Spacial polarization characteristics of antenna

Based on interpreting the conception of antenna´s spacial polarization especially for instantaneous polarization detailedly, the description framework of spacial polarization characteristics for antenna is introduced in this paper. Some classical descriptors and instantaneous descriptors are given. On the basis of this, the spacial polarization characteristics of theoretical orthogonal dipole antenna and a practical jammer antenna is analyzed. The corresponding computer simulation is completed. The result indicates that antenna´s polarization characteristics often changes by rule in different radiation direction. The research in this paper also provide theoretical base and support for the application of the spacial polarization characteristics of antenna.