Optimization Design of the Radiation Device in a Microwave System for Asphalt Heating

First the precision model of radiation device in a microwave heater was simulated by CST Microwave Studio and the electrical fields were analyzed with the design theory of waveguide.Then the fixing position of magnetron and the structure of radiation device were optimized.The optimized results greatly reduce the reflected power compared with the precision model,and it is confirmed by experiments.The optimization not only satisfies the demand for heating efficiency,but also in favor of the service life of magnetron.