Lateral interference level prediction method based on amplitude-phase synthesis of sub-aperture

Taking the array element antenna in the receiving phased array for the coupling object, we simulated and analyzed the coupling level and phase in emitting spectrum from the sub-aperture of the emitting phased array. Base on the amplitude-phase synthesis theory, the coupling level of the receiving array element antenna was predicted when full-aperture of phased array emitted. And the estimated results were compared with the simulated experiment results. The results show that the prediction method is reasonable. Compared with the conventional full-wave solution method, our prediction method can calculate directly. Furthermore, the method has no limitation in the number of array elements and complexity of model, and can meet the engineering requirements of accuracy and efficiency well.