{"id":"https://openalex.org/W2425360855","doi":"https://doi.org/10.2174/2352096509666151203220703","title":"An Improved U-Shaped Microstrip Meander-Line Slow Wave Structure for High Efficiency G-band Traveling Wave Tubes","display_name":"An Improved U-Shaped Microstrip Meander-Line Slow Wave Structure for High Efficiency G-band Traveling Wave Tubes","publication_year":2015,"publication_date":"2015-12-15","ids":{"openalex":"https://openalex.org/W2425360855","doi":"https://doi.org/10.2174/2352096509666151203220703","mag":"2425360855"},"language":"en","primary_location":{"id":"doi:10.2174/2352096509666151203220703","doi":"https://doi.org/10.2174/2352096509666151203220703","is_oa":false,"landing_page_url":"https://doi.org/10.2174/2352096509666151203220703","pdf_url":null,"source":{"id":"https://openalex.org/S4210188825","display_name":"Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering)","issn_l":"2352-0965","issn":["2352-0965","2352-0973"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","norway-1"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Recent Advances in Electrical &amp; Electronic Engineering (Formerly Recent Patents on Electrical &amp; Electronic Engineering)","raw_type":"journal-article"},"volume":null,"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/A5035795038","display_name":"Esmaeel Tahanian","orcid":"https://orcid.org/0000-0003-0302-1918","observed_orcids":["https://orcid.org/0000-0003-0302-1918"]},"institutions":[{"id":"https://openalex.org/I119025939","display_name":"Shahed University","ror":"https://ror.org/01e8ff003","country_code":"IR","type":"education","lineage":["https://openalex.org/I119025939"]}],"countries":["IR"],"is_corresponding":false,"raw_author_name":"Esmaeel Tahanian","raw_affiliation_strings":["Electrical and Electronic Engineering Department, Shahed University, Tehran, Iran.,Iran"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Electrical and Electronic Engineering Department, Shahed University, Tehran, Iran.,Iran","institution_ids":["https://openalex.org/I119025939"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5016731707","display_name":"Gholamreza R. Dadashzadeh","orcid":"https://orcid.org/0000-0002-8479-6784","observed_orcids":["https://orcid.org/0000-0002-8479-6784"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Gholam R. Dadashzadeh","raw_affiliation_strings":[",0"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":",0","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.1704,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.55129864,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"9","issue":"1","first_page":"68","last_page":"72"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11175","display_name":"Gyrotron and Vacuum Electronics Research","score":0.9970999956130981,"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"}},"topics":[{"id":"https://openalex.org/T11175","display_name":"Gyrotron and Vacuum Electronics Research","score":0.9970999956130981,"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/T11367","display_name":"Particle accelerators and beam dynamics","score":0.000699999975040555,"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/T10559","display_name":"Particle Accelerators and Free-Electron Lasers","score":0.0003000000142492354,"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/slow-wave-structure","display_name":"slow-wave structure","score":0.9229999780654907},{"id":"https://openalex.org/keywords/dispersion-analysis","display_name":"dispersion analysis","score":0.5960000157356262},{"id":"https://openalex.org/keywords/s-parameters","display_name":"S-parameters","score":0.753000020980835},{"id":"https://openalex.org/keywords/beam-wave-interaction","display_name":"beam-wave interaction","score":0.6830000281333923}],"concepts":[{"id":"https://openalex.org/C142803427","wikidata":"https://www.wikidata.org/wiki/Q1164091","display_name":"Traveling-wave tube","level":4,"score":0.8122978210449219},{"id":"https://openalex.org/C123657345","wikidata":"https://www.wikidata.org/wiki/Q639055","display_name":"Microstrip","level":2,"score":0.6223844289779663},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.5980146527290344},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.5697497725486755},{"id":"https://openalex.org/C95312477","wikidata":"https://www.wikidata.org/wiki/Q207340","display_name":"Cathode ray","level":3,"score":0.5028743147850037},{"id":"https://openalex.org/C44838205","wikidata":"https://www.wikidata.org/wiki/Q127995","display_name":"Microwave","level":2,"score":0.45184847712516785},{"id":"https://openalex.org/C168834538","wikidata":"https://www.wikidata.org/wiki/Q3705329","display_name":"Beam (structure)","level":2,"score":0.433559387922287},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.4275131821632385},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.3766728341579437},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.35202404856681824},{"id":"https://openalex.org/C147120987","wikidata":"https://www.wikidata.org/wiki/Q2225","display_name":"Electron","level":2,"score":0.27486392855644226},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.2007770538330078},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.1390882432460785},{"id":"https://openalex.org/C194257627","wikidata":"https://www.wikidata.org/wiki/Q211554","display_name":"Amplifier","level":3,"score":0.1352175772190094},{"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:10.2174/2352096509666151203220703","doi":"https://doi.org/10.2174/2352096509666151203220703","is_oa":false,"landing_page_url":"https://doi.org/10.2174/2352096509666151203220703","pdf_url":null,"source":{"id":"https://openalex.org/S4210188825","display_name":"Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering)","issn_l":"2352-0965","issn":["2352-0965","2352-0973"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","norway-1"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Recent Advances in Electrical &amp; Electronic Engineering (Formerly Recent Patents on Electrical &amp; Electronic Engineering)","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"sustainable_development_goals_aurora":[{"display_name":"Affordable and clean energy","score":0.7400000095367432,"id":"https://metadata.un.org/sdg/7"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2347967529","https://openalex.org/W2799136942","https://openalex.org/W4293194355","https://openalex.org/W2343788020","https://openalex.org/W1973298537","https://openalex.org/W2381121703","https://openalex.org/W3197217184","https://openalex.org/W4382204755","https://openalex.org/W4313577315","https://openalex.org/W2349785760"],"abstract_inverted_index":{"In":[0,117],"this":[1,97],"paper,":[2],"an":[3],"improved":[4],"U-shaped":[5],"microstrip":[6,198],"meander-line":[7,72],"slow":[8],"wave":[9,18,33,57,78,84],"structure":[10,203],"(SWS)":[11],"for":[12,80,91],"low-voltage":[13],"high-efficiency":[14],"miniature":[15],"G-band":[16,153],"traveling":[17],"tubes":[19],"(TWT)":[20],"is":[21,52,101,155,181],"presented.":[22],"To":[23],"increase":[24],"the":[25,28,35,42,45,50,55,69,76,82,93,104,119,123,126,133,139,152,177,186],"TWT":[26,154],"efficiency,":[27],"synchronization":[29],"between":[30,128],"electromagnetic":[31,134],"(EM)":[32],"and":[34,103,125,132,144],"electron":[36,46,129],"beam":[37,47,131],"should":[38,60],"be":[39,61],"maintained.":[40],"Since":[41],"velocity":[43,59],"of":[44,71,96,99,122,141,157,161,169,189],"passing":[48],"along":[49],"tube":[51,208],"gradually":[53,67],"reduced,":[54],"EM":[56,77,83],"phase":[58,85],"also":[62],"slowed":[63],"down.":[64],"Therefore,":[65],"we":[66],"lengthen":[68],"width":[70],"to":[73,174],"make":[74],"longer":[75],"path":[79],"decreasing":[81],"velocity.":[86],"Meanwhile,":[87],"a":[88],"simple":[89],"analysis":[90],"calculating":[92],"dispersion":[94],"properties":[95],"kind":[98],"SWS":[100,124],"presented":[102],"analytical":[105],"results":[106],"are":[107,136],"compared":[108],"with":[109,138,165,185],"those":[110],"obtained":[111],"from":[112,172],"simulation":[113],"using":[114],"CST-microwave":[115],"studio.":[116],"addition,":[118],"scattering":[120],"parameters":[121],"interaction":[127],"sheet":[130],"fields":[135],"investigated":[137],"help":[140],"CSTmicrowave":[142],"studio":[143],"CST-Particle":[145],"Studio,":[146],"respectively.":[147],"Our":[148],"study":[149],"shows":[150],"that":[151],"capable":[156],"delivering":[158],"several":[159],"tens":[160],"watts":[162],"output":[163,179],"power":[164,180],"3-dB":[166],"frequency":[167],"bandwidth":[168],"17GHz,":[170],"ranging":[171],"210GHz":[173],"227GHz.":[175],"Additionally,":[176],"peak":[178],"about":[182],"50":[183],"W":[184],"corresponding":[187],"gain":[188],"40":[190],"dB":[191],"at":[192],"218":[193],"GHz.":[194],"Keywords:":[195],"Beam-wave":[196],"interaction,":[197],"meander":[199],"line":[200],"(MML),":[201],"slow-wave":[202],"(SWS),":[204],"transfer":[205],"matrix,":[206],"travelingwave":[207],"(TWT).":[209]},"counts_by_year":[{"year":2018,"cited_by_count":1}],"updated_date":"2026-09-26T08:19:03.415552","created_date":"2025-10-10T00:00:00"}
