A5019494698- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Microwave Engineering and Waveguides
- Antenna Design and Optimization
- Electromagnetic Compatibility and Measurements
- Energy Harvesting in Wireless Networks
- Wireless Body Area Networks
- Satellite Communication Systems
- Full-Duplex Wireless Communications
- Combustion and Detonation Processes
- Vibration and Dynamic Analysis
- Material Science and Thermodynamics
- Seismic Imaging and Inversion Techniques
- Structural Analysis and Optimization
- Lightning and Electromagnetic Phenomena
- Advanced Fiber Optic Sensors
- Telecommunications and Broadcasting Technologies
- Advanced Data Compression Techniques
- Metal and Thin Film Mechanics
- Air Quality Monitoring and Forecasting
- Icing and De-icing Technologies
- Radio Frequency Integrated Circuit Design
- Brake Systems and Friction Analysis
- Music and Audio Processing
- Electromagnetic Scattering and Analysis
National Institute of Technology Rourkela
2023-2025
Cellworks Research (India)
2021-2022
Indian Institute of Technology Kharagpur
2018-2021
Indian Institute of Engineering Science and Technology, Shibpur
2013
SC Solutions (United States)
2004
An approach of reducing Mutual Coupling between two patch antennas is proposed in this paper. Here, a meander line resonator placed the radiating elements. By inserting with edge-to-edge distance less than λ/18, about 8 dB reduction throughout 10-dB bandwidth has been achieved without degrading radiation pattern. The circuit model configuration carried out envelope correlation coefficient investigation done and results are presented. structure fabricated measured.
The theory of characteristic modes is a popular physics-based deterministic approach, which has found several recent applications in the fields radiator design, electromagnetic interference modeling, and radiated emission analysis. To apply mode analysis given structure, proper selection significant an essential requirement for correct conclusion resultant field. This paper reviews development conventional modal significance measure together with other related criteria that have been...
A theory of coupled characteristic modes is developed for computing the eigenmodes a array using isolated elements and corresponding mutual interaction matrix. The systematic blending matrix block partitioning method orthogonal properties eigenvectors provide generalized formulation considering all modes. Later, closed-form solutions have been derived dominant with assumption one-to-one mode coupling elements. idea has further extended two-to-two modeling which conforms into fourth-order...
This work explores the impacts of slot loading in a microstrip patch antenna from modal viewpoint. Slots are found to be effective reducing nearest higher order modes. Closed-form expressions have been reported account for change impedance properties. Further scopes present highlighted physical perspective.
The effects of parametric variation a rectangular slot on square microstrip patch antenna (MSPA) have been analyzed from physical perspective, along with an equivalent circuit model.
Mutual coupling between neighboring antennas is a major concern in the array design. Using concept of characteristic modes, this work proposes theoretical framework for analysis such electromagnetic interaction and its control mechanism. The root interelement lies mutually induced current elements. Henceforth, initial part concentrates on computing coupled by modeling uncoupled modes. Closed-form formulations have been derived quantifying impacts. proposed further verified with numerical...
This article provided a detailed analysis of the mutual coupling phenomena in microstrip patch array and introduced novel compact magnetoelectric structure as planar decoupling element. The proposed structure, termed interconnected semicircularly slotted was formed combination electric dipole, magnetic dipoles, circular patches. improves isolation between two patches by around 9 dB at resonating frequency radiating antennas with edge-to-edge spacing only 0.057 <inline-formula...
A novel and compact decoupling structure has been introduced in this work to improve the mutual coupling of a two element microstrip antenna array. systematic blending electric magnetic dipoles lead construction isolating whose working principle explained using theory characteristic modes.
Perturbation of the geometry through a narrow slot has been studied for an elliptical microstrip patch antenna. The loading effects have from modal perspective. is found to suppress nearest orthogonal mode. As consequence, cross-polarized radiation also reduced. Thus analysis can provide systematic guideline enhancing polarization purity desired
This work introduces a novel decoupling technique which employs the theory of coupled characteristic modes for two element microstrip array. The key idea is to optimize shape structure using eigenvalues array can be computed with no prior knowledge excitation arrangement. A template example parasitic isolating strip has been verified full-wave simulation. proposed method find future application in multi-antenna system any desired frequency interest.
This work introduces a theoretical extension of the characteristic mode formulation for analyzing vertical electric dipole lying above lossy dielectric half-space. As conventional fails to maintain orthogonality field modes over infinite sphere, an alternate modal is proposed here both current and modes. The results are found match closely with its method moment counterparts. Later, isolated no ground plane have been used predict role through theory linear combination eigenvectors....
This manuscript aims to provide a deeper insight into recently proposed technique, i.e., the theory of coupled characteristic mode (TCCM). TCCM is lower-order matrix decomposition technique that provides physical understanding gradual evolution isolated modes towards in array. The present work initially discusses benefits analysis antenna design and identifies computational challenges extend it large arrays. Next, advantages for such applications. It explores different normalization...
Radio frequency (RF) diode sputtering is widely used for depositing giant magneto-resistive (GMR) thin films multilayers, spin valves, and spin-dependent tunneling (SDT) devices in data storage, computer memory, etc. However, the thus produced often show unacceptably high variation GMR properties from wafer to wafer. This paper describes a modeling control effort that was undertaken improving run-to-run repeatability. A multiscale input-output model developed primary physical phenomena...
Efficient compression is pertinent for the convenient storage, transmission, and processing of modern high-resolution hyperspectral images (HSI). We propose a high-performance HSI method using library-based spectral unmixing tensor decomposition. Unlike existing approaches, our proposed work incorporates in framework achieves significantly higher performance with negligible loss. The includes an index accurate endmember number estimation, followed by exact library pruning sparsity...
An alternate analytic technique is proposed here for the leaky wave transmission due to a horizontal electric dipole (HED) source embedded in conductor-backed planar multi-layered configuration. If there change number of layers, formulation avoids rigorous re-computation analysis using conventional asymptotic/ line approximation by simpler transcendental relation compute poles with updated generalized reflection coefficient. Once are determined, corresponding directivity and radiation...
This study presents an innovative approach to creating a dynamic, AI based emission inventory system for use with the Weather Research and Forecasting model coupled Chemistry (WRF Chem), designed simulate vehicular other anthropogenic emissions at satellite detectable resolution. The methodology leverages state of art deep learning computer vision models, primarily employing YOLO (You Only Look Once) architectures (v8 v10) T Rex, high precision object detection. Through extensive data...