单层柱状等离子体阵列对微波透射衰减影响的实验研究  

Influence of One-Layer Cylindrical Plasma Array on Microwave Transmission Attenuation

作　　者：程立[1] 时家明[1] 汪家春[1] 袁忠才[1] 许波[1] 

机构地区：[1]脉冲功率激光技术国家重点实验室电子工程学院安徽省红外与低温等离子体重点实验室,合肥230037

出　　处：《真空科学与技术学报》2014年第2期183-185,共3页Chinese Journal of Vacuum Science and Technology

摘　　要：利用矢量网络微波测试系统测量了单层柱状等离子体阵列对2～18GHz微波的透射衰减，分析了微波极化方向、等离子体密度、阵列中的单元间距等因素对微波衰减的影响。结果表明，该结构对Ⅲ波的衰减大于对TE波的衰减；对TM波的作用频段约为2—10GHz，而对TE波仅为2～7GHz；在作用频段内，增大电子密度、减小单元间距均可以在整体上改善对微波的透射衰减。The influence of the one-layer cylindrical plasma array on microwave transmission attenuation was experimentally studied with the lab-made, vector network microwave measurement system in the frequency range from 2 GHz to 18 GHz. The impacts of the key factors, including the micro- wave polarization, electron densities, and structure of the array, on the transmission attenuation were evaluated, respectively. The results show that when it comes to the transmission attenuation, the array affects the transverse magnetic （TM） wave more effectively than the transverse electric （TE） wave. The effective frequency ranges were found to be 2 - 10 GHz for the TM wave and 2 - 7 GHz for the TE wave, respectively. In addition, an increase of the electron density and a decrease of the cell separation considerably improved the attenuation in the effective frequency ranges.

关 键 词：柱状等离子体 阵列 透射衰减 极化方向 电子密度 阵列间距 

分 类 号：O539[理学—等离子体物理]