Table 2.

Comparison of the simulation and measurement results. The resonant frequencies and S11 measurements corresponding to empty channels and the four possible combinations of ethanol and DI water are provided.

Ch 1, Ch 2	Simu. fr [GHz]	Simu. S11 [dB]	Meas. fr [GHz]	Meas. S11 [dB]	Relative Error in fr [%]
Air, Air	8.28	−25	8.26	−10.79	0.24
Ethanol, DI water	7.66	−16.87	7.669	−15.66	0.12
DI water, Ethanol	7.799	−11.48	7.795	−15.54	0.05
Ethanol, Ethanol	7.85	−8.67	7.84	−12.1	0.13
DI water, DI water	7.59	−14.76	7.60	−19	0.13