Optimization of tunable bandwidth of agile relativistic magnetron

This paper focuses on two factors of 0-harmonic component and modes interval in frequency-agile relativistic magnetron under thermal cavity condition by way of example of 10 cavites rising-sun magnetron. Based on the analysis of these factors, it suggests to optimize the tunable bandwidth by balancing the effective impedance, adjusting the cavity and opening the anode port face,and reduce 0-harmonic component. The simulation result shows that the frequency-agile range increases from 380 MHz to 900 MHz after using the above mentioned methods．