Output Performance of Coaxial X-band Magnetron

The megawatt power level X-band coaxial magnetron is designed. This paper describes a simple approach to calculating the initial dimensions of the coaxial magnetron by using empirical equations. The CST microwave studio is used for Eigenmode and particle in cell simulation. The diode characteristic (current verse voltage) is obtained for an in-directly heated oxide-coated cathode at different operating temperatures. It is found from the I-V characteristic that the operating anode voltage of this magnetron lies in the space charge limiting region. The output power of ~2MW for the 37kV anode voltage with a total efficiency of ~63% is obtained in the PIC simulation.