Design of High Gain and Broadband Antennas at 60 GHz for Underground Communications Systems

Table 2

Comparisons of the results of antenna 5 and antenna 8 obtained with HFSS and CST.

	Antenna 3	Antenna 4
𝑓𝐿 using CST (GHz)	59.98	58.20
𝑓𝐿 using HFSS (GHz)	58.25	59
𝑓𝐻 using CST (GHz)	61.9	62.68
𝑓𝐻 using HFSS (GHz)	64	62.25
Bandwidth using CST (%)	13.50	14.36
Bandwidth using HFSS (%)	16.63	14.80