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IEE Colloquium on Advances in Electromagnetic Screens, Radomes and Materials (Digest No: 1996/270)

24 Oct 1996

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Displaying Results 1 - 8 of 8
  • Progress towards reconfigurable electromagnetic structures

    Publication Year: 1996, Page(s):4/1 - 4/6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (308 KB)

    This paper reviews progress in the design, realisation and application of large-area, reconfigurable electromagnetic structures (RES) based on polymer composite materials having dynamically controllable resistance and/or capacitance. So far, much of the work of Chambers et. al. (see Proc. 17th AMTA Symposium, Williamsburg, VA, USA, p.318-22) has been concerned with radar absorbing materials, but s... View full abstract»

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  • Application of wire grid matching to the indoor antenna problem

    Publication Year: 1996, Page(s):3/1 - 3/4
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (200 KB)

    With the continuing rapid growth in communications networks for use in a wide range of commercial and consumer applications, the siting of antennas on the external surfaces of buildings is becoming an ever increasing problem. Apart from aesthetic concerns, permission to place antennas on suitable surfaces is often difficult to obtain, particularly for users of rented office space, and the cost of ... View full abstract»

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  • Radome materials, fabrication, design with applications and theory, and frequency selective surface techniques

    Publication Year: 1996, Page(s):2/1 - 2/7
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (328 KB)

    Radomes can be thin wall or nλ/2 thick or A- or B- or C-sandwich or can be multilayered. The properties of radome materials include: fabrication which may involve curing; electrical properties like the dielectric constant and loss tangent; mechanical properties like Young's modulus; thermal properties like thermal shock and temperature; porosity and rain erosion resistance in that order. Th... View full abstract»

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  • Microwave chiral materials

    Publication Year: 1996, Page(s):1/1 - 1/6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (348 KB)

    A chiral material is one that has a distinct left- or right-handedness about its structure, arising from handed molecules or from handed scattering particles such as helices. The electromagnetic consequence of this is that left-handed circularly polarised waves travel with a different velocity and absorption from right-handed waves. Chirality is thus a generalisation of the more familiar phenomeno... View full abstract»

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  • Advances In Electro-magnetic Screens, Radomes And Materials

    Publication Year: 1996, Page(s): 0_5
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (44 KB)

    First Page of the Article
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  • Application of waveguide simulators to FSS and wideband radome design

    Publication Year: 1996, Page(s):7/1 - 7/6
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (460 KB)

    Frequency selective surfaces (FSS) have been applied in a number of commercial and defence scenarios, ranging from submillimetre wave diplexers and subreflectors in dual band reflector systems, to advanced low observable radomes and filters for the suppression of electromagnetic interference in communications systems. Periodic structures have also been applied in the design of flat plate polariser... View full abstract»

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  • Reconfigurable FSS using multilayer conducting and slotted array structures

    Publication Year: 1996, Page(s):6/1 - 6/6
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (308 KB)

    Exploiting the interlayer coupling and relative position of multilayer frequency selective surface (FSS) structures opens up a number of possibilities for reconfigurable and/or switchable frequency characteristics. For an effective result a deeper understanding of the coupling mechanisms (propagating and evanescent) coupling is needed. In order to achieve the correct coupling, the element geometry... View full abstract»

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  • Some aspects of curved frequency selective surfaces

    Publication Year: 1996, Page(s):5/1 - 5/6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (424 KB)

    Frequency selective surfaces are usually formed from arrays of elements printed on dielectric substrates or sandwiched between dielectric layers. They can be modelled using Floquet modal techniques when they are periodic and plane and infinite or curved into a complete cylinder. Arbitrarily curved finite surfaces present greater problems because it becomes necessary to perform the computations for... View full abstract»

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