Design of a Substrate-Integrated Fabry-Pérot Cavity Antenna for K-Band Applications

Table 2

Comparison of the proposed antenna with low-profile high-gain Fabry-Pérot cavity antennas. The two-layer design means that two substrates of feeding and FSS structures are closely appressed to each other.

Antenna structure	Design concept	Substrate ()	(GHz)	Overall volume (mm^3)	−10 dB || BW (%)	Max. gain (dBi)	3 dB gain BW (%)
Proposed antenna	Single layer	10.2	21.6; -band	56 × 56 × 3.175	>8%	13.1	1.3
Reference [16]	Two layers	3.38; 3.38	9.95; -band	80.5 × 80.5 × 3.35	Not specified	12.5	2.2
Reference [17]	Two layers	2.65; 9.8	11.76; -band	60 × 60 × 3.5	1.7	14.7	Not specified
Reference [14]; “MG” case	Single layer	4	44.6; -band	36 × 36 × 1.5875	~2%	14	0.45