Abstract: The asymptotic waveform evaluation (AWE) technique is applied to deal with wire-surface junction configurations broadband electromagnetic radiation problems in this paper. To ensure the current continuity, three different basis functions are used for surface, wire and junctions. And impedance and high-order derivative formulas of wire-surface attachment are derived. The MoM is used to solve the surface electric current density at a given frequency and obtain the current distribution at the given frequency point. Using of Pade approximation, the electromagnetic radiation properties can be obtained within a frequency range. The numerical results are compared with the results by MoM point-by-point calculations.The proposed method can greatly reduce the computation time without loss of accuracy.