{"id":"https://openalex.org/W4412372260","doi":"https://doi.org/10.1109/jestpe.2025.3586666","title":"Spiral Capacitive Coupler and Optimum Impedance Matching for Capacitive Wireless Power Transfer","display_name":"Spiral Capacitive Coupler and Optimum Impedance Matching for Capacitive Wireless Power Transfer","publication_year":2025,"publication_date":"2025-07-09","ids":{"openalex":"https://openalex.org/W4412372260","doi":"https://doi.org/10.1109/jestpe.2025.3586666"},"language":"en","primary_location":{"id":"doi:10.1109/jestpe.2025.3586666","doi":"https://doi.org/10.1109/jestpe.2025.3586666","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jestpe.2025.3586666","pdf_url":null,"source":{"id":"https://openalex.org/S2764857692","display_name":"IEEE Journal of Emerging and Selected Topics in Power Electronics","issn_l":"2168-6777","issn":["2168-6777","2168-6785"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","jufo-2","norway-1","poland-140","russia-white-list-1"],"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 Journal of Emerging and Selected Topics in Power Electronics","raw_type":"journal-article"},"parent_works":[],"lineage":["https://openalex.org/W4412372260"],"child_works_count":0,"type":"article","is_traditional":true,"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/A5073365380","display_name":"Waqar Hussain Khan","orcid":"https://orcid.org/0000-0003-0123-6456","observed_orcids":["https://orcid.org/0000-0003-0123-6456","https://orcid.org/0009-0005-8554-7084"]},"institutions":[{"id":"https://openalex.org/I146429904","display_name":"Incheon National University","ror":"https://ror.org/02xf7p935","country_code":"KR","type":"education","lineage":["https://openalex.org/I146429904"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Waqar Hussain Khan","raw_affiliation_strings":["Department of Electrical Engineering, Incheon National University, Incheon, South Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Incheon National University, Incheon, South Korea","institution_ids":["https://openalex.org/I146429904"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5039161729","display_name":"Dukju Ahn","orcid":"https://orcid.org/0000-0001-8331-2808","observed_orcids":["https://orcid.org/0000-0001-8331-2808"]},"institutions":[{"id":"https://openalex.org/I146429904","display_name":"Incheon National University","ror":"https://ror.org/02xf7p935","country_code":"KR","type":"education","lineage":["https://openalex.org/I146429904"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Dukju Ahn","raw_affiliation_strings":["Department of Electrical Engineering, Incheon National University, Incheon, South Korea"],"raw_orcid":"https://orcid.org/0000-0001-8331-2808","affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Incheon National University, Incheon, South Korea","institution_ids":["https://openalex.org/I146429904"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I146429904"],"apc_list":{"value":2645,"currency":"USD","value_usd":2645},"apc_paid":null,"fwci":0.3914,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.46582939,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":95,"max":96},"biblio":{"volume":"14","issue":"1","first_page":"1269","last_page":"1279"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11249","display_name":"Wireless Power Transfer Systems","score":1.0,"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/T11249","display_name":"Wireless Power Transfer Systems","score":1.0,"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/T10175","display_name":"Advanced DC-DC Converters","score":0.0,"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/T12898","display_name":"Induction Heating and Inverter Technology","score":0.0,"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/capacitive-power-transfer","display_name":"capacitive power transfer","score":0.9789999723434448},{"id":"https://openalex.org/keywords/coupling-capacitance","display_name":"coupling capacitance","score":0.7070000171661377},{"id":"https://openalex.org/keywords/impedance-matching","display_name":"impedance matching","score":0.8820000290870667},{"id":"https://openalex.org/keywords/power-transfer-efficiency","display_name":"power transfer efficiency","score":0.7200000286102295},{"id":"https://openalex.org/keywords/parasitic-resistance","display_name":"parasitic resistance","score":0.878000020980835}],"concepts":[{"id":"https://openalex.org/C206755178","wikidata":"https://www.wikidata.org/wiki/Q1131271","display_name":"Capacitive sensing","level":2,"score":0.806626558303833},{"id":"https://openalex.org/C612350","wikidata":"https://www.wikidata.org/wiki/Q1761108","display_name":"Impedance matching","level":3,"score":0.704088032245636},{"id":"https://openalex.org/C2779423816","wikidata":"https://www.wikidata.org/wiki/Q6856398","display_name":"Wireless power transfer","level":3,"score":0.6668237447738647},{"id":"https://openalex.org/C174128100","wikidata":"https://www.wikidata.org/wiki/Q846907","display_name":"Spiral (railway)","level":2,"score":0.6572181582450867},{"id":"https://openalex.org/C67186554","wikidata":"https://www.wikidata.org/wiki/Q17103352","display_name":"Maximum power transfer theorem","level":3,"score":0.5495582222938538},{"id":"https://openalex.org/C17829176","wikidata":"https://www.wikidata.org/wiki/Q179043","display_name":"Electrical impedance","level":2,"score":0.5376426577568054},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.5017285346984863},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.49479788541793823},{"id":"https://openalex.org/C80185135","wikidata":"https://www.wikidata.org/wiki/Q1417986","display_name":"Hybrid coupler","level":3,"score":0.46206554770469666},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.43953660130500793},{"id":"https://openalex.org/C52192207","wikidata":"https://www.wikidata.org/wiki/Q5322","display_name":"Capacitor","level":3,"score":0.4379643499851227},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.3853904902935028},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.37305355072021484},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.3506786823272705},{"id":"https://openalex.org/C202988678","wikidata":"https://www.wikidata.org/wiki/Q1417986","display_name":"Power dividers and directional couplers","level":2,"score":0.31011953949928284},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.23153838515281677},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.22177717089653015},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.20690220594406128},{"id":"https://openalex.org/C165801399","wikidata":"https://www.wikidata.org/wiki/Q25428","display_name":"Voltage","level":2,"score":0.11566174030303955},{"id":"https://openalex.org/C78519656","wikidata":"https://www.wikidata.org/wiki/Q101333","display_name":"Mechanical engineering","level":1,"score":0.07632753252983093},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/jestpe.2025.3586666","doi":"https://doi.org/10.1109/jestpe.2025.3586666","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jestpe.2025.3586666","pdf_url":null,"source":{"id":"https://openalex.org/S2764857692","display_name":"IEEE Journal of Emerging and Selected Topics in Power Electronics","issn_l":"2168-6777","issn":["2168-6777","2168-6785"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","jufo-2","norway-1","poland-140","russia-white-list-1"],"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 Journal of Emerging and Selected Topics in Power Electronics","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/9","display_name":"Industry, innovation and infrastructure","score":0.651199996471405}],"study_designs":[],"awards":[{"id":"https://openalex.org/G2020453838","display_name":null,"funder_award_id":"2021-0172","funder_id":"https://openalex.org/F4320321363","funder_display_name":"Incheon National University"}],"funders":[{"id":"https://openalex.org/F4320321363","display_name":"Incheon National University","ror":"https://ror.org/02xf7p935"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":31,"referenced_works":["https://openalex.org/W1994043074","https://openalex.org/W2097941400","https://openalex.org/W2155296087","https://openalex.org/W2294394308","https://openalex.org/W2345126914","https://openalex.org/W2587453509","https://openalex.org/W2609139183","https://openalex.org/W2772475489","https://openalex.org/W2890434788","https://openalex.org/W2907237108","https://openalex.org/W2912334437","https://openalex.org/W2953183384","https://openalex.org/W2996216894","https://openalex.org/W3009368506","https://openalex.org/W3047804020","https://openalex.org/W3089707234","https://openalex.org/W3095864777","https://openalex.org/W3193447964","https://openalex.org/W3197096630","https://openalex.org/W3215334709","https://openalex.org/W4206052267","https://openalex.org/W4229039074","https://openalex.org/W4293731192","https://openalex.org/W4384519249","https://openalex.org/W4388895060","https://openalex.org/W4400188230","https://openalex.org/W4400810026","https://openalex.org/W4402593532","https://openalex.org/W4404317215","https://openalex.org/W4408564535","https://openalex.org/W4408859736"],"related_works":["https://openalex.org/W7131854035","https://openalex.org/W2995510588","https://openalex.org/W2506527753","https://openalex.org/W2512423766","https://openalex.org/W2750369963","https://openalex.org/W2809913419","https://openalex.org/W2810783124","https://openalex.org/W4367359577","https://openalex.org/W2987226218","https://openalex.org/W2513615974"],"abstract_inverted_index":{"This":[0,48],"paper":[1],"improves":[2],"the":[3,16,26,42,46,53,58,65,71,78,81,100,135,139,152,158,161],"coupling":[4,28,54,61,89,104,120],"capacitance":[5,62,90,105],"of":[6,32,45,102,191],"capacitive":[7,27],"wireless":[8],"power":[9,187],"transfer":[10],"using":[11],"spiral-shaped":[12],"slots":[13],"and":[14,91,110,138,163],"presents":[15],"optimal":[17],"parameter":[18],"selection":[19],"strategy":[20],"to":[21,40,76,117,123],"improve":[22],"overall":[23,79],"efficiency.":[24],"Regarding":[25,70],"plate,":[29],"it":[30],"consists":[31],"a":[33,124,189],"very":[34],"thin":[35],"but":[36],"dense":[37],"spiral":[38],"pattern":[39],"increase":[41],"internal":[43],"self-inductance":[44,49],"capacitor.":[47],"significantly":[50],"compensates":[51],"for":[52,87,151],"capacitance,":[55],"thereby":[56,170],"increasing":[57],"effective":[59],"net":[60],"value":[63,147],"at":[64,173,188],"same":[66],"physical":[67],"outer":[68],"dimensions.":[69],"optimum":[72,82,119,144],"impedance":[73,84],"transformation":[74],"network":[75,166],"maximize":[77],"efficiency,":[80],"matching":[83,145,165],"is":[85,96,113,149,155,167],"analyzed":[86],"given":[88],"its":[92],"parasitic":[93],"resistance.":[94],"It":[95],"also":[97,114,168],"found":[98],"that":[99],"benefit":[101],"high":[103],"saturates":[106],"beyond":[107],"certain":[108],"limit,":[109],"this":[111],"limit":[112],"analytically":[115],"derived":[116],"design":[118],"capacitance.":[121],"Compared":[122],"conventional":[125],"capacitive-inductive":[126],"hybrid":[127],"coupler,":[128],"our":[129],"proposed":[130],"system":[131],"does":[132],"not":[133],"need":[134],"litz-wire":[136],"coupler":[137],"heavy/brittle":[140],"ferrite":[141],"materials.":[142],"The":[143,177],"inductance":[146],"which":[148],"required":[150],"highest":[153],"efficiency":[154,182],"reduced.":[156],"Moreover,":[157],"current":[159],"through":[160],"inverter":[162],"TX-side":[164,174],"reduced,":[169],"reducing":[171],"losses":[172],"as":[175],"well.":[176],"measurement":[178],"results":[179],"achieve":[180],"88.46%":[181],"with":[183],"200":[184],"W":[185],"load":[186],"frequency":[190],"2.8":[192],"MHz.":[193]},"counts_by_year":[{"year":2026,"cited_by_count":2}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2025-10-10T00:00:00"}
