Design of Broadband Band-Pass Filter with Cross-Coupled Line Structure

Table 1

Comparisons with some previous BPFs.

Ref	Passband bandwidth (GHz)	−10 dB lower stopband bandwidth (GHz)	−10 dB upper stopband bandwidth (GHz)	RL (dB)	IL (dB)	Size ()	Transition band (GHz)	Circuit complexity
[1]	7.3	2.5	5	20	0.35	0.5 ∗ 0.79	0.5/0.7	Simple
[6]	0.19	0.4	0.4	16	1.28	0.18 ∗ 0.175	0.08/0.08	Simple
[8]	8	2.3	2.8	10	0.52	0.1 ∗ 0.1	0.15/0.15	Complex
[9]	4.15	4	8.5	15	1.45	0.5 ∗ 0.04	0.45/0.5	Complex
This work	1.8	2.2	2.0	15	0.7	0.12 ∗ 0.14	0.3/0.3	Simple

Note: RL (return loss in passband); IL (insertion loss in passband); transition band is in the frequency range from −3 dB to −10 dB.