Comparison between the antenna parameters obtained from Jafar R [14], optimized design, and the design with curved reflector.

Table 2: Comparison between the antenna parameters obtained from Jafar R [14], optimized design, and the design with curved reflector.

Parameter	Value	Optimized design	Curved reflector
Gain	~12 dB	~ 12 dB	~ 12 dB
Directivity	~12 dB	~ 12 dB	~12 dB
VSWR	~ 5 dB > 2	1.5	1.3
S₁₁	> -10 dB	-26 dB	-28 dB
Area	300 mm × 100 mm	180 mm × 100 mm	180 mm × 80 mm
Substrate	Є_r = 2.17 & t = 1.6 mm	Є_r= 2.2 & t = 1.57 mm	Є_r = 2.2 & t = 1.57 mm
Element	Cu material, σ = 5.96 × 10⁷ S/m	Cu material, σ = 5.96 × 10⁷ S/m	Cu material, σ = 5.96 × 10⁷ S/m