Design of a Novel TE31 to TM01 Mode Converter with High Power Capacity

摘要

A novel mode converter from TE31 mode to TM01 mode in circular waveguide is designed for high power microwave (HPM) system application in this paper. This mode converter is designed based on the mode matching analysis, where the tangential electric field and magnetic field components are continuous on the discontinuous interface of a circular-to-rectangular waveguide junction. The cylindrical TE31 mode is firstly transformed into six ways of rectangular TE10 mode, and then the six ways of TE10 mode are synthesized and converted into the output cylindrical TM01 mode. The maximum conversion efficiency can overreach 99% in the working bandwidth from 1.53GHz to 1.61GHz. The power capacity of this mode converter can reach 1.6GW when it inflates SF6 gas with one atmospheric pressure.