Wideband and High-Efficiency SIW Cavity-Backed Magneto-Electric Dipole Antenna Array

Table 5

Comparison to other antenna elements/arrays.

Ref.	Antenna type	Elements	Total size (λ0)	Impedance bandwidth (%)	3-dB gain bandwidth (%)	Max gain (dBi)	Max aperture efficiency (%)
[19]	Slot array fed by hollow waveguide	16 × 16	15.4 × 15.6 × 0.6	8.3	8.3	33	83.8
[20]	Slot array fed by metallic ridge gap waveguide	16 × 16	16.2 × 16.2 × 2	16	17.9	32.5	81.4
[21]	ME dipole array fed by printed ridge gap waveguide	4 × 4	3.5 × 3.4 × 0.28	16.5	16.5	21.2	90
[26]	SIW-fed ME dipole array	8 × 8	8.47 × 10.96 × 0.847	16.3	16.3	26.7	86.1
[27]	SIW-fed cavity-backed patch	16 × 16	15.6 × 17.4 × 0.85	15.3	16.1	30.1	80.4
[28]	SIW-fed slot array	4 × 4	8.82 × 5.09 × 0.8	20.5	20.5	19.4	79.3
[29]	SIW-fed ME dipole array	8 × 8	7.52 × 8.36 × 0.48	18.2	18.2	26.1	N/A
[30]	SIW-fed slot array	16 × 16	12 × 12.6 × 0.13	19.2	15	29.1	42.8
[31]	SIW cavity-backed slot array	8 × 8	10.56 × 10.56 × 0.51	17.1	13.1	22.3	46
[32]	SIW cavity-backed slot array	4 × 4	N/A	26.5	26.5	20	N/A
[33]	SIW-fed ME dipole array	4 × 4	4.3 × 4.3 × 0.51	26.7	26.7	21.5	87.7
This work	SIW-fed ME dipole array	4 × 4	3.58 × 3.96 × 0.3	30	30	20.9	94