A High-Gain Wideband Fabry-Pérot Antenna Employing a Water-Based Frequency Selective Surface for Polarization- and RCS-Reconfigurability

Table 2

Comparison between the designed antenna and existed works.

Ref.	Method	RCS reconfiguration	Pol. mode	10 dB impedance bandwidth (GHz)	Max. realized gain (dBi)	10 dB RCS reduction band (GHz)	Max. RCS reduction value (dB)	Area ()
[2]	Electronic control	No	Dual-linear	2.20-2.72 (21.1%)	15.1 (HP); 14.8 (VP)	N.A.	N.A.
[17]	CAM	No	Single-linear	8.64-12.07 (33.1%)	17.1	About 10.1-11.8 (15.5%)	19.5
[18]	AS	No	Circularly polarized	10.50-10.78 (2.6%)	About 9.5	About 5.8-8.2 (33.8%) +10.7-10.9 (1.9%)	27.6
[26]	CAM	No	Single-linear	9.42-11.35 (18.6%)	About 12.0	9.6-16.9 (55.1%)	39.4
[28]	Liquid absorber	Yes	Single-linear	About 2.98-3.12 (4.6%)	12.1	About 7.3-17.6 (82.7%)	36.0
This work	Water-based FSS+ electronic control	Yes	Dual-linear	4.71-5.53 (16.0%)	16.6 (both HP and VP)	4.5-6.5 (36.4%)	30.8

Note: denotes the wavelength at the center frequency of the effective bandwidth in free space.