Simple Frequency Characteristic Evaluation of Shaped-Beam Design for Reflectarray Antenna

The analysis of the reflectarray antenna's frequency characteristics is a time consuming task. This is owing to the design of the size of the phasing elements, and the analysis of the reflection phase of the phasing elements. We propose a method for estimating the frequency characteristics of a reflectarray antenna by introducing aberration theory. The frequency characteristics can be estimated without the design consideration to phasing element size, and by the analysis of the reflection phase of phasing elements by the conditions of aberration theory. Therefore, in this paper, we propose a simple method to estimate the frequency characteristics of the reflectarray antenna that does not require element design estimates the frequency characteristics by using the desired reflection phase of our proposed design frequency.