Now showing items 1-4 of 4

  • Analysis of Highly Directive Cavity-Type Configurations Comprising of Low Profile Antennas Covered by Superstrates 

    Farahat, N.; Mittra, R.; Lugo, K.; Ma, L.; Gomez, R. A. (Společnost pro radioelektronické inženýrství, 2008-06)
    In this paper we present a technique for designing antenna/superstrate composites to produce enhanced directivities. As a first step, we study the underlying mechanism that governs the performance of theses antennas by ...
  • Multireflector Antennas - Cascaded Structures with Frequency Selective Surfaces 

    Hertl, I.; Raida, Zbyněk; Novacek, Z. (Společnost pro radioelektronické inženýrství, 2006-12)
    The problem of increasing the gain of directional multiband antennas is solved in the paper. A single-fed multiband (wideband) planar dipole is combined with cascaded (sandwiched) reflectors made of frequency selective ...
  • Neural Networks in Antennas and Microwaves: A Practical Approach 

    Raida, Zbyněk (Společnost pro radioelektronické inženýrství, 2001-12)
    Neural networks are electronic systems which can be trained to remember behavior of a modeled structure in given operational points, and which can be used to approximate behavior of the structure out of the training points. ...
  • Planární anténa s vícepásmovou zemní deskou 

    Syrový, Jiří
    Tato práce je zaměřena na vícepásmové planární antény. Bylo nutno vybrat vhodnou planární anténu a vhodný frekvenčně selektivní povrch (FSS) a prozkoumat jejich vlastnosti. Vlastnosti samostatné obdélníkové flíčkové antény ...