Realization of a Wide Stopband Filter Using the Weakest Electric Field Method and Electromagnetic Hybrid Coupling Method

Table 3

Comparison with similar filters in the literature.

Refs.	(GHz)	Relative bandwidth (%)	Filter order	Insertion loss (dB)	Resistance bandwidth
[14]	20	2.75	4	2.78	20 dB/1.90
[15]	10	1.51	3	2.91	25 dB/2.10
[16]	13	4.55	2	1.5	20 dB/2.39
[17]	15	4	5	2.3	50 dB/1.96
This work	4.78	2.1	4	1.26	25 dB/3.48