Microstrip Triband Bandstop Fitler with Sharp Stop Band Skirts and Independently Controllable Second Stop Band Response

Table 2

Performance comparison of reported TBBSFs.

Reference	Resonant frequency (GHz)	IL (dB)/RL (dB)	Substrate; 𝜖𝑟, ℎ (mm)	Size; (𝜆𝑔×𝜆𝑔)
This work (𝑁=1)	1.93, 3.61, 5.50	−0.50, −0.67, −0.93/−25.8, −28.7, −22.3	2.52, 0.504	0.14 × 0.15
This work (𝑁=2)	1.98, 3.63, 5.50	−0.34, −0.55, −0.68/−54.8,−56.7, −38.6	2.52, 0.504	0.19 × 0.15
Literature [2]	2.37, 3.54, 5.01	−0.35, −0.50, −0.92/−31.2, −30.9, −40.5	2.55, 1.5	0.44 × 0.18
Literature [3]	2.40, 3.50, 5.20	−1.5, −2.54, −1.16/−15, −13, −20	2.2, 1.575	0.21 × 0.11
Literature [4]	2.59, 6.88, 10.67	−0.40, −0.90, −1.10/−29.9, −28.2, −26.6	2.52, 0.504	0.21 × 0.11