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. Author manuscript; available in PMC: 2021 Dec 31.
Published in final edited form as: IEEE Trans Biomed Circuits Syst. 2020 Dec 31;14(6):1241–1252. doi: 10.1109/TBCAS.2020.3037862

Fig. 21.

Fig. 21.

Measurements of rectified voltage at different operating phases; clock and data recovery for ASK modulation; and 1.5-mA, 512-μs bi-phasic current stimulation, at 67-Hz stimulation frequency.