Design of Active Frequency Selective Surface with Curved Composite Structures and Tunable Frequency Response

Table 4

Simulation results and measurements of the proposed AFSS.

Incident wave	ON state			OFF state
	(GHz)	(dB)	–3 dB BW (GHz)	Isolation  (dB)
AFSS only
Normal	9.46	–0.59	2.08	30.96
TE 30°	9.51	–1.54	1.27	39.50
TM 30°	9.43	–1.88	1.20	28.90
AFSS with curved composite structure (R = 532 mm)
Normal	9.59	–0.67	2.55	17.07
TE 30°	9.51	–2.27	1.44	22.41
AFSS with curved composite structure (R = 100 mm)
Normal	9.65	–1.39	2.22	17.20
TE 30°	9.55	–2.21	1.23	16.36