{"id":{"repo_id":"uoit","oai_identifier":"oai:ontariotechu.scholaris.ca:10155/1885"},"canonical_url":"https://search.dev.ndltd.org/etd/uoit/oai:ontariotechu.scholaris.ca:10155/1885","repository":{"repo_id":"uoit","name":"Ontario Institute of Technology","base_url":"https://ontariotechu.scholaris.ca/server/oai/request"},"display":{"title":"Design and measurement of antennas within lossy materials for IoT applications","abstract":"Internet of Things (IoT) technology for asset tracking in the transportation and logistics industry relies on wireless electronic communicating devices, often encapsulated with lossy filler materials which cause issues for the embedded antennas. This thesis studies methods of enhancing antenna radiation efficiency in such situations along with an improved, low-cost way of measuring radiation efficiency. Multiple modified Wheeler caps are compared to a conventional design to obtain improved accuracy of the calculated radiation efficiency. The proposed adjustable-length Wheeler cap was verified in simulation and experimentally to significantly reduce the average error over a typical IoT antenna’s operating bandwidth. Furthermore, artificial magnetic conductors in conjunction with 1 cm3 air gaps are examined as methods of improving the radiation efficiency of both directional and omni-directional antennas placed near metal and encapsulated in resin, yielding up to 18% improvement in radiation efficiency.","abstract_html":"Internet of Things (IoT) technology for asset tracking in the transportation and logistics industry relies on wireless electronic communicating devices, often encapsulated with lossy filler materials which cause issues for the embedded antennas. This thesis studies methods of enhancing antenna radiation efficiency in such situations along with an improved, low-cost way of measuring radiation efficiency. Multiple modified Wheeler caps are compared to a conventional design to obtain improved accuracy of the calculated radiation efficiency. The proposed adjustable-length Wheeler cap was verified in simulation and experimentally to significantly reduce the average error over a typical IoT antenna’s operating bandwidth. Furthermore, artificial magnetic conductors in conjunction with 1 cm3 air gaps are examined as methods of improving the radiation efficiency of both directional and omni-directional antennas placed near metal and encapsulated in resin, yielding up to 18% improvement in radiation efficiency.","abstract_has_math":false,"creators":["Howorth, Joshua"],"institution":"University of Ontario Institute of Technology","degree_name":"Master of Applied Science (MASc)","degree_level":null,"degree_discipline":"Electrical and Computer Engineering","degree_department":null,"school":null,"contributors":[],"advisors":["Wang, Ying","Roy, Langis"],"committee_chairs":[],"committee_members":[],"year":2023,"date_issued":"2023-12-01","date_published":"2023-12-01","updated_at":"2026-07-24T05:35:38Z","subjects":[],"languages":["en"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/10155/1885","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Wang, Ying","Roy, Langis"]},{"key":"dc:creator","label":"Author","values":["Howorth, Joshua"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2025-03-17T16:53:14Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2025-03-17T16:53:14Z"]},{"key":"dc:date.issued","label":"Date","values":["2023-12-01"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical and Computer Engineering"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Applied Science (MASc)"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Ontario Institute of Technology"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/10155/1885"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Internet of Things (IoT) technology for asset tracking in the transportation and logistics industry relies on wireless electronic communicating devices, often encapsulated with lossy filler materials which cause issues for the embedded antennas. This thesis studies methods of enhancing antenna radiation efficiency in such situations along with an improved, low-cost way of measuring radiation efficiency. Multiple modified Wheeler caps are compared to a conventional design to obtain improved accuracy of the calculated radiation efficiency. The proposed adjustable-length Wheeler cap was verified in simulation and experimentally to significantly reduce the average error over a typical IoT antenna’s operating bandwidth. Furthermore, artificial magnetic conductors in conjunction with 1 cm3 air gaps are examined as methods of improving the radiation efficiency of both directional and omni-directional antennas placed near metal and encapsulated in resin, yielding up to 18% improvement in radiation efficiency."]},{"key":"dc:title","label":"Title","values":["Design and measurement of antennas within lossy materials for IoT applications"]}]}],"canonical_facts":{"dc:contributor.advisor":["Wang, Ying","Roy, Langis"],"dc:creator":["Howorth, Joshua"],"dc:date.accessioned":["2025-03-17T16:53:14Z"],"dc:date.available":["2025-03-17T16:53:14Z"],"dc:date.issued":["2023-12-01"],"dc:description.abstract":["Internet of Things (IoT) technology for asset tracking in the transportation and logistics industry relies on wireless electronic communicating devices, often encapsulated with lossy filler materials which cause issues for the embedded antennas. This thesis studies methods of enhancing antenna radiation efficiency in such situations along with an improved, low-cost way of measuring radiation efficiency. Multiple modified Wheeler caps are compared to a conventional design to obtain improved accuracy of the calculated radiation efficiency. The proposed adjustable-length Wheeler cap was verified in simulation and experimentally to significantly reduce the average error over a typical IoT antenna’s operating bandwidth. Furthermore, artificial magnetic conductors in conjunction with 1 cm3 air gaps are examined as methods of improving the radiation efficiency of both directional and omni-directional antennas placed near metal and encapsulated in resin, yielding up to 18% improvement in radiation efficiency."],"dc:identifier.uri":["https://hdl.handle.net/10155/1885"],"dc:language.iso":["en"],"dc:title":["Design and measurement of antennas within lossy materials for IoT applications"],"dc:type":["Thesis"],"thesis:degree_discipline":["Electrical and Computer Engineering"],"thesis:degree_name":["Master of Applied Science (MASc)"],"thesis:institution_name":["University of Ontario Institute of Technology"]},"updated_at":"2026-07-24T05:35:38Z"}