Study On Circular Polarization Microstrip Antenna With Space Mapping Algorithm

Antenna is important for the entire communication system, in recent years, the study of antenna has become a very popular topic. According to the different methods of polarization,Antenna can be divided into linear polarization antenna, circular polarization antenna and elliptic polarized antenna. Most of polarization are linear polarization and circular polarization antenna. Compared with the linear polarization antenna, the circular polarization antenna is being more and more widely used in satellite communications, GPS,TV, radio, etc.The article simply introduces the basic idea of space mapping algorithm, the development course, and application prospect. Compared the advantages and disadvantages of several kinds of space mapping algorithm, in view of the coarse model, this paper introduces the several methods of antenna with empirical formula, empirical formula as the rough model may be used. With no experience formula of the antenna, if microstrip structure can establish equivalent model in ADS software, can use its ADS equivalent model as the rough model. For neither empirical formula, and its ADS can not be established the equivalent model of the antenna, we can use kriging interpolation method to construct its response surface approximation as a rough model, which greatly expanded the space mapping algorithm to optimize the application range of the antenna.In this paper, the design research of X-band circular polarization antenna arrays. By adopting the combination of corner cut and chamfered way to realize the circular polarization antenna. At the same time, we design a broadband multi-layer structure, circular polarization antenna using Wilkinson power divider with equal amplitude, phase difference of 90 ° incentives, Through the aperture coupling to feed of radiating element, obtaining the good performance of circular polarization antenna. Optimization of antenna optimization algorithm is applied to space mapping, in the example can be reflected in the quickness,accuracy and efficiency of optimization algorithm.