{"id":"https://openalex.org/W7134107014","doi":"https://doi.org/10.1109/access.2026.3671652","title":"A Concurrent Dual-Band Power Amplifier With Diplexer Based on Asymmetric Load Coupler","display_name":"A Concurrent Dual-Band Power Amplifier With Diplexer Based on Asymmetric Load Coupler","publication_year":2026,"publication_date":"2026-01-01","ids":{"openalex":"https://openalex.org/W7134107014","doi":"https://doi.org/10.1109/access.2026.3671652"},"language":"en","primary_location":{"id":"doi:10.1109/access.2026.3671652","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2026.3671652","pdf_url":null,"source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"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 Access","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://doi.org/10.1109/access.2026.3671652","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100411980","display_name":"Jinhyun Kim","orcid":"https://orcid.org/0000-0002-4121-5767"},"institutions":[{"id":"https://openalex.org/I139264467","display_name":"Seoul National University","ror":"https://ror.org/04h9pn542","country_code":"KR","type":"education","lineage":["https://openalex.org/I139264467"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Jinhyun Kim","raw_affiliation_strings":["Department of Electrical and Computer Engineering (ECE), Institute of New Media and Communications (INMC), Seoul National University, Seoul, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0002-4121-5767","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering (ECE), Institute of New Media and Communications (INMC), Seoul National University, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I139264467"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5012411062","display_name":"Seongwoog Oh","orcid":"https://orcid.org/0000-0002-7013-0586"},"institutions":[{"id":"https://openalex.org/I124633538","display_name":"University of Seoul","ror":"https://ror.org/05en5nh73","country_code":"KR","type":"education","lineage":["https://openalex.org/I124633538"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Seongwoog Oh","raw_affiliation_strings":["School of Electrical and Computer Engineering, University of Seoul, Seoul, South Korea"],"raw_orcid":"https://orcid.org/0000-0002-7013-0586","affiliations":[{"raw_affiliation_string":"School of Electrical and Computer Engineering, University of Seoul, Seoul, South Korea","institution_ids":["https://openalex.org/I124633538"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5128313418","display_name":"Jungsuek Oh","orcid":null},"institutions":[{"id":"https://openalex.org/I139264467","display_name":"Seoul National University","ror":"https://ror.org/04h9pn542","country_code":"KR","type":"education","lineage":["https://openalex.org/I139264467"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Jungsuek Oh","raw_affiliation_strings":["Department of Electrical and Computer Engineering (ECE), Institute of New Media and Communications (INMC), Seoul National University, Seoul, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0002-2156-4927","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering (ECE), Institute of New Media and Communications (INMC), Seoul National University, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I139264467"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":1850,"currency":"USD","value_usd":1850},"apc_paid":{"value":1850,"currency":"USD","value_usd":1850},"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.21186721,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"14","issue":null,"first_page":"39821","last_page":"39829"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11248","display_name":"Advanced Power Amplifier Design","score":0.6004999876022339,"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/T11248","display_name":"Advanced Power Amplifier Design","score":0.6004999876022339,"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/T10187","display_name":"Radio Frequency Integrated Circuit Design","score":0.19050000607967377,"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":0.15309999883174896,"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/diplexer","display_name":"Diplexer","score":0.8187999725341797},{"id":"https://openalex.org/keywords/amplifier","display_name":"Amplifier","score":0.597599983215332},{"id":"https://openalex.org/keywords/hybrid-coupler","display_name":"Hybrid coupler","score":0.5491999983787537},{"id":"https://openalex.org/keywords/multi-band-device","display_name":"Multi-band device","score":0.5113999843597412},{"id":"https://openalex.org/keywords/power","display_name":"Power (physics)","score":0.48899999260902405},{"id":"https://openalex.org/keywords/dual","display_name":"Dual (grammatical number)","score":0.43140000104904175},{"id":"https://openalex.org/keywords/active-load","display_name":"Active load","score":0.3070000112056732}],"concepts":[{"id":"https://openalex.org/C81774821","wikidata":"https://www.wikidata.org/wiki/Q1227176","display_name":"Diplexer","level":2,"score":0.8187999725341797},{"id":"https://openalex.org/C194257627","wikidata":"https://www.wikidata.org/wiki/Q211554","display_name":"Amplifier","level":3,"score":0.597599983215332},{"id":"https://openalex.org/C80185135","wikidata":"https://www.wikidata.org/wiki/Q1417986","display_name":"Hybrid coupler","level":3,"score":0.5491999983787537},{"id":"https://openalex.org/C134546842","wikidata":"https://www.wikidata.org/wiki/Q1756885","display_name":"Multi-band device","level":3,"score":0.5113999843597412},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.48899999260902405},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.4422999918460846},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.4359999895095825},{"id":"https://openalex.org/C2780980858","wikidata":"https://www.wikidata.org/wiki/Q110022","display_name":"Dual (grammatical number)","level":2,"score":0.43140000104904175},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.39160001277923584},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.38589999079704285},{"id":"https://openalex.org/C29760048","wikidata":"https://www.wikidata.org/wiki/Q4677562","display_name":"Active load","level":4,"score":0.3070000112056732},{"id":"https://openalex.org/C202988678","wikidata":"https://www.wikidata.org/wiki/Q1417986","display_name":"Power dividers and directional couplers","level":2,"score":0.3037000000476837},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.30320000648498535},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.2978000044822693},{"id":"https://openalex.org/C147788027","wikidata":"https://www.wikidata.org/wiki/Q2718101","display_name":"Band-pass filter","level":2,"score":0.2897000014781952},{"id":"https://openalex.org/C120546263","wikidata":"https://www.wikidata.org/wiki/Q162869","display_name":"Circulator","level":2,"score":0.2856999933719635},{"id":"https://openalex.org/C17829176","wikidata":"https://www.wikidata.org/wiki/Q179043","display_name":"Electrical impedance","level":2,"score":0.26510000228881836},{"id":"https://openalex.org/C2983622938","wikidata":"https://www.wikidata.org/wiki/Q1307489","display_name":"Load resistance","level":3,"score":0.26440000534057617},{"id":"https://openalex.org/C63944557","wikidata":"https://www.wikidata.org/wiki/Q27786604","display_name":"C band","level":2,"score":0.2599000036716461},{"id":"https://openalex.org/C165801399","wikidata":"https://www.wikidata.org/wiki/Q25428","display_name":"Voltage","level":2,"score":0.2563000023365021},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.25589999556541443}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/access.2026.3671652","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2026.3671652","pdf_url":null,"source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"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 Access","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:5c19c957bc1d4d338ea5320a9243080f","is_oa":true,"landing_page_url":"https://doaj.org/article/5c19c957bc1d4d338ea5320a9243080f","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"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":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Access, Vol 14, Pp 39821-39829 (2026)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1109/access.2026.3671652","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2026.3671652","pdf_url":null,"source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"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 Access","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.8722634315490723,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[{"id":"https://openalex.org/G4053461453","display_name":null,"funder_award_id":"RS2025-24312971","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"}],"funders":[{"id":"https://openalex.org/F4320322120","display_name":"National Research Foundation of Korea","ror":"https://ror.org/013aysd81"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":26,"referenced_works":["https://openalex.org/W1548497757","https://openalex.org/W2060913556","https://openalex.org/W2141384495","https://openalex.org/W2150584057","https://openalex.org/W2537093914","https://openalex.org/W2763426786","https://openalex.org/W2912165130","https://openalex.org/W2917902422","https://openalex.org/W3011253025","https://openalex.org/W3032644561","https://openalex.org/W3165206712","https://openalex.org/W3181004363","https://openalex.org/W3198555498","https://openalex.org/W3203755237","https://openalex.org/W4213083061","https://openalex.org/W4226188768","https://openalex.org/W4226476627","https://openalex.org/W4285149014","https://openalex.org/W4285150876","https://openalex.org/W4380451005","https://openalex.org/W4386363046","https://openalex.org/W4391935988","https://openalex.org/W4394939111","https://openalex.org/W4402389241","https://openalex.org/W4404628206","https://openalex.org/W4409640690"],"related_works":[],"abstract_inverted_index":{"In":[0],"this":[1],"work,":[2],"a":[3,43,101,109,191],"concurrent":[4,117,232],"dual":[5,118,233],"band":[6,55,119,234],"GaN":[7,104],"power":[8,142,151,200],"amplifier":[9],"(PA)":[10],"employing":[11],"coupler":[12,63,77],"based":[13],"diplexer":[14],"is":[15,28,65,114,143,215],"presented":[16],"for":[17,147,230],"sub":[18],"6":[19],"GHz":[20,158,163],"5G":[21],"applications.":[22],"An":[23],"asymmetrically":[24],"loaded":[25],"coupled":[26],"line":[27],"analyzed":[29],"using":[30],"even-odd":[31],"mode":[32],"decomposition":[33],"and":[34,78,85,94,113,128,134,159,177,186,227],"exploited":[35],"as":[36],"an":[37,79],"impedance":[38],"transformer":[39],"that":[40,218],"also":[41],"generates":[42],"frequency-selective":[44],"virtual":[45],"short":[46],"at":[47,92,131,156,161],"the":[48,68,76,83,89,132,139,181,184,197,219],"low":[49,133,185],"band,":[50],"thereby":[51],"providing":[52],"high":[53,135,187,223],"cross":[54],"isolation":[56],"without":[57],"additional":[58],"rejection":[59],"circuitry.":[60],"The":[61,97,121],"same":[62],"concept":[64],"applied":[66],"to":[67,207],"output":[69,141],"matching":[70],"network,":[71],"where":[72],"geometric":[73],"tuning":[74],"of":[75,154],"open":[80],"stub":[81],"steers":[82],"fundamental":[84],"harmonic":[86],"impedances":[87],"toward":[88],"load-pull":[90],"optima":[91],"3.48":[93,157],"4.93":[95,162],"GHz.":[96],"prototype":[98],"PA":[99],"uses":[100],"single":[102],"CGHV1J006D":[103],"HEMT":[105],"die":[106],"mounted":[107],"on":[108],"Rogers":[110],"5880":[111],"substrate":[112],"characterized":[115],"under":[116],"operation.":[120],"measured":[122],"small-signal":[123],"gains":[124],"are":[125,164],"16.53":[126],"dB":[127,130,176,179],"14.29":[129],"bands,":[136,188],"respectively,":[137],"while":[138],"saturated":[140],"about":[144],"38":[145],"dBm":[146],"both":[148],"bands.":[149],"Peak":[150],"added":[152],"efficiencies":[153],"50.98%":[155],"42.4%":[160],"achieved.":[165],"Two-tone":[166],"measurements":[167],"with":[168],"10":[169],"MHz":[170,193],"spacing":[171],"demonstrate":[172],"intermodulation":[173],"products":[174],"21.97":[175],"25.56":[178],"below":[180],"fundamentals":[182],"in":[183],"respectively.":[189],"With":[190],"20":[192],"LTE":[194],"16-QAM":[195],"signal,":[196],"adjacent":[198],"channel":[199],"ratio":[201],"improves":[202],"from":[203],"approximately":[204],"-30":[205],"dBc":[206,211],"better":[208],"than":[209],"-45":[210],"when":[212],"digital":[213],"predistortion":[214],"applied,":[216],"confirming":[217],"proposed":[220],"architecture":[221],"offers":[222],"efficiency,":[224],"strong":[225],"isolation,":[226],"good":[228],"linearity":[229],"compact":[231],"transmitters.":[235]},"counts_by_year":[],"updated_date":"2026-03-20T20:47:17.329874","created_date":"2026-03-08T00:00:00"}