Flexible Sierpinski Carpet Fractal Antenna on a Hilbert Slot Patterned Ground

Table 1

Detailed comparison between performances of the proposed fractal and the conventional patch antenna, for both the planar and the folded cases.

Antenna type	Modification	f r [GHz]	Δf r [%]	FBW [%]	ΔFBW [%]	S11 [dB]
Fractal	Planar	1.9850	—	5.37	—	−25.7
	1	2.0120	1.36	4.02	−25.14	−14.7
	2	2.0120	1.36	5.13	−4.47	−20.8
	3	2.0525	3.40	n/a	n/a	−9.4
	4	2.0255	2.04	4.42	−17.69	−16.3
Patch	Planar	1.9445	—	9.8	—	−34.4
	1	1.9985	2.78	8.1	−17.35	−18.4
	2	1.9915	2.42	8.35	−14.80	−22.5
	3	2.0770	6.81	6.42	−34.49	−23.6
	4	2.0295	4.37	7.83	−20.10	−33.5