Kumar Vaibhav Srivastava

Design and Comparative Structural Analysis of Aluminum-Based Hybrid Hollow Drive Shafts using GFRP and CFRP Open

Kumar Vaibhav Srivastava · 2025

This paper presents a comparative study of two hybrid hollow drive shaft configurations using Aluminum 2024-T6 as the outer shell material and GFRP or CFRP as the inner core. The goal is to evaluate which composite material provides better…

Wideband RCS Reduction of a Linear Patch Antenna Array Using AMC Metasurface for Stealth Applications Open

Baisakhi Bandyopadhyay, Sudeb Bhattacharya, Rahul Kumar Jaiswal, Mondeep Saikia, Kumar Vaibhav Srivastava · 2023

This article presents a linear microstrip patch antenna array at the X-band that incorporates an aperiodic artificial magnetic conductor (AMC) metasurface which utilizes phase cancellation techniques for reducing both the in-band and out-o…

Vivaldi Antenna with Enhanced Gain using ZIM (Zero Index Metamaterial) Open

PALASH SHUKLA, Kumar Vaibhav Srivastava · 2022

In this article, an exponential tapered Vivaldi antenna is designed. A ZIM (Zero Index Metamaterial) is introduced into the antenna to enhance its gain in whole of the ultrawideband. The proposed structure is covering the ultrawideband of …

Wideband Bidirectional Same Sense Endfire Circularly Polarized Antenna Open

Rahul Kumar Jaiswal, Anuj Kumar Ojha, Kahani Kumari, Kumar Vaibhav Srivastava, Chow‐Yen‐Desmond Sim · 2022

In this paper, a wideband bidirectional endfire circularly polarized (CP) antenna is proposed by combining two endfire CP antennas with a single coaxial probe feed. The wideband characteristics are achieved with the help of a two-layered s…

A polarization‐insensitive time‐modulated frequency‐selective surface for broad frequency range Open

Mondeep Saikia, Kumar Vaibhav Srivastava, S. Anantha Ramakrishna · 2021

Usually, Radar signature of an object is reduced using microwave absorber surface. Recently, another approach based on time‐modulated frequency‐selective surfaces has been developed to deceive Radar detection by selectively generating harm…

Programme Open

Mr Singh, Mr Kamlesh, Kumar Vaibhav Srivastava, Mr Anuj, Nagendra Kumar Maurya , et al. · 2021

DESIGN AND ANALYSIS OF POLARIZATION-INSENSITIVE BROADBAND MICROWAVE ABSORBER FOR PERFECT ABSORPTION Open

Sudha Malik, Mondeep Saikia, Aditi Sharma, Gaganpreet Singh, J. Ramkumar , et al. · 2021

A REVIEW OF METASURFACE-ASSISTED RCS REDUCTION TECHNIQUES Open

Akila Murugesan, Krishnasamy T. Selvan, Ashwin K. Iyer, Kumar Vaibhav Srivastava, Arokiaswami Alphones · 2021

This review discusses the evolution of the various radar cross-section (RCS) reduction techniques, with an emphasis on metasurfaces. The paper first introduces the terms RCS and RCS reduction and then discusses conventional and modern tech…

Broken symmetries and the related interface-induced effects at Weyl-system TaAs in proximity of noble metals Open

Tuhin Kumar Maji, Kumar Vaibhav Srivastava, Samir Kumar Pal, Debjani Karmakar · 2020

Weyl semimetal TaAs, congenially accommodating the massless Weyl fermions, furnishes a platform to observe a spontaneous breaking of either the time-reversal or the inversion symmetry and the concurrent genesis of pairs of Weyl nodes with …

Broken Inversion Symmetry and Interface-induced Spin-polarization for metal-Weyl semimetal stacked interfaces Open

Tuhin Kumar Maji, Kumar Vaibhav Srivastava, Samir Kumar Pal, Debjani Karmakar · 2020

Weyl semimetal TaAs, a congenial host to the massless Weyl fermions, spontaneously lacks the time-reversal and the inversion symmetry and thus effectuates topologically stable Weyl nodes, resembling magnetic monopoles in momentum space. Fo…

SCATTERING AND COUPLING REDUCTION OF DIPOLE ANTENNA USING GRADIENT INDEX METAMATERIAL BASED CLOAK Open

Mahesh Singh Bisht, Kumar Vaibhav Srivastava · 2020

Intriguing electronic and optical prospects of FCC bimetallic heterostructures: large area interface versus embedded and doped nanostructures Open

Tuhin Kumar Maji, Kumar Vaibhav Srivastava, Ranjit Hawaldar, K. V. Adarsh, Samir Kumar Pal , et al. · 2019

Room temperature superconductivity and large-area epsilon-near-zero interfaces are long-standing goals of Condensed Matter Physics and Optics. Motivated by the recent advancements of experimental scenario of metallic nanostructures, we hav…

Convolutional Neural Network for Classification for Indian Jewellery Open

Kumar Vaibhav Srivastava, Jagdish Prasad, Baldev Singh · 2019

Compact four‐element SRR‐loaded dual‐band MIMO antenna for WLAN/WiMAX/WiFi/4G‐LTE and 5G applications Open

Debdeep Sarkar, Kumar Vaibhav Srivastava · 2017

A four‐element dual‐band MIMO configuration consisting of split‐ring resonator (SRR)‐loaded inverted L‐monopole antenna elements is realised. In the proposed antenna, the lower‐frequency mode of the unloaded MIMO configuration merges with …

An Ontological Learning Management System Open

Monika Rani, Kumar Vaibhav Srivastava, O. P. Vyas · 2017

The current learning systems typically lack the level of metacognitive awareness, self-directed learning, and time management skills. Most of the ontologically based learning management systems are in the proposed phase and those which are…

CRLH TL-unit cell loaded tri-band circularly polarized crossed dipole antenna Open

Kushmanda Saurav, Debdeep Sarkar, Yogesh Singh, Kumar Vaibhav Srivastava · 2016

In this paper, two unit cells of a via-less Composite Right/Left handed Transmission Line (CRLH TL) are loaded on the arms of a reference double sided printed dipole antenna to achieve tri-band operation. A pair of CRLH TL loaded tri-band …

Specially designed microstrip patch antenna parameter optimization by artificial neural network Open

Sangeeta Shekhawat, Sudhanshu Singh, Kumar Vaibhav Srivastava, Ashok Kajala · 2016

Four‐element quad‐band multiple‐input–multiple‐output antenna employing split‐ring resonator and inter‐digital capacitor Open

Debdeep Sarkar, Aditya Singh, Kushmanda Saurav, Kumar Vaibhav Srivastava · 2015

In this study, a novel four‐element multiple‐input–multiple‐output (MIMO) antenna having quad‐band characteristics is proposed. A coplanar waveguide‐fed monopole is loaded with a split‐ring resonator and an inter‐digital capacitor to achie…

Wide‐angle broadband microwave metamaterial absorber with octave bandwidth Open

Somak Bhattacharyya, Saptarshi Ghosh, Devkinandan Chaurasiya, Kumar Vaibhav Srivastava · 2015

In this study, a broadband metamaterial absorber is presented with octave bandwidth for practical applications. The unit‐cell of proposed absorber structure consists of simple geometrical patches placed diagonally on the top surface of the…

Polarisation‐insensitive and wide‐angle multi‐layer metamaterial absorber with variable bandwidths Open

Saptarshi Ghosh, Somak Bhattacharyya, Devkinandan Chaurasiya, Kumar Vaibhav Srivastava · 2015

Three different metamaterial absorbers based on ultra‐thin multi‐layer structures, with different bandwidth characteristics, are presented. The proposed structure is composed of three vertically stacked metal‐dielectric layers backed by a …

Erratum to: Bandwidth enhancement of transformation optics-based cloak with reduced parameters Open

Archana Rajput, Kumar Vaibhav Srivastava · 2015

MULTI-BAND CYLINDRICAL DIELECTRIC RESONATOR ANTENNA USING PERMITTIVITY VARIATION IN AZIMUTH DIRECTION Open

Raghvendra Kumar Chaudhary, Kumar Vaibhav Srivastava, Animesh Biswas · 2015

A novel multi-band cylindrical dielectric resonator antenna (CDRA) using microwave laminates with permittivity variation in azimuth direction fed by coaxial probe is proposed in this paper. The proposed structures are constructed using dif…

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