2008•Acta Physica SinicaOpen access

Measurement and analysis of plasma antenna input impedance

Zhiwei Liang, Sun Hai-Long, Zhijiang Wang, Jie Xu, Xu Yue-Min, 中国科学院空间科学与应用研究中心，北京 100080

Abstract

The frequency dependence of plasma-column antenna input impedance has been measured by a vector network analyzer with different applied exciting power. The experimental results show obvious resonance behavior of the impedance. The effect of plasma parameters on the input impedance was established by means of an equivalent circuit model and the characteristics of input current. This method is useful for the research of plasma antenna dynamic reconfiguration and the realization of fast impedance matching.

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Key concepts: Impedance matching, Antenna (radio), Electrical impedance, Antenna tuner, Input impedance, Damping factor, Acoustics, Power (physics)