A Wideband Feed Network for Vivaldi Antenna Arrays

Table 3

Comparison of different four element wideband arrays.

	Frequency band (GHz)	Useable bandwidth (%)	Maximum gain (dBi)
UWB monopole [4]	2.35–6.1	88.76	10.5
Vivaldi array [5]	3.4–8.3	83.80	12.6
Compact wideband array [6]	8.9–10.9	20.2	10.6
SIW fed array [7]	11.2–13.6	19.35	17.1
Magneto-electric-like array [8]	24.5–40	48	12.65
Proposed antenna array	1.3–8	144.09	13.8