Table 5.

Qualitative analysis of our proposed TE₂₀-mode SIW resonator with other RF chemical sensors, which have been proposed for dual/multichannel-detection.

Ref.	Substrate	Technology	Configuration	Noncontact	Independent Tuning	Detection
This work	RT/Duroid 5880	TE20 mode SIW	Unit cell	Yes	No	Dual
[22]	RT/Duroid 6010.2 LM	MM	Array	No	Yes	Multiple
[23]	RO3003	MM	Array	Yes	Yes	Dual
[24]	RO3010	MM	Array	Yes	No	Partially dual

Note: The configurations in [22,23,24] were four SRRs, three OSRRs, and two SRRs, respectively.