Table 2.

Comparison of the proposed antennas with other antennas in terms of gain, size, and feed system.

Ref.	Frequency Range (GHz)	Feed System	Size (mm2)	Gain (dBi)
[52]	8–12	SIW 1 × 8 power divider	100 × 57	12
[56]	2.5–15	T-junction power divider	120 × 80	14.5
[57]	26.1–28.3	SIW Right-Angled Power Dividers	--	8.5
[58]	7–32	microstrip feeding	140 × 66	12
[59]	25–31	4 × 4 butler matrix	29.52 × 20.52	10.2
Proposed antenna (podal)	2.4–15.4	T-junction power divider with slot and Chebyshev microstrip line	70.69 × 72	11.3
Proposed antenna (antipodal)	2.8–16	T-junction power divider with slot microstrip line	89.88 × 74	10.4