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Singhal, P. K.
- Incorporation of Metamaterial with Patch Antenna for Microwave Sensor
Abstract Views :141 |
PDF Views:3
Authors
Affiliations
1 Madhav Institute of Technology and Science, IN
1 Madhav Institute of Technology and Science, IN
Source
Wireless Communication, Vol 4, No 15 (2012), Pagination: 880-883Abstract
This paper proposed a patch antenna incorporated with wheel shaped metamaterial structure for microwave sensors. Metamaterial exhibits unconventional properties such as negative permeability and negative permittivity. Metamaterials obtained their properties from their structure rather than composition.
Metamaterial is used for proper impedance matching of patch antenna. It reduces return loss of antenna and increases the gain of antenna. This antenna has been simulated at 2.1GHz frequency (R-Band) using CST software. Incorporation of metamaterial with patch antenna reduces back lobe radiations of patch antenna hence increases the directivity of antenna. The proposed antenna design has good agreement with its directional properties and also miniaturize patch antenna so it can be used in microwave sensors In previous work different designs of metamaterial have been presented. Most of them are designed for optical frequencies. In this paper a new structure of metamaterial is designed and analyzed for R-band of microwave frequency range.
Keywords
Metamaterial, Microwave Sensor, Patch Antenna, Permittivity, Permeability.
- Performance Tested of Micro Strip Fractal Antenna for Wireless Communication
Abstract Views :170 |
PDF Views:3
Authors
Affiliations
1 Rajiv Gandhi Proudyogiki Vishwavidyalaya, BHOPAL (MP), IN
2 Madhav Institute of Technology and Science, Gwalior (MP), IN
1 Rajiv Gandhi Proudyogiki Vishwavidyalaya, BHOPAL (MP), IN
2 Madhav Institute of Technology and Science, Gwalior (MP), IN
Source
Wireless Communication, Vol 4, No 16 (2012), Pagination: 979-983Abstract
The multiband behavior of fractal Sierpinski antenna is described in this paper. Since there is great demand of multiband antenna in many microwave application like wireless, wimax, defense and other many applications. Proposed microstrip fractal patch antenna is fabricated on a printed circuit board with coaxial feed microstrip fractal antenna and effect of 1st iteration is analyzed. In this paper simulated and measured results are compared & shown. Proposed antenna has design frequency of 3.2 Ghz and IE3D software is used for simulation, which is based on method of moment. Both experimental & simulated result show that similarity properties of fractal shapes are translated into its electromagnetic behavior for multifrequency application. Simulated and measured result are shown for better understanding.Keywords
Fractal, Antenna, Return Loss, VSWR, Multi Frequency Antenna.- Isolation and Biochemical Characterization of Bacteria Present in Roots of Water Hyacinth (Eichhornia crassipes (Mart) Solm.) in Robertson Lake Jabalpur.
Abstract Views :165 |
PDF Views:0
Authors
Affiliations
1 School of Studies in Life Sciences, Pt. Ravi Shankar Shukla University, Raipur, (C G) 492010, IN
2 Department of Biological Sciences, Rani Durgawati University, Jabalpur, IN
1 School of Studies in Life Sciences, Pt. Ravi Shankar Shukla University, Raipur, (C G) 492010, IN
2 Department of Biological Sciences, Rani Durgawati University, Jabalpur, IN
Source
Research Journal of Science and Technology, Vol 3, No 3 (2011), Pagination: 164-168Abstract
The present study was conducted to isolate bacteria from ischolar_main of Eichhornia crassipes (water hyacinth). Bacteria were isolated in tryphtone glucose yeast extract agar (TGYEA) medium during different phases of growth of water hyacinth in Robertson lake and on basis of biochemical characteristics probable identification was done by using a PIB program, given by Bryant (1989). A total of 30 bacteria were isolated from ischolar_mains of the growing water hyacinth plants in the Robertson lake Jabalpur. Out of 30 bacteria, 25 were gram - negative rods, comprising of 23 fermentative and 2 non - fermentative, 3 were gram - positive rods, and 2 were gram - positive cocci. Most of the bacteria were able to hydrolyze starch and glucose, and reduce NO3 to NO2, indicating their active role in transformation of C and N. The presence of gelatinase enzyme in most of the bacteria has indicated their role in active degradation of organic N.Keywords
Water Hyacinth, Bacteria, Aquatic Ecosystem, Robertson Lake, C and N Transformation.- Improving Principle Design of Rectangular SRR Based Metamaterial Structure with Negative μ and ε for Characteristics of Rectangular Microstrip Patch Antenna
Abstract Views :94 |
PDF Views:0
Authors
Bimal Garg
1,
P. K. Singhal
1
Affiliations
1 Department of Electronics Engineering, Madhav Institute of Technology and Science, Gwalior, IN
1 Department of Electronics Engineering, Madhav Institute of Technology and Science, Gwalior, IN
Source
International Journal of Engineering Research, Vol 1, No 2 (2012), Pagination: 39-44Abstract
This work is mainly focused on improving the principle characteristics of RMPA. Here design of rectangular SRR based metamaterial structure is proposed, which has been superimposed on RMPA at a height of 3.2mm from its ground plane. The resonating frequency of the proposed antenna is 1.896GHz. Simulation results are suggested that the impedance bandwidth of RMPA with proposed metamaterial structure is improved by 20.9MHz and return loss is reduced by 33.83dB. For proving double negative properties (Negative Permeability and Permittivity) of proposed metamaterial structure within the operating frequency range, Nicolson-Ross-Weir method (NRW) has been employed. All the Simulation results have been obtained by using CST-MWS Software.Keywords
Rectangular Microstrip Patch Antenna (RMPA), Impedance Bandwidth, Return Loss, Nicolson-Ross-Weir (NRW), Split Ring Resonator (SRR).Full Text