Table 1 Numerical results and comparison between the different design possibilities for reflectarrays.

Amplitude/power of waves sent into the respective directions, absorption coefficient, and power efficiency.

θiθr−θrAbsorptionEfficiency
Generalized reflection law (Eq. 1)0.24/0.061.50/0.760.73/0.180.0075.7%
Lossy design dictated by Eq. 20.00/0.001.00/0.340.00/0.000.6634.0%
Active-lossy design dictated by Eq. 30.03/0.001.77/1.040.11/0.000.00104.4%
Inhomogeneous leaky-wave antennas introduced in this paper0.04/0.001.70/0.990.03/0.000.0099.7%
Implementation with metal patches (lossy materials)0.04/0.001.66/0.940.03/0.000.0694.0%