Parasitic Elements Shorted to Ground to Enhance the Bandwidth of a Dual-Polarized Antenna

Table 2

Comparison with reported wideband dual-polarized antennas.

Ref	Size	BW	Innovation	ISO	Design difficulty
[2]	0.36 0.36 0.2	45% (1.7–2.7 GHz)	Bow-tie dipole	>30	Low
[3]	0.37 0.37 0.16	65.9%% (1.71–3.4 GHz)	shaped feeding	>36	Low
[8]	0.4 0.4 0.087	32.7% (0.69–0.96 GHz)	Nonuniform metasurface	>30	High
[9]	0.4 0.4 0.15	22.7% (0.57–0.72 GHz)	Short pins to improve isolation	>35	Low
[10]	0.39 0.39 0.13	38.7%% (1.69–2.5 GHz)	Stepped impedance slot	>35	Low
[11]	0.34 0.34 0.17	48% (1.68–2.74 GHz)	Balun feeding	>22	High
[12]	0.22 0.22 0.17	52.6% (0.63–1.08 GHz)	Differential feeding	>3.15	High
[13]	0.33 0.33 0.16	46.5% (1.7–2.73 GHz)	Short pins to improve isolation	>38	Middle
[15]	0.38 0.38 0.21	67% (1.39–2.8 GHz)	Load parasitic element	>30	High
[16]	0.52 0.52 0.14	90.9% (0.93–2.48 GHz)	Load folded metallic plates	>20	Low
Proposed	0.36 0.36 0.14	101.4% (0.54 GHz–1.65 GHz)	Load L-shaped metallic shorting wall	>22	Low

: wavelength at the lowest operating frequency.