{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/81241"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/81241","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Simulation and Analysis of Behavioral Analog Systems","abstract":"Periodic circuits and systems which are stiff pose special problems to traditional simulators like SPICE due to the wide separation in time constants characterizing them. Examples of such systems include power electronic circuits, phase-locked loops and RF circuits such as narrow-band amplifiers and mixers. The current trend towards integrating analog and digital components on a single chip has created a need for algorithms which can handle multiple components described at different levels of abstraction. This research focuses on developing techniques and algorithms for the simulation of such circuits. The new algorithms take advantage of the periodic nature of the circuit characteristics and provide improved simulation efficiency over existing techniques. The key contributions are the shooting-Broyden algorithm for time-domain steady state analysis and the envelope-following-Broyden algorithm for tracing the envelope of waveforms. Autonomous algorithms using the quasi-Newton technique have also been studied. The ability of these algorithms to handle circuits and systems described at multiple levels of abstraction and in different domains is unique. These algorithms are demonstrated to be the methods of choice for time-domain analysis of periodic systems. The algorithms have been implemented and tested in the simulator iMACSIM-ss and some behavioral blocks have been developed for power electronic circuits.","abstract_html":"Periodic circuits and systems which are stiff pose special problems to traditional simulators like SPICE due to the wide separation in time constants characterizing them. Examples of such systems include power electronic circuits, phase-locked loops and RF circuits such as narrow-band amplifiers and mixers. The current trend towards integrating analog and digital components on a single chip has created a need for algorithms which can handle multiple components described at different levels of abstraction. This research focuses on developing techniques and algorithms for the simulation of such circuits. The new algorithms take advantage of the periodic nature of the circuit characteristics and provide improved simulation efficiency over existing techniques. The key contributions are the shooting-Broyden algorithm for time-domain steady state analysis and the envelope-following-Broyden algorithm for tracing the envelope of waveforms. Autonomous algorithms using the quasi-Newton technique have also been studied. The ability of these algorithms to handle circuits and systems described at multiple levels of abstraction and in different domains is unique. These algorithms are demonstrated to be the methods of choice for time-domain analysis of periodic systems. The algorithms have been implemented and tested in the simulator iMACSIM-ss and some behavioral blocks have been developed for power electronic circuits.","abstract_has_math":false,"creators":["Ekambaram, Uma"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Electrical Engineering","degree_department":null,"school":null,"contributors":["Kang, S.M."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-25T20:10:12Z","date_published":"2015-09-25T20:10:12Z","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)AAI9904441"],"render_values":[{"text":"(MiAaPQ)AAI9904441","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/81241","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Kang, S.M."]},{"key":"dc:creator","label":"Author","values":["Ekambaram, Uma"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-25T20:10:12Z","10000-01-01","1998"]},{"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":"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/2142/81241","(MiAaPQ)AAI9904441"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Periodic circuits and systems which are stiff pose special problems to traditional simulators like SPICE due to the wide separation in time constants characterizing them. Examples of such systems include power electronic circuits, phase-locked loops and RF circuits such as narrow-band amplifiers and mixers. The current trend towards integrating analog and digital components on a single chip has created a need for algorithms which can handle multiple components described at different levels of abstraction. This research focuses on developing techniques and algorithms for the simulation of such circuits. The new algorithms take advantage of the periodic nature of the circuit characteristics and provide improved simulation efficiency over existing techniques. The key contributions are the shooting-Broyden algorithm for time-domain steady state analysis and the envelope-following-Broyden algorithm for tracing the envelope of waveforms. Autonomous algorithms using the quasi-Newton technique have also been studied. The ability of these algorithms to handle circuits and systems described at multiple levels of abstraction and in different domains is unique. These algorithms are demonstrated to be the methods of choice for time-domain analysis of periodic systems. The algorithms have been implemented and tested in the simulator iMACSIM-ss and some behavioral blocks have been developed for power electronic circuits.","Made available in DSpace on 2015-09-25T20:10:12Z (GMT). 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Examples of such systems include power electronic circuits, phase-locked loops and RF circuits such as narrow-band amplifiers and mixers. The current trend towards integrating analog and digital components on a single chip has created a need for algorithms which can handle multiple components described at different levels of abstraction. This research focuses on developing techniques and algorithms for the simulation of such circuits. The new algorithms take advantage of the periodic nature of the circuit characteristics and provide improved simulation efficiency over existing techniques. The key contributions are the shooting-Broyden algorithm for time-domain steady state analysis and the envelope-following-Broyden algorithm for tracing the envelope of waveforms. Autonomous algorithms using the quasi-Newton technique have also been studied. The ability of these algorithms to handle circuits and systems described at multiple levels of abstraction and in different domains is unique. These algorithms are demonstrated to be the methods of choice for time-domain analysis of periodic systems. The algorithms have been implemented and tested in the simulator iMACSIM-ss and some behavioral blocks have been developed for power electronic circuits.","Made available in DSpace on 2015-09-25T20:10:12Z (GMT). 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