Układ zastępczy i charakterystyki elektrodynamiczne mikrofalowego aplikatora plazmowego typu rezonator wnękowy (915 MHz)

We present equivalent circuit of existing cavity-resonant type microwave plasma applicator. The applicator can be used for conversion of hydrocarbons into hydrogen. It operates at atmospheric pressure and frequency of 915 MHz. There are two electrodes mounted in reduced height waveguide. Between the electrodes the electric field is enhanced. One of essential characeteristics of any microwave plasma applicator is power transfer from the feeding line to the plasma. It can be expressed as ratio PR / PI, where PI and PR are the power of the incident and reflected waves, respectively. Tuning characteristics of the microwave applicator is a dependence of PR / PI on the position of the movable short normalized to the wavelength. The equivalent circuit includes formulas which allow to calculate tuning characteristics of discussed cavity-resonant-type microwave applicator. The calculated tuning characteristics are very similar to those obtained from an experiment.