Bandwidth Extension of a Printed Square Monopole Antenna Loaded with Periodic Parallel-Plate Lines

Table 2

The performance of proposed antenna compared with other published antenna.

Reference		Relative bandwidth	Antenna size	Relative dielectric constant
[12]	3.75–7 GHz	60.5%	52 × 55 × 1.52 mm^3	2.2
[14]	5.1–6.05 GHz	17%	24 × 36 × 1.6 mm^3	4.4
[20]	1.85–3.40 GHz	59%	150 × 18 × 1 mm^3	2.65
Proposed antenna	2.16–4.06 GHz	61.1%	62.5 × 12 × 1 mm^3	3.5