{"id":"https://openalex.org/W2122998409","doi":"https://doi.org/10.1109/tcsi.2010.2046967","title":"Wideband Varactorless $LC$ VCO Using a Tunable Negative-Inductance Cell","display_name":"Wideband Varactorless $LC$ VCO Using a Tunable Negative-Inductance Cell","publication_year":2010,"publication_date":"2010-05-12","ids":{"openalex":"https://openalex.org/W2122998409","doi":"https://doi.org/10.1109/tcsi.2010.2046967","mag":"2122998409"},"language":"en","primary_location":{"id":"doi:10.1109/tcsi.2010.2046967","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcsi.2010.2046967","pdf_url":null,"source":{"id":"https://openalex.org/S116977442","display_name":"IEEE Transactions on Circuits and Systems I Regular Papers","issn_l":"1549-8328","issn":["1549-8328","1558-0806"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Circuits and Systems I: Regular Papers","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100383074","display_name":"Ying Chen","orcid":"https://orcid.org/0000-0002-6412-7479"},"institutions":[{"id":"https://openalex.org/I165932596","display_name":"National University of Singapore","ror":"https://ror.org/01tgyzw49","country_code":"SG","type":"education","lineage":["https://openalex.org/I165932596"]}],"countries":["SG"],"is_corresponding":true,"raw_author_name":"Ying Chen","raw_affiliation_strings":["Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Singapore","[Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore]"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Singapore","institution_ids":["https://openalex.org/I165932596"]},{"raw_affiliation_string":"[Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore]","institution_ids":["https://openalex.org/I165932596"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5061017975","display_name":"Koen Mouthaan","orcid":"https://orcid.org/0000-0003-2597-1535"},"institutions":[{"id":"https://openalex.org/I165932596","display_name":"National University of Singapore","ror":"https://ror.org/01tgyzw49","country_code":"SG","type":"education","lineage":["https://openalex.org/I165932596"]}],"countries":["SG"],"is_corresponding":false,"raw_author_name":"Koen Mouthaan","raw_affiliation_strings":["Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Singapore","[Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore]"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Singapore","institution_ids":["https://openalex.org/I165932596"]},{"raw_affiliation_string":"[Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore]","institution_ids":["https://openalex.org/I165932596"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5100383074"],"corresponding_institution_ids":["https://openalex.org/I165932596"],"apc_list":null,"apc_paid":null,"fwci":3.2291,"has_fulltext":false,"cited_by_count":34,"citation_normalized_percentile":{"value":0.92328257,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"57","issue":"10","first_page":"2609","last_page":"2617"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10187","display_name":"Radio Frequency Integrated Circuit Design","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10187","display_name":"Radio Frequency Integrated Circuit Design","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10262","display_name":"Microwave Engineering and Waveguides","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11444","display_name":"Electromagnetic Compatibility and Noise Suppression","score":0.9993000030517578,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/voltage-controlled-oscillator","display_name":"Voltage-controlled oscillator","score":0.9509744644165039},{"id":"https://openalex.org/keywords/wideband","display_name":"Wideband","score":0.9171016812324524},{"id":"https://openalex.org/keywords/dbc","display_name":"dBc","score":0.7571082711219788},{"id":"https://openalex.org/keywords/phase-noise","display_name":"Phase noise","score":0.7518999576568604},{"id":"https://openalex.org/keywords/inductance","display_name":"Inductance","score":0.5169148445129395},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.503879725933075},{"id":"https://openalex.org/keywords/offset","display_name":"Offset (computer science)","score":0.4425746202468872},{"id":"https://openalex.org/keywords/capacitor","display_name":"Capacitor","score":0.4179622232913971},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.41679805517196655},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.4107641279697418},{"id":"https://openalex.org/keywords/optoelectronics","display_name":"Optoelectronics","score":0.3499554395675659},{"id":"https://openalex.org/keywords/voltage","display_name":"Voltage","score":0.33420610427856445},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.21085119247436523},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.19428882002830505}],"concepts":[{"id":"https://openalex.org/C5291336","wikidata":"https://www.wikidata.org/wiki/Q852341","display_name":"Voltage-controlled oscillator","level":3,"score":0.9509744644165039},{"id":"https://openalex.org/C2780202535","wikidata":"https://www.wikidata.org/wiki/Q4524457","display_name":"Wideband","level":2,"score":0.9171016812324524},{"id":"https://openalex.org/C193523891","wikidata":"https://www.wikidata.org/wiki/Q1771950","display_name":"dBc","level":3,"score":0.7571082711219788},{"id":"https://openalex.org/C89631360","wikidata":"https://www.wikidata.org/wiki/Q1428766","display_name":"Phase noise","level":2,"score":0.7518999576568604},{"id":"https://openalex.org/C29210110","wikidata":"https://www.wikidata.org/wiki/Q177897","display_name":"Inductance","level":3,"score":0.5169148445129395},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.503879725933075},{"id":"https://openalex.org/C175291020","wikidata":"https://www.wikidata.org/wiki/Q1156822","display_name":"Offset (computer science)","level":2,"score":0.4425746202468872},{"id":"https://openalex.org/C52192207","wikidata":"https://www.wikidata.org/wiki/Q5322","display_name":"Capacitor","level":3,"score":0.4179622232913971},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.41679805517196655},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.4107641279697418},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.3499554395675659},{"id":"https://openalex.org/C165801399","wikidata":"https://www.wikidata.org/wiki/Q25428","display_name":"Voltage","level":2,"score":0.33420610427856445},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.21085119247436523},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.19428882002830505},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/tcsi.2010.2046967","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcsi.2010.2046967","pdf_url":null,"source":{"id":"https://openalex.org/S116977442","display_name":"IEEE Transactions on Circuits and Systems I Regular Papers","issn_l":"1549-8328","issn":["1549-8328","1558-0806"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Circuits and Systems I: Regular Papers","raw_type":"journal-article"},{"id":"pmh:oai:scholarbank.nus.edu.sg:10635/57819","is_oa":false,"landing_page_url":"http://scholarbank.nus.edu.sg/handle/10635/57819","pdf_url":null,"source":{"id":"https://openalex.org/S7407052290","display_name":"National University of Singapore","issn_l":null,"issn":[],"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Scopus","raw_type":"Article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","score":0.5699999928474426,"display_name":"Affordable and clean energy"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":37,"referenced_works":["https://openalex.org/W1512572311","https://openalex.org/W1930479515","https://openalex.org/W1972185434","https://openalex.org/W2015740233","https://openalex.org/W2018182084","https://openalex.org/W2041777739","https://openalex.org/W2048892928","https://openalex.org/W2068448508","https://openalex.org/W2073852297","https://openalex.org/W2075854179","https://openalex.org/W2077056210","https://openalex.org/W2082211203","https://openalex.org/W2099064239","https://openalex.org/W2100801472","https://openalex.org/W2102844017","https://openalex.org/W2104627485","https://openalex.org/W2109608659","https://openalex.org/W2112006904","https://openalex.org/W2123767231","https://openalex.org/W2129546514","https://openalex.org/W2130811652","https://openalex.org/W2138459508","https://openalex.org/W2140004654","https://openalex.org/W2143164108","https://openalex.org/W2144070475","https://openalex.org/W2151148290","https://openalex.org/W2151773358","https://openalex.org/W2156049209","https://openalex.org/W2161064871","https://openalex.org/W2163919544","https://openalex.org/W2168234767","https://openalex.org/W2169542778","https://openalex.org/W2548024779","https://openalex.org/W6662717023","https://openalex.org/W6675280318","https://openalex.org/W6682978230","https://openalex.org/W6729246775"],"related_works":["https://openalex.org/W2141726610","https://openalex.org/W2061664740","https://openalex.org/W1964543336","https://openalex.org/W2057338677","https://openalex.org/W2134439706","https://openalex.org/W2017334866","https://openalex.org/W2112742062","https://openalex.org/W1968602407","https://openalex.org/W2589125258","https://openalex.org/W2077056210"],"abstract_inverted_index":{"A":[0],"wideband":[1,16,102],"LC":[2],"voltage-controlled":[3],"oscillator":[4],"(VCO)":[5],"design":[6],"with":[7,63],"a":[8,23,29,38,64,84,87],"new":[9],"varactorless":[10,35,103],"frequency-tuning":[11],"technique":[12],"is":[13,20,55,61,73,98],"presented.":[14],"The":[15,69,91],"continuous":[17,39,59],"frequency":[18],"tuning":[19,40,46,60],"achieved":[21,56],"using":[22],"tunable":[24],"negative-inductance":[25],"cell.":[26],"Fabricated":[27],"in":[28,105],"0.35-\u03bcm":[30],"SiGe":[31],"BiCMOS":[32],"process,":[33],"the":[34,58,106],"VCO":[36,93],"achieves":[37],"range":[41,47],"of":[42,48],"24.5%.":[43],"An":[44],"overall":[45],"31%":[49],"from":[50,83],"3.8":[51],"to":[52],"5.2":[53],"GHz":[54],"when":[57],"combined":[62],"2-bit":[65],"switched":[66],"capacitor":[67],"array.":[68],"measured":[70],"phase":[71],"noise":[72],"-":[74,77],"109.8":[75],"and":[76,86],"109.5":[78],"dBc/Hz":[79],"at":[80],"1-MHz":[81],"offset":[82],"3.8-":[85],"5.2-GHz":[88],"carrier":[89],"frequency.":[90],"proposed":[92],"has":[94],"demonstrated":[95],"performance":[96],"that":[97],"better":[99],"than":[100],"other":[101],"VCOs":[104],"literature.":[107]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":2},{"year":2019,"cited_by_count":3},{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":5},{"year":2016,"cited_by_count":2},{"year":2014,"cited_by_count":3},{"year":2013,"cited_by_count":4},{"year":2012,"cited_by_count":5}],"updated_date":"2026-03-18T14:38:29.013473","created_date":"2025-10-10T00:00:00"}