A Modified Vivaldi Antenna for Improved Angular-Dependent Fidelity Property

Table 4

Fidelity factor of the improved antenna computed in E-plane and H-plane.

H-plane (𝜑=90)		E-plane (𝜑=0)
θ (degree)	Fidelity factor	θ (degree)	Fidelity factor
0	1	0	1
5	0.99995	5	0.99995
10	0.98976	10	0.99973
15	0.98881	15	0.99888
20	0.98655	20	0.99709
25	0.98285	25	0.99421
30	0.97808	30	0.99023
35	0.97300	35	0.98521
40	0.97008	40	0.97907
45	0.96478	45	0.97186
50	0.95924	50	0.96504
55	0.95839	55	0.96137
60	0.95966	60	0.96244
65	0.93783	65	0.96566
70	0.86216	70	0.96156
75	0.71946	75	0.93351
80	0.49866	80	0.86404
85	0.27054	85	0.74927