{"id":"https://openalex.org/W2126003802","doi":"https://doi.org/10.1109/tcom.1979.1094327","title":"20, 30 GHz Band Cassegrain Earth Station Antenna for the Japanese Domestic Satellite Communication System","display_name":"20, 30 GHz Band Cassegrain Earth Station Antenna for the Japanese Domestic Satellite Communication System","publication_year":1979,"publication_date":"1979-11-01","ids":{"openalex":"https://openalex.org/W2126003802","doi":"https://doi.org/10.1109/tcom.1979.1094327","mag":"2126003802"},"language":"en","primary_location":{"id":"doi:10.1109/tcom.1979.1094327","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcom.1979.1094327","pdf_url":null,"source":{"id":"https://openalex.org/S4210170832","display_name":"IRE Transactions on Communications Systems","issn_l":"0096-2244","issn":["0096-2244","2162-2132"],"is_oa":false,"is_in_doaj":false,"is_core":false,"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 Communications","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/A5004292093","display_name":"Tadashi Takano","orcid":"https://orcid.org/0000-0002-3356-7009"},"institutions":[{"id":"https://openalex.org/I4210152081","display_name":"Naval Hospital Yokosuka Japan","ror":"https://ror.org/016ec0748","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210152081"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"T. Takano","raw_affiliation_strings":["Trunk Transmission System Development Division, Yokosuka Electrical Communication Laboratory, Yokosuka, Japan","Yokosuka Electrical Comm. Lab., NTT, Japan"],"affiliations":[{"raw_affiliation_string":"Trunk Transmission System Development Division, Yokosuka Electrical Communication Laboratory, Yokosuka, Japan","institution_ids":[]},{"raw_affiliation_string":"Yokosuka Electrical Comm. Lab., NTT, Japan","institution_ids":["https://openalex.org/I4210152081"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5031465104","display_name":"Eiichi Ogawa","orcid":"https://orcid.org/0000-0002-5082-3967"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"E. Ogawa","raw_affiliation_strings":["Trunk Transmission System Development Division, Yokosuka Electrical Communication Laboratory, Yokosuka, Japan","[Trunk Transmission System Development Division, Yokosuka Electrical Communication Laboratory, Yokosuka, Japan]"],"affiliations":[{"raw_affiliation_string":"Trunk Transmission System Development Division, Yokosuka Electrical Communication Laboratory, Yokosuka, Japan","institution_ids":[]},{"raw_affiliation_string":"[Trunk Transmission System Development Division, Yokosuka Electrical Communication Laboratory, Yokosuka, Japan]","institution_ids":[]}]},{"author_position":"middle","author":{"id":null,"display_name":"M. Shinji","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"M. Shinji","raw_affiliation_strings":["Research and Development Bureau, NTT, Musashino, Japan","[Research and Development Bureau, NTT, Musashino, Japan]"],"affiliations":[{"raw_affiliation_string":"Research and Development Bureau, NTT, Musashino, Japan","institution_ids":[]},{"raw_affiliation_string":"[Research and Development Bureau, NTT, Musashino, Japan]","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5048055427","display_name":"Naoyuki Ishida","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"N. Ishida","raw_affiliation_strings":[],"affiliations":[]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5004292093"],"corresponding_institution_ids":["https://openalex.org/I4210152081"],"apc_list":null,"apc_paid":null,"fwci":51.135,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":{"value":0.99524535,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":null,"biblio":{"volume":"27","issue":"11","first_page":"1728","last_page":"1731"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10069","display_name":"Antenna Design and Analysis","score":0.9854000210762024,"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/T10069","display_name":"Antenna Design and Analysis","score":0.9854000210762024,"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/T11946","display_name":"Antenna Design and Optimization","score":0.9621000289916992,"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/T12042","display_name":"Satellite Communication Systems","score":0.9545000195503235,"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/cassegrain-reflector","display_name":"Cassegrain reflector","score":0.684167742729187},{"id":"https://openalex.org/keywords/cassegrain-antenna","display_name":"Cassegrain antenna","score":0.67494136095047},{"id":"https://openalex.org/keywords/antenna","display_name":"Antenna (radio)","score":0.634194016456604},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.5655668377876282},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.4965866208076477},{"id":"https://openalex.org/keywords/communications-satellite","display_name":"Communications satellite","score":0.4850958585739136},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.4841811954975128},{"id":"https://openalex.org/keywords/geostationary-orbit","display_name":"Geostationary orbit","score":0.4750014543533325},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.46822115778923035},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.4329123795032501},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.43244510889053345},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.35532695055007935},{"id":"https://openalex.org/keywords/omnidirectional-antenna","display_name":"Omnidirectional antenna","score":0.347052663564682},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.2865478992462158},{"id":"https://openalex.org/keywords/periscope-antenna","display_name":"Periscope antenna","score":0.2100462019443512},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.18136584758758545},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.17723426222801208},{"id":"https://openalex.org/keywords/aerospace-engineering","display_name":"Aerospace engineering","score":0.16561853885650635},{"id":"https://openalex.org/keywords/telescope","display_name":"Telescope","score":0.10511863231658936}],"concepts":[{"id":"https://openalex.org/C192121959","wikidata":"https://www.wikidata.org/wiki/Q1048295","display_name":"Cassegrain reflector","level":3,"score":0.684167742729187},{"id":"https://openalex.org/C183006278","wikidata":"https://www.wikidata.org/wiki/Q5979730","display_name":"Cassegrain antenna","level":5,"score":0.67494136095047},{"id":"https://openalex.org/C21822782","wikidata":"https://www.wikidata.org/wiki/Q131214","display_name":"Antenna (radio)","level":2,"score":0.634194016456604},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.5655668377876282},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.4965866208076477},{"id":"https://openalex.org/C121308736","wikidata":"https://www.wikidata.org/wiki/Q149918","display_name":"Communications satellite","level":3,"score":0.4850958585739136},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.4841811954975128},{"id":"https://openalex.org/C16405173","wikidata":"https://www.wikidata.org/wiki/Q192316","display_name":"Geostationary orbit","level":3,"score":0.4750014543533325},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.46822115778923035},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.4329123795032501},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.43244510889053345},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.35532695055007935},{"id":"https://openalex.org/C24027999","wikidata":"https://www.wikidata.org/wiki/Q2176348","display_name":"Omnidirectional antenna","level":3,"score":0.347052663564682},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.2865478992462158},{"id":"https://openalex.org/C138949660","wikidata":"https://www.wikidata.org/wiki/Q7168757","display_name":"Periscope antenna","level":4,"score":0.2100462019443512},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.18136584758758545},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.17723426222801208},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.16561853885650635},{"id":"https://openalex.org/C2780848835","wikidata":"https://www.wikidata.org/wiki/Q4213","display_name":"Telescope","level":2,"score":0.10511863231658936},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tcom.1979.1094327","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcom.1979.1094327","pdf_url":null,"source":{"id":"https://openalex.org/S4210170832","display_name":"IRE Transactions on Communications Systems","issn_l":"0096-2244","issn":["0096-2244","2162-2132"],"is_oa":false,"is_in_doaj":false,"is_core":false,"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 Communications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.7200000286102295,"display_name":"Sustainable cities and communities","id":"https://metadata.un.org/sdg/11"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":2,"referenced_works":["https://openalex.org/W2108013897","https://openalex.org/W2126003802"],"related_works":["https://openalex.org/W1987907158","https://openalex.org/W2161360380","https://openalex.org/W2098985816","https://openalex.org/W3001694200","https://openalex.org/W2913096854","https://openalex.org/W40119708","https://openalex.org/W2105409752","https://openalex.org/W2150170605","https://openalex.org/W321449732","https://openalex.org/W3026336884"],"abstract_inverted_index":{"An":[0],"11.5":[1],"m":[2,182],"30/20":[3],"GHz":[4,105,111,154],"band":[5,106,155],"Cassegrain":[6],"antenna":[7,32,58,95,98,129],"has":[8],"been":[9],"developed":[10],"for":[11],"a":[12,42,47,61,78,84],"Japanese":[13],"domestic":[14],"satellite":[15,26,73],"communication":[16,27],"system":[17,81,159],"earth":[18,30],"station.":[19],"In":[20],"order":[21],"to":[22,35,68,90,137,179],"form":[23],"an":[24],"economical":[25],"network,":[28],"the":[29,39,64,72,94,119,128,131,152,170],"station":[31],"is":[33,88,135],"required":[34],"be":[36,69,138,175],"installed":[37,176],"on":[38,60],"top":[40],"of":[41,127],"telephone":[43],"office":[44],"building":[45,62],"in":[46,75,103,109,160],"large":[48],"city.":[49],"Therefore,":[50],"interference":[51],"with":[52,83,151],"terrestrial":[53,156,171],"radio":[54,157],"relay":[55,158],"systems":[56],"and":[57,92,107],"load":[59],"become":[63],"most":[65],"important":[66],"problems":[67],"investigated.":[70],"Considering":[71],"position":[74],"geostationary":[76],"orbit,":[77],"limited":[79],"steerable":[80],"combined":[82],"two-jackscrew":[85],"drive":[86],"mechanism":[87],"employed":[89],"lighten":[91],"simplify":[93],"structure.":[96],"Measured":[97,113],"aperture":[99],"efficiencies":[100],"are":[101],"72%":[102],"20":[104,153,181],"68%":[108],"30":[110],"band.":[112],"wide":[114],"angle":[115],"radiation":[116],"patterns":[117],"satisfy":[118],"CCIR":[120],"recommendation":[121],"level.":[122],"The":[123],"<tex":[124,142],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[125,143],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">G/T</tex>":[126],"at":[130,141,147],"feed":[132],"horn":[133],"port":[134],"measured":[136],"53.9":[139],"dB/K":[140],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">El":[144],"=":[145],"45\\deg</tex>":[146],"18.75":[148],"GHz.":[149],"Interference":[150],"extremely":[161],"near":[162],"field":[163],"was":[164],"experimentally":[165],"studied.":[166],"Results":[167],"show":[168],"that":[169],"system's":[172],"antennas":[173],"can":[174],"closely":[177],"up":[178],"about":[180],"without":[183],"serious":[184],"interference.":[185]},"counts_by_year":[],"updated_date":"2026-04-16T08:26:57.006410","created_date":"2025-10-10T00:00:00"}