SELF-EXCITATION OF SPURIOUS OSCILLATIONS IN THE DRIFT REGION OF GYROTRON AND THEIR INFLUENCE ON GYROTRON OPERATION

被引：24

作者：

ANTAKOV, II

GACHEV, IG

ZASYPKIN, EV

机构：

[1] The Institute of Applied Physics, Russian Academy of Science, 46 Uljanov St.

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 1994年 / 22卷 / 05期

关键词：

Circuit oscillations - Electric excitation - Frequency stability - Magnetic field effects - Mathematical models - Microwave oscillators - Spurious signal noise;

D O I：

10.1109/27.338303

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Stable operation of gyrotron devices is often limited by spurious oscillations in the drift region where the external magnetic field is nonuniform. Analytical expressions for start-oscillation currents and frequencies of auto-oscillations in gyrotrons with weakly inhomogeneous dc magnetic fields have been published. These expressions are used to calculate the starting currents and frequencies of the spurious oscillations excited in the drift region of a TE(021) mode gyrotron. The results of numerical simulations are in agreement with experimental measurements of spurious oscillations in our gyrotron. It is shown that self-excitation of these spurious oscillations leads to a sharp decrease in efficiency due to mode competition between desired and spurious modes.

引用

页码：878 / 882

页数：5

共 7 条

[1] PERFORMANCE-CHARACTERISTICS OF A HIGH-POWER X-BAND 2-CAVITY GYROKLYSTRON [J].