Harmonic Suppressed Slot Antennas Using Rectangular/Circular Defected Ground Structures

Figure 2

Different slots for DGS: (a) rectangular DGS, (b) square head DGS (dumbbell shape), (c) triangular DGS, (d) circular DGS, (e) H shape DGS, and (f) spiral DGS.

(a)

(b)

(c)

(d)

(e)

(f)