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In this paper, we present for the first time a novel optimization procedure which allows to maximize the efficiency of RF-DC energy harvester converters, taking into account the contributions of the matching network. Thanks to this procedure, we have designed and realized a CMOS RF-DC converter operating in a very wide range of input power −14÷+1dBm with a peak efficiency of 45% The RF-DC converter...
We present a novel fully differential input/output distributed transformer topology used for the design of millimeter-wave power amplifiers. Input/output distributed transformers are used to feed the input signal to four differential couples and to combine their output power. This topology improves the stability and the efficiency of the power amplifier, minimizing the chip area. The PA prototype...
Interface-trap effects are analyzed in inversion-type, self-aligned In0.53Ga0.47As and In0.53Ga0.47As/ In0.2Ga0.8As MOSFETs with ALD ZrO2 gate dielectric. Interface-trap densities in the order of 1013 cm-2 eV-1 are required to explain the measured subthreshold slopes. For these Dit values, donor-like interface traps are compatible with threshold-voltage values in the 0-0.15 V range as those observed...
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