Table 1 Parameters of the proposed antenna (mm)

L

35

W

40

L_f

13.05

W_f

2

r₁

12

r₂

10

L_c1

6.8

W_c1

3.2

L_c2

3.2

L_{c1_1}

11.6

W_{c1_1}

2

W_{_gnd}

12

Gap1

0.6

Gap2

7.5