Table 1 Radiation characteristics of the proposed antenna for different values of cell-cluster dimensions.
From: Analysis and design of terahertz reflectarrays based on graphene cell clusters
No | Cell-cluster dimension | Side lobe level in ϕ = 0◦ plane (dB) | Angular beamwidth in ϕ = 0◦ plane (deg) | Directivity (dBi) | Efficiency (%) |
|---|---|---|---|---|---|
Main-lobe-direction: 0Deg | |||||
1 | 3*3 | − 13.3 | 5.2 | 32.1 | 91.6 |
2 | 6*6 | − 13.3 | 5.2 | 32.1 | 91.6 |
3 | 9*9 | − 13.3 | 5.2 | 32.1 | 91.6 |
4 | 12*12 | − 13.3 | 5.2 | 32.1 | 91.6 |
Main-lobe-direction: 15Deg | |||||
5 | 3*3 | − 13.5 | 5.3 | 32.0 | 85.6 |
6 | 6*6 | − 13.6 | 5.3 | 32.0 | 85.4 |
7 | 9*9 | − 13.6 | 5.3 | 32.0 | 85.7 |
8 | 12*12 | − 12.7 | 5.3 | 32.0 | 84.9 |
Main-lobe-direction: 30Deg | |||||
9 | 3*3 | − 12.9 | 6 | 31.5 | 85.1 |
10 | 6*6 | − 12.9 | 6 | 31.5 | 86.1 |
11 | 9*9 | − 13.2 | 6 | 31.5 | 82.7 |
12 | 12*12 | − 12.2 | 6 | 31.5 | 82.0 |
Main-lobe-direction: 45Deg | |||||
13 | 3*3 | − 12.9 | 7.2 | 30.5 | 81.9 |
14 | 6*6 | − 12.6 | 7.2 | 30.5 | 80.7 |
15 | 9*9 | − 12.8 | 7.2 | 30.5 | 80.5 |
16 | 12*12 | − 11.9 | 7.4 | 30.5 | 77.7 |
