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Diffraction efficiency of surface relief gratings
Hradil, Milan
Diffraction efficiency of surface-relief gratings with various profiles is discussed. The general relation for the diffraction efficiency is derived from the Frauenhoffer approximation. The general relation is applied for several profiles. It is pointed out that shallow profiles can provide high diffraction efficiencies.
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Software radio in the mobile radio-communication /telephony/
Ďurovič, Svetozár
In the paper various applications of software radio in wideband mobile telephony systems are presented. The architecture of the basic parts of the mobile systems 3G is described and special attention to the technical problems is given. The report contains many computer programs to illustrate the mathematical procedures.
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