Design and Analysis of Width-Modulated Two-Section Sine Waveguide for G-Band Traveling-Wave Tube

被引：5

作者：

Nayek, Narugopal ^{[1
,2
]}

Joshi, Mohit Kumar ^{[2
,3
]}

Sonkar, Ramesh Kumar ^{[2
]}

Tiwari, Tapeshwar ^{[1
]}

Bhattacharjee, Ratnajit ^{[2
]}

机构：

[1] SAMEER Ctr High Power Microwave Tube & Component, Gauhati 781039, India

[2] IIT Guwahati, Dept Elect & Elect Engn, Gauhati 781039, Assam, India

[3] LNMIIT, Dept ECE, Jaipur 302031, Rajasthan, India

来源：

IEEE TRANSACTIONS ON ELECTRON DEVICES | 2021年 / 68卷 / 12期

关键词：

Fabrication; Periodic structures; Impedance; Modulation; Attenuators; Dispersion; Scattering parameters; Particle-in-cell (PIC) simulation; sine waveguide TWT (SWGTWT); slow wave structure (SWS); THz vacuum electron devices (VEDs); width modulation; HIGH-POWER;

D O I：

10.1109/TED.2021.3117894

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：

A novel width-modulated sine waveguide traveling-wave tube (SWGTWT) is proposed for G-band operation. The broadband single-section and two-section SWGTWT are analyzed, which has the potential to address various technological challenges in the THz regime, such as fabrication difficulty, reflection, and attenuation of RF power. The two-section design has separate RF structures for input and output sections of the TWT, which helps to eliminate undesired reflection during high-power operation. The width modulation is employed to enhance the interaction impedance and also to realize the flat dispersion characteristic of the slow wave structure (SWS). The fabrication feasibility of the structure is demonstrated by fabricating the scaled structure at the Ku-band. A 20.4-kV, 50-mA cylindrical beam is employed in the particle-in-cell (PIC) simulation. The single-section structure offers a maximum power of 53 W with a 5.19% efficiency at 210 GHz. The peak power and a 3-dB bandwidth for the two-section structure are estimated to be 38.9 W and 32.5 GHz, respectively. The structure produces greater than 10 W of output power over a 46-GHz frequency band covering the range of 200-246 GHz.

引用

页码：6458 / 6464

页数：7

共 23 条

[1] Microwave tubes and applications [J].

Basu, B. N. ;

Datta, S. K. .

JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS, 2017, 31 (17) :1771-1774

[2] H-Plane and E-Plane Loaded Rectangular Slow-Wave Structure for Terahertz TWT Amplifier [J].

Billa, Laxma Reddy ;

Akram, Muhammad Nadeem ;

Chen, Xuyuan .

IEEE TRANSACTIONS ON ELECTRON DEVICES, 2016, 63 (04) :1722-1727

[3] Accurate parametric modeling of folded waveguide circuits for millimeter-wave traveling wave tubes [J].

Booske, JH ;

Converse, MC ;

Kory, CL ;

Chevalier, CT ;

Gallagher, DA ;

Kreischer, KE ;

Heinen, VO ;

Bhattacharjee, S .

IEEE TRANSACTIONS ON ELECTRON DEVICES, 2005, 52 (05) :685-694

[4] Broadband microwave and W-Band characterization of BeO-SiC and AIN-based lossy dielectric composites for vacuum electronics [J].

Calame, J. P. ;

Garven, M. ;

Lobas, D. ;

Myers, R. E. ;

Wood, F. ;

Abe, D. K. .

2006 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE HELD JOINTLY WITH 2006 IEEE INTERNATIONAL VACUUM ELECTRON SOURCES, 2006, :37-+

[5] Design and Fabrication of a Planar Helix Slow-Wave Structure for C/X-Band TWT [J].

Chua, Cier Siang ;

Zhao, Chen ;

Aditya, Sheel .

IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY, 2017, 7 (10) :1663-1669

[6]

CST AG Germany, CST STUD SUIT

[7] Experimental Verification of the Low Transmission Loss of a Flat-Roofed Sine Waveguide Slow-Wave Structure [J].

Fang, Shuanzhu ;

Xu, Jin ;

Yin, Hairong ;

Lei, Xia ;

Jiang, Xuebing ;

Yin, Pengcheng ;

Wu, Gangxiong ;

Yang, Ruichao ;

Li, Qian ;

Guo, Guo ;

Yue, Lingna ;

Zhao, Guoqing ;

Wang, Wenxiang ;

Xu, Xiong ;

Shen, Fei ;

Wei, Yanyu .

IEEE ELECTRON DEVICE LETTERS, 2019, 40 (05) :808-811

[8] Review of high-power microwave source research [J].

Gold, SH ;

Nusinovich, GS .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1997, 68 (11) :3945-3974

[9] Demonstration of a High Power, Wideband 220-GHz Traveling Wave Amplifier Fabricated by UV-LIGA [J].

Joye, Colin D. ;

Cook, Alan M. ;

Calame, Jeffrey P. ;

Abe, David K. ;

Vlasov, Alexander N. ;

Chernyavskiy, Igor A. ;

Nguyen, Khanh T. ;

Wright, Edward L. ;

Pershing, Dean E. ;

Kimura, Takuji ;

Hyttinen, Mark ;

Levush, Baruch .

IEEE TRANSACTIONS ON ELECTRON DEVICES, 2014, 61 (06) :1672-1678

[10] Terahertz Conductivity of Copper Surfaces [J].

Kirley, M. P. ;

Booske, John H. .

IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, 2015, 5 (06) :1012-1020

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