Attenuation of Microwave Radiation by Post-Anode Plasma in a Composite Grid Electrode Structure

• Published in: IEEE access Vol. 10; pp. 7675 - 7683
• Main Authors: Lyu, Xingbao, Yuan, Chengxun, Avtaeva, Svetlana, Kudryavtsev, Anatoly, Yao, Jingfeng, Liu, Yangguo, Zhou, Zhongxiang, Wang, Xiaoou
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Anodes; Atmospheric models; Attenuation; Cathodes; composite cathode; current-voltage characteristics; Discharges (electric); Electric potential; Electrodes; Electromagnetic radiation; Electromagnetic scattering; Frequency ranges; Grid anode; Helium; Microwave attenuation; Paschen curves; Plasma; Plasmas; Radiation; Voltage; Wave attenuation
• ISSN: 2169-3536; 2169-3536
• DOI: 10.1109/ACCESS.2022.3143582

This paper presents a new composite grid electrode structure for the generation of plasma that is suitable for modeling microwave radiation transmission through atmospheric plasma. The new grid anode-composite cathode (GA-CC) structure is to be contrasted with the ordinary grid anode-cathode plate (GA-CP) structure. It is found that the breakdown voltage of the new GA-CC electrode structure is lower than that of the GA-CP structure and is a bit shifted to the right on the Pd -axis. An advantage of the GA-CC structure over the GA-CP structure is that it requires a lower voltage to generate the same current. It is found that plasma generated by the new GA-CC structure selectively strengthens electromagnetic waves attenuation in the frequency range of 9-12 GHz.