{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/69390"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/69390","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Numerical Methods for the Electromagnetic Modeling of Microstrip Antennas and Feed Systems","abstract":"The importance of low-cost printed circuit antennas has brought about a continued effort to improve and simplify the analysis of multilayered or stratified media. This thesis derives the dyadic Green functions for the electromagnetic fields in a multilayered medium and shows their relationship to the more familiar Green functions for ordinary transmission lines. This approach simplifies the analysis and allows the treatment of an arbitrary number of layers with a minimal increase in effort.","abstract_html":"The importance of low-cost printed circuit antennas has brought about a continued effort to improve and simplify the analysis of multilayered or stratified media. This thesis derives the dyadic Green functions for the electromagnetic fields in a multilayered medium and shows their relationship to the more familiar Green functions for ordinary transmission lines. This approach simplifies the analysis and allows the treatment of an arbitrary number of layers with a minimal increase in effort.","abstract_has_math":false,"creators":["Tanner, David Robert"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Electrical Engineering","degree_department":null,"school":null,"contributors":["Mayes, Paul E."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-12-15T19:05:32Z","date_published":"2014-12-15T19:05:32Z","updated_at":"2026-07-22T22:26:00Z","subjects":["Engineering, Electronics and Electrical"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8815428"],"render_values":[{"text":"(UMI)AAI8815428","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/69390","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Mayes, Paul E."]},{"key":"dc:creator","label":"Author","values":["Tanner, David Robert"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-12-15T19:05:32Z","10000-01-01","1988"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical 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":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/69390","(UMI)AAI8815428"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The importance of low-cost printed circuit antennas has brought about a continued effort to improve and simplify the analysis of multilayered or stratified media. This thesis derives the dyadic Green functions for the electromagnetic fields in a multilayered medium and shows their relationship to the more familiar Green functions for ordinary transmission lines. This approach simplifies the analysis and allows the treatment of an arbitrary number of layers with a minimal increase in effort.","The theory is applied to the analysis of a microstrip antenna fed by a slot line. This configuration is an attractive element for use in active integrated arrays. This new hybrid technology attempts to incorporate active devices such as amplifiers and phase shifters with printed "microstrip" antennas into a single monolithic package. The boundary value problem for the antenna is analyzed in terms of the integral equations for the equivalent electric currents on the patch and magnetic currents representing the slot line. The integral equations are discretized by Galerkin's method and solved on the computer. Techniques designed to enhance the convergence of the spectral domain integrals are described. Important antenna parameters such as the input reflection coefficient are extracted from the solution of the boundary value problem. The problem concerning definition of antenna impedance (which is nonunique) can be avoided by using this technique. Finally, a method for obtaining automated measurements of the antenna reflection coefficient in the guide of interest is developed. Measurements of the reflection coefficient in a slot line feeding a microstrip patch are compared with computer-generated results of the theory.","Made available in DSpace on 2014-12-15T19:05:32Z (GMT). No. of bitstreams: 1 8815428.pdf: 2686136 bytes, checksum: 3ea9afe5cc247407388b27382d4cf2ef (MD5) Previous issue date: 1988","Embargo set by: Seth Robbins for item 69556 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","84 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1988."]},{"key":"dc:title","label":"Title","values":["Numerical Methods for the Electromagnetic Modeling of Microstrip Antennas and Feed Systems"]}]}],"canonical_facts":{"dc:contributor":["Mayes, Paul E."],"dc:creator":["Tanner, David Robert"],"dc:date":["2014-12-15T19:05:32Z","10000-01-01","1988"],"dc:description":["The importance of low-cost printed circuit antennas has brought about a continued effort to improve and simplify the analysis of multilayered or stratified media. This thesis derives the dyadic Green functions for the electromagnetic fields in a multilayered medium and shows their relationship to the more familiar Green functions for ordinary transmission lines. This approach simplifies the analysis and allows the treatment of an arbitrary number of layers with a minimal increase in effort.","The theory is applied to the analysis of a microstrip antenna fed by a slot line. This configuration is an attractive element for use in active integrated arrays. This new hybrid technology attempts to incorporate active devices such as amplifiers and phase shifters with printed "microstrip" antennas into a single monolithic package. The boundary value problem for the antenna is analyzed in terms of the integral equations for the equivalent electric currents on the patch and magnetic currents representing the slot line. The integral equations are discretized by Galerkin's method and solved on the computer. Techniques designed to enhance the convergence of the spectral domain integrals are described. Important antenna parameters such as the input reflection coefficient are extracted from the solution of the boundary value problem. The problem concerning definition of antenna impedance (which is nonunique) can be avoided by using this technique. Finally, a method for obtaining automated measurements of the antenna reflection coefficient in the guide of interest is developed. Measurements of the reflection coefficient in a slot line feeding a microstrip patch are compared with computer-generated results of the theory.","Made available in DSpace on 2014-12-15T19:05:32Z (GMT). No. of bitstreams: 1 8815428.pdf: 2686136 bytes, checksum: 3ea9afe5cc247407388b27382d4cf2ef (MD5) Previous issue date: 1988","Embargo set by: Seth Robbins for item 69556 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","84 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1988."],"dc:identifier":["http://hdl.handle.net/2142/69390","(UMI)AAI8815428"],"dc:subject":["Engineering, Electronics and Electrical"],"dc:title":["Numerical Methods for the Electromagnetic Modeling of Microstrip Antennas and Feed Systems"],"dc:type":["text"],"thesis:degree_discipline":["Electrical Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:00Z"}