Abstract A vast majority of research has been performed in the field hesitant fuzzy sets (HFSs), involving introduction some properties, operations, relations and modifications such or considering application HFSs MCDM (multicriteria decision making). On other hand, no fully equations. Therefore, this paper, equations dual are introduced. First, a method is proposed to solve one-element Then, e...

IW circuits are considered quasi3D (2,5D) metal-dielectric circuits. They have a high level of integration circuits, the metal and dielectric losses moderated and the precision of manufacturing for microwave applications [1]-[3]. The architecture of these structures consists in adding to the planar circuits a network of metallic via-hole integrated in the dielectric layer. The via-holes replace...

The Heterogeneous Flow System Specification (HFSS) is a modeling formalism that represents hybrid simulation components in a modular and hierarchical form. The HFSS formalism exploits the hierarchical aspects of modeling by permitting the representation of dynamic structure components. An important type of structural change involves the migration of a component between two models. This type of ...

Multi band H shaped MSA is presented here. This antenna is suitable for DCS, WiMAX and WLAN application. FR-4 epoxy substrate is used on which H shaped slot is cut by etching technique. This structure radiates for DCS (1.71-1.88) GHz, low band WiMAX (2.50-2.69) GHz and WLAN (5.15-5.35) GHz. The return loss obtained at 1.8268 GHz, 2.6352 GHz and 5.2840 GHz are -38.62 dB, -50.62 dB and -19.48 dB ...

The widely used feature representation scheme for magnetic resonance (MR) image classification based on low-frequency subband (LFS) coefficients of wavelet transform (WT) is ineffective in presence of common MR imaging (MRI) artifacts (small rotation, low dynamic range etc.). The directional information present in the high-frequency subbands (HFSs) can be used to improve the performance. Moreov...

We designed a waveguide SIS mixer based on NbN for the 900-GHz band. The waveguide mixer block with an MgO substrate was designed using Hewlett Packard's High Frequency Structure Simulator (HFSS) and uses a waveguide-to-microstip transition. Simulation by HFSS showed that a source impedance of around 60 12 can be achieved from 786 to 988 GHz by using an MgO substrate about 30 gra thick. The tun...

this paper presents a miniaturized open-ended rectangular waveguide antenna radiating below the cut-off frequency of the waveguide with a large bandwidth. Waveguide miniaturization is achieved by periodically loading the antenna with electromagnetic metamaterials consisting of infinity shaped resonators. The metamaterial cell is designed to have a high effective dielectric permittivity in the f...