well as those used in many other applications. An antenna can be made indifferent to the material on which it is placed by shielding it with a conductive back plane. Slot antennas and planar dipole antennas are common choices for thin, placement-insensitive designs. They can be manufactured in a very economical fashion because both feed connections are on the same plane. However, when the conductive back plane is applied to a thin slot or dipole antenna, the bandwidth is significantly reduced. In the case of the slot antenna, this bandwidth reduction is due in part to reactive energy stored in parallel plate modes. The stored energy can be reduced by treating the edge of the ground plane with serrations. Our primary goal is to show the design trade-offs between bandwidth and thickness for the conductor-backed, serrated slot antenna. In our analysis we use simulations which we validate through measurements. Two bandwidth measures, L-network matched and intrinsic, are used to evaluate impedance bandwidth across many design variations. Finally, the far-field radiation is investigated to shed light on the underlying mechanisms affecting impedance.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2017-05-01","The student, Matthew Young, accepted the attached license on 2015-04-28 at 15:49.","The student, Matthew Young, submitted this Thesis for approval on 2015-04-28 at 16:03.","This Thesis was approved for publication on 2015-04-30 at 10:11.","DSpace SAF Submission Ingestion Package generated from Vireo submission #8165 on 2015-07-22 at 14:26:33","Made available in DSpace on 2015-07-22T22:46:07Z (GMT). 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