PMC

(a) The 10–20 international system of EEG electrode placement [], under CC by 4.0; (b) synthetic scheme 2. The initial peak-to-peak voltage signal is the synthetic peak-to-peak voltage injected from the digital oscilloscope to the head phantom. Thus, the actual peak-to-peak voltage signals are the peak-to-peak voltage collected from the head phantom and the peak-to-peak voltage noise is the difference between the injected and collected back peak-to-peak voltage signal.

The relationship curves of the peak-to-peak voltage and the excitation frequency of the unimorph PCD from experimental results (blue line) and simulation results (red line). (a) peak-to-peak voltage of PCD with D_p = 65 mm; (b) peak-to-peak voltage of PCD with D_p = 70 mm; (c) peak-to-peak voltage of PCD with D_p = 75 mm.

Measured waveforms partaining to (a) output voltage versus the peak-to-peak input voltage, (b) VCE versus the peak-to-peak input voltage, (c) output voltage versus the input power () and (d) VCE versus the input power. ( = 3.9 M, C = 470 nF, f = 100 kHz).

(a) Schematic diagram and photo of measurement setup; (b) voltage gain versus input peak-to-peak voltage amplitudes of class-C amplifier and class-C linearized amplifier; (c) voltage gain deviations vs. input peak-to-peak voltage amplitudes of class-C amplifier and class-C linearized amplifier; (d) DC power consumption versus input peak-to-peak voltage amplitudes of class-C amplifier and class-C linearized amplifier.