Design of a New Millimeter Wave Paraboloidal Reflector Antenna Using MLFMM

In general, geometrical-optics and physical-optics were used to analyze paraboloidal reflector antenna. Good numerical results will be obtained by using these two methods for electrically large paraboloidal reflector antenna; however the feeding structure is omitted. The numerical results are not in agreement with experimental results, when the feed structures have strong impact on radiation. The method of moment (MOM) accelerated with multilevel fast multipole method (MLFMM) is a full wave analyzing method and can simulate the pattern of electrically large paraboloidal reflector antenna combined with feed structure. A new type of millimeter paraboloidal reflector antenna is designed through MLFMM analysis. Numerical results are compared with the experimental results, and the comparison shows excellent agreement over a wide angle. The simulation provides good guide for optimizing design and reduces the work of experiment adjustment.