A C-Band Relativistic Magnetron With a Novel Extraction Structure

Relativistic magnetron (RM) is a promising high-power microwave (HPM) source and major hotspot in the field of HPM research, whose advantages include high efficiency, low magnetic field, and compact configuration. A C-band RM with a novel extraction structure is presented and investigated numerically in this article. Compared with the traditional C-band RM with rectangular extraction slots (CRMRS), the C-band RM with novel extraction slots (CRMNS) has three advantages. On the one hand, mode competition is suppressed effectually, and so its operation is more stable. On the other hand, the power efficiency is enhanced. Moreover, the power capacity is enhanced, which is advantageous to increase the output power. The typical simulation results are as follows: HPM is generated with a peak power of 2.53 GW at an efficiency of 58% and a frequency of 4.3 GHz, when the voltage is 650 kV, the current is 6.7 kA, and the magnetic field is 0.347 T.