Design of broadband, low cost single layer reflectarray using phoenix cell

The design and implementation of a broadband single-layer low cost reflectarray is studied in this paper. The element in the reflectarray provides a nearly 360° linear phase range and have rebirth capability. The reflectarray is fed by a printed microstrip log-periodic dipole antenna. Using a sub-wavelength arrangement of element enables the reflectarray to achieve broadband characteristic. Then, a prime-focus 256-element reflectarray with phoenix cell is designed and measured. The maximum measurement gain is about 21dB at 5.2GHz. The measurement results also show 27.5% 3-dB gain bandwidth in the range 4.4~5.8GHz.