Abstract: The Uniform Geometrical Theory of Diffraction (UTD) is presented to analyze an airborne antenna radiation pattern. The method for setting the scatter model of an aircraft is put forward. The computation formula for the radiation field of the airborne communication antenna in the shadow region is carefully investigated. The computer program of the radiation pattern of an airborne communication antenna is designed. The airborne antenna radiation pattern can be computed rapidly and accurately. Taking the dipole antenna as an example, the radiation pattern of the antenna in different locations on the airborne surface is computed. The results presented in this paper can be used to study the optimization of the airborne antenna disposition.

Key words: dipole antenna, UTD, radiation pattern, aircraft