{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/129665"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/129665","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Investigation of electrically small antennas designed for directive radiation from transient signaling","abstract":"Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01","abstract_html":"Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01","abstract_has_math":false,"creators":["Mitchell, David S"],"institution":"University of Illinois Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Electrical & Computer Engr","degree_department":null,"school":null,"contributors":["Bernhard, Jennifer T","Schutt-Aine, Jose E","Makela, Jonathan J","Kolb, Paul"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2025,"date_issued":"2025-03-04","date_published":"2025-03-04","updated_at":"2026-07-22T22:25:05Z","subjects":["Antennas","electrically small antennas","directivity","transient antennas"],"languages":["en","eng"],"rights":["Copyright 2025 David Mitchell"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/129665","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Bernhard, Jennifer T","Schutt-Aine, Jose E","Makela, Jonathan J","Kolb, Paul"]},{"key":"dc:creator","label":"Author","values":["Mitchell, David S"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2025-03-04","2025-05"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical & Computer Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Antennas","electrically small antennas","directivity","transient antennas"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2025 David Mitchell"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/129665"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01","The student, David Mitchell, accepted the attached license on 2025-02-28 at 11:09.","The student, David Mitchell, submitted this Dissertation for approval on 2025-02-28 at 11:17.","This Dissertation was approved for publication on 2025-03-04 at 15:44.","DSpace SAF Submission Ingestion Package generated from Vireo submission #21653 on 2025-10-19 at 19:52:23","Electrically small antennas are a useful subset of antennas because of their small physical size; however, they are inherently limited in their performance because of the relation between electrical size and bandwidth. Many authors have recently sought to improve the performance of electrically small antennas by introducing nonlinear or time-varying components, using transient signaling, or increasing the directivity of the antenna. This work explores an antenna system that leverages the inherent narrowband nature of an electrically small antenna to achieve directive radiation from the transient ringing of the antenna system. This novel antenna is first explored through simulation. Next, a circuit model for predicting the operating frequency of this antenna is developed. Several versions of this antenna are then manufactured and characterized. Finally, a method for characterizing the transient behavior of an antenna is described and used to demonstrate the directive transient radiation of this antenna. This dissertation demonstrates the design of an antenna shown to have directive radiation with both continuous and transient excitations and methods for characterizing that radiation."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Investigation of electrically small antennas designed for directive radiation from transient signaling"]}]}],"canonical_facts":{"dc:contributor":["Bernhard, Jennifer T","Schutt-Aine, Jose E","Makela, Jonathan J","Kolb, Paul"],"dc:creator":["Mitchell, David S"],"dc:date":["2025-03-04","2025-05"],"dc:description":["Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01","The student, David Mitchell, accepted the attached license on 2025-02-28 at 11:09.","The student, David Mitchell, submitted this Dissertation for approval on 2025-02-28 at 11:17.","This Dissertation was approved for publication on 2025-03-04 at 15:44.","DSpace SAF Submission Ingestion Package generated from Vireo submission #21653 on 2025-10-19 at 19:52:23","Electrically small antennas are a useful subset of antennas because of their small physical size; however, they are inherently limited in their performance because of the relation between electrical size and bandwidth. Many authors have recently sought to improve the performance of electrically small antennas by introducing nonlinear or time-varying components, using transient signaling, or increasing the directivity of the antenna. This work explores an antenna system that leverages the inherent narrowband nature of an electrically small antenna to achieve directive radiation from the transient ringing of the antenna system. This novel antenna is first explored through simulation. Next, a circuit model for predicting the operating frequency of this antenna is developed. Several versions of this antenna are then manufactured and characterized. Finally, a method for characterizing the transient behavior of an antenna is described and used to demonstrate the directive transient radiation of this antenna. This dissertation demonstrates the design of an antenna shown to have directive radiation with both continuous and transient excitations and methods for characterizing that radiation."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/129665"],"dc:language":["en","eng"],"dc:rights":["Copyright 2025 David Mitchell"],"dc:subject":["Antennas","electrically small antennas","directivity","transient antennas"],"dc:title":["Investigation of electrically small antennas designed for directive radiation from transient signaling"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Electrical & Computer Engr"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:05Z"}