{"id":"https://openalex.org/W4409207458","doi":"https://doi.org/10.1002/cta.4552","title":"All\u2010Port\u2010Reflectionless Planar Wideband Filtering Directional Coupler Using Two Groups of Four\u2010Coupled\u2010Lines","display_name":"All\u2010Port\u2010Reflectionless Planar Wideband Filtering Directional Coupler Using Two Groups of Four\u2010Coupled\u2010Lines","publication_year":2025,"publication_date":"2025-04-07","ids":{"openalex":"https://openalex.org/W4409207458","doi":"https://doi.org/10.1002/cta.4552"},"language":"en","primary_location":{"id":"doi:10.1002/cta.4552","is_oa":true,"landing_page_url":"https://doi.org/10.1002/cta.4552","pdf_url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/cta.4552","source":{"id":"https://openalex.org/S92132303","display_name":"International Journal of Circuit Theory and Applications","issn_l":"0098-9886","issn":["0098-9886","1097-007X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Circuit Theory and Applications","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/cta.4552","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5035499713","display_name":"Yan Zhang","orcid":"https://orcid.org/0000-0001-8484-6596"},"institutions":[{"id":"https://openalex.org/I43313876","display_name":"Dalian Maritime University","ror":"https://ror.org/002b7nr53","country_code":"CN","type":"education","lineage":["https://openalex.org/I43313876"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yan Zhang","raw_affiliation_strings":["School of Information Science and Technology Dalian Maritime University  Dalian China"],"affiliations":[{"raw_affiliation_string":"School of Information Science and Technology Dalian Maritime University  Dalian China","institution_ids":["https://openalex.org/I43313876"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100377003","display_name":"Hongmei Liu","orcid":"https://orcid.org/0000-0002-3834-4533"},"institutions":[{"id":"https://openalex.org/I43313876","display_name":"Dalian Maritime University","ror":"https://ror.org/002b7nr53","country_code":"CN","type":"education","lineage":["https://openalex.org/I43313876"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Hongmei Liu","raw_affiliation_strings":["School of Information Science and Technology Dalian Maritime University  Dalian China"],"affiliations":[{"raw_affiliation_string":"School of Information Science and Technology Dalian Maritime University  Dalian China","institution_ids":["https://openalex.org/I43313876"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5087439788","display_name":"Shuo Li","orcid":"https://orcid.org/0000-0003-4986-6852"},"institutions":[{"id":"https://openalex.org/I43313876","display_name":"Dalian Maritime University","ror":"https://ror.org/002b7nr53","country_code":"CN","type":"education","lineage":["https://openalex.org/I43313876"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shuo Li","raw_affiliation_strings":["School of Information Science and Technology Dalian Maritime University  Dalian China"],"affiliations":[{"raw_affiliation_string":"School of Information Science and Technology Dalian Maritime University  Dalian China","institution_ids":["https://openalex.org/I43313876"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108063887","display_name":"Zhongbao Wang","orcid":"https://orcid.org/0000-0003-4665-124X"},"institutions":[{"id":"https://openalex.org/I43313876","display_name":"Dalian Maritime University","ror":"https://ror.org/002b7nr53","country_code":"CN","type":"education","lineage":["https://openalex.org/I43313876"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhongbao Wang","raw_affiliation_strings":["School of Information Science and Technology Dalian Maritime University  Dalian China"],"affiliations":[{"raw_affiliation_string":"School of Information Science and Technology Dalian Maritime University  Dalian China","institution_ids":["https://openalex.org/I43313876"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5110364867","display_name":"Fang Shao-jun","orcid":null},"institutions":[{"id":"https://openalex.org/I43313876","display_name":"Dalian Maritime University","ror":"https://ror.org/002b7nr53","country_code":"CN","type":"education","lineage":["https://openalex.org/I43313876"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shaojun Fang","raw_affiliation_strings":["School of Information Science and Technology Dalian Maritime University  Dalian China"],"affiliations":[{"raw_affiliation_string":"School of Information Science and Technology Dalian Maritime University  Dalian China","institution_ids":["https://openalex.org/I43313876"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5100377003"],"corresponding_institution_ids":["https://openalex.org/I43313876"],"apc_list":{"value":3660,"currency":"USD","value_usd":3660},"apc_paid":null,"fwci":1.4625,"has_fulltext":true,"cited_by_count":2,"citation_normalized_percentile":{"value":0.81670428,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":95,"max":96},"biblio":{"volume":"53","issue":"12","first_page":"6920","last_page":"6928"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10262","display_name":"Microwave Engineering and Waveguides","score":0.9998999834060669,"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/T10262","display_name":"Microwave Engineering and Waveguides","score":0.9998999834060669,"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/T11946","display_name":"Antenna Design and Optimization","score":0.9994000196456909,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace 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/T11383","display_name":"Advanced Antenna and Metasurface Technologies","score":0.9987999796867371,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace 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/wideband","display_name":"Wideband","score":0.7924413084983826},{"id":"https://openalex.org/keywords/planar","display_name":"Planar","score":0.7667529582977295},{"id":"https://openalex.org/keywords/hybrid-coupler","display_name":"Hybrid coupler","score":0.7199254631996155},{"id":"https://openalex.org/keywords/power-dividers-and-directional-couplers","display_name":"Power dividers and directional couplers","score":0.7174081802368164},{"id":"https://openalex.org/keywords/port","display_name":"Port (circuit theory)","score":0.715991735458374},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.4312414824962616},{"id":"https://openalex.org/keywords/topology","display_name":"Topology (electrical circuits)","score":0.4234086871147156},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.3582197427749634},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.35632064938545227},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.3482690751552582},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.34325361251831055},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.3356204628944397},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.33201634883880615},{"id":"https://openalex.org/keywords/computer-graphics","display_name":"Computer graphics (images)","score":0.061421751976013184}],"concepts":[{"id":"https://openalex.org/C2780202535","wikidata":"https://www.wikidata.org/wiki/Q4524457","display_name":"Wideband","level":2,"score":0.7924413084983826},{"id":"https://openalex.org/C134786449","wikidata":"https://www.wikidata.org/wiki/Q3391255","display_name":"Planar","level":2,"score":0.7667529582977295},{"id":"https://openalex.org/C80185135","wikidata":"https://www.wikidata.org/wiki/Q1417986","display_name":"Hybrid coupler","level":3,"score":0.7199254631996155},{"id":"https://openalex.org/C202988678","wikidata":"https://www.wikidata.org/wiki/Q1417986","display_name":"Power dividers and directional couplers","level":2,"score":0.7174081802368164},{"id":"https://openalex.org/C32802771","wikidata":"https://www.wikidata.org/wiki/Q2443617","display_name":"Port (circuit theory)","level":2,"score":0.715991735458374},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.4312414824962616},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.4234086871147156},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.3582197427749634},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.35632064938545227},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.3482690751552582},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.34325361251831055},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.3356204628944397},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.33201634883880615},{"id":"https://openalex.org/C121684516","wikidata":"https://www.wikidata.org/wiki/Q7600677","display_name":"Computer graphics (images)","level":1,"score":0.061421751976013184}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1002/cta.4552","is_oa":true,"landing_page_url":"https://doi.org/10.1002/cta.4552","pdf_url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/cta.4552","source":{"id":"https://openalex.org/S92132303","display_name":"International Journal of Circuit Theory and Applications","issn_l":"0098-9886","issn":["0098-9886","1097-007X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Circuit Theory and Applications","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1002/cta.4552","is_oa":true,"landing_page_url":"https://doi.org/10.1002/cta.4552","pdf_url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/cta.4552","source":{"id":"https://openalex.org/S92132303","display_name":"International Journal of Circuit Theory and Applications","issn_l":"0098-9886","issn":["0098-9886","1097-007X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Circuit Theory and Applications","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1121271761","display_name":null,"funder_award_id":"Program","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G1231421488","display_name":null,"funder_award_id":"under","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G162595793","display_name":null,"funder_award_id":"313202","funder_id":"https://openalex.org/F4320335787","funder_display_name":"Fundamental Research Funds for the Central Universities"},{"id":"https://openalex.org/G2087396116","display_name":null,"funder_award_id":"China","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G2376276132","display_name":null,"funder_award_id":"China","funder_id":"https://openalex.org/F4320335787","funder_display_name":"Fundamental Research Funds for the Central Universities"},{"id":"https://openalex.org/G2802911279","display_name":null,"funder_award_id":"Young","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G3317480652","display_name":null,"funder_award_id":"Science","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G391238517","display_name":null,"funder_award_id":", and","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G52670060","display_name":null,"funder_award_id":"3132024239","funder_id":"https://openalex.org/F4320335787","funder_display_name":"Fundamental Research Funds for the Central Universities"},{"id":"https://openalex.org/G5994120800","display_name":null,"funder_award_id":"Natural","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6131356197","display_name":null,"funder_award_id":"52471371","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6259247475","display_name":null,"funder_award_id":"2022QNRC001","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6574784928","display_name":null,"funder_award_id":"202406570025","funder_id":"https://openalex.org/F4320322725","funder_display_name":"China Scholarship Council"},{"id":"https://openalex.org/G6614641478","display_name":null,"funder_award_id":"2022QNRC001","funder_id":"https://openalex.org/F4320335787","funder_display_name":"Fundamental Research Funds for the Central Universities"},{"id":"https://openalex.org/G8589651859","display_name":null,"funder_award_id":"China","funder_id":"https://openalex.org/F4320322725","funder_display_name":"China Scholarship Council"},{"id":"https://openalex.org/G8714109953","display_name":null,"funder_award_id":"QNRC001","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G8951484681","display_name":null,"funder_award_id":"Grant","funder_id":"https://openalex.org/F4320335787","funder_display_name":"Fundamental Research Funds for the Central Universities"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320322725","display_name":"China Scholarship Council","ror":"https://ror.org/04atp4p48"},{"id":"https://openalex.org/F4320335787","display_name":"Fundamental Research Funds for the Central Universities","ror":null}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4409207458.pdf","grobid_xml":"https://content.openalex.org/works/W4409207458.grobid-xml"},"referenced_works_count":23,"referenced_works":["https://openalex.org/W2091104162","https://openalex.org/W2093491894","https://openalex.org/W2248796233","https://openalex.org/W2801789510","https://openalex.org/W2884153430","https://openalex.org/W2891848723","https://openalex.org/W2899536473","https://openalex.org/W2923476361","https://openalex.org/W2961201985","https://openalex.org/W2970033117","https://openalex.org/W2982242004","https://openalex.org/W2998330410","https://openalex.org/W3005872962","https://openalex.org/W3018282054","https://openalex.org/W3097904817","https://openalex.org/W3168695840","https://openalex.org/W3179191205","https://openalex.org/W3194747276","https://openalex.org/W4212929866","https://openalex.org/W4213209589","https://openalex.org/W4285163745","https://openalex.org/W4387717461","https://openalex.org/W4401454166"],"related_works":["https://openalex.org/W2161945183","https://openalex.org/W2382532184","https://openalex.org/W2016108268","https://openalex.org/W2011132542","https://openalex.org/W1995492092","https://openalex.org/W2811300416","https://openalex.org/W2055176979","https://openalex.org/W2166881591","https://openalex.org/W2167835150","https://openalex.org/W2029783036"],"abstract_inverted_index":{"ABSTRACT":[0],"In":[1],"the":[2,29,34,39,43,52,57,62,85,89,120,123,130,138,149,167,176],"paper,":[3],"a":[4,98],"planar":[5],"wideband":[6,46],"filtering":[7],"directional":[8],"coupler":[9,41],"(FDC)":[10],"with":[11,31,42,54,76],"all\u2010port\u2010reflectionless":[12,124],"behavior":[13,66],"is":[14,28,51,104,147,172],"presented":[15],"by":[16],"merely":[17],"using":[18],"two":[19,77],"groups":[20],"of":[21,45,88,126,133,141,154],"four\u2010coupled\u2010lines":[22],"(FCLs)":[23],"and":[24,91,106,137],"resistors.":[25,78],"One":[26],"group":[27,50],"FCL":[30,53],"open\u2010circuited":[32],"at":[33,56,67,101],"diagonal":[35],"terminals,":[36],"which":[37,171],"forms":[38],"quadrature":[40],"feature":[44],"filtering.":[47],"The":[48],"other":[49],"connection":[55],"adjacent":[58],"ports":[59,69],"to":[60,166],"construct":[61],"resonator.":[63],"Wideband":[64],"reflectionless":[65,169],"all":[68],"can":[70],"be":[71],"achieved":[72],"when":[73,164],"it":[74,146],"cooperates":[75],"Design":[79],"equations":[80],"are":[81,94],"derived":[82],"based":[83],"on":[84,113],"Z":[86],"\u2010matrix":[87],"FCL,":[90],"parameter":[92],"investigations":[93],"performed.":[95],"For":[96],"validation,":[97],"prototype":[99,121],"operating":[100],"2":[102],"GHz":[103],"modeled":[105],"optimized":[107],"in":[108],"Ansoft":[109],"HFSS,":[110],"then":[111],"fabricated":[112],"Rogers":[114],"4350b.":[115],"Measurement":[116],"results":[117],"indicate":[118],"that":[119],"exhibits":[122],"bandwidth":[125,132],"more":[127],"than":[128,135],"320%,":[129],"passband":[131],"larger":[134],"70%,":[136],"stopband":[139],"rejection":[140],"over":[142],"19":[143],"dB.":[144],"Moreover,":[145],"also":[148],"smallest":[150],"(occupying":[151],"an":[152],"area":[153],"only":[155],"0.27":[156],"\u03bb":[157,161],"g":[158,162],"\u00d7":[159],"0.11":[160],")":[163],"compared":[165],"state\u2010of\u2010the\u2010art":[168],"FDCs,":[170],"rather":[173],"suitable":[174],"for":[175],"highly":[177],"integrated":[178],"communication":[179],"system":[180],"applications.":[181]},"counts_by_year":[{"year":2025,"cited_by_count":2}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}
