Study Of The Field Of Crossed-Field-Anteenas

Crossed-Field-Antennas is a new kind of medium wave antenna,its electromagnetic waves are synthesized or captured in a small volume by two separately fed electrode systems,one produces the electric field,and the other produces the magnetic field. CFA is not a resonance antenna. Compares to the traditional antenna,it has many merits, such as small size, hige transmitted efficiency,more ground wave and friendly EMC.In this paper, we will analyse the field of CFA,and the relation of field and size.CFA are calculated with Charge Simulation Method (CSM)and Maxwell equation in this paper. through which we will obtain the electic field,magntic field and Poynting vector.Then the effection of CFA's size to field can sun up.We use DFP to optimize CSM,and obtain the rule of choosing the charge simulations.The optimization CSM is programmed with the blend of C++ and Matlab languages, which combines the merits of the two languages. So the program is both simple and fast computing, that make it a powerful tool of studying CFA. The esults are accord well with the known conclusion, which prove the validity of the CSM program.