{"title":"Design and PIC Simulation of Dual-band RBWO Under Low Magnetic Field Operation","authors":"V. Reddy, P. Verma, M. Thottappan","doi":"10.1109/WAMS54719.2022.9847781","DOIUrl":null,"url":null,"abstract":"A dual-band Relativistic Backward Wave Oscillator (RBWO) has been designed and simulated under the lowest magnetic field using a finite difference time domain (FDTD) based 3D electromagnetic code. The dual-band oscillations were obtained by cascading two slow-wave structures (SWS) with the same transverse dimensions separated by a drift section. To reflect the dual-band microwave of the backward TM01 mode into a forward TM01 wave towards the collector, a rectangular resonant reflector (RR) was used. The effect of cyclotron and Cerenkov absorption on the dual-band frequency generation and average RF output power was presented to identify the operating magnetic field. An average RF output power ∼275 MW was predicted at both ∼3.6 GHz and ∼4.5 GHz with a magnetic field of ∼0.25 T.","PeriodicalId":410781,"journal":{"name":"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/WAMS54719.2022.9847781","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
A dual-band Relativistic Backward Wave Oscillator (RBWO) has been designed and simulated under the lowest magnetic field using a finite difference time domain (FDTD) based 3D electromagnetic code. The dual-band oscillations were obtained by cascading two slow-wave structures (SWS) with the same transverse dimensions separated by a drift section. To reflect the dual-band microwave of the backward TM01 mode into a forward TM01 wave towards the collector, a rectangular resonant reflector (RR) was used. The effect of cyclotron and Cerenkov absorption on the dual-band frequency generation and average RF output power was presented to identify the operating magnetic field. An average RF output power ∼275 MW was predicted at both ∼3.6 GHz and ∼4.5 GHz with a magnetic field of ∼0.25 T.
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