{"title":"Quadruple Folded Groove-Guide Slow Wave Structure With Power Synthesis Circuit for Terahertz TWT","authors":"Jingrui Duan;Zhigang Lu;Peng Gao;Zechuan Wang;Jingyu Guo;Yang Dong;Yuan Zheng;Zhanliang Wang;Shaomeng Wang;Huarong Gong;Yubin Gong","doi":"10.1109/LED.2024.3515646","DOIUrl":null,"url":null,"abstract":"In this letter, a novel power synthesis scheme is proposed for high-power terahertz (THz) traveling-wave tube (TWT), which features a quadruple folded groove-guide (Q-FGG) slow wave structure (SWS) and a power synthesis circuit. Numerical simulations validate the high-frequency characteristics of Q-FGG-SWS. Particle-In-Cell (PIC) simulations predict that, driven by four 125mA electron beams at 28.4kV, the Q-FGG-TWT is expected to achieve possibility of output power of approximately 177.3W at 316GHz. The Q-FGG-SWSs were fabricated using high-precision computer numerical control (CNC) milling technology. The dispersion characteristics of Q-FGG-SWS and transmission characteristics of the Q-FGG-SWSs based on the compact multi-stage groove-T coupler were experimentally verified. Therefore, the Q-FGG-SWS with a compact power synthesis circuit offers a promising approach for enhancing the power output of THz-TWTs.","PeriodicalId":13198,"journal":{"name":"IEEE Electron Device Letters","volume":"46 2","pages":"302-305"},"PeriodicalIF":4.5000,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Electron Device Letters","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10793420/","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
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Abstract
In this letter, a novel power synthesis scheme is proposed for high-power terahertz (THz) traveling-wave tube (TWT), which features a quadruple folded groove-guide (Q-FGG) slow wave structure (SWS) and a power synthesis circuit. Numerical simulations validate the high-frequency characteristics of Q-FGG-SWS. Particle-In-Cell (PIC) simulations predict that, driven by four 125mA electron beams at 28.4kV, the Q-FGG-TWT is expected to achieve possibility of output power of approximately 177.3W at 316GHz. The Q-FGG-SWSs were fabricated using high-precision computer numerical control (CNC) milling technology. The dispersion characteristics of Q-FGG-SWS and transmission characteristics of the Q-FGG-SWSs based on the compact multi-stage groove-T coupler were experimentally verified. Therefore, the Q-FGG-SWS with a compact power synthesis circuit offers a promising approach for enhancing the power output of THz-TWTs.
期刊介绍：
IEEE Electron Device Letters publishes original and significant contributions relating to the theory, modeling, design, performance and reliability of electron and ion integrated circuit devices and interconnects, involving insulators, metals, organic materials, micro-plasmas, semiconductors, quantum-effect structures, vacuum devices, and emerging materials with applications in bioelectronics, biomedical electronics, computation, communications, displays, microelectromechanics, imaging, micro-actuators, nanoelectronics, optoelectronics, photovoltaics, power ICs and micro-sensors.
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