Coaxial-waveguide gyrotron amplifier operating with high power and ultrahigh gain in Millimeter and submillimeter waves

Author

Zhang, Shi-chang ; Ouyang, Zheng-Biao ; Qiu, Chun-Rong ; Zhang, Hui-Bo ; Jin, Jian-Bo

Author_Institution

Inst. of Photoelectron., Southwest Jiaotong Univ., Sichuan, China

Volume

32

Issue

3

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

981

Lastpage

986

Abstract

A coaxial-waveguide gyrotron-traveling wave amplifier is proposed, which may be suitable for the operation in the spectrum of the short millimeter and submillimeter waves with good mode selectivity, high power, and ultrahigh gain. An example is presented in terms of the linear gyrokinetics and nonlinear simulations. Theoretical results show that tens of kilowatts with ultrahigh gain up to 67 dB might be achieved for the operation of the coaxial-waveguide mode TE_28,16 in the fundamental cyclotron harmonic at the frequency of 140 GHz. The power enhancement by a tapered magnetic field is discussed.

Keywords

amplification; coaxial waveguides; cyclotrons; gyrotrons; millimetre wave power amplifiers; particle beam dynamics; submillimetre wave amplifiers; travelling wave amplifiers; 140 GHz; 67 dB; TE₁₆; TE₂₈; coaxial-waveguide gyrotron-traveling wave amplifier; coaxial-waveguide mode; fundamental cyclotron harmonic; high power ultrahigh gain amplifier; linear gyrokinetics; millimeter waves; mode selectivity; nonlinear simulations; power enhancement; submillimeter waves; tapered magnetic field; Coaxial components; Cyclotrons; Eigenvalues and eigenfunctions; Equations; Frequency; Gyrotrons; High power amplifiers; Magnetic fields; Masers; Oscillators; Coaxial waveguide; gyro-TWA; gyrotron traveling wave amplifier; millimeter wave; submillimeter wave;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2004.828876

Filename

1321258