Investigation on purification of high-power TM_0n mixed modes

Based on the operating principle of the original high-power mTM0n-TEM/TM01 mixed mode converters, which are specially designed on the certain TM0n mode content and relative phase, the investigation on purification of high-power TM0n mixed modes is carried out in this paper. With this method, TM0n mixed modes at GW level with any mode content and relative phase can be converted into pure TEM mode or TM01 mode. The original high-power mTM0n-TEM/TM01 mixed mode converters are optimally redesigned by the method proposed in this paper, the improved mode converters not only keep the original power capacity and bandwidth property, but also have a simplified structure.