Wolfgang A. Vitale

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Graphene quantum capacitors (GQC) are demonstrated to be enablers of radio-frequency (RF) functions through voltage-tuning of their capacitance. We show that GQC complements MEMS and MOSFETs in terms of performance for high frequency analog applications and tunability. We propose a CMOS compatible fabrication process and report the first experimental(More)
The modulated scattering technique is based on the use of reconfigurable electromagnetic scatterers, structures able to scatter and modulate an impinging electromagnetic field in function of a control signal. The modulated scattering technique is used in a wide range of frequencies up to millimeter waves for various applications, such as field mapping of(More)
This paper presents the optimization design of 3D integrated inductors exploiting through silicon vias (TSV) technology to improve the quality (Q) factor in the 2-20 GHz range. The embedded inductor allows the heterogeneous integration with CMOS and MEMS components in a size-compact and low-cost manufacturing process. Results limited to our manufacturing(More)
Steep-slope transistors allow to scale down the supply voltage and the energy per computed bit of information as compared to conventional field-effect transistors (FETs), due to their sub-60 mV/decade subthreshold swing at room temperature. Currently pursued approaches to achieve such a subthermionic subthreshold swing consist in alternative carrier(More)
We describe the current status of our research on reflectarray antennas operating at terahertz frequencies. We present preliminary measurements of a fixed beam reflectarray operating at 1 THz fabricated on silicon and characterized with a THz time domain system. Secondly, we study theoretically the applicability of novel reconfigurable materials, namely(More)
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