Design of a SIW Bandpass Filter Using Defected Ground Structure with CSRRs

Table 2

Performance comparisons with other recent published SIW filters.

Reference	Center frequencies of the passbands (GHz)	3 dB fractional bandwidth (%)	Insertion loss (dB)	Size
[11]	5.85/6.15	1.3/1.3	2.2/2
[12]	5.3/8.7	6.8/3.2	1.8/1.94
[13]	4.8/5.4	3.8/3.9	1.2/1.3
[14]	9.4/9.98	3.1/3.7	2.24/2.01
This work	5.4/10.1	17.2/55.2	1.1/1.4

is the guided wavelength at the center frequency of the first passband.