Open AccessField matching analysis of abrupt cavities with absorbing materials
Author(s) -
Yanhong Luo,
Hongfu Li,
Xie Zhong-Lian,
Yunlong Sheng,
Xue Deng,
Zhou Qing,
Xu Yong
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.229
Subject(s) - attenuation , microwave , bandwidth (computing) , materials science , optics , field (mathematics) , resonance (particle physics) , transmission loss , dispersion (optics) , computational physics , acoustics , physics , optoelectronics , computer science , telecommunications , atomic physics , mathematics , quantum mechanics , pure mathematics
Absorbing material is used to reduce the Q factors of resonant cavities, enhance the bandwidth and restrain the competitive modes in high-power microwave devices. In this paper, solving field in absorbing material and field matching method were used to derive the dispersion equation in waveguides and field matching formulas of hybrid modes (HEM) in an abrupt cavity with absorber. Based on the theoretical analysis, numerical simulations of the cavities in gyroklystrons were done.The influence of absorber on transmission and attenuation in waveguides, the loss and resonance characteristic and quality factors in cavities has been studied. The main results are presented.