Sökning: "dielectric"
Visar resultat 21 - 25 av 449 avhandlingar innehållade ordet dielectric.
21. Some Aspects of Advanced Technologies and Signal Integrity Issues in High Frequency PCBs, with Emphasis on Planar Transmission Lines and RF/Microwave Filters
Sammanfattning : The main focus of this thesis is placed on high frequency PCB signal Integrity Is-sues and RF/Microwave filters using EBG structures. From the signal Integrity aspect, two topics were mainly discussed. LÄS MER
22. Electrical Properties of Carbon Black Polymer Composites: Filler Particle Rearrangement
Sammanfattning : The practical application of semi-conducting carbon black polymer composites often involves temperature variations resulting in changes in their electrical properties. Study of cross-linked ethylene butylacrylate copolymer (EBA) filled with acetylene black has shown that these changes are due to carbon black network re-arrangement. LÄS MER
23. Active insulation : possibilities of utilizing free charges in air
Sammanfattning : .... LÄS MER
24. On the Dielectric Losses of Polyethylene at Medium and High Frequencies
Sammanfattning : AbstractAs mobile communication moves from 3G to 4G, the bandwidth used will be extended from 2 GHz to 5 GHz. The propagation loss is related to the 2.6:th power of frequency, thus a large increase in power consumption may be expected. LÄS MER
25. Dielectric relaxation spectroscopy of chiral smectic liquid crystals
Sammanfattning : .... LÄS MER