{"id":"https://openalex.org/W2111642015","doi":"https://doi.org/10.1109/isscc.2009.4977337","title":"A 45nm low-power SAW-less WCDMA transmit modulator using direct quadrature voltage modulation","display_name":"A 45nm low-power SAW-less WCDMA transmit modulator using direct quadrature voltage modulation","publication_year":2009,"publication_date":"2009-02-01","ids":{"openalex":"https://openalex.org/W2111642015","doi":"https://doi.org/10.1109/isscc.2009.4977337","mag":"2111642015"},"language":"en","primary_location":{"id":"doi:10.1109/isscc.2009.4977337","is_oa":false,"landing_page_url":"https://doi.org/10.1109/isscc.2009.4977337","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE International Solid-State Circuits Conference - Digest of Technical Papers","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/A5054957806","display_name":"Xin He","orcid":"https://orcid.org/0000-0001-6983-3834"},"institutions":[{"id":"https://openalex.org/I109147379","display_name":"NXP (Netherlands)","ror":"https://ror.org/059be4e97","country_code":"NL","type":"company","lineage":["https://openalex.org/I109147379"]}],"countries":["NL"],"is_corresponding":false,"raw_author_name":"Xin He","raw_affiliation_strings":["NXP Semiconductors, Eindhoven, Netherlands","NXP semiconductors, Eindhoven, Netherlands"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NXP Semiconductors, Eindhoven, Netherlands","institution_ids":["https://openalex.org/I109147379"]},{"raw_affiliation_string":"NXP semiconductors, Eindhoven, Netherlands","institution_ids":["https://openalex.org/I109147379"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5021942853","display_name":"Jan van Sinderen","orcid":null},"institutions":[{"id":"https://openalex.org/I109147379","display_name":"NXP (Netherlands)","ror":"https://ror.org/059be4e97","country_code":"NL","type":"company","lineage":["https://openalex.org/I109147379"]}],"countries":["NL"],"is_corresponding":false,"raw_author_name":"J. van Sinderen","raw_affiliation_strings":["NXP Semiconductors, Eindhoven, Netherlands","NXP semiconductors, Eindhoven, Netherlands"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NXP Semiconductors, Eindhoven, Netherlands","institution_ids":["https://openalex.org/I109147379"]},{"raw_affiliation_string":"NXP semiconductors, Eindhoven, Netherlands","institution_ids":["https://openalex.org/I109147379"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I109147379"],"apc_list":null,"apc_paid":null,"fwci":8.7376,"has_fulltext":false,"cited_by_count":30,"citation_normalized_percentile":{"value":0.9865449,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"120","last_page":"121,121a"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10187","display_name":"Radio Frequency Integrated Circuit Design","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"}},"topics":[{"id":"https://openalex.org/T10187","display_name":"Radio Frequency Integrated Circuit Design","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/T11160","display_name":"Acoustic Wave Resonator Technologies","score":0.9988999962806702,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical 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/T12791","display_name":"Full-Duplex Wireless Communications","score":0.9983999729156494,"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/duplexer","display_name":"Duplexer","score":0.9129174947738647},{"id":"https://openalex.org/keywords/w-cdma","display_name":"W-CDMA","score":0.823513925075531},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.5573039650917053},{"id":"https://openalex.org/keywords/offset","display_name":"Offset (computer science)","score":0.5529336929321289},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.5077763199806213},{"id":"https://openalex.org/keywords/code-division-multiple-access","display_name":"Code division multiple access","score":0.49959278106689453},{"id":"https://openalex.org/keywords/wideband","display_name":"Wideband","score":0.48178526759147644},{"id":"https://openalex.org/keywords/modulation","display_name":"Modulation (music)","score":0.4371180236339569},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.42230942845344543},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.35247576236724854},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.25228023529052734},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.2275065779685974},{"id":"https://openalex.org/keywords/antenna","display_name":"Antenna (radio)","score":0.11859077215194702}],"concepts":[{"id":"https://openalex.org/C47104104","wikidata":"https://www.wikidata.org/wiki/Q1266530","display_name":"Duplexer","level":3,"score":0.9129174947738647},{"id":"https://openalex.org/C120620775","wikidata":"https://www.wikidata.org/wiki/Q79686","display_name":"W-CDMA","level":3,"score":0.823513925075531},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.5573039650917053},{"id":"https://openalex.org/C175291020","wikidata":"https://www.wikidata.org/wiki/Q1156822","display_name":"Offset (computer science)","level":2,"score":0.5529336929321289},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.5077763199806213},{"id":"https://openalex.org/C47696715","wikidata":"https://www.wikidata.org/wiki/Q233394","display_name":"Code division multiple access","level":2,"score":0.49959278106689453},{"id":"https://openalex.org/C2780202535","wikidata":"https://www.wikidata.org/wiki/Q4524457","display_name":"Wideband","level":2,"score":0.48178526759147644},{"id":"https://openalex.org/C123079801","wikidata":"https://www.wikidata.org/wiki/Q750240","display_name":"Modulation (music)","level":2,"score":0.4371180236339569},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.42230942845344543},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.35247576236724854},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.25228023529052734},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.2275065779685974},{"id":"https://openalex.org/C21822782","wikidata":"https://www.wikidata.org/wiki/Q131214","display_name":"Antenna (radio)","level":2,"score":0.11859077215194702},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/isscc.2009.4977337","is_oa":false,"landing_page_url":"https://doi.org/10.1109/isscc.2009.4977337","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE International Solid-State Circuits Conference - Digest of Technical Papers","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.8299999833106995,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":4,"referenced_works":["https://openalex.org/W2097950739","https://openalex.org/W2143417292","https://openalex.org/W2166206430","https://openalex.org/W6681484573"],"related_works":["https://openalex.org/W4205841262","https://openalex.org/W2140316772","https://openalex.org/W2110215088","https://openalex.org/W1923728761","https://openalex.org/W2111642015","https://openalex.org/W1987630393","https://openalex.org/W2160121287","https://openalex.org/W2730250775","https://openalex.org/W2544103561","https://openalex.org/W1529230111"],"abstract_inverted_index":{"In":[0,22,127],"FDD":[1],"systems":[2],"such":[3],"as":[4],"WCDMA":[5,34,79,118,142],"and":[6,9,119],"LTE,":[7],"TX":[8,31,96,143],"RX":[10,28],"operate":[11],"simultaneously,":[12],"while":[13],"the":[14,17,27,30,54,62,67,91,95,123,133,136,141],"duplexer":[15,55],"provides":[16],"necessary":[18],"isolation":[19,52],"between":[20],"them.":[21],"order":[23,128],"not":[24,129],"to":[25,38,66,71,116,130,147],"desensitize":[26],"path,":[29],"noise":[32,97,138],"in":[33,122],"band":[35,69],"1":[36],"has":[37],"be":[39,103,148],"lower":[40,104],"than":[41,105],"\u2212155dBc/Hz":[42],"at":[43,60,98],"190MHz":[44],"offset":[45,65,77,100],"(RX":[46],"band),":[47],"given":[48],"a":[49,83,113],"45dB":[50],"TX-to-RX":[51],"from":[53],"[1].":[56],"Furthermore,":[57],"when":[58],"transmitting":[59],"1920MHz,":[61],"nearest":[63],"frequency":[64],"DCS":[68],"(1805":[70],"1880MHz)":[72],"is":[73,101,112,144],"40MHz.":[74],"At":[75],"this":[76],"typical":[78],"duplexers":[80],"only":[81],"offer":[82],"few":[84],"dB":[85],"of":[86,140],"attenuation.":[87],"To":[88],"comply":[89],"with":[90,132],"3GPP":[92],"emissions":[93],"mask,":[94],"\u221240MHz":[99],"expected":[102],"\u2212148dBc/Hz":[106],"(with":[107],"3dB":[108],"margin).":[109],"Currently":[110],"there":[111],"growing":[114],"demand":[115],"integrate":[117],"GPS":[120,134],"applications":[121],"same":[124],"mobile":[125],"device.":[126],"interfere":[131],"receiver,":[135],"far-out":[137],"floor":[139],"also":[145],"desired":[146],"very":[149],"low.":[150]},"counts_by_year":[{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":4},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":2}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}