Pattern Correction of Impaired Antenna Array Based on Mixed Integer Programming

The impairment of active antenna arrays will lead to the deterioration of their radiation patterns. In this paper, a method based on mixed integer programming (MIP) is proposed to correct patterns of impaired linear antenna arrays. The proposed method uses a fast branch and bound (B&B) process to achieve the low sidelobe pattern correction while the minimization of the number of corrected elements is maintained. Compared with the existing pattern correction techniques, the proposed method exhibits the more superior performance in terms of pattern consistency and number of corrected elements.

I. Introduction

Active phased array antenna is widely used in military and civil applications. By adjusting the phase shifter and attenuator of each array element, the amplitude and phase distribution of the antenna array can be controlled, and thus a desired far-field pattern can be achieved [1] [2].