Author: Carlos A. F. Sartori

OS1-2 Effects on the antenna’s radiation pattern due to metamaterial-based sub-wavelength insulation
15 May
Posted in 4 comments

OS1-2 Effects on the antenna’s radiation pattern due to metamaterial-based sub-wavelength insulation

A metamaterial-based insulator is proposed for highly compact MIMO-systems. In previous work, the proposed insulator has been demonstrated to reduce efficiently the coupling at PEC boundaries between two very close antennas on a common ground plane. The present study concentrates on the effects of this insulator on the antenna radiation pattern. The chosen operating frequency […]

OS4-4 Low-Voltage AC Surge Protective Device Assessment regarding Nuclear Plants
14 May
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OS4-4 Low-Voltage AC Surge Protective Device Assessment regarding Nuclear Plants

This paper presents a methodology for low-voltage AC surge protective device (SPD) coordination. As motivation, the required nuclear plant reliability and safety criteria, in which the surge protection coordination can assume an important role, are emphasized. Due the characteristics of the protection system, and the surge phenomena, an iterative methodology is applied. The SPD selection […]

OS4-1 Experimental Evaluation of Voltage Resonance on Industrial Cables
10 May
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OS4-1 Experimental Evaluation of Voltage Resonance on Industrial Cables

This paper considers the resonance phenomena observed on cables connected to power converters, evaluating theoretically and experimentally the voltage amplification due to resonance on these cables. The experimental study was effectuated on cables typically used on industrial applications. Factors restricting resonance-due amplifications are considered, as well as the conditions under which resonance issues may rise […]