{"id":"https://openalex.org/W4322705849","doi":"https://doi.org/10.1109/access.2023.3247137","title":"Design of Compact Quasi-Elliptic Bandpass Filters Based on Coaxial Inset Resonators","display_name":"Design of Compact Quasi-Elliptic Bandpass Filters Based on Coaxial Inset Resonators","publication_year":2023,"publication_date":"2023-01-01","ids":{"openalex":"https://openalex.org/W4322705849","doi":"https://doi.org/10.1109/access.2023.3247137"},"language":"en","primary_location":{"id":"doi:10.1109/access.2023.3247137","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2023.3247137","pdf_url":"https://ieeexplore.ieee.org/ielx7/6287639/10005208/10049443.pdf","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":"other-oa","license_id":"https://openalex.org/licenses/other-oa","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://ieeexplore.ieee.org/ielx7/6287639/10005208/10049443.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5076098508","display_name":"Abdulrahman Widaa","orcid":"https://orcid.org/0000-0003-4971-8569"},"institutions":[{"id":"https://openalex.org/I32021983","display_name":"Kiel University","ror":"https://ror.org/04v76ef78","country_code":"DE","type":"education","lineage":["https://openalex.org/I32021983"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Abdulrahman Widaa","raw_affiliation_strings":["Chair of Microwave Engineering, Kiel University, Kiel, Germany"],"affiliations":[{"raw_affiliation_string":"Chair of Microwave Engineering, Kiel University, Kiel, Germany","institution_ids":["https://openalex.org/I32021983"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5035985618","display_name":"Chad Bartlett","orcid":"https://orcid.org/0000-0003-3876-9889"},"institutions":[{"id":"https://openalex.org/I32021983","display_name":"Kiel University","ror":"https://ror.org/04v76ef78","country_code":"DE","type":"education","lineage":["https://openalex.org/I32021983"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Chad Bartlett","raw_affiliation_strings":["Chair of Microwave Engineering, Kiel University, Kiel, Germany"],"affiliations":[{"raw_affiliation_string":"Chair of Microwave Engineering, Kiel University, Kiel, Germany","institution_ids":["https://openalex.org/I32021983"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5034236393","display_name":"Michael H\u00f6ft","orcid":"https://orcid.org/0000-0001-9352-2868"},"institutions":[{"id":"https://openalex.org/I32021983","display_name":"Kiel University","ror":"https://ror.org/04v76ef78","country_code":"DE","type":"education","lineage":["https://openalex.org/I32021983"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Michael H\u00f6ft","raw_affiliation_strings":["Chair of Microwave Engineering, Kiel University, Kiel, Germany"],"affiliations":[{"raw_affiliation_string":"Chair of Microwave Engineering, Kiel University, Kiel, Germany","institution_ids":["https://openalex.org/I32021983"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5076098508"],"corresponding_institution_ids":["https://openalex.org/I32021983"],"apc_list":{"value":1850,"currency":"USD","value_usd":1850},"apc_paid":{"value":1850,"currency":"USD","value_usd":1850},"fwci":0.6574,"has_fulltext":true,"cited_by_count":5,"citation_normalized_percentile":{"value":0.66883196,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":97},"biblio":{"volume":"11","issue":null,"first_page":"18739","last_page":"18749"},"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/T10069","display_name":"Antenna Design and Analysis","score":0.9764000177383423,"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/T12791","display_name":"Full-Duplex Wireless Communications","score":0.9660000205039978,"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/resonator","display_name":"Resonator","score":0.8327939510345459},{"id":"https://openalex.org/keywords/band-pass-filter","display_name":"Band-pass filter","score":0.670535147190094},{"id":"https://openalex.org/keywords/insertion-loss","display_name":"Insertion loss","score":0.5377317667007446},{"id":"https://openalex.org/keywords/coaxial","display_name":"Coaxial","score":0.49909114837646484},{"id":"https://openalex.org/keywords/filter","display_name":"Filter (signal processing)","score":0.49843907356262207},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.49410250782966614},{"id":"https://openalex.org/keywords/helical-resonator","display_name":"Helical resonator","score":0.4535965323448181},{"id":"https://openalex.org/keywords/topology","display_name":"Topology (electrical circuits)","score":0.4385386109352112},{"id":"https://openalex.org/keywords/spurious-relationship","display_name":"Spurious relationship","score":0.4116829037666321},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.32739943265914917},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.27825814485549927},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.2659037411212921},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.2484056055545807},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.2127625048160553},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.15110424160957336},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.09276556968688965}],"concepts":[{"id":"https://openalex.org/C97126364","wikidata":"https://www.wikidata.org/wiki/Q349669","display_name":"Resonator","level":2,"score":0.8327939510345459},{"id":"https://openalex.org/C147788027","wikidata":"https://www.wikidata.org/wiki/Q2718101","display_name":"Band-pass filter","level":2,"score":0.670535147190094},{"id":"https://openalex.org/C90327742","wikidata":"https://www.wikidata.org/wiki/Q947396","display_name":"Insertion loss","level":2,"score":0.5377317667007446},{"id":"https://openalex.org/C51221625","wikidata":"https://www.wikidata.org/wiki/Q1751466","display_name":"Coaxial","level":2,"score":0.49909114837646484},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.49843907356262207},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.49410250782966614},{"id":"https://openalex.org/C206493696","wikidata":"https://www.wikidata.org/wiki/Q5704945","display_name":"Helical resonator","level":3,"score":0.4535965323448181},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.4385386109352112},{"id":"https://openalex.org/C97256817","wikidata":"https://www.wikidata.org/wiki/Q1462316","display_name":"Spurious relationship","level":2,"score":0.4116829037666321},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.32739943265914917},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.27825814485549927},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.2659037411212921},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.2484056055545807},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2127625048160553},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.15110424160957336},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.09276556968688965},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1109/access.2023.3247137","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2023.3247137","pdf_url":"https://ieeexplore.ieee.org/ielx7/6287639/10005208/10049443.pdf","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":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},{"id":"pmh:oai:macau.uni-kiel.de:macau_mods_00003424","is_oa":true,"landing_page_url":"https://macau.uni-kiel.de/receive/macau_mods_00003424","pdf_url":"https://macau.uni-kiel.de/servlets/MCRFileNodeServlet/macau_derivate_00004630/Design_of_Compact_Quasi-Elliptic_Bandpass_Filters_Based_on_Coaxial_Inset_Resonators.pdf","source":{"id":"https://openalex.org/S4306402453","display_name":"MACAU: Open Access Repository of Kiel University (University Library Kiel)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I32021983","host_organization_name":"Christian-Albrechts-Universit\u00e4t zu Kiel","host_organization_lineage":["https://openalex.org/I32021983"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"doc-type:Article"},{"id":"pmh:oai:doaj.org/article:08b9e4b0d62d4510b88b572c0de259b9","is_oa":true,"landing_page_url":"https://doaj.org/article/08b9e4b0d62d4510b88b572c0de259b9","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Access, Vol 11, Pp 18739-18749 (2023)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1109/access.2023.3247137","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2023.3247137","pdf_url":"https://ieeexplore.ieee.org/ielx7/6287639/10005208/10049443.pdf","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":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1974542962","display_name":null,"funder_award_id":"Sk\u0142odowska","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G2001806450","display_name":null,"funder_award_id":"H2020-MSCA-ITN","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G2689612763","display_name":null,"funder_award_id":"Marie","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G3246315329","display_name":null,"funder_award_id":"H2020-MSCA-ITN-2018","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G3345895242","display_name":null,"funder_award_id":"H2020-MSCA","funder_id":"https://openalex.org/F4320332999","funder_display_name":"Horizon 2020 Framework Programme"},{"id":"https://openalex.org/G3780809258","display_name":null,"funder_award_id":"Marie Sk\u0142odowska-Curie","funder_id":"https://openalex.org/F4320332999","funder_display_name":"Horizon 2020 Framework Programme"},{"id":"https://openalex.org/G4179202262","display_name":null,"funder_award_id":"811232-H2020-MSCA-ITN-2018","funder_id":"https://openalex.org/F4320332999","funder_display_name":"Horizon 2020 Framework Programme"},{"id":"https://openalex.org/G477545922","display_name":"Advanced Technologies for future European Satellite Applications","funder_award_id":"811232","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G4932298851","display_name":null,"funder_award_id":"MSCA-ITN-2018","funder_id":"https://openalex.org/F4320332999","funder_display_name":"Horizon 2020 Framework Programme"},{"id":"https://openalex.org/G4937468798","display_name":null,"funder_award_id":"H2020","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G6743243744","display_name":null,"funder_award_id":"unknown","funder_id":"https://openalex.org/F4320320879","funder_display_name":"Deutsche Forschungsgemeinschaft"},{"id":"https://openalex.org/G7735027310","display_name":null,"funder_award_id":"H2020-MSCA-ITN-2018","funder_id":"https://openalex.org/F4320332999","funder_display_name":"Horizon 2020 Framework Programme"},{"id":"https://openalex.org/G7984235579","display_name":null,"funder_award_id":"H2020-MSCA-ITN","funder_id":"https://openalex.org/F4320332999","funder_display_name":"Horizon 2020 Framework Programme"},{"id":"https://openalex.org/G8005054536","display_name":null,"funder_award_id":"MSCA-ITN-2018","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G8214900093","display_name":null,"funder_award_id":"811232","funder_id":"https://openalex.org/F4320332999","funder_display_name":"Horizon 2020 Framework Programme"},{"id":"https://openalex.org/G8318064016","display_name":null,"funder_award_id":"Horizon","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G8330397625","display_name":null,"funder_award_id":"Funding","funder_id":"https://openalex.org/F4320320879","funder_display_name":"Deutsche Forschungsgemeinschaft"},{"id":"https://openalex.org/G8512683158","display_name":null,"funder_award_id":"H2020-MSCA","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"}],"funders":[{"id":"https://openalex.org/F4320320300","display_name":"European Commission","ror":"https://ror.org/00k4n6c32"},{"id":"https://openalex.org/F4320320879","display_name":"Deutsche Forschungsgemeinschaft","ror":"https://ror.org/018mejw64"},{"id":"https://openalex.org/F4320332999","display_name":"Horizon 2020 Framework Programme","ror":"https://ror.org/00k4n6c32"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4322705849.pdf","grobid_xml":"https://content.openalex.org/works/W4322705849.grobid-xml"},"referenced_works_count":33,"referenced_works":["https://openalex.org/W2036413334","https://openalex.org/W2063665049","https://openalex.org/W2086150440","https://openalex.org/W2088585785","https://openalex.org/W2091585758","https://openalex.org/W2100429857","https://openalex.org/W2105321747","https://openalex.org/W2106629559","https://openalex.org/W2120779619","https://openalex.org/W2140350000","https://openalex.org/W2142904174","https://openalex.org/W2151878500","https://openalex.org/W2162479495","https://openalex.org/W2314297653","https://openalex.org/W2331524840","https://openalex.org/W2476486963","https://openalex.org/W2499178957","https://openalex.org/W2765165828","https://openalex.org/W2790978019","https://openalex.org/W2808415932","https://openalex.org/W2823225253","https://openalex.org/W2890761913","https://openalex.org/W2944599968","https://openalex.org/W2973524846","https://openalex.org/W3101640295","https://openalex.org/W3132773580","https://openalex.org/W3135393658","https://openalex.org/W4229061238","https://openalex.org/W4240797762","https://openalex.org/W4293868518","https://openalex.org/W4308086277","https://openalex.org/W4312331228","https://openalex.org/W6682177905"],"related_works":["https://openalex.org/W3113091479","https://openalex.org/W2088857717","https://openalex.org/W4388447629","https://openalex.org/W2137242540","https://openalex.org/W2552264029","https://openalex.org/W4389584603","https://openalex.org/W1539734297","https://openalex.org/W2893959967","https://openalex.org/W2009267531","https://openalex.org/W2369757346"],"abstract_inverted_index":{"This":[0],"article":[1],"reports":[2],"a":[3,31,79,104,119,133,141,164,171,179,198],"novel":[4],"inset":[5,21,85],"resonator":[6,22,35,86],"configuration":[7],"for":[8,72],"coaxial":[9,67],"filter":[10,109,117,160,175],"applications":[11],"with":[12,48,110,178],"quasi-elliptic":[13,84,159],"responses.":[14],"The":[15,98,115,156],"design":[16],"and":[17,27,42,51,77,93,140,197],"analysis":[18],"of":[19,65,103,122,170,202],"the":[20,55,63,66,70,101],"are":[23,89],"discussed":[24],"in":[25,46,91,163],"detail":[26],"accurately":[28],"modeled":[29],"as":[30],"capacitively-loaded":[32],"stepped-impedance":[33],"half-wavelength":[34,50],"featuring":[36],"more":[37],"compactness,":[38],"high":[39],"quality":[40,81],"factor,":[41],"enhanced":[43],"spurious":[44],"responses":[45],"comparison":[47],"conventional":[49],"combline":[52],"resonators.":[53],"Additionally,":[54],"operating":[56],"frequency":[57],"can":[58],"be":[59],"tuned":[60],"intrinsically":[61],"through":[62],"displacement":[64],"resonator,":[68],"eliminating":[69],"need":[71],"any":[73],"additional":[74],"tuning":[75],"elements":[76],"maintaining":[78],"stable":[80],"factor.":[82],"Two":[83],"type":[87],"filters":[88],"implemented":[90],"planar":[92],"longitudinal":[94,165],"coupling":[95],"configurations,":[96],"respectively.":[97],"first":[99],"takes":[100],"form":[102],"folded":[105],"four-pole":[106],"2.93":[107],"GHz":[108,173],"two":[111],"symmetrical":[112],"transmission":[113,181],"zeros.":[114],"fabricated":[116],"has":[118],"compact":[120,200],"structure":[121,201],"29.76":[123],"cm":[124],"3,":[125],"an":[126],"insertion":[127],"loss":[128,135],"better":[129,136],"than":[130,137],"0.73":[131],"dB,":[132,139],"return":[134],"18":[138],"wide":[142,183],"spurious-free":[143,184],"band":[144,185],"up":[145],"to":[146],"<inline-formula":[147,187,203],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[148,188,204],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">":[149,189,205],"<tex-math":[150,190,206],"notation=\"LaTeX\">$3.5\\cdot":[151],"f":[152,193],"_{0}$":[153,194],"</tex-math></inline-formula>":[154,195,210],".":[155],"second":[157],"inset-type":[158],"is":[161,176],"realized":[162],"inline":[166],"arrangement.":[167],"An":[168],"example":[169],"2.53":[172],"three-pole":[174],"presented":[177],"closely-positioned":[180],"zero,":[182],"(":[186],"notation=\"LaTeX\">$\\approx":[191],"3\\cdot":[192],"),":[196],"very":[199],"notation=\"LaTeX\">$55.7\\times":[207],"33\\times":[208],"33$":[209],"mm":[211],"3.":[212]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":4}],"updated_date":"2026-03-21T08:13:44.787528","created_date":"2025-10-10T00:00:00"}
