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A novel metamaterial-FSS (frequency selective surface) is designed in this paper based on the theory of tightly coupled resonators for radome applications. The proposed metamaterial unit cell consists of a Swastika-shaped conductor on each side of the substrate which is shorted at the edges by introducing shorting strips. The structure exhibits negative permittivity and permeability behavior at distinct...
The advancement in invisibility cloaking application has fascinated many researchers towards the design of different metamaterial unit cells. In this paper, different planar and conformal metamaterial structures have been designed over a wide band of frequency, varying from microwave to terahertz range. The dielectric properties of the designed structures have been extracted using s-parameter retrieval...
This paper presents a novel Swastika-shaped metamaterial structure which exhibits metamaterial behavior (μ- and ε-negative) in distinct frequency ranges. The EM analysis of metamaterial (MTM) structure is carried out using transmission line transfer matrix method and validated with full-wave method based software package. The proposed structure is observed to exhibit bandpass frequency selective characteristics...
A monolithic radome wall embedded with novel hybrid-element FSS shows superior electromagnetic performance when compared to conventional monolithic radome. The proposed FSS structure presented in this paper consists of square loop configured with Jerusalem cross. The EM performance analysis of the proposed FSS structure is carried out based on the equivalent circuit model approach. The FSS structure...
The interference suppression capability of phased array depends on efficacy of adaptive algorithm employed for pattern synthesis. In this paper, the active cancellation of probing sources in dipole array mounted on planar/non-planar conducting surfaces is demonstrated. The optimum antenna weights are obtained using modified improved LMS algorithm. The platform effect and mutual coupling are taken...
The next generation communication system demands for high data rate transfer leading towards exploring a higher level of frequency spectrum. In view of this demand, design of substrate integrated waveguide filters has been presented here in conjunction with metamaterial technology to increase the performance. A metamaterial based substrate integrated waveguide filter operating in the K band (18 –...
The EM performance analysis of double-layer MNG-ENG metamaterial FSS is presented in this paper using TLTM method. The transmittance and reflectance characteristics are studied for TE polarization at normal incidence. It is found that the proposed metamaterial structure exhibits superior bandpass characteristics over a wide frequency range 1.9–6.6 GHz and band rejection at 9.9 GHz. Further, the tuning...
Electromagnetic analysis of cascaded thick FSS for TM polarization has been carried out in this paper using MM-GSM technique. For the determination of generalized scattering matrix (GSM) of the FSS structure, only the co-polarized TM-TM field interaction is considered because the power coupled through the cross-polarized TM-TE interaction is negligibly small. It is observed that the cascaded FSS show...
This paper presents EM performance analysis of the multilayered metamaterial FSS using TLTM method. It is shown that a multilayered metamaterial structure reveals the FSS properties. For efficacy of the method, the computed results are validated for metamaterial FSS structure such as tri-layer radome with the reported results in the open literature. Excellent matching is found between the computed...
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