Design a Compact and Miniaturized Unit Cell in Substrate Integrated Plasmonic Waveguides

Table 1

Comparison of the proposed filter with the state-of-the-art works.

Ref/shape of slot	Frequency (GHz)	Bandwidth (%)	(dB)	(dB)	Size/
[1] Rectangle-shaped slot	7.5-13	53	>-1	<-15
[12] Dumbbell-shaped slot	8-13.5	51	>-1	<-13
[14] T-shaped slot	5.6-7.3	26	>-1.83	<-10
[16] Yagi-Uda slot	13.5-18.4	30.7	>-2	<-10
[17] Meander slot	46.1-73.7	46	>-1.08	<-10
This work (second design)	5.6-6.3	11.7	>-2	<-10