ANN Synthesis Model of Single-Feed Corner-Truncated Circularly Polarized Microstrip Antenna with an Air Gap for Wideband Applications

Table 5

Comparisons of results of MLP-based synthesis model, HFSS simulation, and measurements. (𝐻_𝑎=2.5 mm, 𝐻_𝑑=1.5 mm, 𝜀_𝑟=2.61, and tan𝛿=0.003).

Required frequency	Outputs of synthesis model		Simulated		Measured		|𝑓0−𝑓𝑠|/𝑓0 (%)	|𝑓0−𝑓𝑚|/𝑓0 (%)
𝑓0 (GHz)	𝐿 (mm)	𝐿𝑡 (mm)	𝑓𝑠 (GHz)	AR𝑠 (dB)	𝑓𝑚 (GHz)	AR𝑚 (dB)
1.575	76.59	9.97	1.560	0.05	1.594	1.47	0.95	1.21
2.445	47.77	7.58	2.402	0.82	2.487	0.54	1.76	1.72
3.000	38.12	6.66	2.935	0.89	3.048	0.95	2.17	1.60