[IEEE 2019 IEEE 2nd International Conference on Electronic Information and Communication Technology (ICEICT) - Harbin, China (2019.1.20-2019.1.22)] 2019 IEEE 2nd International Conference on Electronic Information and Communication Technology (ICEICT) - Method of waveguide port excitation producing appointed direction wave in FEM calculation

摘要： The calculational formulations of exciting appointed direction wave for finite element method are presented. Based on two dimensional finite element method, modes fields of electrical field and magnetic field are achieved firstly. Equivalent source of electric and magnetic current sources are presented simultaneously, which ensure the sole direction of wave that one wants. The calculating results validate the correctness of formulation and method.