Novel spatial harmonic magnetrons and their potential applications

This paper provides an overview of our recent progresses in theory, design, simulation, and fabrication of novel metamaterial based spatial harmonic magnetrons. The approximate analysis which provides the guidelines for the design and predicts the important characteristics of these devices will be presented. This analysis shows that the metamaterial loaded SHMs can start generating power with very small cathode current densities which is very important for designing THz sources based on SHMs. A design example with the operation frequency of 43 GHz together with the PIC simulation and measurement results will be examined.