Research Article
A Novel Universal Applicability Design Method for Low Cross-Polarization Terahertz Tri-Reflector CATR
Table 3
Quiet zone performance of the four designed tri-reflector CATRs corresponding to four different feed rotation angles (the QZ usage is 70%).
| Feed rotation angles (°) | Frequency (GHz) | Copolar amplitude ripple (dB) | Copolar phase ripple (°) | Cross-polar (dB) |
| 0 | 100 | 0.52 | 4.42 | −47.59 | 200 | 0.39 | 3.12 | −47.71 | 300 | 0.33 | 2.81 | −47.58 | 400 | 0.35 | 2.07 | −47.48 | 500 | 0.27 | 1.83 | −47.67 |
| 30 | 100 | 0.69 | 6.86 | −45.94 | 200 | 0.68 | 4.45 | −47.84 | 300 | 0.63 | 3.78 | −49.39 | 400 | 0.54 | 3.65 | −50.94 | 500 | 0.48 | 3.69 | −50.54 |
| 60 | 100 | 0.63 | 5.71 | −42.48 | 200 | 0.54 | 3.82 | −43.21 | 300 | 0.47 | 3.39 | −43.35 | 400 | 0.39 | 2.97 | −43.37 | 500 | 0.36 | 2.77 | −43.79 |
| 90 | 100 | 0.54 | 5.12 | −37.83 | 200 | 0.52 | 4.37 | −38.34 | 300 | 0.47 | 4.03 | −38.48 | 400 | 0.39 | 3.68 | −38.37 | 500 | 0.31 | 2.78 | −38.71 |
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