Essays about: "elektromagnetiska"
Showing result 21 - 25 of 106 essays containing the word elektromagnetiska.
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21. Design and evaluation of ambient RF energy harvesting platform for sensor-based systems : An experimental study of RF energy harvesting
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : Trådlös energiskörd möjliggör förmågan att skörda energi från elektromagnetisk strålning. Med de senaste framstegen inom trådlös kommunikationsteknik och med tillgången till energieffektiva sensorer, så har radiofrekvensenergiskördning potential till att bli en självförsörjande sensorbaserad plattform. READ MORE
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22. Dual-polarized fully-metallic Vivaldi antenna array in a triangular lattice
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : New mobile communication generations need electromagnetic sensors capable of steering their high-directive beams towards the users. Conventional base stations use square lattice phased arrays to accomplish this task. These arrays are composed of a large number of radiating elements to achieve the required high directivity and scanning capabilities. READ MORE
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23. Whole-body SAR measurements of 5G mmW base stations in a reverberation chamber
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : This study presents a method for measurement of whole-body average specific absorption rate (WBSAR) of a millimeter wave (mmWave) antenna in a reverberation chamber. The method takes advantage of multiple radiated power measurements to estimate the power absorbed in a phantom placed in front of the antenna. READ MORE
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24. Developing data processing program for a new radio magnetotelluric (RMT) instrument
University essay from Uppsala universitet/GeofysikAbstract : The radio magnetotellucic (RMT) method originates from (Tikhonov, 1950) and (Cagniard,1953) who discovered the possibility to estimate resistivity in the Earth’s subsurface using naturally occurring telluric currents. This through measuring the surface impedance of electromagnetic waves. READ MORE
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25. Commissioning and Testing of a Novel Buck-Boost Phase-Modular Three-Phase AC/DC Converter with Low Component Number
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : In this thesis, a 1kW hardware prototype of a three-phase inverting buck-boost converter, termed as 6 Switch Buck-Boost Y-Inverter (6YI) is commissioned and tested. The 6YI is designed to be used as a motor drive for renewable energy applications such as fuel cell, solar etc powered motor drives with wide input voltage capability. READ MORE