{"id":"https://openalex.org/W4200290693","doi":"https://doi.org/10.1109/tcsii.2021.3139158","title":"A Filtering Balun Utilizing Multi-Ring Loaded Vertical Transition Structure With 161% Fractional Bandwidth and &gt;5.8<i>f</i>\u2080 Stopband","display_name":"A Filtering Balun Utilizing Multi-Ring Loaded Vertical Transition Structure With 161% Fractional Bandwidth and &gt;5.8<i>f</i>\u2080 Stopband","publication_year":2021,"publication_date":"2021-12-29","ids":{"openalex":"https://openalex.org/W4200290693","doi":"https://doi.org/10.1109/tcsii.2021.3139158"},"language":"en","primary_location":{"id":"doi:10.1109/tcsii.2021.3139158","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcsii.2021.3139158","pdf_url":null,"source":{"id":"https://openalex.org/S93916849","display_name":"IEEE Transactions on Circuits & Systems II Express Briefs","issn_l":"1549-7747","issn":["1549-7747","1558-3791"],"is_oa":false,"is_in_doaj":false,"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 Transactions on Circuits and Systems II: Express Briefs","raw_type":"journal-article"},"type":"article","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/A5103206174","display_name":"Zhaoming Feng","orcid":"https://orcid.org/0000-0003-4842-557X"},"institutions":[{"id":"https://openalex.org/I158809036","display_name":"Shenzhen Institute of Information Technology","ror":"https://ror.org/03wrf9427","country_code":"CN","type":"education","lineage":["https://openalex.org/I158809036"]},{"id":"https://openalex.org/I4210138186","display_name":"Wuhan National Laboratory for Optoelectronics","ror":"https://ror.org/03c9ncn37","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210138186"]},{"id":"https://openalex.org/I47720641","display_name":"Huazhong University of Science and Technology","ror":"https://ror.org/00p991c53","country_code":"CN","type":"education","lineage":["https://openalex.org/I47720641"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Zhaoming Feng","raw_affiliation_strings":["School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China","Shenzhen Institute of Huazhong University of Science and Technology, Shenzhen, China"],"affiliations":[{"raw_affiliation_string":"School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China","institution_ids":["https://openalex.org/I4210138186","https://openalex.org/I47720641"]},{"raw_affiliation_string":"Shenzhen Institute of Huazhong University of Science and Technology, Shenzhen, China","institution_ids":["https://openalex.org/I158809036","https://openalex.org/I47720641"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101935185","display_name":"Xiaojun Bi","orcid":"https://orcid.org/0000-0001-9937-5352"},"institutions":[{"id":"https://openalex.org/I158809036","display_name":"Shenzhen Institute of Information Technology","ror":"https://ror.org/03wrf9427","country_code":"CN","type":"education","lineage":["https://openalex.org/I158809036"]},{"id":"https://openalex.org/I4210138186","display_name":"Wuhan National Laboratory for Optoelectronics","ror":"https://ror.org/03c9ncn37","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210138186"]},{"id":"https://openalex.org/I47720641","display_name":"Huazhong University of Science and Technology","ror":"https://ror.org/00p991c53","country_code":"CN","type":"education","lineage":["https://openalex.org/I47720641"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiaojun Bi","raw_affiliation_strings":["School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China","Shenzhen Institute of Huazhong University of Science and Technology, Shenzhen, China"],"affiliations":[{"raw_affiliation_string":"School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China","institution_ids":["https://openalex.org/I4210138186","https://openalex.org/I47720641"]},{"raw_affiliation_string":"Shenzhen Institute of Huazhong University of Science and Technology, Shenzhen, China","institution_ids":["https://openalex.org/I158809036","https://openalex.org/I47720641"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5024510077","display_name":"Zilan Cao","orcid":null},"institutions":[{"id":"https://openalex.org/I158809036","display_name":"Shenzhen Institute of Information Technology","ror":"https://ror.org/03wrf9427","country_code":"CN","type":"education","lineage":["https://openalex.org/I158809036"]},{"id":"https://openalex.org/I4210138186","display_name":"Wuhan National Laboratory for Optoelectronics","ror":"https://ror.org/03c9ncn37","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210138186"]},{"id":"https://openalex.org/I47720641","display_name":"Huazhong University of Science and Technology","ror":"https://ror.org/00p991c53","country_code":"CN","type":"education","lineage":["https://openalex.org/I47720641"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zilan Cao","raw_affiliation_strings":["School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China","Shenzhen Institute of Huazhong University of Science and Technology, Shenzhen, China"],"affiliations":[{"raw_affiliation_string":"School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China","institution_ids":["https://openalex.org/I4210138186","https://openalex.org/I47720641"]},{"raw_affiliation_string":"Shenzhen Institute of Huazhong University of Science and Technology, Shenzhen, China","institution_ids":["https://openalex.org/I158809036","https://openalex.org/I47720641"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102784891","display_name":"Andy Shen","orcid":"https://orcid.org/0000-0001-6535-9688"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Andy Shen","raw_affiliation_strings":["Hubei Jiufengshan Laboratory, Wuhan, China"],"affiliations":[{"raw_affiliation_string":"Hubei Jiufengshan Laboratory, Wuhan, China","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5034323271","display_name":"Qichao Ding","orcid":null},"institutions":[{"id":"https://openalex.org/I158809036","display_name":"Shenzhen Institute of Information Technology","ror":"https://ror.org/03wrf9427","country_code":"CN","type":"education","lineage":["https://openalex.org/I158809036"]},{"id":"https://openalex.org/I4210138186","display_name":"Wuhan National Laboratory for Optoelectronics","ror":"https://ror.org/03c9ncn37","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210138186"]},{"id":"https://openalex.org/I47720641","display_name":"Huazhong University of Science and Technology","ror":"https://ror.org/00p991c53","country_code":"CN","type":"education","lineage":["https://openalex.org/I47720641"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qichao Ding","raw_affiliation_strings":["School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China","Shenzhen Institute of Huazhong University of Science and Technology, Shenzhen, China"],"affiliations":[{"raw_affiliation_string":"School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China","institution_ids":["https://openalex.org/I4210138186","https://openalex.org/I47720641"]},{"raw_affiliation_string":"Shenzhen Institute of Huazhong University of Science and Technology, Shenzhen, China","institution_ids":["https://openalex.org/I158809036","https://openalex.org/I47720641"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5060138943","display_name":"Qinfen Xu","orcid":"https://orcid.org/0000-0003-0867-8847"},"institutions":[{"id":"https://openalex.org/I158809036","display_name":"Shenzhen Institute of Information Technology","ror":"https://ror.org/03wrf9427","country_code":"CN","type":"education","lineage":["https://openalex.org/I158809036"]},{"id":"https://openalex.org/I4210138186","display_name":"Wuhan National Laboratory for Optoelectronics","ror":"https://ror.org/03c9ncn37","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210138186"]},{"id":"https://openalex.org/I47720641","display_name":"Huazhong University of Science and Technology","ror":"https://ror.org/00p991c53","country_code":"CN","type":"education","lineage":["https://openalex.org/I47720641"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qinfen Xu","raw_affiliation_strings":["School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China","Shenzhen Institute of Huazhong University of Science and Technology, Shenzhen, China"],"affiliations":[{"raw_affiliation_string":"School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China","institution_ids":["https://openalex.org/I4210138186","https://openalex.org/I47720641"]},{"raw_affiliation_string":"Shenzhen Institute of Huazhong University of Science and Technology, Shenzhen, China","institution_ids":["https://openalex.org/I158809036","https://openalex.org/I47720641"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5103206174"],"corresponding_institution_ids":["https://openalex.org/I158809036","https://openalex.org/I4210138186","https://openalex.org/I47720641"],"apc_list":null,"apc_paid":null,"fwci":0.6072,"has_fulltext":false,"cited_by_count":9,"citation_normalized_percentile":{"value":0.68127356,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"69","issue":"4","first_page":"2061","last_page":"2065"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10262","display_name":"Microwave Engineering and Waveguides","score":0.9998000264167786,"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":0.9998000264167786,"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/T11383","display_name":"Advanced Antenna and Metasurface Technologies","score":0.9973000288009644,"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/T11444","display_name":"Electromagnetic Compatibility and Noise Suppression","score":0.9821000099182129,"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/stopband","display_name":"Stopband","score":0.8735487461090088},{"id":"https://openalex.org/keywords/insertion-loss","display_name":"Insertion loss","score":0.7934901714324951},{"id":"https://openalex.org/keywords/balun","display_name":"Balun","score":0.7452309131622314},{"id":"https://openalex.org/keywords/microstrip","display_name":"Microstrip","score":0.6400129199028015},{"id":"https://openalex.org/keywords/fractional-bandwidth","display_name":"Fractional bandwidth","score":0.6198641657829285},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.5368315577507019},{"id":"https://openalex.org/keywords/resonator","display_name":"Resonator","score":0.4967055916786194},{"id":"https://openalex.org/keywords/transmission-line","display_name":"Transmission line","score":0.4641975164413452},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.4383805990219116},{"id":"https://openalex.org/keywords/electrical-impedance","display_name":"Electrical impedance","score":0.4367738366127014},{"id":"https://openalex.org/keywords/coplanar-waveguide","display_name":"Coplanar waveguide","score":0.4209752082824707},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.41894298791885376},{"id":"https://openalex.org/keywords/electrical-length","display_name":"Electrical length","score":0.4171812832355499},{"id":"https://openalex.org/keywords/broadband","display_name":"Broadband","score":0.41250842809677124},{"id":"https://openalex.org/keywords/topology","display_name":"Topology (electrical circuits)","score":0.40486839413642883},{"id":"https://openalex.org/keywords/optoelectronics","display_name":"Optoelectronics","score":0.387421190738678},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3612837791442871},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.25979849696159363},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.2190975546836853},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.18360063433647156},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.1770910620689392},{"id":"https://openalex.org/keywords/microwave","display_name":"Microwave","score":0.17453154921531677},{"id":"https://openalex.org/keywords/microstrip-antenna","display_name":"Microstrip antenna","score":0.12619423866271973}],"concepts":[{"id":"https://openalex.org/C46271340","wikidata":"https://www.wikidata.org/wiki/Q1971063","display_name":"Stopband","level":3,"score":0.8735487461090088},{"id":"https://openalex.org/C90327742","wikidata":"https://www.wikidata.org/wiki/Q947396","display_name":"Insertion loss","level":2,"score":0.7934901714324951},{"id":"https://openalex.org/C114489654","wikidata":"https://www.wikidata.org/wiki/Q805838","display_name":"Balun","level":3,"score":0.7452309131622314},{"id":"https://openalex.org/C123657345","wikidata":"https://www.wikidata.org/wiki/Q639055","display_name":"Microstrip","level":2,"score":0.6400129199028015},{"id":"https://openalex.org/C3020798190","wikidata":"https://www.wikidata.org/wiki/Q249998","display_name":"Fractional bandwidth","level":3,"score":0.6198641657829285},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.5368315577507019},{"id":"https://openalex.org/C97126364","wikidata":"https://www.wikidata.org/wiki/Q349669","display_name":"Resonator","level":2,"score":0.4967055916786194},{"id":"https://openalex.org/C33441834","wikidata":"https://www.wikidata.org/wiki/Q693004","display_name":"Transmission line","level":2,"score":0.4641975164413452},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.4383805990219116},{"id":"https://openalex.org/C17829176","wikidata":"https://www.wikidata.org/wiki/Q179043","display_name":"Electrical impedance","level":2,"score":0.4367738366127014},{"id":"https://openalex.org/C3736036","wikidata":"https://www.wikidata.org/wiki/Q15525941","display_name":"Coplanar waveguide","level":3,"score":0.4209752082824707},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.41894298791885376},{"id":"https://openalex.org/C16193135","wikidata":"https://www.wikidata.org/wiki/Q474129","display_name":"Electrical length","level":5,"score":0.4171812832355499},{"id":"https://openalex.org/C509933004","wikidata":"https://www.wikidata.org/wiki/Q194163","display_name":"Broadband","level":2,"score":0.41250842809677124},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.40486839413642883},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.387421190738678},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3612837791442871},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.25979849696159363},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2190975546836853},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.18360063433647156},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.1770910620689392},{"id":"https://openalex.org/C44838205","wikidata":"https://www.wikidata.org/wiki/Q127995","display_name":"Microwave","level":2,"score":0.17453154921531677},{"id":"https://openalex.org/C170349913","wikidata":"https://www.wikidata.org/wiki/Q13402882","display_name":"Microstrip antenna","level":3,"score":0.12619423866271973},{"id":"https://openalex.org/C21822782","wikidata":"https://www.wikidata.org/wiki/Q131214","display_name":"Antenna (radio)","level":2,"score":0.0},{"id":"https://openalex.org/C196931383","wikidata":"https://www.wikidata.org/wiki/Q4771253","display_name":"Antenna factor","level":4,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tcsii.2021.3139158","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcsii.2021.3139158","pdf_url":null,"source":{"id":"https://openalex.org/S93916849","display_name":"IEEE Transactions on Circuits & Systems II Express Briefs","issn_l":"1549-7747","issn":["1549-7747","1558-3791"],"is_oa":false,"is_in_doaj":false,"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 Transactions on Circuits and Systems II: Express Briefs","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7","score":0.4399999976158142}],"awards":[{"id":"https://openalex.org/G272694172","display_name":null,"funder_award_id":"61871197","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6387977539","display_name":null,"funder_award_id":"K202002","funder_id":"https://openalex.org/F4320327028","funder_display_name":"State Key Laboratory of Millimeter Waves"},{"id":"https://openalex.org/G8127190991","display_name":null,"funder_award_id":"62074065","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G8691581882","display_name":null,"funder_award_id":"61904063","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G998252264","display_name":null,"funder_award_id":"JCYJ20180504170454381","funder_id":"https://openalex.org/F4320317136","funder_display_name":"Shenzhen Government"}],"funders":[{"id":"https://openalex.org/F4320317136","display_name":"Shenzhen Government","ror":null},{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320327028","display_name":"State Key Laboratory of Millimeter Waves","ror":null}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":19,"referenced_works":["https://openalex.org/W1669885137","https://openalex.org/W1968013028","https://openalex.org/W1991680123","https://openalex.org/W2124397584","https://openalex.org/W2136210589","https://openalex.org/W2204031324","https://openalex.org/W2287639763","https://openalex.org/W2338776934","https://openalex.org/W2589977738","https://openalex.org/W2764250380","https://openalex.org/W2809320907","https://openalex.org/W2895936031","https://openalex.org/W2918011434","https://openalex.org/W2943665554","https://openalex.org/W2972387247","https://openalex.org/W2990826322","https://openalex.org/W3000060862","https://openalex.org/W3037666835","https://openalex.org/W4248288458"],"related_works":["https://openalex.org/W4293062175","https://openalex.org/W2019930642","https://openalex.org/W2973111916","https://openalex.org/W2390739533","https://openalex.org/W2064947458","https://openalex.org/W2289099469","https://openalex.org/W1590405220","https://openalex.org/W4386260679","https://openalex.org/W2898698935","https://openalex.org/W2051955732"],"abstract_inverted_index":{"An":[0],"ultra-broadband":[1],"filtering":[2],"balun":[3,106],"with":[4,33,146],"microstrip":[5],"line-slotline":[6],"(ML-SL)":[7],"vertical":[8],"transition":[9],"structure":[10,23,55],"and":[11,45,61,131,165],"multi-ring":[12,22],"slotline":[13,28],"termination":[14,43],"is":[15,36],"proposed":[16,21],"in":[17,31],"this":[18],"brief.":[19],"The":[20,104],"consisting":[24],"of":[25,100,120,128,151,157],"three":[26],"closed":[27],"loops":[29],"connecting":[30],"series":[32],"each":[34],"other":[35],"stretched":[37],"beyond":[38],"ML-SL":[39],"transitions":[40],"as":[41],"a":[42,53,71,76,82,109,123,132,147],"load":[44],"helps":[46],"introduce":[47],"five":[48],"transmission":[49],"poles":[50],"(TPs).":[51],"Furthermore,":[52],"hybrid":[54],"integrating":[56],"backside":[57],"coplanar":[58],"waveguide":[59],"(CPW)":[60],"topside":[62],"microstrip-line":[63],"stepped-impedance":[64],"resonators":[65],"(SIRs)":[66],"are":[67,167],"employed":[68],"to":[69,90,138],"achieve":[70],"high":[72],"harmonic":[73,134],"rejection":[74,135,149],"within":[75],"wide":[77,133],"frequency":[78],"range.":[79],"In":[80],"addition,":[81],"low":[83],"insertion":[84,126],"loss":[85,94,127],"can":[86],"be":[87],"obtained":[88],"owing":[89],"the":[91,97,101,155,158,161,169],"reduced":[92],"radiation":[93],"brought":[95],"by":[96],"fully":[98],"symmetry":[99],"ring":[102],"loops.":[103],"fabricated":[105],"filter":[107],"demonstrates":[108],"161%":[110],"fractional":[111,163],"bandwidth":[112,164],"(FBW)":[113],"centering":[114],"around":[115],"f":[116],"<sub":[117,142],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[118,143],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">0</sub>":[119,144],"3.3":[121],"GHz,":[122],"minimum":[124,148],"in-band":[125],"0.37":[129],"dB,":[130],"band":[136],"up":[137],"20":[139],"GHz":[140],"(5.8f":[141],")":[145],"level":[150],"18.9":[152],"dB.":[153],"To":[154],"best":[156],"authors\u2019":[159],"knowledge,":[160],"achieved":[162],"stopband":[166],"among":[168],"best.":[170]},"counts_by_year":[{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":5},{"year":2022,"cited_by_count":1}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}