{"id":{"repo_id":"bologna","oai_identifier":"oai:amsdottorato.cib.unibo.it:935"},"canonical_url":"https://search.dev.ndltd.org/etd/bologna/oai:amsdottorato.cib.unibo.it:935","repository":{"repo_id":"bologna","name":"Università di Bologna","base_url":"https://amsdottorato.unibo.it/cgi/oai2"},"display":{"title":"Nonlinear/electromagnetic co-simulation of microwaves and millimeter-waves links","abstract":"The Ph.D. thesis describes the simulations of different microwave links from the transmitter to the receiver intermediate-frequency ports, by means of a rigorous circuit-level nonlinear analysis approach coupled with the electromagnetic characterization of the transmitter and receiver front ends. This includes a full electromagnetic computation of the radiated far field which is used to establish the connection between transmitter and receiver. Digitally modulated radio-frequency drive is treated by a modulation-oriented harmonic-balance method based on Krylov-subspace model-order reduction to allow the handling of large-size front ends. Different examples of links have been presented: an End-to-End link simulated by making use of an artificial neural network model; the latter allows a fast computation of the link itself when driven by long sequences of the order of millions of samples. In this way a meaningful evaluation of such link performance aspects as the bit error rate becomes possible at the circuit level. Subsequently, a work focused on the co-simulation an entire link including a realistic simulation of the radio channel has been presented. The channel has been characterized by means of a deterministic approach, such as Ray Tracing technique. Then, a 2x2 multiple-input multiple-output antenna link has been simulated; in this work near-field and far-field coupling between radiating elements, as well as the environment factors, has been rigorously taken into account. Finally, within the scope to simulate an entire ultra-wideband link, the transmitting side of an ultrawideband link has been designed, and an interesting Front-End co-design technique application has been setup.","abstract_html":"The Ph.D. thesis describes the simulations of different microwave links from the transmitter to the receiver intermediate-frequency ports, by means of a rigorous circuit-level nonlinear analysis approach coupled with the electromagnetic characterization of the transmitter and receiver front ends. This includes a full electromagnetic computation of the radiated far field which is used to establish the connection between transmitter and receiver. Digitally modulated radio-frequency drive is treated by a modulation-oriented harmonic-balance method based on Krylov-subspace model-order reduction to allow the handling of large-size front ends. Different examples of links have been presented: an End-to-End link simulated by making use of an artificial neural network model; the latter allows a fast computation of the link itself when driven by long sequences of the order of millions of samples. In this way a meaningful evaluation of such link performance aspects as the bit error rate becomes possible at the circuit level. Subsequently, a work focused on the co-simulation an entire link including a realistic simulation of the radio channel has been presented. The channel has been characterized by means of a deterministic approach, such as Ray Tracing technique. Then, a 2x2 multiple-input multiple-output antenna link has been simulated; in this work near-field and far-field coupling between radiating elements, as well as the environment factors, has been rigorously taken into account. Finally, within the scope to simulate an entire ultra-wideband link, the transmitting side of an ultrawideband link has been designed, and an interesting Front-End co-design technique application has been setup.","abstract_has_math":false,"creators":["Spadoni, Paolo <1980>"],"institution":"Alma Mater Studiorum - Università di Bologna","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Rizzoli, Vittorio"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2008,"date_issued":"2008-05-06","date_published":"2008-05-06","updated_at":"2026-07-24T01:12:02Z","subjects":["ING-INF/02 Campi elettromagnetici"],"languages":["en"],"rights":["info:eu-repo/semantics/openAccess"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["urn:nbn:it:unibo-904"],"render_values":[{"text":"urn:nbn:it:unibo-904","href":null,"code":true}]}]},"links":{"outbound_url":"https://doi.org/10.6092/unibo/amsdottorato/935.","outbound_label":"DOI","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Rizzoli, Vittorio"]},{"key":"dc:creator","label":"Author","values":["Spadoni, Paolo <1980>"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2008-05-06"]},{"key":"dc:publisher","label":"Institution","values":["Alma Mater Studiorum - Università di Bologna"]},{"key":"dc:relation","label":"Dc Relation","values":["https://amsdottorato.unibo.it/id/eprint/935/"]},{"key":"dc:type","label":"Dc Type","values":["Doctoral Thesis","PeerReviewed"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["ING-INF/02 Campi elettromagnetici"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["info:eu-repo/semantics/openAccess"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://amsdottorato.unibo.it/id/eprint/935/1/Tesi_Spadoni_Paolo.pdf","urn:nbn:it:unibo-904","Spadoni, Paolo (2008) Co-simulazione nonlineare/elettromagnetica di radiocollegamenti a microonde e onde millimetriche, [Dissertation thesis], Alma Mater Studiorum Università di Bologna. 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Different examples of links have been presented: an End-to-End link simulated by making use of an artificial neural network model; the latter allows a fast computation of the link itself when driven by long sequences of the order of millions of samples. In this way a meaningful evaluation of such link performance aspects as the bit error rate becomes possible at the circuit level. Subsequently, a work focused on the co-simulation an entire link including a realistic simulation of the radio channel has been presented. The channel has been characterized by means of a deterministic approach, such as Ray Tracing technique. Then, a 2x2 multiple-input multiple-output antenna link has been simulated; in this work near-field and far-field coupling between radiating elements, as well as the environment factors, has been rigorously taken into account. Finally, within the scope to simulate an entire ultra-wideband link, the transmitting side of an ultrawideband link has been designed, and an interesting Front-End co-design technique application has been setup."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Nonlinear/electromagnetic co-simulation of microwaves and millimeter-waves links","Co-simulazione nonlineare/elettromagnetica di radiocollegamenti a microonde e onde millimetriche"]}]}],"canonical_facts":{"dc:contributor":["Rizzoli, Vittorio"],"dc:creator":["Spadoni, Paolo <1980>"],"dc:date":["2008-05-06"],"dc:description":["The Ph.D. thesis describes the simulations of different microwave links from the transmitter to the receiver intermediate-frequency ports, by means of a rigorous circuit-level nonlinear analysis approach coupled with the electromagnetic characterization of the transmitter and receiver front ends. This includes a full electromagnetic computation of the radiated far field which is used to establish the connection between transmitter and receiver. Digitally modulated radio-frequency drive is treated by a modulation-oriented harmonic-balance method based on Krylov-subspace model-order reduction to allow the handling of large-size front ends. Different examples of links have been presented: an End-to-End link simulated by making use of an artificial neural network model; the latter allows a fast computation of the link itself when driven by long sequences of the order of millions of samples. In this way a meaningful evaluation of such link performance aspects as the bit error rate becomes possible at the circuit level. Subsequently, a work focused on the co-simulation an entire link including a realistic simulation of the radio channel has been presented. The channel has been characterized by means of a deterministic approach, such as Ray Tracing technique. Then, a 2x2 multiple-input multiple-output antenna link has been simulated; in this work near-field and far-field coupling between radiating elements, as well as the environment factors, has been rigorously taken into account. Finally, within the scope to simulate an entire ultra-wideband link, the transmitting side of an ultrawideband link has been designed, and an interesting Front-End co-design technique application has been setup."],"dc:format":["application/pdf"],"dc:identifier":["https://amsdottorato.unibo.it/id/eprint/935/1/Tesi_Spadoni_Paolo.pdf","urn:nbn:it:unibo-904","Spadoni, Paolo (2008) Co-simulazione nonlineare/elettromagnetica di radiocollegamenti a microonde e onde millimetriche, [Dissertation thesis], Alma Mater Studiorum Università di Bologna. Dottorato di ricerca in Ingegneria elettronica, informatica e delle telecomunicazioni <https://amsdottorato.unibo.it/view/dottorati/DOT323/>, 20 Ciclo. 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