{"id":"https://openalex.org/W4285191925","doi":"https://doi.org/10.1587/elex.19.20220248","title":"Ultra-broadband high efficiency class-EFJ power amplifier with a compact coupling matching structure","display_name":"Ultra-broadband high efficiency class-EFJ power amplifier with a compact coupling matching structure","publication_year":2022,"publication_date":"2022-06-26","ids":{"openalex":"https://openalex.org/W4285191925","doi":"https://doi.org/10.1587/elex.19.20220248"},"language":"en","primary_location":{"id":"doi:10.1587/elex.19.20220248","is_oa":true,"landing_page_url":"https://doi.org/10.1587/elex.19.20220248","pdf_url":"https://www.jstage.jst.go.jp/article/elex/19/14/19_19.20220248/_pdf","source":{"id":"https://openalex.org/S207433681","display_name":"IEICE Electronics Express","issn_l":"1349-2543","issn":["1349-2543","1349-9467"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4320800604","host_organization_name":"Institute of Electronics, Information and Communication Engineers","host_organization_lineage":["https://openalex.org/P4320800604"],"host_organization_lineage_names":["Institute of Electronics, Information and Communication Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEICE Electronics Express","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://www.jstage.jst.go.jp/article/elex/19/14/19_19.20220248/_pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5077665956","display_name":"Minshi Jia","orcid":"https://orcid.org/0009-0005-4204-7776"},"institutions":[{"id":"https://openalex.org/I50760025","display_name":"Hangzhou Dianzi University","ror":"https://ror.org/0576gt767","country_code":"CN","type":"education","lineage":["https://openalex.org/I50760025"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Minshi Jia","raw_affiliation_strings":["Key Lab of RF Circuit and System of Ministry of Education, Hangzhou Dianzi University","Nokia Solutions and networks System Technology (Beijing) Co., Ltd"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Key Lab of RF Circuit and System of Ministry of Education, Hangzhou Dianzi University","institution_ids":["https://openalex.org/I50760025"]},{"raw_affiliation_string":"Nokia Solutions and networks System Technology (Beijing) Co., Ltd","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5042359537","display_name":"Zhiqun Cheng","orcid":"https://orcid.org/0000-0003-4363-4735"},"institutions":[{"id":"https://openalex.org/I50760025","display_name":"Hangzhou Dianzi University","ror":"https://ror.org/0576gt767","country_code":"CN","type":"education","lineage":["https://openalex.org/I50760025"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhiqun Cheng","raw_affiliation_strings":["Key Lab of RF Circuit and System of Ministry of Education, Hangzhou Dianzi University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Key Lab of RF Circuit and System of Ministry of Education, Hangzhou Dianzi University","institution_ids":["https://openalex.org/I50760025"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5038775837","display_name":"Yongre Shi","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Yongre Shi","raw_affiliation_strings":["Nokia Solutions and networks System Technology (Beijing) Co., Ltd"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Nokia Solutions and networks System Technology (Beijing) Co., Ltd","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100380135","display_name":"Guohua Liu","orcid":"https://orcid.org/0000-0001-5425-2738"},"institutions":[{"id":"https://openalex.org/I50760025","display_name":"Hangzhou Dianzi University","ror":"https://ror.org/0576gt767","country_code":"CN","type":"education","lineage":["https://openalex.org/I50760025"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Guohua Liu","raw_affiliation_strings":["Key Lab of RF Circuit and System of Ministry of Education, Hangzhou Dianzi University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Key Lab of RF Circuit and System of Ministry of Education, Hangzhou Dianzi University","institution_ids":["https://openalex.org/I50760025"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5073200581","display_name":"Xiaomei Zhao","orcid":null},"institutions":[{"id":"https://openalex.org/I50760025","display_name":"Hangzhou Dianzi University","ror":"https://ror.org/0576gt767","country_code":"CN","type":"education","lineage":["https://openalex.org/I50760025"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiaomei Zhao","raw_affiliation_strings":["Key Lab of RF Circuit and System of Ministry of Education, Hangzhou Dianzi University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Key Lab of RF Circuit and System of Ministry of Education, Hangzhou Dianzi University","institution_ids":["https://openalex.org/I50760025"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100455126","display_name":"Hang Li","orcid":"https://orcid.org/0000-0001-9993-4986"},"institutions":[{"id":"https://openalex.org/I50760025","display_name":"Hangzhou Dianzi University","ror":"https://ror.org/0576gt767","country_code":"CN","type":"education","lineage":["https://openalex.org/I50760025"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Hang Li","raw_affiliation_strings":["Key Lab of RF Circuit and System of Ministry of Education, Hangzhou Dianzi University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Key Lab of RF Circuit and System of Ministry of Education, Hangzhou Dianzi University","institution_ids":["https://openalex.org/I50760025"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100347587","display_name":"Zhiwei Zhang","orcid":"https://orcid.org/0000-0001-7202-0084"},"institutions":[{"id":"https://openalex.org/I50760025","display_name":"Hangzhou Dianzi University","ror":"https://ror.org/0576gt767","country_code":"CN","type":"education","lineage":["https://openalex.org/I50760025"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhiwei Zhang","raw_affiliation_strings":["Key Lab of RF Circuit and System of Ministry of Education, Hangzhou Dianzi University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Key Lab of RF Circuit and System of Ministry of Education, Hangzhou Dianzi University","institution_ids":["https://openalex.org/I50760025"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":7,"corresponding_author_ids":["https://openalex.org/A5077665956"],"corresponding_institution_ids":["https://openalex.org/I50760025"],"apc_list":null,"apc_paid":null,"fwci":0.0924,"has_fulltext":true,"cited_by_count":1,"citation_normalized_percentile":{"value":0.39717714,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"19","issue":"14","first_page":"20220248","last_page":"20220248"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11248","display_name":"Advanced Power Amplifier 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/T11248","display_name":"Advanced Power Amplifier 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/T10187","display_name":"Radio Frequency Integrated Circuit Design","score":0.9991000294685364,"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/T11249","display_name":"Wireless Power Transfer Systems","score":0.9948999881744385,"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/impedance-matching","display_name":"Impedance matching","score":0.6516788005828857},{"id":"https://openalex.org/keywords/amplifier","display_name":"Amplifier","score":0.6150184869766235},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.605947732925415},{"id":"https://openalex.org/keywords/broadband","display_name":"Broadband","score":0.535029411315918},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.511877179145813},{"id":"https://openalex.org/keywords/power-added-efficiency","display_name":"Power-added efficiency","score":0.46200650930404663},{"id":"https://openalex.org/keywords/output-impedance","display_name":"Output impedance","score":0.4502128064632416},{"id":"https://openalex.org/keywords/electrical-impedance","display_name":"Electrical impedance","score":0.43758058547973633},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.41183698177337646},{"id":"https://openalex.org/keywords/miniaturization","display_name":"Miniaturization","score":0.4117990732192993},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.36458444595336914},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.3612736463546753},{"id":"https://openalex.org/keywords/rf-power-amplifier","display_name":"RF power amplifier","score":0.359880268573761},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.16878345608711243}],"concepts":[{"id":"https://openalex.org/C612350","wikidata":"https://www.wikidata.org/wiki/Q1761108","display_name":"Impedance matching","level":3,"score":0.6516788005828857},{"id":"https://openalex.org/C194257627","wikidata":"https://www.wikidata.org/wiki/Q211554","display_name":"Amplifier","level":3,"score":0.6150184869766235},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.605947732925415},{"id":"https://openalex.org/C509933004","wikidata":"https://www.wikidata.org/wiki/Q194163","display_name":"Broadband","level":2,"score":0.535029411315918},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.511877179145813},{"id":"https://openalex.org/C129231560","wikidata":"https://www.wikidata.org/wiki/Q7236462","display_name":"Power-added efficiency","level":5,"score":0.46200650930404663},{"id":"https://openalex.org/C58112919","wikidata":"https://www.wikidata.org/wiki/Q631203","display_name":"Output impedance","level":3,"score":0.4502128064632416},{"id":"https://openalex.org/C17829176","wikidata":"https://www.wikidata.org/wiki/Q179043","display_name":"Electrical impedance","level":2,"score":0.43758058547973633},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.41183698177337646},{"id":"https://openalex.org/C57528182","wikidata":"https://www.wikidata.org/wiki/Q1271842","display_name":"Miniaturization","level":2,"score":0.4117990732192993},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.36458444595336914},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.3612736463546753},{"id":"https://openalex.org/C196054291","wikidata":"https://www.wikidata.org/wiki/Q7276624","display_name":"RF power amplifier","level":4,"score":0.359880268573761},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.16878345608711243}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1587/elex.19.20220248","is_oa":true,"landing_page_url":"https://doi.org/10.1587/elex.19.20220248","pdf_url":"https://www.jstage.jst.go.jp/article/elex/19/14/19_19.20220248/_pdf","source":{"id":"https://openalex.org/S207433681","display_name":"IEICE Electronics Express","issn_l":"1349-2543","issn":["1349-2543","1349-9467"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4320800604","host_organization_name":"Institute of Electronics, Information and Communication Engineers","host_organization_lineage":["https://openalex.org/P4320800604"],"host_organization_lineage_names":["Institute of Electronics, Information and Communication Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEICE Electronics Express","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1587/elex.19.20220248","is_oa":true,"landing_page_url":"https://doi.org/10.1587/elex.19.20220248","pdf_url":"https://www.jstage.jst.go.jp/article/elex/19/14/19_19.20220248/_pdf","source":{"id":"https://openalex.org/S207433681","display_name":"IEICE Electronics Express","issn_l":"1349-2543","issn":["1349-2543","1349-9467"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4320800604","host_organization_name":"Institute of Electronics, Information and Communication Engineers","host_organization_lineage":["https://openalex.org/P4320800604"],"host_organization_lineage_names":["Institute of Electronics, Information and Communication Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEICE Electronics Express","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.8600000143051147,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[{"id":"https://openalex.org/G6924275907","display_name":null,"funder_award_id":"LY22F010003","funder_id":"https://openalex.org/F4320338464","funder_display_name":"Natural Science Foundation of Zhejiang Province"},{"id":"https://openalex.org/G8056188898","display_name":null,"funder_award_id":"LZ20F010004","funder_id":"https://openalex.org/F4320338464","funder_display_name":"Natural Science Foundation of Zhejiang Province"},{"id":"https://openalex.org/G8516855668","display_name":null,"funder_award_id":"Grant LZ20F010004","funder_id":"https://openalex.org/F4320338464","funder_display_name":"Natural Science Foundation of Zhejiang Province"}],"funders":[{"id":"https://openalex.org/F4320338464","display_name":"Natural Science Foundation of Zhejiang Province","ror":"https://ror.org/01h0zpd94"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4285191925.pdf","grobid_xml":"https://content.openalex.org/works/W4285191925.grobid-xml"},"referenced_works_count":36,"referenced_works":["https://openalex.org/W1975889039","https://openalex.org/W1976714433","https://openalex.org/W1978617137","https://openalex.org/W1989434330","https://openalex.org/W2009341850","https://openalex.org/W2012388532","https://openalex.org/W2012495293","https://openalex.org/W2024157607","https://openalex.org/W2066882858","https://openalex.org/W2071659588","https://openalex.org/W2082374036","https://openalex.org/W2142285193","https://openalex.org/W2165594312","https://openalex.org/W2419120981","https://openalex.org/W2488433103","https://openalex.org/W2558920874","https://openalex.org/W2601944238","https://openalex.org/W2618206860","https://openalex.org/W2726128612","https://openalex.org/W2752629742","https://openalex.org/W2774014445","https://openalex.org/W2783832420","https://openalex.org/W2890937071","https://openalex.org/W2910883813","https://openalex.org/W2913212278","https://openalex.org/W2922404134","https://openalex.org/W2941590321","https://openalex.org/W2942895062","https://openalex.org/W2980255320","https://openalex.org/W2996208664","https://openalex.org/W2998766480","https://openalex.org/W3007058678","https://openalex.org/W3009558722","https://openalex.org/W3018154587","https://openalex.org/W3093811481","https://openalex.org/W4285181610"],"related_works":["https://openalex.org/W2899084033","https://openalex.org/W1989581869","https://openalex.org/W147564418","https://openalex.org/W2540318259","https://openalex.org/W2004588295","https://openalex.org/W4236532602","https://openalex.org/W141098887","https://openalex.org/W2598119892","https://openalex.org/W3091288614","https://openalex.org/W2513668618"],"abstract_inverted_index":{"This":[0,50],"paper":[1],"presents":[2],"a":[3,10,26,90,109,125,137],"multi-octave":[4,126],"class-EFJ":[5,47],"power":[6,48,148],"amplifier":[7],"based":[8],"on":[9],"compact":[11,15,31],"coupling":[12,16,32,51],"structure.":[13],"The":[14,30,141],"structure":[17,33,52,123],"derives":[18],"the":[19,35,42,46,55,59,65,71,80,83,87,97,101,103,121,146,154],"output":[20,36,147],"matching":[21,37,67,105,117],"network":[22,106],"impedance":[23,38,43,62,111],"which":[24],"is":[25,107,132],"simplified":[27],"T-type":[28],"network.":[29],"reduces":[34],"range":[39],"to":[40,95,151],"meet":[41,54,79],"requirement":[44,81],"of":[45,58,82,149,157],"amplifier.":[49],"can":[53,78],"design":[56,73,76],"space":[57],"optimal":[60],"fundamental":[61],"and":[63,85,99,112,128,134,153],"control":[64],"harmonic":[66],"impedance.":[68],"Compared":[69],"with":[70,136],"traditional":[72],"method,":[74],"this":[75],"method":[77],"miniaturization":[84],"improve":[86,96],"efficiency":[88,98,130,156],"in":[89],"wide":[91],"bandwidth.":[92],"In":[93],"order":[94],"broaden":[100],"bandwidth,":[102],"input":[104],"used":[108],"stepped":[110],"open":[113],"circuit":[114],"microwave":[115],"line":[116],"method.":[118],"To":[119],"verify":[120],"proposed":[122],"effectiveness,":[124],"bandwidth":[127],"high":[129],"PA":[131],"designed":[133],"fabricated":[135],"GaN":[138],"HEMT":[139],"CGH40010F.":[140],"measured":[142],"results":[143],"show":[144],"that":[145],"40.2dBm":[150],"42.9dBm":[152],"drain":[155],"62.8%-72.4%":[158],"are":[159],"achieved":[160],"at":[161],"0.9GHz-3.4GHz,":[162],"respectively.":[163]},"counts_by_year":[{"year":2022,"cited_by_count":1}],"updated_date":"2026-05-05T08:41:31.759640","created_date":"2025-10-10T00:00:00"}