{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/69362"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/69362","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Efficiency Considerations in Narrow-Band Gallium-Arsenide Acoustoelectric Devices","abstract":"Power loss mechanisms are investigated in high-power SAW-based acoustoelectric devices on gallium arsenide. Power losses in reflective UHF SAW driving transducers often used in such devices are studied by a detailed coupled-mode model. The results of this model (which show excellent agreement with experimental data) indicate the finger resistance losses are the main problem, but that losses can be made quite low. A laser probe system, built for this work, is analyzed and used to provide much new information about unguided and guided pseudo-SAW propagation on nominally (100) cut. $$ propagating GaAs. Both measured data and analysis are provided. The feasibility of using acoustic guiding structures in high-power acoustoelectric devices is investigated, along with novel approaches to couple energy into the guides and to recirculate the acoustic power for as long as possible.","abstract_html":"Power loss mechanisms are investigated in high-power SAW-based acoustoelectric devices on gallium arsenide. Power losses in reflective UHF SAW driving transducers often used in such devices are studied by a detailed coupled-mode model. The results of this model (which show excellent agreement with experimental data) indicate the finger resistance losses are the main problem, but that losses can be made quite low. A laser probe system, built for this work, is analyzed and used to provide much new information about unguided and guided pseudo-SAW propagation on nominally (100) cut. $$ propagating GaAs. Both measured data and analysis are provided. The feasibility of using acoustic guiding structures in high-power acoustoelectric devices is investigated, along with novel approaches to couple energy into the guides and to recirculate the acoustic power for as long as possible.","abstract_has_math":false,"creators":["Miller, Robert Lewis"],"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":2014,"date_issued":"2014-12-15T19:05:19Z","date_published":"2014-12-15T19:05:19Z","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)AAI8721717"],"render_values":[{"text":"(UMI)AAI8721717","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/69362","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Miller, Robert Lewis"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-12-15T19:05:19Z","10000-01-01","1987"]},{"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/2142/69362","(UMI)AAI8721717"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Power loss mechanisms are investigated in high-power SAW-based acoustoelectric devices on gallium arsenide. Power losses in reflective UHF SAW driving transducers often used in such devices are studied by a detailed coupled-mode model. The results of this model (which show excellent agreement with experimental data) indicate the finger resistance losses are the main problem, but that losses can be made quite low. A laser probe system, built for this work, is analyzed and used to provide much new information about unguided and guided pseudo-SAW propagation on nominally (100) cut. $$ propagating GaAs. Both measured data and analysis are provided. The feasibility of using acoustic guiding structures in high-power acoustoelectric devices is investigated, along with novel approaches to couple energy into the guides and to recirculate the acoustic power for as long as possible.","Made available in DSpace on 2014-12-15T19:05:19Z (GMT). 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The results of this model (which show excellent agreement with experimental data) indicate the finger resistance losses are the main problem, but that losses can be made quite low. A laser probe system, built for this work, is analyzed and used to provide much new information about unguided and guided pseudo-SAW propagation on nominally (100) cut. $$ propagating GaAs. Both measured data and analysis are provided. The feasibility of using acoustic guiding structures in high-power acoustoelectric devices is investigated, along with novel approaches to couple energy into the guides and to recirculate the acoustic power for as long as possible.","Made available in DSpace on 2014-12-15T19:05:19Z (GMT). No. of bitstreams: 1 8721717.pdf: 5498854 bytes, checksum: 2ad9ddee179d8d05df159d8860769826 (MD5) Previous issue date: 1987","Embargo set by: Seth Robbins for item 69528 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","224 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1987."],"dc:identifier":["http://hdl.handle.net/2142/69362","(UMI)AAI8721717"],"dc:subject":["Engineering, Electronics and Electrical"],"dc:title":["Efficiency Considerations in Narrow-Band Gallium-Arsenide Acoustoelectric Devices"],"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"}