{"id":"https://openalex.org/W46040015","doi":"https://doi.org/10.21236/ad0661561","title":"APPLICATION OF GEOMETRICAL OPTICS TO THE DESIGN AND ANALYSIS OF MICROWAVE ANTENNAS","display_name":"APPLICATION OF GEOMETRICAL OPTICS TO THE DESIGN AND ANALYSIS OF MICROWAVE ANTENNAS","publication_year":1967,"publication_date":"1967-09-01","ids":{"openalex":"https://openalex.org/W46040015","doi":"https://doi.org/10.21236/ad0661561","mag":"46040015"},"language":"en","primary_location":{"id":"doi:10.21236/ad0661561","doi":"https://doi.org/10.21236/ad0661561","is_oa":false,"landing_page_url":"https://doi.org/10.21236/ad0661561","pdf_url":null,"source":{"id":"https://openalex.org/S4406923043","display_name":"Defense Technical Information Center (DTIC)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"US Dept of the Air Force","raw_type":"report"},"volume":null,"type":"report","is_traditional":false,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://hdl.handle.net/2027/mdp.39015095295294","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5088227909","display_name":"F. Holt","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"F. S. Holt","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5088227909"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":10,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10069","display_name":"Antenna Design and Analysis","score":0.760699987411499,"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/T10069","display_name":"Antenna Design and Analysis","score":0.760699987411499,"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/T10739","display_name":"Electromagnetic Scattering and Analysis","score":0.15639999508857727,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11946","display_name":"Antenna Design and Optimization","score":0.030700000002980232,"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/geometric-optics","display_name":"geometrical optics","score":0.8360000252723694},{"id":"https://openalex.org/keywords/microwave-antennas","display_name":"microwave antennas","score":0.8330000042915344},{"id":"https://openalex.org/keywords/eikonal-equation","display_name":"eikonal equation","score":0.9639999866485596},{"id":"https://openalex.org/keywords/caustics","display_name":"caustics","score":0.9459999799728394},{"id":"https://openalex.org/keywords/focal-surfaces","display_name":"focal surfaces","score":0.9390000104904175},{"id":"https://openalex.org/keywords/parabolic-reflector","display_name":"parabolic reflector","score":0.6610000133514404},{"id":"https://openalex.org/keywords/far-field-radiation-pattern","display_name":"far-field radiation pattern","score":0.46399998664855957}],"concepts":[{"id":"https://openalex.org/C44838205","wikidata":"https://www.wikidata.org/wiki/Q127995","display_name":"Microwave","level":2,"score":0.6986716985702515},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.49825358390808105},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.3828446865081787},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.354162335395813},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.24522018432617188}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.21236/ad0661561","doi":"https://doi.org/10.21236/ad0661561","is_oa":false,"landing_page_url":"https://doi.org/10.21236/ad0661561","pdf_url":null,"source":{"id":"https://openalex.org/S4406923043","display_name":"Defense Technical Information Center (DTIC)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"US Dept of the Air Force","raw_type":"report"},{"id":"pmh:AD0661561","doi":null,"is_oa":false,"landing_page_url":"http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0661561","pdf_url":null,"source":{"id":"https://openalex.org/S4406923043","display_name":"Defense Technical Information Center (DTIC)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"DTIC AND NTIS","raw_type":"Text"},{"id":"pmh:oai:quod.lib.umich.edu:MIU01-102766411","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/2027/mdp.39015095295294","pdf_url":null,"source":{"id":"https://openalex.org/S7407064297","display_name":"University of Michigan Library Repository","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"public-domain","license_id":"https://openalex.org/licenses/public-domain","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"}],"best_oa_location":{"id":"pmh:oai:quod.lib.umich.edu:MIU01-102766411","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/2027/mdp.39015095295294","pdf_url":null,"source":{"id":"https://openalex.org/S7407064297","display_name":"University of Michigan Library Repository","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"public-domain","license_id":"https://openalex.org/licenses/public-domain","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W4404798702","https://openalex.org/W1560163032","https://openalex.org/W1993616095","https://openalex.org/W2186361502","https://openalex.org/W2093400878","https://openalex.org/W2022915860","https://openalex.org/W112233783","https://openalex.org/W2521020336","https://openalex.org/W2131608009","https://openalex.org/W1974263459"],"abstract_inverted_index":{"The":[0,21,48,69,125,166],"basic":[1],"concepts":[2],"of":[3,29,40,50,65,71,127,162,168,172,186,189],"geometrical":[4,43,159],"optics":[5,16,44,53,160],"together":[6],"with":[7],"the":[8,14,27,34,51,86,90,95,108,116,133,163,169,190],"additional":[9],"assumption":[10],"that":[11,111,119],"lead":[12],"to":[13,42,55,79,82,102,131,147,156],"'geometrical":[15,52],"approximation'":[17,54],"are":[18,140,151,182,193],"described":[19,61],"here.":[20],"eikonal":[22],"equation":[23],"is":[24,45,60,67,77,100,129],"derived":[25],"and":[26,58,62,93,138,153,184],"relationship":[28],"exact":[30],"electromagnetic":[31],"theory":[32],"in":[33,74,85,89,94,107,121],"limit":[35,39],"as":[36],"wavelength":[37],"approaches":[38],"0":[41],"made":[46],"evident.":[47],"application":[49],"phase":[56],"analysis":[57,99],"synthesis":[59,66],"an":[63],"example":[64],"presented.":[68],"concept":[70],"power":[72,83],"flow":[73],"ray":[75],"tubes":[76],"used":[78,101,130,155],"obtain":[80],"approximations":[81],"distributions":[84],"antenna":[87],"aperture,":[88],"focal":[91,109,164,170,191],"region,":[92],"far":[96],"field.":[97],"Ray":[98],"determine":[103],"those":[104],"feed":[105],"locations":[106],"region":[110],"will":[112],"most":[113],"nearly":[114],"collimate":[115],"far-field":[117],"rays":[118],"lie":[120],"certain":[122],"desirable":[123],"planes.":[124],"Theorem":[126],"Malus":[128],"formulate":[132],"equal":[134],"path":[135],"length":[136],"law":[137],"applications":[139],"given.":[141],"Focal":[142],"surfaces":[143,171,192],"(or":[144],"caustics)":[145],"relative":[146],"a":[148,158,173,176],"rectilinear":[149],"congruence":[150],"defined":[152],"then":[154],"present":[157],"description":[161],"region.":[165],"equations":[167],"paraboloid":[174],"receiving":[175],"plane":[177],"wave":[178],"20":[179],"degrees":[180],"off-axis":[181],"calculated":[183],"photographs":[185],"three-dimensional":[187],"models":[188],"shown.":[194]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2024,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2016-06-24T00:00:00"}