{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/80976"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/80976","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"A Radiation Reconfigurable Magnetic Line Source Antenna: Modeling, Integration With RF MEMS, and Applications","abstract":"This document presents the work and progress of a radiation reconfigurable microstrip antenna. It has been designed to reconfigure its radiation pattern between broadside and endfire directions. Each configuration operates within an impedance bandwidth common to both states, and the desired radiation characteristics in both states occur in the same plane (principal plane) of the antenna with the same polarization (principal polarization). A unique analytical modeling technique---developed for the reconfigurable antenna in this work---verifies the radiating mechanism, accurately predicts the reconfigured radiation patterns, and provides physical insight into the impedance behavior. It also serves as a basis for future designs having different substrate and/or frequency requirements, and provides the root for the antenna's name---the Magnetic Line Source Antenna MSLA. Integration of the reconfigurable antenna with packaged RF MEMS switches (S-band design) has been implemented (bias structures, control lines, etc.) and measured results are provided. This continues with discussion on the fabrication (direct integration) of the antenna with RF MEMS switches (Ka-band design) using bulk micromachining processes. The attributes of this reconfigurable antenna have a wide variety of applications and offer potential benefits to many areas. The applications discussed include potential improvements in the scanning capabilities of large phased arrays, applications in diversity and antenna correlation, and multimode radiating structures.","abstract_html":"This document presents the work and progress of a radiation reconfigurable microstrip antenna. It has been designed to reconfigure its radiation pattern between broadside and endfire directions. Each configuration operates within an impedance bandwidth common to both states, and the desired radiation characteristics in both states occur in the same plane (principal plane) of the antenna with the same polarization (principal polarization). A unique analytical modeling technique---developed for the reconfigurable antenna in this work---verifies the radiating mechanism, accurately predicts the reconfigured radiation patterns, and provides physical insight into the impedance behavior. It also serves as a basis for future designs having different substrate and/or frequency requirements, and provides the root for the antenna's name---the Magnetic Line Source Antenna MSLA. Integration of the reconfigurable antenna with packaged RF MEMS switches (S-band design) has been implemented (bias structures, control lines, etc.) and measured results are provided. This continues with discussion on the fabrication (direct integration) of the antenna with RF MEMS switches (Ka-band design) using bulk micromachining processes. The attributes of this reconfigurable antenna have a wide variety of applications and offer potential benefits to many areas. The applications discussed include potential improvements in the scanning capabilities of large phased arrays, applications in diversity and antenna correlation, and multimode radiating structures.","abstract_has_math":false,"creators":["Huff, Gregory Hilding"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Electrical and Computer Engineering","degree_department":null,"school":null,"contributors":["Bernhard, Jennifer T."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-25T20:09:04Z","date_published":"2015-09-25T20:09:04Z","updated_at":"2026-07-22T22:26:15Z","subjects":["Engineering, Electronics and Electrical"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI3242876"],"render_values":[{"text":"(MiAaPQ)AAI3242876","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/80976","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Bernhard, Jennifer T."]},{"key":"dc:creator","label":"Author","values":["Huff, Gregory Hilding"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-25T20:09:04Z","10000-01-01","2006"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical and Computer Engineering"]},{"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 at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering, Electronics and Electrical"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/80976","(MiAaPQ)AAI3242876"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["This document presents the work and progress of a radiation reconfigurable microstrip antenna. 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This continues with discussion on the fabrication (direct integration) of the antenna with RF MEMS switches (Ka-band design) using bulk micromachining processes. The attributes of this reconfigurable antenna have a wide variety of applications and offer potential benefits to many areas. The applications discussed include potential improvements in the scanning capabilities of large phased arrays, applications in diversity and antenna correlation, and multimode radiating structures.","Made available in DSpace on 2015-09-25T20:09:04Z (GMT). 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It has been designed to reconfigure its radiation pattern between broadside and endfire directions. Each configuration operates within an impedance bandwidth common to both states, and the desired radiation characteristics in both states occur in the same plane (principal plane) of the antenna with the same polarization (principal polarization). A unique analytical modeling technique---developed for the reconfigurable antenna in this work---verifies the radiating mechanism, accurately predicts the reconfigured radiation patterns, and provides physical insight into the impedance behavior. It also serves as a basis for future designs having different substrate and/or frequency requirements, and provides the root for the antenna's name---the Magnetic Line Source Antenna MSLA. Integration of the reconfigurable antenna with packaged RF MEMS switches (S-band design) has been implemented (bias structures, control lines, etc.) and measured results are provided. This continues with discussion on the fabrication (direct integration) of the antenna with RF MEMS switches (Ka-band design) using bulk micromachining processes. The attributes of this reconfigurable antenna have a wide variety of applications and offer potential benefits to many areas. The applications discussed include potential improvements in the scanning capabilities of large phased arrays, applications in diversity and antenna correlation, and multimode radiating structures.","Made available in DSpace on 2015-09-25T20:09:04Z (GMT). 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