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Papers by Namrata Langhnoja
Terahertz Devices, Circuits and Systems, 2022
RADIOELECTRONIC AND COMPUTER SYSTEMS
The dielectric material used as a substrate and the shapes of the patches play an important role ... more The dielectric material used as a substrate and the shapes of the patches play an important role in the performance of bandwidth, return loss, and gain of the microstrip patch antenna. This paper presents the relative study of different shapes of microstrip Patch antenna for different dielectric materials. The main application of these antennas is for satellite communication in Ku-Band. The height of the substrate plays an essential role in the enhancement of bandwidth and it is chosen 1.012mm and three substrate materials (RT Duroid (5880), Teflon, and FR4) with different dielectric constants were chosen for the performance comparison. Aperture coupling, which is again one of the promising techniques for bandwidth enhancement, is used as a feeding technique for the designs. Coupling must be taken care of while using aperture coupling, which is done by precisely optimizing the feed line dimensions, feed position, slot dimensions, and patch dimensions. The antenna performance is stud...
An antenna cannot be able to meet the radiation characteristics for some applications. Thus, it r... more An antenna cannot be able to meet the radiation characteristics for some applications. Thus, it requires combination of several single antennas forming an array structure. The arrangement of single antennas named as point source form a linear or planar antenna array structure, as shown in Fig. 5.1. The overall radiation pattern is determined by array factor. Directivity and number of side lobes with increase with number of point sources. In this investigation work, planar arrays are considered.
Design of unit cell of Microstrip Reflectarray Antenna (MRA) is one of important parameters. Usin... more Design of unit cell of Microstrip Reflectarray Antenna (MRA) is one of important parameters. Using infinite array approach method, resonant element of MRA is observed in unit cell environment. The reflection phase curve helps to characterize different shapes of resonant elements. Keywords— Unit-cell environment, Infinite array approach, Reflection Phase Curve, Figure of Merit, Static Phase Range
International Journal of Advance Research and Innovative Ideas in Education, 2017
Microstrip patch antenna (MPA) has become an integral part of wireless communication system becau... more Microstrip patch antenna (MPA) has become an integral part of wireless communication system because of their advantages such as low profile, light weight, available with planner and non-planner structure. The increasing growth of wireless system requires miniaturized antenna. Conventional antenna size is about half wavelength. With the development of the technologies wireless systems becoming more and more compact so antenna size must have been reduced. This study shows some of the techniques to reduce size of microstrip patch antenna. This miniaturization techniques include use of high permittivity єr materials, use of meta- materials, Sierpinski carpet fractal method, using pins between patch and ground plane, introducing slots in the patch. The major features and drawbacks of these methods are highlighted in this study.
2015 International Conference on Electrical, Electronics, Signals, Communication and Optimization (EESCO), 2015
The main objective of designing a Microstrip Reflectarray Antenna is to exploit for the Ku-Band, ... more The main objective of designing a Microstrip Reflectarray Antenna is to exploit for the Ku-Band, Designing parameters concentrates on the phase and bandwidth. Development and wide usage of communication through the wireless media gives an opportunity for the research and development of small antennas. Such an antenna is deployable at the base stations as well as on to the satellites. Hence, miniaturization is one of the important requirements. The paper reviews the phase response of the reflectarray antenna to achieve a planar wave front, techniques to improve the bandwidth as well as for miniaturization of microstrip reflectarray antenna.
2017 International Conference on Computer, Communications and Electronics (Comptelix), 2017
Design of unit cell of Microstrip Reflectarray Antenna (MRA) is one of important parameter. Using... more Design of unit cell of Microstrip Reflectarray Antenna (MRA) is one of important parameter. Using infinite array approach method, resonant element of MRA is observed in unit cell environment. The reflection phase curve helps to compare the different commercially available dielectric materials.
Terahertz Devices, Circuits and Systems, 2022
RADIOELECTRONIC AND COMPUTER SYSTEMS
The dielectric material used as a substrate and the shapes of the patches play an important role ... more The dielectric material used as a substrate and the shapes of the patches play an important role in the performance of bandwidth, return loss, and gain of the microstrip patch antenna. This paper presents the relative study of different shapes of microstrip Patch antenna for different dielectric materials. The main application of these antennas is for satellite communication in Ku-Band. The height of the substrate plays an essential role in the enhancement of bandwidth and it is chosen 1.012mm and three substrate materials (RT Duroid (5880), Teflon, and FR4) with different dielectric constants were chosen for the performance comparison. Aperture coupling, which is again one of the promising techniques for bandwidth enhancement, is used as a feeding technique for the designs. Coupling must be taken care of while using aperture coupling, which is done by precisely optimizing the feed line dimensions, feed position, slot dimensions, and patch dimensions. The antenna performance is stud...
An antenna cannot be able to meet the radiation characteristics for some applications. Thus, it r... more An antenna cannot be able to meet the radiation characteristics for some applications. Thus, it requires combination of several single antennas forming an array structure. The arrangement of single antennas named as point source form a linear or planar antenna array structure, as shown in Fig. 5.1. The overall radiation pattern is determined by array factor. Directivity and number of side lobes with increase with number of point sources. In this investigation work, planar arrays are considered.
Design of unit cell of Microstrip Reflectarray Antenna (MRA) is one of important parameters. Usin... more Design of unit cell of Microstrip Reflectarray Antenna (MRA) is one of important parameters. Using infinite array approach method, resonant element of MRA is observed in unit cell environment. The reflection phase curve helps to characterize different shapes of resonant elements. Keywords— Unit-cell environment, Infinite array approach, Reflection Phase Curve, Figure of Merit, Static Phase Range
International Journal of Advance Research and Innovative Ideas in Education, 2017
Microstrip patch antenna (MPA) has become an integral part of wireless communication system becau... more Microstrip patch antenna (MPA) has become an integral part of wireless communication system because of their advantages such as low profile, light weight, available with planner and non-planner structure. The increasing growth of wireless system requires miniaturized antenna. Conventional antenna size is about half wavelength. With the development of the technologies wireless systems becoming more and more compact so antenna size must have been reduced. This study shows some of the techniques to reduce size of microstrip patch antenna. This miniaturization techniques include use of high permittivity єr materials, use of meta- materials, Sierpinski carpet fractal method, using pins between patch and ground plane, introducing slots in the patch. The major features and drawbacks of these methods are highlighted in this study.
2015 International Conference on Electrical, Electronics, Signals, Communication and Optimization (EESCO), 2015
The main objective of designing a Microstrip Reflectarray Antenna is to exploit for the Ku-Band, ... more The main objective of designing a Microstrip Reflectarray Antenna is to exploit for the Ku-Band, Designing parameters concentrates on the phase and bandwidth. Development and wide usage of communication through the wireless media gives an opportunity for the research and development of small antennas. Such an antenna is deployable at the base stations as well as on to the satellites. Hence, miniaturization is one of the important requirements. The paper reviews the phase response of the reflectarray antenna to achieve a planar wave front, techniques to improve the bandwidth as well as for miniaturization of microstrip reflectarray antenna.
2017 International Conference on Computer, Communications and Electronics (Comptelix), 2017
Design of unit cell of Microstrip Reflectarray Antenna (MRA) is one of important parameter. Using... more Design of unit cell of Microstrip Reflectarray Antenna (MRA) is one of important parameter. Using infinite array approach method, resonant element of MRA is observed in unit cell environment. The reflection phase curve helps to compare the different commercially available dielectric materials.