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With the advent of web based e-learning systems, a huge amount of educational data is getting generated. These massive data gave rise to Big data in educational sectors. Currently, big data analytics techniques are being used to analyze these educational data and generate different predictions and recommendations for students, teachers and schools. Recommendation systems are already very helpful in...
Electronic authentication (a.k.a e-Authentication) is the process of establishing confidence in a user's identity electronically presented to an information system. In today's world of exploding internet usage and adoption of e-Governance and e-Commerce initiatives in countries across the world, it is imperative that a user is identified with confidence. In the last 5 years or so, there have been...
A compact multiband fractal antenna based on the nested geometry is proposed and designed in this paper. The paper depicts the design optimization of the nested geometries for multiband characteristics. The antenna is fed by discrete port. The design is obtained at the center frequency 2.5GHz. Moreover the effect of truncation in nested geometry is observed. The modification in geometry is introduced...
This paper presents the design issues, modeling, fabrication and characterization of a radome structure, a metamaterial cover over the slotted patch antenna for triband operation with center frequency 2.45 GHz. The dimensions of the slots patterned over the patch antenna are designed to control the lower resonant frequency and the bandwidth. The paper presents the selection of the best optimized dimensions...
The conventional microstrip patch antenna (MSA) have low gain and low directivity. This paper presents coaxial feed rectangular microstrip patch antenna along with left-handed metamaterial (LHM) cover. The Proposed metamaterial cover increases the gain and directivity of the antenna in comparison to conventional microstrip patch antenna alone. The antenna has been designed for 8-10 GHz, hence it can...
A novel approach of analytically and numerically calculating the relationship of directivity with the spacing height of copper grid layer over the patch, termed as radome structure by the present team of authors is presented. Numerous designs and models of radome structure are conceptually solved and evaluated using finite element method (FEM) based High Frequency Structure Simulator (HFSS) software...
The main focus is to obtain triband operation within the frequency range of 1–4GHz. Miniaturization of the overall size of the antenna is to the core of our effort. A novel approach is adopted for evaluating the relationship of directivity with the spacing height of copper grid layer over the patch, termed as radome structure by the present team of authors is presented. Numerous designs and models...
This paper presents the design of a metamaterial inspired symmetrical slotted patch antenna for triband operation with center frequency 2.5 GHz. antenna is designed. The outer dimensions of the patch are designed such that the antenna resonates at the upper resonant frequency. In addition, the dimensions of the slots are designed to control the lower resonant frequency and the bandwidth. The paper...
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