Figure 3 | Scientific Reports

Figure 3

From: A chip-less and battery-less subharmonic tag for wireless sensing with parametrically enhanced sensitivity and dynamic range

Figure 3

Circuit schematic of the realized SubHT for temperature sensing. The components forming the stabilization network of the built SubHT are shown, including the off-the-shelf thermistor used to activate the unique temperature-sensitive dynamics leveraged during the sensing operation. The components values for the reported prototype are: \(L_1 = 39\) nH, \(L_2 = 22\) nH, \(L_3 = 22\) nH, \(L_{matching} = 1.8\) nH, \(C_1 = 1.5\) pF, \(C_2 = 1.4\) pF, the thermistor’s resistance at ambient temperature is 2.6 \(\Omega \) and the varactor’s rest capacitance is 1.24 pF.

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