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The effect of perturbating a frequency-selective surface and its relation to the design of a dual-band surface

The effect of perturbating a frequency-selective surface and its relation to the design of a dual-band surface,10.1109/8.486306,IEEE Transactions on A

The effect of perturbating a frequency-selective surface and its relation to the design of a dual-band surface   (Citations: 37)
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A single-layer dual-band frequency selective surface (FSS) created by the perturbation of a single-band dipole array is studied. A simple algebraic formulation is derived to analyze both element and spacing perturbations. Guidelines are then proposed to allow dual-band FSSs to be designed with no anomalous behavior occurring in the two desired bandstop responses. Examples of unsuccessful and successful dual-band FSSs are calculated
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    • ...Additionally, by forbidding the propagation of electromagnetic (EM) waves in certain frequency bands, these configurations can be used to block the propagation of waves and/or guide them in a desired direction [2-3]...

    Y. Rangaet al. Enhanced gain UWB slot antenna with multilayer Frequency-Selective Sur...

    • ...The perturbation technique has been implemented to convert single layer, first order band to dual-band [13] and multi-resonant element for obtaining multi-band resonance, i.e...
    • ...Periodic structures of complex unit cell have also been used for designing multiband FSS [15, 16], such as a substrate having the same geometries with various dimensions [17, 18] or with fragmented geometries [13, 19]...

    Irfan Ullahet al. Transmission improvement of UMTS and Wi-Fi signals through energy savi...

    • ...Secondly, by forbidding the propagation of EM waves in certain frequency bands, these configurations can be used to block the propagation of surface waves and/or guide them in a desired direction [2-3]...

    Y. Rangaet al. Design and analysis of frequency-selective surfaces for ultrawideband ...

    • ...In addition, perturbed technique both in element periodicity or element size is an alternate approach for realizing a dual stop band with a single layer configuration [11]...

    Mahmoud Niroo-Jaziet al. Reconfigurable dual-band frequency selective surfaces using a new hybr...

    • ...In [12] it was recognized that there are limitations associated withthefar-fieldperformanceofmultibandarrays.Inparticular, it was argued that for plane wave incidence, dual-band arrays at a certain frequency exhibit the so-called “modal interaction null”...
    • ...The reflection coefficient of a normally incident plane wave by the entire array in terms of the self and mutual impedances of the sub-arrays is given by [12]...
    • ...Nevertheless, in accordance with the discussion aboveand [12], another full reflection point emerges at 17.2 GHz followed by a reflection null at 17.34 GHz...
    • ...The level of perturbation is known to affect the frequency separation between the two full reflection points as well as the modal interaction null [12]...

    Carolina Mateo-Seguraet al. Resonant Effects and Near-Field Enhancement in Perturbed Arrays of Met...

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