Reflectarray elements with low cross polarization for dual-polarization and wideband use

This paper proposes new reflectarray elements for dual-polarization wideband use. These elements provide low cross polarization property and almost linear phase property for the frequency, thereby achieving the desirable reflection phase over the wide frequency range. To verify effectiveness of the proposed elements, a reflectarray with offset feed is constructed by them, and also is wideband frequency characteristic is confirmed numerically and experimentally.