Impact Analysis and Calibration Methods of Excitation Errors for Phased Array Antennas

Phased array antennas have played a very important role in many different areas and applications. It requires precise excitation of each antenna element by various synthesis techniques to obtain desired pattern features. However, due reasons such as manufacturing imperfections, component aging, temperature variation, the realistic inevitably differs from their expected values practice. This paper presents tutorial-like review deal with errors for phased antennas. Two kinds analysis methods, probabilistic methods interval arithmetic (IA) based are presented evaluate effects State-of-the-art calibration along signal processing reviewed, advantages challenges discussed comparative manner. Some other common open research directions also presented.