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Jhānsi, India

Singh V.K.,Sr Group Of Institutions | Ali Z.,Bundelkhand University | Singh A.K.,Indian Institute of Information Technology Allahabad | Ayub S.,Bundelkhand Institute Of Engg And Technology
Central European Journal of Engineering

In this paper stacked configuration of microstrip antenna is used to produce dual wide band which is suitable for various wireless applications. Using triangular slot and stacking of foam substrate of dielectric constant 1, two bands of bandwidth 18.70% and 12.10% is obtained. The antenna is fed by coaxial probe feeding technique. The proposed patch antenna is designed on the foam substrate and simulated on the Zeland IE3D software. © Versita sp. z o.o. Source

Srivastava R.,Bundelkhand Institute of Engg Technology | Singh V.K.,Sr Group Of Institutions | Ayub S.,Bundelkhand Institute of Engg Technology
Advances in Intelligent Systems and Computing

This paper presents a direct coupled C slot loaded microstrip antenna which can yield wider bandwidth for WLAN/WiMax applications. The different antenna geometries are simulated through IE3D Zeland simulation software for the comparative analysis of bandwidth. The recent development technology of wireless internet access applied to the WLAN (Wireless Local Area Network) frequency bands in the range 2.40-2.50 GHz has forced demand for dual-band antennas, which can be implemented in stationary and mobile devices. The proposed antenna has dual frequency band having fractional bandwidth 3.38% (1.392-1.44 GHz) and 69.5% (1.733-3.58 GHz) which is suitable WLAN/WiMax applications. The gain has been improved up to 5.11dBi, directivity 5.39dBi and efficiency 97.216%. The proposed directly coupled microstrip antenna fed by 50 Ω microstrip feed line. © Springer International Publishing Switzerland 2015. Source

Singh V.K.,Sr Group Of Institutions | Ali Z.,Bundelkhand University | Ayub S.,Bundelkhand Institute of Engineering and Technology | Singh A.K.,Bundelkhand University | Singh A.K.,Indian Institute of Information Technology Allahabad
Central European Journal of Engineering

A novel compact broadband microstrip patch antenna is presented for various wireless applications. The proposed antenna has been fabricated and the impedance bandwidth and radiation pattern are measured. The simulated and measured antenna characteristics along with radiation pattern and gain are presented. It is stated that the proposed designed antenna can completely cover the required band widths of Digital communication system (DCS 1.71-1.88 GHz), Personal communication system (PCS 1.85-1.88 GHz) and IEEE 802.11b/g (2.4-2.485 GHz) with satisfactory radiation characteristics. The Experimental result shows that the proposed antenna presents a bandwidth 60.25% covering the range of 1.431-2.665 GHz with the maximum radiation efficiency 90%. © Versita sp. z o.o. Source

Kumar S.,Sr Group Of Institutions | Bhattacharya S.,Indian School of Mines | Dhiman V.,Indian School of Mines | Mohapatra S.,Indian School of Mines
International Journal of Speech Technology

Performance evaluation, in a complete speech analysis-synthesis system, has been carried out for a wavelet-based pitch detection scheme that has been reported earlier. Speech quality, time for computation and memory consumption (for real-time implementation) are the parameters that have been considered while comparing this system with analysis-synthesis systems that use pitch detection based on autocorrelation and cepstral analysis. Results for different speech signals show that autocorrelation-based pitch detection scheme is the best in terms of speech quality and memory consumption while wavelet-based pitch detection stands in between the other two methods. © 2013 Springer Science+Business Media New York. Source

Gupta N.,Sr Group Of Institutions | Singh V.K.,Sr Group Of Institutions | Ali Z.,Bundelkhand University
Procedia Computer Science

The proposed article describes the new stacked design of the textile antenna. In this article a tripple wideband high directivity stacked textile antenna is proposed. The proposed antenna shows wideband performance with wide bandwidth of 18.38% covering the frequency range of 3.667 GHz to 4.409 GHz, 7.76% covering the frequency range of 7.2132 GHz to 7.795 GHz and 7.67% in the frequency range of 10.03 GHz to 10.83 GHz respectively. The textile material is used because it is wearable, washable, economical, and flexible & needs less care. Measured and Simulated return loss plot is presented to validate the importance of the proposed design. © 2016 The Authors. Published by Elsevier B.V. Source

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