{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/20714"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/20714","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Rectangular microstrip radiator for a multielement local hyperthermia applicator","abstract":"Advances in printed circuit technology facilitate the design of thin, conformable, microstrip patch antenna arrays. Such multielement microwave antenna arrays can be advantageous for controlled heating of superficial malignancies during cancer therapy. This thesis reports a theoretical analysis and design verification of the rectangular microstrip radiator for a hyperthermia applicator.","abstract_html":"Advances in printed circuit technology facilitate the design of thin, conformable, microstrip patch antenna arrays. Such multielement microwave antenna arrays can be advantageous for controlled heating of superficial malignancies during cancer therapy. This thesis reports a theoretical analysis and design verification of the rectangular microstrip radiator for a hyperthermia applicator.","abstract_has_math":false,"creators":["Underwood, Harold Roger"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Electrical Engineering","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T12:47:12Z","date_published":"2011-05-07T12:47:12Z","updated_at":"2026-07-22T22:25:16Z","subjects":["Engineering, Biomedical","Engineering, Electronics and Electrical","Physics, Electricity and Magnetism"],"languages":["eng"],"rights":["Copyright 1990 Underwood, Harold Roger"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9026339","(UMI)AAI9026339"],"render_values":[{"text":"AAI9026339","href":null,"code":true},{"text":"(UMI)AAI9026339","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/20714","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Underwood, Harold Roger"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T12:47:12Z","10000-01-01","1990"]},{"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, Biomedical","Engineering, Electronics and Electrical","Physics, Electricity and Magnetism"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1990 Underwood, Harold Roger"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9026339","(UMI)AAI9026339","http://hdl.handle.net/2142/20714"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Advances in printed circuit technology facilitate the design of thin, conformable, microstrip patch antenna arrays. Such multielement microwave antenna arrays can be advantageous for controlled heating of superficial malignancies during cancer therapy. This thesis reports a theoretical analysis and design verification of the rectangular microstrip radiator for a hyperthermia applicator.","Applicability of a cavity model approach for predicting near field patterns of a probe fed microstrip patch radiating in a lossy homogeneous medium is analyzed throughout a step-by-step development based on electromagnetic principles. A modal expansion technique and length correction factor slightly improve this model. Limitations of the simplifying assumptions and approximations in this model are tested by comparing numerical results of a single patch radiating in water with the measured results from an electric field probe. The measurement probe is an encapsulated miniature dipole designed for microwave transparent nonperturbing electric field measurement in biomedical media. Results show that safe and efficient performance of a microstrip patch as a biomedical radiator can be enhanced by a thin superstrate cover layer. Linear array patterns indicate that amplitude and phase variations can compensate for mutual coupling effects to adjust beam width and smoothness necessary in controlled hyperthermia heating.","Made available in DSpace on 2011-05-07T12:47:12Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9026339.pdf: 7252942 bytes, checksum: 23775bfb569746339065a115f760d76a (MD5) Previous issue date: 1990","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:45:46Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:20:21-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"]},{"key":"dc:title","label":"Title","values":["Rectangular microstrip radiator for a multielement local hyperthermia applicator"]}]}],"canonical_facts":{"dc:creator":["Underwood, Harold Roger"],"dc:date":["2011-05-07T12:47:12Z","10000-01-01","1990"],"dc:description":["Advances in printed circuit technology facilitate the design of thin, conformable, microstrip patch antenna arrays. Such multielement microwave antenna arrays can be advantageous for controlled heating of superficial malignancies during cancer therapy. This thesis reports a theoretical analysis and design verification of the rectangular microstrip radiator for a hyperthermia applicator.","Applicability of a cavity model approach for predicting near field patterns of a probe fed microstrip patch radiating in a lossy homogeneous medium is analyzed throughout a step-by-step development based on electromagnetic principles. A modal expansion technique and length correction factor slightly improve this model. Limitations of the simplifying assumptions and approximations in this model are tested by comparing numerical results of a single patch radiating in water with the measured results from an electric field probe. The measurement probe is an encapsulated miniature dipole designed for microwave transparent nonperturbing electric field measurement in biomedical media. Results show that safe and efficient performance of a microstrip patch as a biomedical radiator can be enhanced by a thin superstrate cover layer. Linear array patterns indicate that amplitude and phase variations can compensate for mutual coupling effects to adjust beam width and smoothness necessary in controlled hyperthermia heating.","Made available in DSpace on 2011-05-07T12:47:12Z (GMT). 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