{"id":"https://openalex.org/A5059152151","orcid":"https://orcid.org/0000-0002-7533-4975","observed_orcids":["https://orcid.org/0000-0002-7533-4975"],"display_name":"Sunkyu Choi","raw_author_names":["Choi Sun Kyu","Choi, Sunkyu","S. Choi","S.J. Choi","Sun Kyu Choi","Sun-Kyu Choi","Sunkyu Choi","Sunkyu choi"],"full_name":"Sun-Kyu Choi","works_count":84,"cited_by_count":716,"summary_stats":{"2yr_mean_citedness":7.5,"h_index":15,"i10_index":23},"ids":{"openalex":"https://openalex.org/A5059152151","orcid":"https://orcid.org/0000-0002-7533-4975","observed_orcids":["https://orcid.org/0000-0002-7533-4975"]},"affiliations":[{"institution":{"id":"https://openalex.org/I157485424","ror":"https://ror.org/05apxxy63","display_name":"Korea Advanced Institute of Science and Technology","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]},"years":[2018,2012,2010,2009,2008,2007,2006,2005,2003]},{"institution":{"id":"https://openalex.org/I196345858","ror":"https://ror.org/0227as991","display_name":"Chungnam National University","country_code":"KR","type":"education","lineage":["https://openalex.org/I196345858"]},"years":[2024,2023,2022,2021,2020,2019]},{"institution":{"id":"https://openalex.org/I198972184","ror":"https://ror.org/04fperw70","display_name":"Korea Electric Power Corporation (South Korea)","country_code":"KR","type":"company","lineage":["https://openalex.org/I198972184"]},"years":[2021,2018]},{"institution":{"id":"https://openalex.org/I2250650973","ror":"https://ror.org/04w3jy968","display_name":"Samsung (South Korea)","country_code":"KR","type":"company","lineage":["https://openalex.org/I2250650973"]},"years":[2015,2014,2009,2004]},{"institution":{"id":"https://openalex.org/I4405258162","ror":"https://ror.org/007gmjd97","display_name":"Korea Electric Power Research Institute","country_code":"KR","type":"facility","lineage":["https://openalex.org/I198972184","https://openalex.org/I4405258162"]},"years":[2021,2018,2014]},{"institution":{"id":"https://openalex.org/I4405259277","ror":"https://ror.org/020m7t761","display_name":"Samsung Electronics (South Korea)","country_code":"KR","type":"company","lineage":["https://openalex.org/I2250650973","https://openalex.org/I4405259277"]},"years":[2015,2014,2004]},{"institution":{"id":"https://openalex.org/I848706","ror":"https://ror.org/04q78tk20","display_name":"Sungkyunkwan University","country_code":"KR","type":"education","lineage":["https://openalex.org/I848706"]},"years":[2016]},{"institution":{"id":"https://openalex.org/I8991828","ror":"https://ror.org/0433kqc49","display_name":"Pukyong National University","country_code":"KR","type":"education","lineage":["https://openalex.org/I8991828"]},"years":[2018]}],"last_known_institutions":[{"id":"https://openalex.org/I196345858","ror":"https://ror.org/0227as991","display_name":"Chungnam National University","country_code":"KR","type":"education","lineage":["https://openalex.org/I196345858"]}],"topics":[{"id":"https://openalex.org/T10187","display_name":"Radio Frequency Integrated Circuit Design","count":53,"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/T10323","display_name":"Analog and Mixed-Signal Circuit Design","count":21,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical 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/T10262","display_name":"Microwave Engineering and Waveguides","count":17,"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/T10558","display_name":"Advancements in Semiconductor Devices and Circuit Design","count":16,"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/T11248","display_name":"Advanced Power Amplifier Design","count":15,"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"}}],"topic_share":[{"id":"https://openalex.org/T10187","display_name":"Radio Frequency Integrated Circuit Design","value":0.0001823,"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/T11417","display_name":"Advancements in PLL and VCO Technologies","value":0.0001213,"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/T11248","display_name":"Advanced Power Amplifier Design","value":0.0001181,"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/T14502","display_name":"High-Voltage Power Transmission Systems","value":7.53e-05,"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/T10787","display_name":"Lightning and Electromagnetic Phenomena","value":6.64e-05,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","score":0.8988308310508728},{"id":"119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","score":0.7397684454917908},{"id":"127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","score":0.6489390134811401},{"id":"165801399","wikidata":"https://www.wikidata.org/wiki/Q25428","display_name":"Voltage","score":0.5688115954399109},{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.46420153975486755}],"counts_by_year":[{"year":2003,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2004,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":2005,"works_count":5,"oa_works_count":2,"cited_by_count":0},{"year":2006,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":2007,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":2008,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2009,"works_count":7,"oa_works_count":0,"cited_by_count":0},{"year":2010,"works_count":10,"oa_works_count":0,"cited_by_count":0},{"year":2011,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":5,"oa_works_count":1,"cited_by_count":30},{"year":2013,"works_count":2,"oa_works_count":0,"cited_by_count":18},{"year":2014,"works_count":4,"oa_works_count":2,"cited_by_count":16},{"year":2015,"works_count":1,"oa_works_count":0,"cited_by_count":14},{"year":2016,"works_count":2,"oa_works_count":1,"cited_by_count":6},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":17},{"year":2018,"works_count":5,"oa_works_count":1,"cited_by_count":22},{"year":2019,"works_count":6,"oa_works_count":0,"cited_by_count":25},{"year":2020,"works_count":7,"oa_works_count":1,"cited_by_count":31},{"year":2021,"works_count":2,"oa_works_count":0,"cited_by_count":69},{"year":2022,"works_count":2,"oa_works_count":1,"cited_by_count":55},{"year":2023,"works_count":7,"oa_works_count":2,"cited_by_count":90},{"year":2024,"works_count":2,"oa_works_count":0,"cited_by_count":88},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":89},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":53}],"display_name_alternatives":["Choi Sun Kyu","Choi, Sunkyu","S. Choi","S.J. Choi","Sun Kyu Choi","Sun-Kyu Choi","Sunkyu Choi","Sunkyu choi"],"block_key":"s choi","works_api_url":"https://api.openalex.org/works?filter=author.id:A5059152151","updated_date":"2026-10-31T12:29:50","created_date":"2016-06-24T00:00:00"}
