Study on rectangular waveguide grating slow-wave structure with cosine-shaped grooves

被引:0
|
作者
Lu, Zhigang [1 ]
Gong, Yubin [1 ]
Wei, Yanyu [1 ]
Wang, Wenxiang [1 ]
机构
[1] Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Peoples R China
来源
CONFERENCE DIGEST OF THE 2006 JOINT 31ST INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 14TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS | 2006年
关键词
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Recently, a new need for high-frequency, highpower sources has been emerging for advanced radar and communication needs, with frequencies in the band between 100 and 300GHz and peak powers as high as several hundreds of kilowatts, and with bandwidth of up to 10%. After investigation of the interaction mechanisms of different slow-wave structures, the rectangular waveguide grating SWS has attracted the scholar's interest due to some of its peculiarities: the scalability to smaller dimensions and shorter wavelengths, high precession of manufacturing and assembling, super thermal conductivity and low loss, which make it worth consideration, especially at millimeter-wave frequency-band. From the investigation of the different structures, such as V-type, cosine-type, dovetail-type, etc., the cosine-shaped groove SWS has the weakest dispersion and the widest bandwidth. In this paper, this type of structure was analyzed. A longitudinal cross section configuration is shown in Fig. 1. s is the width at the mouth of the groove, L is the period and L=s, b and p are waveguide height and groove depth, respectively. The width of the rectangular waveguide is represented by a. Expressed in terms of rectangular coordinates, the space of the rectangular waveguide grating SWS with cosine-shape grooves can be divided into two parts: interaction region I and groove region II. By means of an approximate field-theory analysis, the expressions of dispersion equation and coupling impedance are derived. In order to check the calculated results, the three dimensional electromagnetic simulation software CST was used for comparison. As shown in Fig. 2, the smooth curve represents the theoretical results, and the triangular points demonstrate the results given by CST simulations. It is obvious that the CST simulation data are in agreement with the theoretical results, which support our theory. Finally, numerical calculation shows that the bandwidth of the cosine-shaped groove SWS is much wider than that of rectangular-shaped groove one. And reducing the groove-width can broaden the frequency-band and decrease phase-velocity, while increasing the groove-depth can also decrease phase-velocity. For above cases, the coupling impedance is more than 16 Omega.
引用
收藏
页码:257 / 257
页数:1
相关论文
共 50 条
  • [41] STUDY OF THE SLOW-WAVE STRUCTURE AS AN ICRF LAUNCHER
    CHIU, SC
    MOELLER, CP
    CHAN, VS
    BLAU, FP
    NUCLEAR FUSION, 1984, 24 (06) : 717 - 723
  • [42] Analysis of W-band folded waveguide slow-wave structure
    Cai, J
    Feng, JJ
    Li, BY
    Liao, FJ
    IEEE 2005 International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications Proceedings, Vols 1 and 2, 2005, : 740 - 743
  • [43] A DESIGN ANALYSIS OF SPLIT-FOLDED WAVEGUIDE SLOW-WAVE STRUCTURE
    GANDHI, OP
    KHANDELWAL, DD
    INTERNATIONAL JOURNAL OF ELECTRONICS, 1965, 19 (03) : 253 - +
  • [44] Design of Folded Double-Ridged Waveguide Slow-Wave Structure
    Zhang, Wenxin
    Wang, Yanmei
    Qu, Bo
    2018 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC), 2018, : 85 - 86
  • [45] WAVEGUIDE-CAVITY MODEL OF COUPLED CAVITY SLOW-WAVE STRUCTURE
    LOMAKIN, OE
    MUKHIN, SV
    SOLNTSEV, VA
    RADIOTEKHNIKA I ELEKTRONIKA, 1988, 33 (08): : 1637 - 1642
  • [46] A Novel Quadruple Corrugated Waveguide Slow-Wave Structure for Terahertz Applications
    Latif, Jibran
    Wang, Zhanliang
    Gong, Yubin
    Jameel, Atif
    Nadeem, Muhammad Khawar
    Ali, Bilawal
    IEEE ELECTRON DEVICE LETTERS, 2024, 45 (10) : 1989 - 1992
  • [47] Modified Corrugated Rectangular Slow-wave Structure for THz Traveling Wave Tube Amplifier
    Billa, Laxma R.
    Shi, Xianbao
    Akram, Muhammad Nadeem
    Chen, Xuyuan
    2016 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC), 2016,
  • [48] A Forward-Wave Oscillator Based on Folded-Waveguide Slow-Wave Structure
    Yin, Hairong
    Xu, Jin
    Yue, Lingna
    Gong, Yubin
    Wei, Yanyu
    IEEE TRANSACTIONS ON PLASMA SCIENCE, 2017, 45 (01) : 24 - 29
  • [49] A SLOW-WAVE STRUCTURE AT ULTRAMICROWAVES
    GANDHI, OP
    PROCEEDINGS OF THE IEEE, 1963, 51 (02) : 372 - &
  • [50] An Equivalent Circuit Analysis for Staggered Double-grating Slow-wave Structure
    Li, Jinlei
    Luo, Jirun
    Fan, Yu
    2017 EIGHTEENTH INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC), 2017,