A Novel Coaxial Relativistic Backward-Wave Oscillator for Millimeter Wave Generation

Author

Yang, Wenyuan ; Dong, Zhiwei ; Dong, Ye ; Zhou, Haijing

Author_Institution

Inst. of Appl. Phys. & Comput. Math., Beijing, China

Volume

40

Issue

5

fYear

2012

fDate

5/1/2012 12:00:00 AM

Firstpage

1338

Lastpage

1343

Abstract

A novel coaxial relativistic backward-wave oscillator (C-RBWO) for millimeter wave generation is proposed and studied by simulation. In the proposed C-RBWO, a coaxial structure is used in the beam-wave interaction region. According to the dispersion relations in the slow-wave structure region, a new simple and effective reflector is designed for effective cutoff the backward-wave at the electron-injector end. Nonuniform corrugation depth is used to increase the efficiency. For an electron beam with 263-kV voltage and 610-MW power, about 80-MW output power is obtained by simulation at 96.2 GHz. The C-RBWO operates at a low magnetic field (3.7 T) below the cyclotron resonance value (about 10.2 T). The output efficiency is beyond 13%.

Keywords

backward wave oscillators; cyclotron resonance; dispersion (wave); millimetre wave oscillators; slow wave structures; C-RBWO; beam-wave interaction region; coaxial relativistic backward-wave oscillator; coaxial structure; cyclotron resonance value; dispersion relations; electron beam; electron-injector; frequency 96.2 GHz; magnetic field; millimeter wave generation; nonuniform corrugation depth; power 610 MW; reflector; slow-wave structure region; voltage 263 kV; Cyclotrons; Dispersion; Magnetic resonance; Oscillators; Physics; Plasmas; Power generation; Millimeter wave; numerical simulation; relativistic backward-wave oscillator (RBWO);

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2012.2188047

Filename

6170915