Table 3.

Comparison of proposed filter with previous studies.

Refs.	(GHz)	IL (dB)	RL (dB)	FBW (%)	Size ()	FBW-to-size ratio	Layer, substrate
[9]-I	2.4, 5.75	− 2.4, − 2.0	23, 14	5.9, 5.4	0.230.13	197.3, 180.6	Single, RO4003C
[9]− II	3.2, 5.8	− 0.9, − 2.3	31, 21	14.2, 8	0.240.12	493.1, 277.7	Single, RO4003C
[10]− I	1.5, 4.96	− 0.85, − 0.9	20, 23	14, 7.3	0.0770.155	1173, 611.6	Single, RT/Duroid 5870
[10]− II	1.75, 4.65	− 1.1, − 1.15	14, 21	14.9, 10.4	0.220.18	376.7, 262.6	Single, RT/Duroid 5870
[18]	0.35, 0.95, 1.68	− 1.1, − 0.77 − 0.67 ,	23, 15, 18	10.5, 6.2, 4.3	0.070.103	1456.3, 859.9, 596.4	Single, RO3010
[11]	2.1, 3.98, 6.6	− 0.93, − 0.98, − 1.2	16, 18, 22	17.1, 8.8, 8.4	0.05	342, 176, 168	Single, RT/Duroid 5880
[19]	14.4, 16.9, 22.1	− 2.53, − 1.23, − 1.31	17.5, 21.3, 16.9	1.2, 2.4, 2.9	1.441.44	0.6, 1.2, 1.4	Single, RT/Duroid 5880
[13]	1.83, 2.1, 2.47	− 2.31, − 2.25, − 3.01	30, 20, 15	3.1, 2.9, 2.3	0.220.22	64, 59, 47.5	Multi, RT/Duroid 5880
[2]	2.35, 3.7, 5.65	− 0.35, − 0.6, − 0.85	30, 30, 25	19, 11, 7	0.10.1	1900, 1100, 700	Single, RO4003C
[20]	2.54, 3.46, 4.5, 5.2	− 1.58, − 1.78, − 2.23, − 2.45	>14.2	6.4, 5.7, 3.9, 4.9	0.590.42	26, 23, 15.9, 19.8	Single, RT/Duroid 5880
[21]	1.2, 2.52, 3.51, 4.44	0.034, 0.079, 0.043, 0.085	30, 25, 20, 20	4.8, 3.9, 3.9, 2.2	0.1570.1	305.7, 252.3, 252.3, 140.1	Single, MgO
[22]	11.53, 12.51, 14.7, 15.22	− 1.33, − 1.22, − 1.43, − 1.53		3.1, 3.3, 2.4, 2.1	2.151.27	1.1, 1.2, 0.9, 0.9	Single, RT/Duroid 5880
[12]	1.9, 2.62, 3.63, 4.63	− 1.9, − 1.7, − 2.1, − 2.2	>15, >20, >15, >15	3.2, 2.8, 1.4, 1.7	0.350.35	26, 22.8, 11.4, 13.9	Multi, RT/Duroid 5880
[23]	10.21, 10.77, 11.36, 11.83	− 1.94, − 2.04, − 2.6, − 2.25	>35, >35, >20, >15	2.3, 1.8, 1, 1.5	0.870.87	3.1, 2.4, 1.3, 2	Multi, Tanconic TLY− 5
Proposed	0.97, 2.58, 4.5, 5.6	− 0.38, − 1.1, − 0.84, − 1.1	30, 35, 25, 22	24.8, 7.7, 12, 3.5	0.0630.063	6250, 1915, 3048, 880	Single, RT/Duroid