Modal transition and reduction in a lossy dielectric-coated waveguide for gyrotron-traveling-wave tube amplifier applications
文献类型：期刊论文
| 作者 | Du, Chao-Hai1,2,3; Xue, Qian-Zhong1,2; Liu, Pu-Kun1,2; Wang, Ming-Hong4 |
| 刊名 | Ieee transactions on electron devices
 |
| 出版日期 | 2009-05-01 |
| 卷号 | 56期号:5页码:839-845 |
| 关键词 | Complex propagation constant Gyrotron-traveling-wave tube (gyro-twt) Lossy dielectric |
| ISSN号 | 0018-9383 |
| DOI | 10.1109/ted.2009.2015422 |
| 通讯作者 | Du, chao-hai(duchaohai@gmail.com) |
| 英文摘要 | A metal cylindrical waveguide coated with an inside layer of lossy dielectric which affects the propagation characteristics of a guided electromagnetic mode is investigated for gyrotron-traveling-wave tube (gyro-twt) amplifier applications. this paper reveals a series of novel phenomena. the dispersion curve of a higher order mode has a turning point during its evolvement from the fast wave region to the slow wave region. an electromagnetic mode in the lossy dielectric-coated waveguide exhibits a transverse partial-standing-wave distribution. the dielectric loss induces modal transition which results in the dispersion curves of a pair of nearby modes crossing each other and interchanging mode structures. modal reduction caused by strong dielectric loss merges a pair of nearby modes into one. in this one merged mode, the dielectric-coated waveguide is equivalent to a conventional cylindrical waveguide with imperfect conducting wall. this improved understanding of lossy dielectric-coated metal cylindrical waveguide is of value and usefulness for application toward gyro-twts capable of high-power and wide bandwidth. |
| WOS关键词 | MASER |
| WOS研究方向 | Engineering ; Physics |
| WOS类目 | Engineering, Electrical & Electronic ; Physics, Applied |
| 语种 | 英语 |
| WOS记录号 | WOS:000265712400020 |
| 出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2401123 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Du, Chao-Hai |
| 作者单位 | 1.Chinese Acad Sci, Key Lab High Power Microwave Sources & Technol, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Elect, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100190, Peoples R China 4.LiaoCheng Univ, Sch Phys Sci & Informat Engn, Liaocheng 252059, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, Chao-Hai,Xue, Qian-Zhong,Liu, Pu-Kun,et al. Modal transition and reduction in a lossy dielectric-coated waveguide for gyrotron-traveling-wave tube amplifier applications[J]. Ieee transactions on electron devices,2009,56(5):839-845. |
| APA | Du, Chao-Hai,Xue, Qian-Zhong,Liu, Pu-Kun,&Wang, Ming-Hong.(2009).Modal transition and reduction in a lossy dielectric-coated waveguide for gyrotron-traveling-wave tube amplifier applications.Ieee transactions on electron devices,56(5),839-845. |
| MLA | Du, Chao-Hai,et al."Modal transition and reduction in a lossy dielectric-coated waveguide for gyrotron-traveling-wave tube amplifier applications".Ieee transactions on electron devices 56.5(2009):839-845. |
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来源：中国科学院大学
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