Design of a Broadband Radome-Enclosed Dual-Polarization Antenna Array Covering Sub-6 GHz Band with Differential Feeding

Table 2

Comparison of the proposed antenna array with previous works.

Refs	Operating bands (GHz)	Height (mm)	Size (mm^2/λ0^2)	Isolation (dB)	Element gain (dB)	Efficiency	Cross-polarization (dB)	Radome integrated
[4]	3.3–3.6	18.8	26 × 26	25	7.3	>89.3%	−17/−24.5	No
	8.7%	0.216λ0	0.3 × 0.3
[5]	3.28–5.31	10.5	96 × 96	37	6.3	>65.0%	−20	No
	47.3%	0.15λ0	1.37 × 1.37
[16]	5.4–5.6	5.3	19.5 × 16.8	25	9.5	—	−19.5	Yes
	3.6%	0.097λ0	0.36 × 0.31
[17]	3.3–3.66	5.813	80 × 80	35	8.2	—	−20.8	No
	10.3%	0.067λ0	0.93 × 0.93
[18]	3.3–3.6	6.8	25.2 × 25.2	26	8.5	—	−22	Yes
	8.7%	0.078λ0	0.29 × 0.29
[19]	4.1–4.35	—	50 × 50	28	6.5	—	−25	No
	5.8–6.15	—	1 × 1	30			−15
	5.9%/5.9%	—
[20]	3.14–3.8	11.8	82 × 82	43	8.1	>78%	−30	No
	16.6%	0.136λ0	0.95 × 0.95
[25]	3.28–3.71	11.3	65 × 65	37	8.34	—	−18.2	No
	4.8–5.18	0.13λ0	0.75 × 0.75
	12.3%/7.6%
[26]	3.12–3.9	11.3	65 × 65	35.2	8.1	—	−21	No
	22.2%	0.15λ0	0.7 × 0.7
[5]	3.26–3.73	9.5	96 × 96	25	9.1	>65%	−20	No
	4.68–5.05	0.13λ0	1.34 × 1.34
	13.5%/7.6%
This work	3.3–6.0	6.3	45 × 80	33	6.4	>65%	−30	Yes
	58.1%	0.097λ0	0.7 × 1.2