A5033183526- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Metamaterials and Metasurfaces Applications
- Advanced Steganography and Watermarking Techniques
- Chaos-based Image/Signal Encryption
- Antenna Design and Optimization
- Digital Media Forensic Detection
- Photonic and Optical Devices
- Advanced Frequency and Time Standards
- Semiconductor Lasers and Optical Devices
- Advanced Image and Video Retrieval Techniques
Indian Institute of Technology Kanpur
2021-2024
Weatherford College
2022
National Aerospace Laboratories
2020
Pondicherry University
2015
For the past few decades, an explosion of interest is being shown in sharing digital data over internet. The which are transmitted such network environments often subjected to eavesdropping and malicious interventions. Steganography can be defined as practice undetectably altering a work embed secret message. People more interested sending information without arousing any suspicion, public environment. statistical undetectability property steganography enables cover image from suspected by...
Radar absorbing structures (RAS) have gained significant importance in aerospace domain with the advent of stealth technology. However, it is still a challenging task to achieve high levels power absorption over broad range frequencies minimum thickness. Advanced electromagnetic techniques like application frequency selective surfaces (FSS) are attractive options for obtaining superior characteristics at reduced FSS-based absorbers using patches as unit cell usually narrowband due resonance...
This article describes a broadband polarization-insensitive Absorption-Transmission-Absorption (A-T-A) rasorber for stealth applications. The proposed structure is two-tiered comprised of one lossy layer with lumped resistors absorption and lossless transmission. Under normal incidence, the has two bands transmission band (A-T-A), first being from 4.12 GHz to 7.85 62.32% bandwidth second 9.3 13.82 39.1% bandwidth. spans 8.08-9.04 11% fractional improved selectivity lowest IL 1.64 dB at 8.49...
Cognitive growth of computer communication lead to radical improvement in wireless technology and shrunken the world into palms user. During storing sharing, avoiding third party access data is a challenge. Image encryption popular technique widely used present scenario protect secret information. Encryption achieves this by converting original unintelligible form. This paper discusses key scheduled full scheme based on Discrete Wavelet Transform (DWT). The DWT transformed image subjected...
In this paper, a frequency selective rasorber (FSR) with two absorption bands and an in-band transmission window is being proposed. The proposed structure has two-layer geometry in which the top lossy layer consists of circular ring having T shaped arm extensions loaded lumped elements convoluted loop, whereas lossless asterisk-based slot. layers are separated by air spacer. designed unit cell periodicity <tex xmlns:mml="http://www.w3.org/1998/Math/MathML"...