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As microwave energy has been applied more and more widely in industry,agriculture, chemistry and medical science, the microwave cavity with more uniformdistribution of the field is becoming more and more interesting. In microwaveapplication, especially in the investigation of applying microwave plasma to diamondfilm production and treatment of seeds or other materials, the uniform field in thecavity is expected. But unfortunately, in an ordinary cavity with conductor walls, the
As microwave energy has been applied more and more widely in industry, agriculture, chemistry and medical science, the microwave cavity with more uniform distribution of the field is more and more interesting. In microwaveapplication, especially in the investigation of applying microwave plasma to diamondfilm production and treatment of seeds or other materials, the uniform field in the cavity is expected. But unfortunately, in an ordinary cavity with conductor walls, the