Tunable Reflectarray Cell for Wide Angle Beam-Steering Radar Applications

Table 1

Element stratification.

Layer	Element designed in [7]; Δ𝑥×Δ𝑦=0.7𝜆0×0.7𝜆0		Element designed in this work; Δ𝑥×Δ𝑦=0.46𝜆0×0.46𝜆0
	Material	Thickness	Material	Thickness
Patch	Copper	35 𝜇m	Copper	35 𝜇m
Antenna substrate	𝜀𝑟1=2.33	𝑡=0.762 mm	𝜀𝑟1=2.33	𝑡=0.762 mm
	Air	𝑑=0.762 mm	Air	𝑑=0.762 mm
Ground plane with slot	Copper	35 𝜇m	Copper	35 𝜇m
Phasing line substrate	𝜀𝑟2=2.33	ℎ=0.762 mm	𝜀𝑟2=6	ℎ=0.762 mm
Phasing line	Copper	35 𝜇m	Copper	35 𝜇m