{"id":"https://openalex.org/W2891548191","doi":"https://doi.org/10.3390/s18093079","title":"Comparative Study of Square and Circular Loop Frequency Selective Surfaces for Millimeter-Wave Imaging Diagnostics Systems","display_name":"Comparative Study of Square and Circular Loop Frequency Selective Surfaces for Millimeter-Wave Imaging Diagnostics Systems","publication_year":2018,"publication_date":"2018-09-13","ids":{"openalex":"https://openalex.org/W2891548191","doi":"https://doi.org/10.3390/s18093079","mag":"2891548191","pmid":"https://pubmed.ncbi.nlm.nih.gov/30217059"},"language":"en","primary_location":{"id":"doi:10.3390/s18093079","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s18093079","pdf_url":"https://www.mdpi.com/1424-8220/18/9/3079/pdf?version=1536835989","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/1424-8220/18/9/3079/pdf?version=1536835989","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5068708931","display_name":"Wahab Mohyuddin","orcid":"https://orcid.org/0000-0002-7514-2463"},"institutions":[{"id":"https://openalex.org/I31419693","display_name":"Kyungpook National University","ror":"https://ror.org/040c17130","country_code":"KR","type":"education","lineage":["https://openalex.org/I31419693"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Wahab Mohyuddin","raw_affiliation_strings":["School of Electronics Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Korea"],"raw_orcid":"https://orcid.org/0000-0002-7514-2463","affiliations":[{"raw_affiliation_string":"School of Electronics Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Korea","institution_ids":["https://openalex.org/I31419693"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101616163","display_name":"Dong Hwi Kim","orcid":"https://orcid.org/0000-0002-3840-3054"},"institutions":[{"id":"https://openalex.org/I31419693","display_name":"Kyungpook National University","ror":"https://ror.org/040c17130","country_code":"KR","type":"education","lineage":["https://openalex.org/I31419693"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Dong Hwi Kim","raw_affiliation_strings":["School of Electronics Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Electronics Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Korea","institution_ids":["https://openalex.org/I31419693"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5052252731","display_name":"Hyun Chul Choi","orcid":"https://orcid.org/0000-0003-3128-6737"},"institutions":[{"id":"https://openalex.org/I31419693","display_name":"Kyungpook National University","ror":"https://ror.org/040c17130","country_code":"KR","type":"education","lineage":["https://openalex.org/I31419693"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Hyun Chul Choi","raw_affiliation_strings":["School of Electronics Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Electronics Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Korea","institution_ids":["https://openalex.org/I31419693"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5103120773","display_name":"Kang Wook Kim","orcid":"https://orcid.org/0000-0002-3959-9191"},"institutions":[{"id":"https://openalex.org/I31419693","display_name":"Kyungpook National University","ror":"https://ror.org/040c17130","country_code":"KR","type":"education","lineage":["https://openalex.org/I31419693"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Kang Wook Kim","raw_affiliation_strings":["School of Electronics Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Electronics Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Korea","institution_ids":["https://openalex.org/I31419693"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5103120773"],"corresponding_institution_ids":["https://openalex.org/I31419693"],"apc_list":{"value":2400,"currency":"CHF","value_usd":2598},"apc_paid":{"value":2400,"currency":"CHF","value_usd":2598},"fwci":6.32,"has_fulltext":true,"cited_by_count":15,"citation_normalized_percentile":{"value":0.96780597,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"18","issue":"9","first_page":"3079","last_page":"3079"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11383","display_name":"Advanced Antenna and Metasurface Technologies","score":1.0,"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"}},"topics":[{"id":"https://openalex.org/T11383","display_name":"Advanced Antenna and Metasurface Technologies","score":1.0,"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/T10069","display_name":"Antenna Design and Analysis","score":0.9988999962806702,"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/T10245","display_name":"Metamaterials and Metasurfaces Applications","score":0.9912999868392944,"subfield":{"id":"https://openalex.org/subfields/2504","display_name":"Electronic, Optical and Magnetic Materials"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/loop","display_name":"Loop (graph theory)","score":0.8349291086196899},{"id":"https://openalex.org/keywords/square","display_name":"Square (algebra)","score":0.7235573530197144},{"id":"https://openalex.org/keywords/extremely-high-frequency","display_name":"Extremely high frequency","score":0.5922896265983582},{"id":"https://openalex.org/keywords/fabrication","display_name":"Fabrication","score":0.5710411667823792},{"id":"https://openalex.org/keywords/parametric-statistics","display_name":"Parametric statistics","score":0.4988703727722168},{"id":"https://openalex.org/keywords/millimeter","display_name":"Millimeter","score":0.47899553179740906},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.45479682087898254},{"id":"https://openalex.org/keywords/insertion-loss","display_name":"Insertion loss","score":0.43709033727645874},{"id":"https://openalex.org/keywords/band-pass-filter","display_name":"Band-pass filter","score":0.4370805025100708},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.358028382062912},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.3432557284832001},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.3424534201622009},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.3015890121459961},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.12651365995407104},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.1236756443977356}],"concepts":[{"id":"https://openalex.org/C184670325","wikidata":"https://www.wikidata.org/wiki/Q512604","display_name":"Loop (graph theory)","level":2,"score":0.8349291086196899},{"id":"https://openalex.org/C135692309","wikidata":"https://www.wikidata.org/wiki/Q111124","display_name":"Square (algebra)","level":2,"score":0.7235573530197144},{"id":"https://openalex.org/C45764600","wikidata":"https://www.wikidata.org/wiki/Q570342","display_name":"Extremely high frequency","level":2,"score":0.5922896265983582},{"id":"https://openalex.org/C136525101","wikidata":"https://www.wikidata.org/wiki/Q5428139","display_name":"Fabrication","level":3,"score":0.5710411667823792},{"id":"https://openalex.org/C117251300","wikidata":"https://www.wikidata.org/wiki/Q1849855","display_name":"Parametric statistics","level":2,"score":0.4988703727722168},{"id":"https://openalex.org/C109792285","wikidata":"https://www.wikidata.org/wiki/Q174789","display_name":"Millimeter","level":2,"score":0.47899553179740906},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.45479682087898254},{"id":"https://openalex.org/C90327742","wikidata":"https://www.wikidata.org/wiki/Q947396","display_name":"Insertion loss","level":2,"score":0.43709033727645874},{"id":"https://openalex.org/C147788027","wikidata":"https://www.wikidata.org/wiki/Q2718101","display_name":"Band-pass filter","level":2,"score":0.4370805025100708},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.358028382062912},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.3432557284832001},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.3424534201622009},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.3015890121459961},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.12651365995407104},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.1236756443977356},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.0},{"id":"https://openalex.org/C204787440","wikidata":"https://www.wikidata.org/wiki/Q188504","display_name":"Alternative medicine","level":2,"score":0.0},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.0}],"mesh":[],"locations_count":6,"locations":[{"id":"doi:10.3390/s18093079","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s18093079","pdf_url":"https://www.mdpi.com/1424-8220/18/9/3079/pdf?version=1536835989","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},{"id":"pmid:30217059","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/30217059","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors (Basel, Switzerland)","raw_type":null},{"id":"pmh:oai:doaj.org/article:f3ca5c02894c45a796277120d84a0fb7","is_oa":true,"landing_page_url":"https://doaj.org/article/f3ca5c02894c45a796277120d84a0fb7","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":"Sensors, Vol 18, Iss 9, p 3079 (2018)","raw_type":"article"},{"id":"pmh:oai:europepmc.org:5126503","is_oa":true,"landing_page_url":"http://europepmc.org/pmc/articles/PMC6164311","pdf_url":null,"source":{"id":"https://openalex.org/S4306400806","display_name":"Europe PMC (PubMed Central)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1303153112","host_organization_name":"European Bioinformatics Institute","host_organization_lineage":["https://openalex.org/I1303153112"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Text"},{"id":"pmh:oai:mdpi.com:/1424-8220/18/9/3079/","is_oa":true,"landing_page_url":"http://dx.doi.org/10.3390/s18093079","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"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":"Sensors","raw_type":"Text"},{"id":"pmh:oai:pubmedcentral.nih.gov:6164311","is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/6164311","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"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":"Sensors (Basel)","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/s18093079","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s18093079","pdf_url":"https://www.mdpi.com/1424-8220/18/9/3079/pdf?version=1536835989","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.49000000953674316,"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7"}],"awards":[{"id":"https://openalex.org/G2236518028","display_name":null,"funder_award_id":"21A20131600011","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"},{"id":"https://openalex.org/G3694962154","display_name":null,"funder_award_id":"21A20131600011","funder_id":"https://openalex.org/F4320311687","funder_display_name":"Ministry of Education"},{"id":"https://openalex.org/G583836972","display_name":null,"funder_award_id":"21A20131600011","funder_id":"https://openalex.org/F4320322349","funder_display_name":"Ministry of Education, Science and Technology"},{"id":"https://openalex.org/G8323938689","display_name":null,"funder_award_id":"NRF - 2017M1A7A1A03064220","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"}],"funders":[{"id":"https://openalex.org/F4320311687","display_name":"Ministry of Education","ror":"https://ror.org/03m01yf64"},{"id":"https://openalex.org/F4320320671","display_name":"National Research Foundation","ror":"https://ror.org/05s0g1g46"},{"id":"https://openalex.org/F4320322120","display_name":"National Research Foundation of Korea","ror":"https://ror.org/013aysd81"},{"id":"https://openalex.org/F4320322349","display_name":"Ministry of Education, Science and Technology","ror":"https://ror.org/01p262204"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2891548191.pdf","grobid_xml":"https://content.openalex.org/works/W2891548191.grobid-xml"},"referenced_works_count":29,"referenced_works":["https://openalex.org/W1487756772","https://openalex.org/W1966212177","https://openalex.org/W1986464576","https://openalex.org/W1999755153","https://openalex.org/W2028902600","https://openalex.org/W2039137004","https://openalex.org/W2053083437","https://openalex.org/W2058618191","https://openalex.org/W2065951824","https://openalex.org/W2084314296","https://openalex.org/W2115624530","https://openalex.org/W2117128303","https://openalex.org/W2120808926","https://openalex.org/W2129415395","https://openalex.org/W2136324960","https://openalex.org/W2137868540","https://openalex.org/W2138021594","https://openalex.org/W2149328468","https://openalex.org/W2164457416","https://openalex.org/W2166800361","https://openalex.org/W2313324646","https://openalex.org/W2496901760","https://openalex.org/W2509931284","https://openalex.org/W2538932098","https://openalex.org/W2580403742","https://openalex.org/W2595461055","https://openalex.org/W2736899363","https://openalex.org/W2786564507","https://openalex.org/W4214749394"],"related_works":["https://openalex.org/W2137242540","https://openalex.org/W2552264029","https://openalex.org/W4389584603","https://openalex.org/W1539734297","https://openalex.org/W2317169686","https://openalex.org/W1185324648","https://openalex.org/W2539553997","https://openalex.org/W3159902002","https://openalex.org/W3208155863","https://openalex.org/W2363237216"],"abstract_inverted_index":{"A":[0],"design":[1,88,92,140],"method":[2],"of":[3,15,29,58,116,158],"large-sized":[4],"square-loop":[5,59,94,144],"and":[6,60,83,95,105,145,155],"circular-loop":[7,61,69,96,119],"frequency":[8,164],"selective":[9],"surface":[10],"(FSS)":[11],"filters":[12,98,121,149],"for":[13],"protection":[14],"mm-wave":[16,34],"imagining":[17],"receivers":[18],"is":[19,65],"presented.":[20],"Due":[21],"to":[22,76],"fine":[23],"cell":[24],"structure":[25,71],"requirements,":[26],"the":[27,30,56,68,77,106,117,129,139,153,162],"performance":[28,57],"FSS":[31,62,70,120,148],"structures":[32],"at":[33,100,161],"frequencies":[35,115],"can":[36,134],"be":[37,135],"significantly":[38],"affected":[39],"by":[40,123],"fabrication":[41,78],"tolerances,":[42,79],"especially":[43],"involved":[44],"with":[45,86,110,165],"large-size":[46],"panel":[47],"fabrication.":[48],"Through":[49],"a":[50,91],"comprehensive":[51],"parametric":[52],"variation":[53],"study":[54],"on":[55],"structures,":[63],"it":[64],"found":[66],"that":[67],"performs":[72],"much":[73],"less":[74],"sensitively":[75],"thereby":[80],"producing":[81],"better":[82],"consistent":[84],"performances":[85,107],"given":[87],"values.":[89],"As":[90],"example,":[93],"notch":[97],"resonating":[99],"105":[101],"GHz":[102,127],"were":[103,108],"designed":[104,131],"evaluated":[109],"multiple":[111],"prototypes.":[112],"The":[113,142],"resonant":[114,163],"implemented":[118,143],"deviated":[122],"only":[124],"about":[125],"0.5":[126],"from":[128],"accurate":[130],"value,":[132],"which":[133],"easily":[136],"adjusted":[137],"in":[138,152],"process.":[141],"circular":[146],"loop":[147],"provided":[150],"low-loss":[151],"pass-band":[154],"high":[156],"rejection":[157],"23":[159],"dB":[160],"good":[166],"oblique":[167],"angle":[168],"performance.":[169]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":7},{"year":2021,"cited_by_count":1},{"year":2019,"cited_by_count":2}],"updated_date":"2026-06-09T15:46:55.921056","created_date":"2025-10-10T00:00:00"}