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. Author manuscript; available in PMC: 2019 Dec 1.
Published in final edited form as: IEEE Trans Biomed Circuits Syst. 2018 Oct 15;12(6):1256–1266. doi: 10.1109/TBCAS.2018.2876069

Fig. 5.

Fig. 5.

Encoder circuit of MOTE including relaxation oscillation with timing diagram. The voltage output from the amplifier (VIN) determines the current outflow from the capacitor, hence dictating the slope of VENC decay relative to that of the oscillator VOSC. The slope is then used to create irregular duty cycle VOUT to generate current pulses whose spacing tracks the VIN.