Fractal Reflectarray Antennas: State of Art and New Opportunities

Table 1

Selected approaches for fractal reflectarray unit cell implementation and qualitative analysis of a few related features.

Phase tuning approach	Miniaturization level	Phase range	Reflection loss
Variable size fractal patch
Single layer	Moderate	Moderate	Low
Dual-layer or multiband	Poor	Very good	Low
Fixed size fractal patch with variable length slot	Good	Good	High
Fixed size fractal patch with variable scaling factor	Very good	Good	Low