Dr Kishan Singh
@gndecb.ac.in
HOD & Professor
Guru Nanak Dev Engineering College Bidar
HOD and Professor ECE Department Guru Nanak Dev Engineering College Bidar
EDUCATION
B. Sc, M. Sc, M E, Ph D
RESEARCH INTERESTS
Microwave Antennas
Scopus Publications
Scholar Citations
Scholar h-index
Scopus Publications
Nagnath Biradar and Kishan Singh
Institute of Advanced Engineering and Science
Modern technology has made it easier to perform many tasks, including data, voice, video, and short-range device-to-device communication. These characteristics operate at different frequencies. In order to realize compact electronic devices and give users ease of movement, the antenna should operate on various frequency bands. This paper discusses the design of quad band antenna operating from 2.1 to 2.6 GHz, 3.9 to 4.9 GHz, 5.1 to 6.3 GHz, and 7.4 to 11.2 GHz. The realization of multiband is achieved using slots as parasitic elements on the radiator. These slots alter the antenna's regular current flow by generating a local, out-of-phase current channel with the same amplitude. The presented antenna has an overall electrical dimension of 0.22×0.16×0.01 λ3 (λ is determined using the frequency of 2.1 GHz). The 1.6 mm thickness FR4 substrate serves as the development platform for the proposed multiband antenna. The antenna has good reflection coefficient (S11), voltage standing wave ratio (VSWR), radiation characteristics, anda peak gain of around 5.1 dB. The results show design usefulness for wireless applications and are consistent with the measured values.
Shilpa Biradar and Kishan Singh
IEEE
Sangita R Wategaonkar and Kishan Singh
IEEE
An annular ring slot based microstrip triangular frequency-reconfigurable patch antenna with switchable frequency is reported. The reported antenna which consists of two PIN diodes is a simple low profile structure. At the top of the antenna, a simple microstrip line is used, whereas the bottom side of the antenna is designed by annular ring slot on triangular patch. PIN diodes are used to create shot circuit or open circuit across the ring slot to produce three reconfigurable frequencies, 3.4 GHz, 3.8 GHz and 4.4 GHz. All frequency bands of the antenna exhibit stable radiation patterns, good impedance matching and required gains. The size of the proposed reconfigurable antenna is 43.3 x 37.5 mm2. All performance parameters of proposed antenna are obtained using commercially available method of moment based simulator, IE3D and verified by the measured results. The measured results are found the close similarity with the simulated results.
Basavalinga Swamy, C. M. Tavade, and Kishan Singh
Institute of Advanced Engineering and Science
The present wireless applications demand a compact, multi-operated, and stable radiation pattern antenna with good gain and impedance matching performance. To accomplish this requirement. In this paper, we propose a compact metamaterial structure loaded quad band antenna. The structural specifications/layout of the antenna consists of a circular ring monopole fed by a microstrip line. The ground part of the antenna is loaded with a metamaterial rectangular split-ring resonator (RSRR), an L-shaped slot, and two horizontally placed rectangular slots parallel to each other. No external matching circuit is utilized and impedance matching is solely controlled by the placement of slots. The antenna shows operation at 2.1 GHz (2.01-2.24 GHz, a bandwidth of 230 MHz (WLAN)), 4.5 GHz (4.35-4.66 GHz, a bandwidth of 310 MHz (C-band)), 5.5 GHz (5.37-5.77 GHz bandwidth of 400 MHz (WiMAX)), and 7.2 GHz (7.08-7.33 GHz, a bandwidth of 250 MHz (satellite band)). The antenna exhibits good gain and stable radiation pattern in both the plane and thus can be utilized for aforementioned applications.
Basavalinga Swamy, C. M. Tavade, and K. Singh
Begell House
Kishan Singh and S.N. Mulgi
Wiley
This article reports the design and development of horizontally U‐notched corner truncated square microstrip antenna (UCSQMA) for dual‐band operation. If one more U‐notch is placed perpendicular to the horizontal U‐notches on the radiating patch, the antenna resonates for triple band of frequencies. Further, if H‐slot is placed on the ground plane of this antenna, the antenna operates for single band and gives a maximum impedance bandwidth of 82.68% covering X to Ku bands without changing the nature of broadside radiation characteristics. The proposed antenna may find applications for the systems operating in the frequency range of 7.53 GHz to 18 GHz. Details of antenna design are described and experimental results are discussed. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:719–723, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27438
S. N. Mulgi and Kishan Singh
Wiley
A novel two‐element right angle slot loaded square microstrip array antenna (TESMAA) is presented for 52.18% of bandwidth and 11.22 dB of gain. The effect of different slots placed in the ground plane is studied for enhancing the bandwidth and gain. It is found that when bow‐tie slot is placed in the ground plane of TESMAA the antenna gives maximum 95.54% of bandwidth and 15.92 dB of gain without affecting the nature of broad side radiation characteristics. The design concepts of antennas are described and experimental results are discussed. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26110
N. M. Sameena, Kishan Singh, R. B. Konda, and S. N. Mulgi
Wiley
This article presents a novel design of complementary‐symmetry aperture‐coupled microstrip antenna for wideband, adequate gain, and low cross‐polarization. An experimental bandwidth of 129.51% with gain of 5.17 dB is achieved. The antenna operates from 3.85 to 18 GHz, which covers C, X, and Ku bands. The obtained cross‐polar power level is −30.5 dB down with respect to co‐polar. The effectof coupling aperture and microstrip feedline is studied and reported. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 403–406, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24952
Kishan Singh, R. B. Konda, N. M. Sameena, and S. N. Mulgi
Wiley
A novel design of square microstrip antenna is designed for dual band operation. By embedding unequal length inverted right angle slot at optimum place on the square patch, the upper operating band enhanced from 27.53 to 60.01% with minimum change in the lower operating band retaining the nature of broad side radiation characteristics. The proposed antennas may find application in radar communication. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2578–2582, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24678