Research Article
Bandwidth Behavior of Closely Spaced Aperture-Coupled Reflectarrays
Table 5
Designed reflectarrays features. (operating frequency
= 20 GHz;
ratio = 1).
| Reflectarray configuration | | Δx | Patch substrate | Δtg(α) (/GHz) | 1-dB gain bandwidth |
| 1 | 12.6λ 0 | 0.6λ 0 | = 2.33
| | 6.7% | = 0.762 mm | 2 | 12.4λ 0 | 0.4λ 0 | = 2.33
|
−53
| 17% | = 0.762 mm | 3 | 12λ 0 | 0.48λ 0 | = 1.07
|
−37
| 23% | =1 mm |
|
|