{"id":"https://openalex.org/W2169787674","doi":"https://doi.org/10.1109/apccas.2008.4745968","title":"Compact microstrip square-loop dual-mode bandpass filter design with wideband response","display_name":"Compact microstrip square-loop dual-mode bandpass filter design with wideband response","publication_year":2008,"publication_date":"2008-11-01","ids":{"openalex":"https://openalex.org/W2169787674","doi":"https://doi.org/10.1109/apccas.2008.4745968","mag":"2169787674"},"language":"en","primary_location":{"id":"doi:10.1109/apccas.2008.4745968","is_oa":false,"landing_page_url":"https://doi.org/10.1109/apccas.2008.4745968","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems","raw_type":"proceedings-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/A5060188742","display_name":"Ting-Shan Lv","orcid":null},"institutions":[{"id":"https://openalex.org/I204512498","display_name":"University of Macau","ror":"https://ror.org/01r4q9n85","country_code":"MO","type":"education","lineage":["https://openalex.org/I204512498"]}],"countries":["MO"],"is_corresponding":false,"raw_author_name":"Ting-Shan Lv","raw_affiliation_strings":["Wireless Communication Laboratory Faculty of Science & Technology, University of Macau, Macao, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Wireless Communication Laboratory Faculty of Science & Technology, University of Macau, Macao, China","institution_ids":["https://openalex.org/I204512498"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5040097593","display_name":"Si-Weng Fok","orcid":null},"institutions":[{"id":"https://openalex.org/I204512498","display_name":"University of Macau","ror":"https://ror.org/01r4q9n85","country_code":"MO","type":"education","lineage":["https://openalex.org/I204512498"]}],"countries":["MO"],"is_corresponding":false,"raw_author_name":"Si-Weng Fok","raw_affiliation_strings":["Wireless Communication Laboratory Faculty of Science & Technology, University of Macau, Macao, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Wireless Communication Laboratory Faculty of Science & Technology, University of Macau, Macao, China","institution_ids":["https://openalex.org/I204512498"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5007876688","display_name":"Pedro Cheong","orcid":"https://orcid.org/0000-0001-7222-1740"},"institutions":[{"id":"https://openalex.org/I204512498","display_name":"University of Macau","ror":"https://ror.org/01r4q9n85","country_code":"MO","type":"education","lineage":["https://openalex.org/I204512498"]}],"countries":["MO"],"is_corresponding":false,"raw_author_name":"Pedro Cheong","raw_affiliation_strings":["Wireless Communication Laboratory Faculty of Science & Technology, University of Macau, Macao, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Wireless Communication Laboratory Faculty of Science & Technology, University of Macau, Macao, China","institution_ids":["https://openalex.org/I204512498"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5026910611","display_name":"Kam\u2010Weng Tam","orcid":"https://orcid.org/0000-0002-3760-8955"},"institutions":[{"id":"https://openalex.org/I204512498","display_name":"University of Macau","ror":"https://ror.org/01r4q9n85","country_code":"MO","type":"education","lineage":["https://openalex.org/I204512498"]}],"countries":["MO"],"is_corresponding":false,"raw_author_name":"Kam-Weng Tam","raw_affiliation_strings":["Wireless Communication Laboratory Faculty of Science & Technology, University of Macau, Macao, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Wireless Communication Laboratory Faculty of Science & Technology, University of Macau, Macao, China","institution_ids":["https://openalex.org/I204512498"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.17719922,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"54","issue":null,"first_page":"93","last_page":"96"},"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":0.9933000206947327,"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":0.9750000238418579,"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/passband","display_name":"Passband","score":0.7826403975486755},{"id":"https://openalex.org/keywords/band-pass-filter","display_name":"Band-pass filter","score":0.7365216016769409},{"id":"https://openalex.org/keywords/insertion-loss","display_name":"Insertion loss","score":0.5881062150001526},{"id":"https://openalex.org/keywords/resonator","display_name":"Resonator","score":0.5701915621757507},{"id":"https://openalex.org/keywords/wideband","display_name":"Wideband","score":0.504515528678894},{"id":"https://openalex.org/keywords/elliptic-filter","display_name":"Elliptic filter","score":0.4859119951725006},{"id":"https://openalex.org/keywords/butterworth-filter","display_name":"Butterworth filter","score":0.47710639238357544},{"id":"https://openalex.org/keywords/prototype-filter","display_name":"Prototype filter","score":0.4671570360660553},{"id":"https://openalex.org/keywords/band-stop-filter","display_name":"Band-stop filter","score":0.464297354221344},{"id":"https://openalex.org/keywords/microstrip","display_name":"Microstrip","score":0.4515657424926758},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.44417765736579895},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.4387732148170471},{"id":"https://openalex.org/keywords/m-derived-filter","display_name":"m-derived filter","score":0.4222193956375122},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.40144258737564087},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.3510262072086334},{"id":"https://openalex.org/keywords/low-pass-filter","display_name":"Low-pass filter","score":0.32035788893699646},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.29838594794273376},{"id":"https://openalex.org/keywords/optoelectronics","display_name":"Optoelectronics","score":0.25669097900390625},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.25362735986709595},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.2324361801147461},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.18320083618164062}],"concepts":[{"id":"https://openalex.org/C46416853","wikidata":"https://www.wikidata.org/wiki/Q254758","display_name":"Passband","level":3,"score":0.7826403975486755},{"id":"https://openalex.org/C147788027","wikidata":"https://www.wikidata.org/wiki/Q2718101","display_name":"Band-pass filter","level":2,"score":0.7365216016769409},{"id":"https://openalex.org/C90327742","wikidata":"https://www.wikidata.org/wiki/Q947396","display_name":"Insertion loss","level":2,"score":0.5881062150001526},{"id":"https://openalex.org/C97126364","wikidata":"https://www.wikidata.org/wiki/Q349669","display_name":"Resonator","level":2,"score":0.5701915621757507},{"id":"https://openalex.org/C2780202535","wikidata":"https://www.wikidata.org/wiki/Q4524457","display_name":"Wideband","level":2,"score":0.504515528678894},{"id":"https://openalex.org/C144378017","wikidata":"https://www.wikidata.org/wiki/Q1051541","display_name":"Elliptic filter","level":5,"score":0.4859119951725006},{"id":"https://openalex.org/C70757512","wikidata":"https://www.wikidata.org/wiki/Q1018162","display_name":"Butterworth filter","level":5,"score":0.47710639238357544},{"id":"https://openalex.org/C175742284","wikidata":"https://www.wikidata.org/wiki/Q1415537","display_name":"Prototype filter","level":4,"score":0.4671570360660553},{"id":"https://openalex.org/C112806600","wikidata":"https://www.wikidata.org/wiki/Q386022","display_name":"Band-stop filter","level":4,"score":0.464297354221344},{"id":"https://openalex.org/C123657345","wikidata":"https://www.wikidata.org/wiki/Q639055","display_name":"Microstrip","level":2,"score":0.4515657424926758},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.44417765736579895},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.4387732148170471},{"id":"https://openalex.org/C156930551","wikidata":"https://www.wikidata.org/wiki/Q17102852","display_name":"m-derived filter","level":4,"score":0.4222193956375122},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.40144258737564087},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.3510262072086334},{"id":"https://openalex.org/C44682112","wikidata":"https://www.wikidata.org/wiki/Q918242","display_name":"Low-pass filter","level":3,"score":0.32035788893699646},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.29838594794273376},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.25669097900390625},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.25362735986709595},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2324361801147461},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.18320083618164062}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/apccas.2008.4745968","is_oa":false,"landing_page_url":"https://doi.org/10.1109/apccas.2008.4745968","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","score":0.4699999988079071,"display_name":"Affordable and clean energy"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":8,"referenced_works":["https://openalex.org/W2095622427","https://openalex.org/W2124538649","https://openalex.org/W2131293845","https://openalex.org/W2134200418","https://openalex.org/W2145870146","https://openalex.org/W2166434938","https://openalex.org/W2167696015","https://openalex.org/W6679631695"],"related_works":["https://openalex.org/W4234160366","https://openalex.org/W1588217219","https://openalex.org/W2543701934","https://openalex.org/W4231969299","https://openalex.org/W2153587328","https://openalex.org/W2189522528","https://openalex.org/W2143111556","https://openalex.org/W2990404041","https://openalex.org/W2065462772","https://openalex.org/W2380331066"],"abstract_inverted_index":{"In":[0,32,63],"this":[1],"paper,":[2],"a":[3,26,47,74],"dual-mode":[4],"bandpass":[5],"filter":[6,72,76],"using":[7],"square-loop":[8,24],"resonator":[9],"is":[10,30,77,88],"proposed":[11,71],"for":[12],"wideband":[13],"applications.":[14],"By":[15],"introducing":[16],"two":[17,56],"capacitive":[18],"stepped-impedance":[19],"inner":[20],"arms":[21],"along":[22],"the":[23,34,37,41,60,67,70],"resonator,":[25],"wide":[27],"passband":[28,42],"response":[29],"achieved.":[31],"addition,":[33],"degradation":[35],"of":[36,49,59,69],"insertion":[38],"loss":[39],"over":[40],"can":[43],"be":[44],"enhanced":[45],"by":[46],"pair":[48],"tight":[50],"coupling":[51],"feed":[52],"lines":[53],"located":[54],"at":[55,79],"perpendicular":[57],"positions":[58],"square":[61],"ring.":[62],"order":[64],"to":[65],"demonstrate":[66],"performance":[68],"structure,":[73],"prototype":[75],"designed":[78],"5":[80],"GHz":[81],"with":[82],"74%":[83],"fractional":[84],"bandwidth.":[85],"Good":[86],"agreement":[87],"obtained":[89],"between":[90],"simulations":[91],"and":[92],"measurements.":[93]},"counts_by_year":[],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}