ABSTRACT
The paper deals with the design study of pillbox-type reduced waveguide RF window[1] for 5 GHz klystron. Numerical simulation of the window has been carried out using the software “CST MW Studio”. The proposed window is designed for 5 GHz operating frequency for handling a few kilowatts of RF power. The simulated results are validated through experiments. In the proposed window geometry, metalized alumina disc (99.5 % purity) of diameter 56 mm and thickness 1.5 mm is brazed in a cylindrical waveguide of diameter 56 mm. The cylindrical waveguide is terminated to WR 187 waveguide at its one end and 8 mm reduced height waveguide on the other end of the window. The return loss and insertion loss of the window length 26.7 mm has been found to be –34.88 dB and – 0.014 dB respectively. The bandwidth of 60 MHz is achieved.
