Resonant Elements for Tunable Reflectarray Antenna Design

Table 1

Performance comparison for different resonant elements of reflectarray.

Resonant element	Reflection loss (dB)	Dynamic phase range			Volume reduction at 10 GHz (%)
		𝑓𝑜 (GHz)	Measured (degrees)	Simulated (degrees)
Rectangular patch	1.50	—	—	—	—
Circular slot (R = 1.5 mm)	1.75	9.75	104	110	5.24
Circular slot (R = 2.0 mm)	2.20	9.45	290	298	9.19
Circular slot (R = 2.5 mm)	2.50	9.25	310	314	15.76
Circular slot (R = 3.0 mm)	2.65	9.10	320	323	22.15