Frequency Bandwidth Narrowing Technology for Pulsed Magnetrons

Technological developments in the design of unmodulated pulsed magnetrons have resulted in a dramatic improvement in the reduction of unwanted emission levels produced by these devices. This achievement is necessary to meet the increasing world demand of more efficient use of the radio frequency spectrum, which is seen today as a limited resource. Recently developed improved magnetrons utilize new techniques to reduce the unwanted emissions while also improving the spectrum in the utilized frequency bandwidth. This paper provides a detailed explanation of the processes and methodology used to achieve the reduction in unwanted emission levels for these unmodulated pulsed magnetrons. Additionally, we explain the theory of operation and the achieved results. The improved technology has already been utilized successfully on a commercial level worldwide over the last few years in radar systems operating in the S- and X-bands at power levels from 2 to 60 kW.