Abstract:

To meet with the requirements of designing a wide bandwidth, wide beam KuBand microwave antenna, parallel Genetic Algorithms (GA) and an improved software NEC2 are used in this article. The parallel computing system in this design is composed of several PCs and the message passing protocols among PCs are  MPI. The NEC2 software based on the method of moments is used as a numerical calculation method. Designing a wide bandwidth, wide beam width and circularlypolarized microwave KuBand antenna by the traditional methods is difficult ［1］. However, the singlebranch KuBand antenna with 7segments which is designed by parallel GAs in a very short design period in this article, has an excellent performance in both patterns and VSWR.

Key words: genetic algorithm;wide bandwidth;parallel;microwave antenna