Ultra-Compact Slitted Flower-Shaped Dual-Band Monopole Antenna for Modern Portable Devices

Table 2

MSB antenna’s comparative analysis with the existing works in the literature.

Ref.	Year	GW size	Frequency (GHz)	Antenna gain	Efficiency (%)	Techniques
[29]	2019	0.54 × 0.62	2.4/3.5/5.5	2.25/3.72/2.71	NR	Split ring resonant array
[1]	2021	0.11 × 0.17	2.3/5.8	0.62/2.2 dBi	93.67/99.87	AMF and GPS
[28]	2020	0.42 × 0.49	3.59/5.53+	3/3.6 dBi	93/87	C-SRR, H-CRR, and ACGP
[20]	2021	0.99 × 0.58	1.5/2.45/3.85/5.13/5.8	2.7/4.8/4.1/2.5/4.2 dB	NR	Window grille shape
[30]	2022	1.14 × 1.14	5.5	2.5	85	L-shaped monopole with J-shaped DGS
[31]	2022	0.86 × 0.21	1.57/2.4/3.5/5	NA	NA	Slot resonator
This work		0.12 × 0.10	2.1/5.2	−2.1/2.9 dBi	52.5/96	MSB

Peak value, +extracted from the comparative table; GW-guided wavelength, NR: not reported; NA: not available to the authors; AMF: asymmetric microstrip feeding; GPS: ground protruding stub; C-SRR: complementary split ring resonator; H-CRR: hexagonal closed ring resonator; ACGP: asymmetric coplanar ground plane; DGS: defected ground structure.