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