A Novel Ultra-Miniaturized Angularly Stable Frequency Selective Surface for L-Band Shielding Applications

Table 1

Comparison of the proposed FSS with similar research works.

Ref	Unit cell size	Operating frequency (GHz)	Bandwidth (−10 dB)	Angular stability (°)	Limitations
[7]	0.083λο × 0.083λο	2	1 GHz	60	Higher profile of the FSS unit cell
[10]	0.041λο × 0.041λο	2.47	0.988 GHz	60	Miniaturization is attained for higher operating frequency
[9]	0.034λο × 0.034λο	1.056	0.1 GHz	75	Usage of fractal elements with PTH
[15]	0.034λο × 0.034λο	1.6	0.34 GHz	60	Conductive holes are used
[16]	0.18λο × 0.18λο (with vias)	0.9	0.54 GHz, 0.43 GHz	70	Polarization-sensitive due to asymmetric geometry
		1.9
[17]	0.063λο × 0.063λο	1.9	1.18 GHz	60	Low angular stability
This work	0.028λο × 0.028λο (without vias)	1-2	1 GHz	80	—