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A W-band power amplifier with Class-E tuning in a 0.13 SiGe BiCMOS technology is presented. Voltage swing beyond is enabled by the cascode topology, low upper base resistance, and minimally overlapping current-voltage waveforms. At 93 GHz with 4.0 V bias, the peak power-added efficiency and saturated output power are measured to be 40.4% and 17.7 dBm, respectively. With the...
Titanium dioxide, known as a high-k biocompatible dielectric transducer material, is processed by means of ALD and applied to a 3D structure with dimensions typical for multi-site multi-channel in-vivo neural interfaces. High uniformity, high areal capacitance, and in particular low leakage current densities are achieved within a sufficiently wide operation voltage window. The results demonstrate...
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