Ekta Chauhan - Academia.edu (original) (raw)

Papers by Ekta Chauhan

Invertis Journal of Science & Technology, 2012

Although BCS theory completely neglects coulomb repulsion; Anderson and Morel showed very early t... more Although BCS theory completely neglects coulomb repulsion; Anderson and Morel showed very early that it plays a central role in superconductivity. Since all high TC superconductors are based on the structure of closely spaced square planner CuO2 layers and role of interlayer interaction plays important role in enhancement of TC. Therefore the present work deals with ‘Role of Coulomb repulsion in Multilayer Cuprate Superconductor’. An expression for transition temperature TC is obtained by using simple integration technique and is numerically solved. It has been found that TC decreases with electronic repulsion.

In the present work annular microstrip patch antenna has been reconfigured using annular rectangu... more In the present work annular microstrip patch antenna has been reconfigured using annular rectangular patch and its simulation has been done on substrate FR4 (Dielectric Constant 4.4). The antenna is slotted with pin in the ground layer. This paper presents the design structure of Annular Microstrip Patch Antenna and simulation in range from S - band to Ku -band. In the present work, return loss, VSWR, gain and directivity of designed antenna has been computed. The proposed antenna is more compact to the other kind of antenna and finds utility for multiband satellite communication.

Journal of physics, Oct 1, 2020

This paper presented for investigation, how the defects as well as slots of different shapes and ... more This paper presented for investigation, how the defects as well as slots of different shapes and sizes on the ground of microstrip patch antenna (MPA) improve its characteristics like VSWR, Return Loss, efficiency, etc. This has been done by cutting a rectangular shape of defect on the ground and cut a slot on the goblet shaped patch of designed antenna structure. This microstrip antenna is suitable for tracking data, satellite communication, etc. The performance and advantages of microstrip antenna such as low cost, low profile, low weight made them the perfect choice for communication systems. In the proposed defected ground microstrip patch antenna (DG - MP A), a rectangular slot (1.25mm × 3.75mm) is cut on the Goblet Patch (10.71mm ×41. 5mm ×1. 5mm) of the structure. An inset feed (-11mm x 6mm) is introduced in this microstrip antenna. The antenna designed to function at 2.2 GHz. The proposed antenna not only operate at 2.2 GHz frequency, but also offers Return loss -26.86, VSWR 0.78, with frequency 12.85 GHz (Ku - band).

International journal of home science, 2016

Cruciferous vegetables are one of the dominant food crops worldwide. Cruciferous vegetables are v... more Cruciferous vegetables are one of the dominant food crops worldwide. Cruciferous vegetables are vegetables of family Brassicaceae (also called cruciferae). They are good source of many health promoting and potentially protective phytochemicals including folic acid, phenolics, carotenoids, selenium, glucosinolates and vitamin c. Incorporating these potent plant based compounds in daily food is a safe, effective and easily available way to guard against many of today’s most common diseases. The KnolKhol (Brassica caulorapa) is cool season cruciferous vegetable. Present study was conducted to assess the qualitative phytochemical analysis of knol-khol powder and juice. The extract of powder and juice of knol-khol reveals the presence of many phytochemicals such as alkaloids, glycosides, flavonoids, saponnin, tannin, steroids, terpenes and phytosterols. The compounds isolated from this vegetable possess very important biological activities including anti-diabetic, antioxidant, hypolipide...

In this paper, a novel design of an elliptical patch antenna is presented for ultra wideband wire... more In this paper, a novel design of an elliptical patch antenna is presented for ultra wideband wireless communication applications. Designed Microstrip patch antenna consists of an elliptical patch which is found to resonate at frequencies 4.4897 GHz and 6.6938 GHz, with return loss-12.37 dB and-20.21 dB respectively with satisfactory radiation properties. The results are simulated by using a software called High Frequency Structure Simulator (HFSS 13.0). The proposed antenna is a compact design of 30mm × 30 mm 2 area on the FR4-epoxy substrate with dielectric constant of 4.4 and thickness of 1.8 mm. The designed antenna structure with o.91 dBi and 5.77 dBi gain is planar, simple and compact hence it can be easily embedded in wireless communication systems and integrated with microwave circuitry for low manufacturing cost, this design is mainly suitable for C-band applications.

A compact circular microstrip is presented. The presented configuration consists of a circular pa... more A compact circular microstrip is presented. The presented configuration consists of a circular patch which has been given the probe feeding for the excitation. A comparative study of the behavior of the antenna is presented when the circular patch is simulated with the feed, then with a slot and finally with the shorting post. The substrate used is FR4 Epoxy and the antenna dimension is 20mm*20mm*1.8mm. The antenna proposed is well potential for C-band applications and hence mobile communication handsets where limited antenna size is a premium. But after the addition of the shorting post the antenna was found to suitable for X-band applications. From the given trends, valuable insight to the antenna behavior to the optimum design, namely, broad bandwidth, smile size and ease of manufacturing is given.

The designed antenna is about elliptical Microstrip patch antenna with a slot where two diodes ar... more The designed antenna is about elliptical Microstrip patch antenna with a slot where two diodes are placed on the slot. The design of the antenna is based on diode conditions ON and OFF. This antenna is tested and simulated and the gain of antenna is being improved for different conditions at two frequencies 8.5306GHz and 8.7143GHz. Slot antenna works in single band and multiband frequency. The antenna has a substrate designed on FR4epoxy. A variation in parameters like radiated power, gain and directivity is achieved. Working and testing is done by utilizing simulator Ansoft HFSS. The results are checked and evaluated for the proposed antenna.

2018 Recent Advances on Engineering, Technology and Computational Sciences (RAETCS)

In the present work annular microstrip patch antenna has been reconfigured using annular rectangu... more In the present work annular microstrip patch antenna has been reconfigured using annular rectangular patch and its simulation has been done on substrate FR4 (Dielectric Constant 4.4). The antenna is slotted with pin in the ground layer. This paper presents the design structure of Annular Microstrip Patch Antenna and simulation in range from S - band to Ku -band. In the present work, return loss, VSWR, gain and directivity of designed antenna has been computed. The proposed antenna is more compact to the other kind of antenna and finds utility for multiband satellite communication.

Journal of Medicinal Plants Studies, 2016

Cruciferous vegetables are one of the dominant food crops worldwide. Cruciferous vegetables are v... more Cruciferous vegetables are one of the dominant food crops worldwide. Cruciferous vegetables are vegetables of family Brassicaceae (also called cruciferae). They are good source of many health promoting and potentially protective phytochemicals including folic acid, phenolics, carotenoids, selenium, glucosinolates and vitamin c. Incorporating these potent plant based compounds in daily food is a safe, effective and easily available way to guard against many of today’s most common diseases. The Red cabbage (Brassica oleracea) is cool season cruciferous vegetable. Present study was conducted to assess the qualitative phytochemical analysis of red cabbage powder and juice. The extract of powder and juice of red cabbage reveals the presence of many phytochemicals such as alkaloids, glycosides, flavonoids, saponin, tannin, steroids, terpenes and phytosterols. The compounds isolated from this vegetable possess very important biological activities including anti-diabetic, antioxidant, hypol...

Although BCS theory completely neglects coulomb repulsion; Anderson and Morel showed very early t... more Although BCS theory completely neglects coulomb repulsion; Anderson and Morel showed very early that it plays a central role in superconductivity. Since all high TC superconductors are based on the structure of closely spaced square planner CuO2 layers and role of interlayer interaction plays important role in enhancement of TC. Therefore the present work deals with ‘Role of Coulomb repulsion in Multilayer Cuprate Superconductor’. An expression for transition temperature TC is obtained by using simple integration technique and is numerically solved. It has been found that TC decreases with electronic repulsion.

In the present work annular microstrip patch antenna has been reconfigured using annular rectangu... more In the present work annular microstrip patch antenna has been reconfigured using annular rectangular patch and its simulation has been done on substrate FR4 (Dielectric Constant 4.4). The antenna is slotted with pin in the ground layer. This paper presents the design structure of Annular Microstrip Patch Antenna and simulation in range from S - band to Ku -band. In the present work, return loss, VSWR, gain and directivity of designed antenna has been computed. The proposed antenna is more compact to the other kind of antenna and finds utility for multiband satellite communication.

International Journal of Engineering Trends and Technology

This paper is a comparative study of a rectangular microstrip patch antenna and a rectangular slo... more This paper is a comparative study of a rectangular microstrip patch antenna and a rectangular slotted reconfigurable microstrip patch antenna with pin diode. Antenna 1 has rectangular patch and Antenna 2 has a slot and a pin diode between slotted areas of the rectangular patch. The analysis is based on the antenna parameters such as return loss, VSWR, gain, directivity and radiation pattern and the operating frequency. As per IEEE standard, the designed antennas are applicable for k and Ka band application. The design and simulation has been done by using Ansoft HFSS software with substrate FR4_epoxy, which has dielectric constant 4.4 and tangent loss 0.02. The analysis shows that the values of antenna parameters change with the change in the geometry of the patch such as introducing slots and pin diode. The designed antenna has the operating frequencies of 19.35 GHz, 19.94 GHz, 27.04 GHz and 28.22 GHz and return loss of -27.85 dB, -23.26 dB, -33.05 dB, -25.86 dB and stable radiation pattern, omnidirectional and circular polarization at these operating frequencies.

Invertis Journal of Science & Technology, 2012

Although BCS theory completely neglects coulomb repulsion; Anderson and Morel showed very early t... more Although BCS theory completely neglects coulomb repulsion; Anderson and Morel showed very early that it plays a central role in superconductivity. Since all high TC superconductors are based on the structure of closely spaced square planner CuO2 layers and role of interlayer interaction plays important role in enhancement of TC. Therefore the present work deals with ‘Role of Coulomb repulsion in Multilayer Cuprate Superconductor’. An expression for transition temperature TC is obtained by using simple integration technique and is numerically solved. It has been found that TC decreases with electronic repulsion.

In the present work annular microstrip patch antenna has been reconfigured using annular rectangu... more In the present work annular microstrip patch antenna has been reconfigured using annular rectangular patch and its simulation has been done on substrate FR4 (Dielectric Constant 4.4). The antenna is slotted with pin in the ground layer. This paper presents the design structure of Annular Microstrip Patch Antenna and simulation in range from S - band to Ku -band. In the present work, return loss, VSWR, gain and directivity of designed antenna has been computed. The proposed antenna is more compact to the other kind of antenna and finds utility for multiband satellite communication.

Journal of physics, Oct 1, 2020

This paper presented for investigation, how the defects as well as slots of different shapes and ... more This paper presented for investigation, how the defects as well as slots of different shapes and sizes on the ground of microstrip patch antenna (MPA) improve its characteristics like VSWR, Return Loss, efficiency, etc. This has been done by cutting a rectangular shape of defect on the ground and cut a slot on the goblet shaped patch of designed antenna structure. This microstrip antenna is suitable for tracking data, satellite communication, etc. The performance and advantages of microstrip antenna such as low cost, low profile, low weight made them the perfect choice for communication systems. In the proposed defected ground microstrip patch antenna (DG - MP A), a rectangular slot (1.25mm × 3.75mm) is cut on the Goblet Patch (10.71mm ×41. 5mm ×1. 5mm) of the structure. An inset feed (-11mm x 6mm) is introduced in this microstrip antenna. The antenna designed to function at 2.2 GHz. The proposed antenna not only operate at 2.2 GHz frequency, but also offers Return loss -26.86, VSWR 0.78, with frequency 12.85 GHz (Ku - band).

International journal of home science, 2016

Cruciferous vegetables are one of the dominant food crops worldwide. Cruciferous vegetables are v... more Cruciferous vegetables are one of the dominant food crops worldwide. Cruciferous vegetables are vegetables of family Brassicaceae (also called cruciferae). They are good source of many health promoting and potentially protective phytochemicals including folic acid, phenolics, carotenoids, selenium, glucosinolates and vitamin c. Incorporating these potent plant based compounds in daily food is a safe, effective and easily available way to guard against many of today’s most common diseases. The KnolKhol (Brassica caulorapa) is cool season cruciferous vegetable. Present study was conducted to assess the qualitative phytochemical analysis of knol-khol powder and juice. The extract of powder and juice of knol-khol reveals the presence of many phytochemicals such as alkaloids, glycosides, flavonoids, saponnin, tannin, steroids, terpenes and phytosterols. The compounds isolated from this vegetable possess very important biological activities including anti-diabetic, antioxidant, hypolipide...

In this paper, a novel design of an elliptical patch antenna is presented for ultra wideband wire... more In this paper, a novel design of an elliptical patch antenna is presented for ultra wideband wireless communication applications. Designed Microstrip patch antenna consists of an elliptical patch which is found to resonate at frequencies 4.4897 GHz and 6.6938 GHz, with return loss-12.37 dB and-20.21 dB respectively with satisfactory radiation properties. The results are simulated by using a software called High Frequency Structure Simulator (HFSS 13.0). The proposed antenna is a compact design of 30mm × 30 mm 2 area on the FR4-epoxy substrate with dielectric constant of 4.4 and thickness of 1.8 mm. The designed antenna structure with o.91 dBi and 5.77 dBi gain is planar, simple and compact hence it can be easily embedded in wireless communication systems and integrated with microwave circuitry for low manufacturing cost, this design is mainly suitable for C-band applications.

A compact circular microstrip is presented. The presented configuration consists of a circular pa... more A compact circular microstrip is presented. The presented configuration consists of a circular patch which has been given the probe feeding for the excitation. A comparative study of the behavior of the antenna is presented when the circular patch is simulated with the feed, then with a slot and finally with the shorting post. The substrate used is FR4 Epoxy and the antenna dimension is 20mm*20mm*1.8mm. The antenna proposed is well potential for C-band applications and hence mobile communication handsets where limited antenna size is a premium. But after the addition of the shorting post the antenna was found to suitable for X-band applications. From the given trends, valuable insight to the antenna behavior to the optimum design, namely, broad bandwidth, smile size and ease of manufacturing is given.

The designed antenna is about elliptical Microstrip patch antenna with a slot where two diodes ar... more The designed antenna is about elliptical Microstrip patch antenna with a slot where two diodes are placed on the slot. The design of the antenna is based on diode conditions ON and OFF. This antenna is tested and simulated and the gain of antenna is being improved for different conditions at two frequencies 8.5306GHz and 8.7143GHz. Slot antenna works in single band and multiband frequency. The antenna has a substrate designed on FR4epoxy. A variation in parameters like radiated power, gain and directivity is achieved. Working and testing is done by utilizing simulator Ansoft HFSS. The results are checked and evaluated for the proposed antenna.

2018 Recent Advances on Engineering, Technology and Computational Sciences (RAETCS)

In the present work annular microstrip patch antenna has been reconfigured using annular rectangu... more In the present work annular microstrip patch antenna has been reconfigured using annular rectangular patch and its simulation has been done on substrate FR4 (Dielectric Constant 4.4). The antenna is slotted with pin in the ground layer. This paper presents the design structure of Annular Microstrip Patch Antenna and simulation in range from S - band to Ku -band. In the present work, return loss, VSWR, gain and directivity of designed antenna has been computed. The proposed antenna is more compact to the other kind of antenna and finds utility for multiband satellite communication.

Journal of Medicinal Plants Studies, 2016

Cruciferous vegetables are one of the dominant food crops worldwide. Cruciferous vegetables are v... more Cruciferous vegetables are one of the dominant food crops worldwide. Cruciferous vegetables are vegetables of family Brassicaceae (also called cruciferae). They are good source of many health promoting and potentially protective phytochemicals including folic acid, phenolics, carotenoids, selenium, glucosinolates and vitamin c. Incorporating these potent plant based compounds in daily food is a safe, effective and easily available way to guard against many of today’s most common diseases. The Red cabbage (Brassica oleracea) is cool season cruciferous vegetable. Present study was conducted to assess the qualitative phytochemical analysis of red cabbage powder and juice. The extract of powder and juice of red cabbage reveals the presence of many phytochemicals such as alkaloids, glycosides, flavonoids, saponin, tannin, steroids, terpenes and phytosterols. The compounds isolated from this vegetable possess very important biological activities including anti-diabetic, antioxidant, hypol...

Although BCS theory completely neglects coulomb repulsion; Anderson and Morel showed very early t... more Although BCS theory completely neglects coulomb repulsion; Anderson and Morel showed very early that it plays a central role in superconductivity. Since all high TC superconductors are based on the structure of closely spaced square planner CuO2 layers and role of interlayer interaction plays important role in enhancement of TC. Therefore the present work deals with ‘Role of Coulomb repulsion in Multilayer Cuprate Superconductor’. An expression for transition temperature TC is obtained by using simple integration technique and is numerically solved. It has been found that TC decreases with electronic repulsion.

In the present work annular microstrip patch antenna has been reconfigured using annular rectangu... more In the present work annular microstrip patch antenna has been reconfigured using annular rectangular patch and its simulation has been done on substrate FR4 (Dielectric Constant 4.4). The antenna is slotted with pin in the ground layer. This paper presents the design structure of Annular Microstrip Patch Antenna and simulation in range from S - band to Ku -band. In the present work, return loss, VSWR, gain and directivity of designed antenna has been computed. The proposed antenna is more compact to the other kind of antenna and finds utility for multiband satellite communication.

International Journal of Engineering Trends and Technology

This paper is a comparative study of a rectangular microstrip patch antenna and a rectangular slo... more This paper is a comparative study of a rectangular microstrip patch antenna and a rectangular slotted reconfigurable microstrip patch antenna with pin diode. Antenna 1 has rectangular patch and Antenna 2 has a slot and a pin diode between slotted areas of the rectangular patch. The analysis is based on the antenna parameters such as return loss, VSWR, gain, directivity and radiation pattern and the operating frequency. As per IEEE standard, the designed antennas are applicable for k and Ka band application. The design and simulation has been done by using Ansoft HFSS software with substrate FR4_epoxy, which has dielectric constant 4.4 and tangent loss 0.02. The analysis shows that the values of antenna parameters change with the change in the geometry of the patch such as introducing slots and pin diode. The designed antenna has the operating frequencies of 19.35 GHz, 19.94 GHz, 27.04 GHz and 28.22 GHz and return loss of -27.85 dB, -23.26 dB, -33.05 dB, -25.86 dB and stable radiation pattern, omnidirectional and circular polarization at these operating frequencies.