{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/98402"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/98402","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Design of fully digital inductors for low bandwidth filter applications","abstract":"We are currently living in the age of intelligent machines, where we are interested in acquiring data and making decisions all from some sort of embedded environment. Of particular value are personal health metrics, such as the analysis of heart rate, muscle action potentials, and brain waves. Collecting this data requires new advances in the circuitry behind much of classical filter design. In this thesis, we present a digital inductor based on time-domain signal processing. This approach uses the phase-domain theory that is well-known and understood in the fields of clocking and serial links and applies it to analog circuit design. By using a ring oscillator to integrate the input voltage and a switched transconductor to inject current into the input node, the proposed time-domain gyrator achieves inductive input impedance without using either large resistors or capacitors. Realizing the gyrator in this manner makes it significantly more amenable for technology scaling. Fabricated in 65 nm CMOS process, the inductor operates from a 0.7 V supply voltage and consumes 528 μW. Measurement results show inductance values in the range of 150 μH to 1.5 mH can be achieved.","abstract_html":"We are currently living in the age of intelligent machines, where we are interested in acquiring data and making decisions all from some sort of embedded environment. Of particular value are personal health metrics, such as the analysis of heart rate, muscle action potentials, and brain waves. Collecting this data requires new advances in the circuitry behind much of classical filter design. In this thesis, we present a digital inductor based on time-domain signal processing. This approach uses the phase-domain theory that is well-known and understood in the fields of clocking and serial links and applies it to analog circuit design. By using a ring oscillator to integrate the input voltage and a switched transconductor to inject current into the input node, the proposed time-domain gyrator achieves inductive input impedance without using either large resistors or capacitors. Realizing the gyrator in this manner makes it significantly more amenable for technology scaling. Fabricated in 65 nm CMOS process, the inductor operates from a 0.7 V supply voltage and consumes 528 μW. Measurement results show inductance values in the range of 150 μH to 1.5 mH can be achieved.","abstract_has_math":false,"creators":["Salz, Braedon Lenox"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Electrical & Computer Engr","degree_department":null,"school":null,"contributors":["Hanumolu, Pavan K."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-09-29T17:56:57Z","date_published":"2017-09-29T17:56:57Z","updated_at":"2026-07-22T22:24:35Z","subjects":["Inductor","Phase-domain","Time-domain signal processing"],"languages":["en"],"rights":["This thesis is beerware licensed: As long as you retain this notice you can do whatever you want with this stuff. If we meet some day, and you think this stuff is worth it, you can buy me a beer in return."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/98402","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Hanumolu, Pavan K."]},{"key":"dc:creator","label":"Author","values":["Salz, Braedon Lenox"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2017-09-29T17:56:57Z","2017-07-17","2017-08"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical & Computer Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"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":["Inductor","Phase-domain","Time-domain signal processing"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["This thesis is beerware licensed: As long as you retain this notice you can do whatever you want with this stuff. If we meet some day, and you think this stuff is worth it, you can buy me a beer in return."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/98402"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["We are currently living in the age of intelligent machines, where we are interested in acquiring data and making decisions all from some sort of embedded environment. Of particular value are personal health metrics, such as the analysis of heart rate, muscle action potentials, and brain waves. Collecting this data requires new advances in the circuitry behind much of classical filter design. In this thesis, we present a digital inductor based on time-domain signal processing. This approach uses the phase-domain theory that is well-known and understood in the fields of clocking and serial links and applies it to analog circuit design. By using a ring oscillator to integrate the input voltage and a switched transconductor to inject current into the input node, the proposed time-domain gyrator achieves inductive input impedance without using either large resistors or capacitors. Realizing the gyrator in this manner makes it significantly more amenable for technology scaling. Fabricated in 65 nm CMOS process, the inductor operates from a 0.7 V supply voltage and consumes 528 μW. Measurement results show inductance values in the range of 150 μH to 1.5 mH can be achieved.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2017-09-29 without embargo terms","The student, Braedon Salz, accepted the attached license on 2017-07-14 at 15:20.","The student, Braedon Salz, submitted this Thesis for approval on 2017-07-14 at 15:26.","This Thesis was approved for publication on 2017-07-17 at 09:04.","DSpace SAF Submission Ingestion Package generated from Vireo submission #11475 on 2017-09-29 at 11:30:54","Made available in DSpace on 2017-09-29T17:56:57Z (GMT). No. of bitstreams: 2 SALZ-THESIS-2017.pdf: 3401360 bytes, checksum: e5c83dd7f0be7e517d45ad09e21daba9 (MD5) LICENSE.txt: 4209 bytes, checksum: 9220ce5618a0bd4373245e0d0c6885bd (MD5) Previous issue date: 2017-07-17"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Design of fully digital inductors for low bandwidth filter applications"]}]}],"canonical_facts":{"dc:contributor":["Hanumolu, Pavan K."],"dc:creator":["Salz, Braedon Lenox"],"dc:date":["2017-09-29T17:56:57Z","2017-07-17","2017-08"],"dc:description":["We are currently living in the age of intelligent machines, where we are interested in acquiring data and making decisions all from some sort of embedded environment. Of particular value are personal health metrics, such as the analysis of heart rate, muscle action potentials, and brain waves. Collecting this data requires new advances in the circuitry behind much of classical filter design. In this thesis, we present a digital inductor based on time-domain signal processing. This approach uses the phase-domain theory that is well-known and understood in the fields of clocking and serial links and applies it to analog circuit design. By using a ring oscillator to integrate the input voltage and a switched transconductor to inject current into the input node, the proposed time-domain gyrator achieves inductive input impedance without using either large resistors or capacitors. Realizing the gyrator in this manner makes it significantly more amenable for technology scaling. Fabricated in 65 nm CMOS process, the inductor operates from a 0.7 V supply voltage and consumes 528 μW. Measurement results show inductance values in the range of 150 μH to 1.5 mH can be achieved.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2017-09-29 without embargo terms","The student, Braedon Salz, accepted the attached license on 2017-07-14 at 15:20.","The student, Braedon Salz, submitted this Thesis for approval on 2017-07-14 at 15:26.","This Thesis was approved for publication on 2017-07-17 at 09:04.","DSpace SAF Submission Ingestion Package generated from Vireo submission #11475 on 2017-09-29 at 11:30:54","Made available in DSpace on 2017-09-29T17:56:57Z (GMT). No. of bitstreams: 2 SALZ-THESIS-2017.pdf: 3401360 bytes, checksum: e5c83dd7f0be7e517d45ad09e21daba9 (MD5) LICENSE.txt: 4209 bytes, checksum: 9220ce5618a0bd4373245e0d0c6885bd (MD5) Previous issue date: 2017-07-17"],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/98402"],"dc:language":["en"],"dc:rights":["This thesis is beerware licensed: As long as you retain this notice you can do whatever you want with this stuff. If we meet some day, and you think this stuff is worth it, you can buy me a beer in return."],"dc:subject":["Inductor","Phase-domain","Time-domain signal processing"],"dc:title":["Design of fully digital inductors for low bandwidth filter applications"],"dc:type":["text"],"thesis:degree_discipline":["Electrical & Computer Engr"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:35Z"}