In the given figure 2, simulated and measured S11 plots of an

antenna designed are given.

i. Simulated without defected ground

structure (DGS), ii. simulated with DGS,

iii. Measured with DGS.

State the impedance bandwidth of these three S11 plots and the

points where resonances occur in each plot.

13.

$11 (dB)

-10

-20

-30

-40

24

26

28

Simulated without DGS

Simulated with DGS

-Measured with DGS

30

32

Frequency (GHz)

Figure2: S11 vs. frequency plot of the

antenna.

34 36 38 40