{"id":"https://openalex.org/W3159026642","doi":"https://doi.org/10.1109/iscas51556.2021.9401736","title":"A 1GHz Configurable Chirp Modulation Direct Digital Frequency Synthesizer in 65nm CMOS","display_name":"A 1GHz Configurable Chirp Modulation Direct Digital Frequency Synthesizer in 65nm CMOS","publication_year":2021,"publication_date":"2021-04-27","ids":{"openalex":"https://openalex.org/W3159026642","doi":"https://doi.org/10.1109/iscas51556.2021.9401736","mag":"3159026642"},"language":"en","primary_location":{"id":"doi:10.1109/iscas51556.2021.9401736","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iscas51556.2021.9401736","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE International Symposium on Circuits and Systems (ISCAS)","raw_type":"proceedings-article"},"type":"conference-paper","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/A5020415885","display_name":"Ting Guo","orcid":"https://orcid.org/0000-0002-7853-7479"},"institutions":[{"id":"https://openalex.org/I172675005","display_name":"Nanyang Technological University","ror":"https://ror.org/02e7b5302","country_code":"SG","type":"education","lineage":["https://openalex.org/I172675005"]}],"countries":["SG"],"is_corresponding":false,"raw_author_name":"Ting Guo","raw_affiliation_strings":["Center for Integrated Circuits and Systems, Nanyang Technological University, Singapore"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Center for Integrated Circuits and Systems, Nanyang Technological University, Singapore","institution_ids":["https://openalex.org/I172675005"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5026522298","display_name":"Kai Tang","orcid":"https://orcid.org/0000-0001-8512-3701"},"institutions":[{"id":"https://openalex.org/I172675005","display_name":"Nanyang Technological University","ror":"https://ror.org/02e7b5302","country_code":"SG","type":"education","lineage":["https://openalex.org/I172675005"]}],"countries":["SG"],"is_corresponding":false,"raw_author_name":"Kai Tang","raw_affiliation_strings":["Center for Integrated Circuits and Systems, Nanyang Technological University, Singapore"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Center for Integrated Circuits and Systems, Nanyang Technological University, Singapore","institution_ids":["https://openalex.org/I172675005"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5016044907","display_name":"Yuanjin Zheng","orcid":"https://orcid.org/0000-0002-5768-367X"},"institutions":[{"id":"https://openalex.org/I172675005","display_name":"Nanyang Technological University","ror":"https://ror.org/02e7b5302","country_code":"SG","type":"education","lineage":["https://openalex.org/I172675005"]}],"countries":["SG"],"is_corresponding":false,"raw_author_name":"Yuanjin Zheng","raw_affiliation_strings":["Center for Integrated Circuits and Systems, Nanyang Technological University, Singapore"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Center for Integrated Circuits and Systems, Nanyang Technological University, Singapore","institution_ids":["https://openalex.org/I172675005"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I172675005"],"apc_list":null,"apc_paid":null,"fwci":1.6193,"has_fulltext":false,"cited_by_count":8,"citation_normalized_percentile":{"value":0.81221313,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"4"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11697","display_name":"Numerical Methods and Algorithms","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11697","display_name":"Numerical Methods and Algorithms","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11417","display_name":"Advancements in PLL and VCO Technologies","score":0.9997000098228455,"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/T11034","display_name":"Digital Filter Design and Implementation","score":0.9955999851226807,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/chirp","display_name":"Chirp","score":0.8329876661300659},{"id":"https://openalex.org/keywords/direct-digital-synthesizer","display_name":"Direct digital synthesizer","score":0.7302669286727905},{"id":"https://openalex.org/keywords/frequency-modulation","display_name":"Frequency modulation","score":0.6081987023353577},{"id":"https://openalex.org/keywords/cmos","display_name":"CMOS","score":0.5905967950820923},{"id":"https://openalex.org/keywords/pulse-repetition-frequency","display_name":"Pulse repetition frequency","score":0.5596261620521545},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.5478293299674988},{"id":"https://openalex.org/keywords/chirp-spread-spectrum","display_name":"Chirp spread spectrum","score":0.524997353553772},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5233782529830933},{"id":"https://openalex.org/keywords/frequency-synthesizer","display_name":"Frequency synthesizer","score":0.5094295144081116},{"id":"https://openalex.org/keywords/modulation","display_name":"Modulation (music)","score":0.4500114619731903},{"id":"https://openalex.org/keywords/pulse-width-modulation","display_name":"Pulse-width modulation","score":0.4131552577018738},{"id":"https://openalex.org/keywords/radar","display_name":"Radar","score":0.308815062046051},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.3073708415031433},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.29064473509788513},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.24849161505699158},{"id":"https://openalex.org/keywords/phase-locked-loop","display_name":"Phase-locked loop","score":0.2208474576473236},{"id":"https://openalex.org/keywords/radio-frequency","display_name":"Radio frequency","score":0.20048049092292786},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.1941276490688324},{"id":"https://openalex.org/keywords/spread-spectrum","display_name":"Spread spectrum","score":0.1857272982597351},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.17403185367584229},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.15573826432228088},{"id":"https://openalex.org/keywords/voltage","display_name":"Voltage","score":0.14501458406448364},{"id":"https://openalex.org/keywords/phase-noise","display_name":"Phase noise","score":0.14422863721847534},{"id":"https://openalex.org/keywords/direct-sequence-spread-spectrum","display_name":"Direct-sequence spread spectrum","score":0.11767134070396423}],"concepts":[{"id":"https://openalex.org/C132794960","wikidata":"https://www.wikidata.org/wiki/Q27304","display_name":"Chirp","level":3,"score":0.8329876661300659},{"id":"https://openalex.org/C166089067","wikidata":"https://www.wikidata.org/wiki/Q1227465","display_name":"Direct digital synthesizer","level":5,"score":0.7302669286727905},{"id":"https://openalex.org/C11930861","wikidata":"https://www.wikidata.org/wiki/Q181417","display_name":"Frequency modulation","level":3,"score":0.6081987023353577},{"id":"https://openalex.org/C46362747","wikidata":"https://www.wikidata.org/wiki/Q173431","display_name":"CMOS","level":2,"score":0.5905967950820923},{"id":"https://openalex.org/C182862853","wikidata":"https://www.wikidata.org/wiki/Q575887","display_name":"Pulse repetition frequency","level":3,"score":0.5596261620521545},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.5478293299674988},{"id":"https://openalex.org/C105152959","wikidata":"https://www.wikidata.org/wiki/Q1074780","display_name":"Chirp spread spectrum","level":5,"score":0.524997353553772},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5233782529830933},{"id":"https://openalex.org/C182099602","wikidata":"https://www.wikidata.org/wiki/Q2660678","display_name":"Frequency synthesizer","level":4,"score":0.5094295144081116},{"id":"https://openalex.org/C123079801","wikidata":"https://www.wikidata.org/wiki/Q750240","display_name":"Modulation (music)","level":2,"score":0.4500114619731903},{"id":"https://openalex.org/C92746544","wikidata":"https://www.wikidata.org/wiki/Q585184","display_name":"Pulse-width modulation","level":3,"score":0.4131552577018738},{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.308815062046051},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.3073708415031433},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.29064473509788513},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.24849161505699158},{"id":"https://openalex.org/C12707504","wikidata":"https://www.wikidata.org/wiki/Q52637","display_name":"Phase-locked loop","level":3,"score":0.2208474576473236},{"id":"https://openalex.org/C74064498","wikidata":"https://www.wikidata.org/wiki/Q3396184","display_name":"Radio frequency","level":2,"score":0.20048049092292786},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.1941276490688324},{"id":"https://openalex.org/C105344744","wikidata":"https://www.wikidata.org/wiki/Q958957","display_name":"Spread spectrum","level":3,"score":0.1857272982597351},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.17403185367584229},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.15573826432228088},{"id":"https://openalex.org/C165801399","wikidata":"https://www.wikidata.org/wiki/Q25428","display_name":"Voltage","level":2,"score":0.14501458406448364},{"id":"https://openalex.org/C89631360","wikidata":"https://www.wikidata.org/wiki/Q1428766","display_name":"Phase noise","level":2,"score":0.14422863721847534},{"id":"https://openalex.org/C194491627","wikidata":"https://www.wikidata.org/wiki/Q1334354","display_name":"Direct-sequence spread spectrum","level":4,"score":0.11767134070396423},{"id":"https://openalex.org/C47696715","wikidata":"https://www.wikidata.org/wiki/Q233394","display_name":"Code division multiple access","level":2,"score":0.0},{"id":"https://openalex.org/C520434653","wikidata":"https://www.wikidata.org/wiki/Q38867","display_name":"Laser","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/iscas51556.2021.9401736","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iscas51556.2021.9401736","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE International Symposium on Circuits and Systems (ISCAS)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7","score":0.6899999976158142}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":4,"referenced_works":["https://openalex.org/W2101021701","https://openalex.org/W2115511191","https://openalex.org/W2147535734","https://openalex.org/W4235930683"],"related_works":["https://openalex.org/W2317297318","https://openalex.org/W2155641694","https://openalex.org/W2972564959","https://openalex.org/W2166555237","https://openalex.org/W2161572852","https://openalex.org/W4211159923","https://openalex.org/W2096340620","https://openalex.org/W2039530206","https://openalex.org/W2391839310","https://openalex.org/W2156491131"],"abstract_inverted_index":{"A":[0],"1GHz":[1],"configurable":[2],"chirp":[3,26,68,76],"modulation":[4],"(CM)":[5],"direct":[6],"digital":[7],"frequency":[8,30,44,83],"synthesizer":[9],"(DDFS)":[10],"is":[11,21,40],"presented":[12],"and":[13,57,70,79],"implemented":[14],"in":[15],"65nm":[16],"CMOS":[17],"technology.":[18],"This":[19,64],"DDFS":[20,65,93],"designed":[22],"to":[23],"generate":[24],"70-86MHz":[25],"signal":[27],"for":[28],"X-band":[29],"modulated":[31],"continuous":[32],"wave":[33],"(FMCW)":[34],"radar":[35],"system.":[36],"The":[37,92],"proposed":[38],"design":[39],"composed":[41],"of":[42,75],"64-bit":[43],"control":[45],"word":[46],"(FCW)":[47],"serial":[48],"peripheral":[49],"interface":[50],"bus":[51],"(SPI)":[52],"supported":[53],"20-bit":[54],"frequency/phase":[55],"accumulator":[56],"10-bit":[58],"linear/non-linear":[59],"hybrid":[60],"digital-to-analog":[61],"convertor":[62],"(DAC).":[63],"supports":[66],"saw-tooth":[67],"mode":[69],"exhibits":[71],"20-900":[72],"\u03bcs":[73],"time":[74],"duration":[77],"(TCD)":[78],"1ms":[80],"pulse":[81],"recurrence":[82],"(PRF),":[84],"dissipates":[85],"24mW@1GHz":[86],"clock":[87],"from":[88],"a":[89],"1.2V":[90],"supply.":[91],"core":[94],"occupies":[95],"180\u03bcm\u00d7170\u03bcm":[96],"area.":[97]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":2}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}
