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. 2021 Aug 14;21(16):5485. doi: 10.3390/s21165485

Figure 1.

Figure 1

Illustrative timeline of previous works and the progress for the MAS device, BSF = Bandstop filter, SRR = Split-ring resonator, SIW = Substrate Integrated Waveguides sensor, SIW DR = SIW with dielectric resonator sensor.