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Singh A.,CT Institute of Engineering Management and Technology | Singh S.,Sant Longowal Institute of Engineering And Technology
AEU - International Journal of Electronics and Communications | Year: 2015

This paper deals with modified Sierpinski fractal wideband antenna design. As research in the field of antenna design has already established, therefore it is exceptional that a novel approach is used over conventional antenna design methods to optimize the existing Sierpinski fractal antenna. The implemented antenna exhibits the broadband behaviour in the frequency bands of 12.2-13.4GHz and 21-30GHz in which it follows S11< -10 dB all through the frequency bands. The measured peak gains within the specified frequency bands vary from 8 to 22 dB. This high gain is achieved by employing the modifications to the initial Sierpinski geometry. The experimental and measured results of the modified coaxial probe fed Sierpinski fractal antenna are also presented. Experimental results are also validated. © 2015 Elsevier GmbH. All rights reserved. Source

Parkash S.,CT Institute of Technology and Research | Sharma A.,CT Institute of Technology and Research | Singh H.,CT Institute of Technology and Research | Singh H.P.,CT Institute of Engineering Management and Technology
Advances in Optical Technologies | Year: 2016

We successfully demonstrate 40 GB/s 8 channels' Dense Wavelength Division Multiplexing (DWDM) over free space optical (FSO) communication system. Each channel is transmitting 5 GB/s data rate in downstream separated by 0.8 nm (100 GHz) channel spacing with 1.8 GHz filter bandwidth. DWDM over FSO communication system is very effective in providing high data rate transmission with very low bit error rate (BER). The maximum reach of designed system is 4000 m without any compensation scheme. The simulation work reports minimum BER for Return-to-Zero (RZ) modulation format at different channels 1, 4, and 8 are found to be 2.32e-17, 1.70e-16, and 9.51e-15 at 4000 m distance, respectively. Sharp increase in BER occurs if data rate and distance increase up to 10 GB/s and 5000 m. Copyright © 2016 Sooraj Parkash et al. Source

Singh A.,CT Institute of Engineering Management and Technology | Singh S.,Sant Longowal Institute of Engineering And Technology
International Journal of Antennas and Propagation | Year: 2014

This paper presents a linear polarized aperture coupled inverted U-slot patch antenna with small steps at the edges. The proposed design exhibits wideband behavior, acceptable return loss, VSWR, gain, small size, and less complexity. The theoretical analysis is based on the finite element method (FEM). This design has wide bandwidth, good return loss, VSWR, and radiation characteristics by implanting the inverted U-shaped stepped slots on a single aperture coupled patch. The proposed antenna design shows the measured return loss within acceptable range throughout the band (11.08 GHz-13.25 GHz) and maximum return loss is achieved with proper impedance matching. In this paper, the design considerations are presented and results are validated by the calculated and measured parameters. Copyright © 2014 A. Singh and S. Singh. Source

Kumar N.,CT Institute of Engineering Management and Technology | Sachdeva A.,National Institute of Technology Jalandhar | Singh L.P.,National Institute of Technology Jalandhar | Tripathi H.,Global Institute of Management and Emerging Technologies
International Journal of Machining and Machinability of Materials | Year: 2016

Surface finish and dimensional accuracy are ever in demand because of strong influence of these characteristics on major functional properties like friction, fatigue strength, wear resistance, load carrying capacity, and corrosion resistance of any materials. In the present work the effect of burnishing process parameters like burnishing condition, burnishing speed, feed, depth of penetration, number of passes is investigated on the surface roughness and hardness of C40E steel. Taguchi design of experiment is used for present experimentation. Taguchi's L18 mixed orthogonal array is used for optimisation of input parameters and analysis of variance (ANOVA) is employed for concluding vital and fruitful results. Investigation reveals that minimum surface roughness value of .129 μm at wet burnishing condition .557 rpm speed, .06 mm/rev feed, 1.5 mm depth of penetration and double pass of tool and optimised surface hardness 94 HRB at dry burnishing condition, 371 rpm speed, 0.11 mm/rev feed, 1.5 mm depth of penetration and third pass of tool is obtained. ©2016 Inderscience Enterprises Ltd. Source

Sharma N.,CT Institute of Engineering Management and Technology | Mittal H.M.,National Institute of Technology Jalandhar
International Journal of Applied Engineering Research | Year: 2014

A four parameter formula has been applied to superdeformed (SD) bands of A=190 mass region to obtain the band moment of inertia. The measured Qt values and hence the axes ratios have been used to calculate the rigid body J0 values and compare with the fitted values of J0. On an average, both the J0 values follow the expected A5/3 trend in all the cases. However, the J0 values obtained from fitting of the SD bands in A=190 mass region exhibit considerable spread in many cases which points towards the presence of structural effects in these SD bands. © Research India Publications. Source

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