GTEM Cell-Based Immunity and Emission Test for Multi-Frequency Applications Hetal M Pathak, Maharshi M Pathak, Shweta N Shah Ssrg International Journal of Electrical and Electronics Engineering, 2025 In the modern communication world, all are connected with other members of the world through communication devices. The Gigahertz Transverse Electromagnetic (GTEM) cell is a versatile equipment for the measurement of conducting Electromagnetic Compatibility (EMC) with both emission and immunity testing in a free field environment. This paper mostly presents an analysis of GTEM-based testing for multi-frequency applications. The achieved results emphasized the GTEM cell performance to simulate electromagnetic conditions for various electronic devices. All these Electromagnetic emission devices are tested for compatibility prior to trade on the market. In this paper, the immunity and emission tests of different helical antennas and a wideband antenna at various frequencies are tested using a fabricated optimized GTEM cell. The fabricated optimized GTEM cell is validated for multi-frequency immunity, emission test using several helical microstrip and octagonal antennas. The developed antennas at various frequencies, 490 MHz, 800 MHz, and 2.4 GHz, are tested to validate the optimized GTEM cell.
Review of Beamspace Channel Estimation Techniques: Technical Comparison Across Various Methods Smita G. Daware, Pinalkumar J. Engineer, Shweta N. Shah IETE Journal of Research, 2025 Beamspace channel estimation is a crucial part of modern wireless communication systems because it minimises the impact of channel losses and allows for the effective use of spectrum resources. This review paper presents a thorough examination and comparison of beamspace channel estimation techniques. These algorithms include subspace-based techniques, machine-learning techniques, compressive sensing techniques, semi-blind techniques, and conventional techniques. Each category of algorithms is assessed and contrasted based on several criteria. Least square (LS), minimum mean square error (MMSE), and linear minimum mean square (LMMSE) algorithms are examples of traditional techniques. Space alternating generalised expectation maximisation (SAGE) is a component of the semi-blind approach. The sparsity of signals is used by compressive sensing algorithms that employ statistical properties for estimation, such as Compressive Sampling Matching Pursuit (CoSaMP), sparse Bayesian learning (SBL), and orthogonal matching pursuit (OMP), to efficiently recover information from undersampled measurements. In addition, the article aims to explore the emerging field of machine-learning-based approaches to path computation, including convolutional neural network (CNN), recurrent neural network (RNN), deep neural network (DNN), approximate message passing (AMP), and orthogonal approximate message passing (OAMP). Additionally, subspace-based Multiple Signal Classification (MUSIC) and Estimation of Signal Parameters via Rotational Invariance Techniques (ESPRIT) are also evaluated.
Designing of SDR based malicious act: IRNSS jammer Priyanka L. Lineswala, Shweta N. Shah Lecture Notes of the Institute for Computer Sciences Social Informatics and Telecommunications Engineering Lnicst, 2018
FFT averaging ratio algorithm for IRNSS Sreejith Raveendran, Mehul V. Desai, Shweta N. Shah Lecture Notes of the Institute for Computer Sciences Social Informatics and Telecommunications Engineering Lnicst, 2018
MAC and network layer issues and challenges for IoT Dario Bonino, Maria Teresa Outeiro, Claudio Pastrone, Maurizio A. Spirito, Alexandre Alapetite, et al. Internet of Things Foundation for Smart Cities Ehealth and Ubiquitous Computing, 2017
A case study: obstructed and unobstructed signal classifier for GPS and NavIC using machine learning targeted to low latitude region D Jagiwala, S Shah Survey Review 58 (408), 268-278 , 2026 2026
Spoofing Detection in NavIC: Behavioral Analysis of Key Observables and Insights from GEO/GSO Stability S Tanna, S Shah MAPAN, 1-14 , 2026 2026
Review of Beamspace Channel Estimation Techniques: Technical Comparison Across Various Methods SG Daware, PJ Engineer, SN Shah IETE Journal of Research, 1-12 , 2025 2025
Preemptive Measure of Spoofing on NavIC Signal S Tanna, S Shah MAPAN 40 (2), 533-545 , 2025 2025 Citations: 1
Walkthrough Analysis of Spoofing in Navigation System S Tanna, S Shah International Conference on Smart Mobility Systems, 217-232 , 2025 2025
Development of a novel microwave planar sensor for the fruit quality detection using free space transmission method KS Shinde, SN Shah, PN Patel Analog Integrated Circuits and Signal Processing 122 (2), 12 , 2025 2025 Citations: 1
Analysis of NavIC Positioning During Tropical Cyclone Ockhi V Patel, S Shah International Conference on Systems, Control and Automation, 285-300 , 2025 2025
An Effective Wireless Communication Architecture Using Ultra Lightweight Automatic Modulation Classification Model Over Cortex M4 Based Edge Device D Desai, R Gupta, S Shah 2024 4th International Conference on Electrical, Computer, Communications … , 2024 2024
Numerical design and experimental characterization of reconfigurable leaky wave plasma antenna RR Hirani, A Sinha, AK Pandey, SK Pathak, SN Shah IEEE Access 12, 152347-152357 , 2024 2024 Citations: 3
Development and Performance Evaluation of Novel Microwave Planar Sensors for the Precise Quality Assessment of Apples and Bananas PNP Kalindi S. Shinde , Shweta N. Shah Journal of Sensor Research and Technologies 6 (3), 1-28 , 2024 2024
Design and simulation of planar microwave sensor for food industry: KS Shinde et al. KS Shinde, SN Shah, PN Patel Journal of the Korean Physical Society 85 (1), 35-46 , 2024 2024 Citations: 5
Spectral efficiency of hybrid precoding and combining design for mm-Wave multi-user massive MIMO systems K Umaria, S Shah Analog Integrated Circuits and Signal Processing 119 (3), 431-439 , 2024 2024 Citations: 3
A review on beamspace channel estimation algorithms in wireless communication SG Daware, P Engineer, SN Shah 2023 IEEE 7th Conference on Information and Communication Technology (CICT), 1-5 , 2023 2023 Citations: 5
Implementation and analysis of grid-based ionospheric correction technique and positioning errors of NavIC+ GPS ARAMIS SDR receiver MV Desai, D Jagiwala, SN Shah IETE Technical Review 40 (5), 663-670 , 2023 2023 Citations: 6
Dual iterative algorithm for hybrid beamforming in mmWave downlink massive multi-user MIMO systems K Umaria, S Shah Analog Integrated Circuits and Signal Processing 115 (1), 111-123 , 2023 2023 Citations: 3
Novel test set up for GTEM cell characterization HM Pathak, SN Shah IETE Journal of Research 69 (1), 242-248 , 2023 2023 Citations: 1
Possibilities of AI algorithm execution in GNSS D Jagiwala, SN Shah 2022 URSI Regional Conference on Radio Science (USRI-RCRS), 1-4 , 2022 2022 Citations: 9
Geofencing application using IRNSS/NavIc SN Shah, A Shukla, R Prasad, P Mandalia 2022 2nd International Conference on Intelligent Technologies (CONIT), 1-6 , 2022 2022 Citations: 5
Design of LinkIt ONE-Based IoT System with Middleware Architecture for Healthcare Monitoring K Kumari, S Pandey, P Kethele, S Patel, S Shah, U Dalal IoT Applications for Healthcare Systems, 51-75 , 2022 2022 Citations: 2
Possibilities of AI Algorithm Execution in GNSS, URSI–RCRS 2022 D Jagiwala, SN Shah 2022 URSI Regional Conference on Radio Science (USRI-RCRS), IIT (Indore), India , 2022 2022 Citations: 2
MOST CITED SCHOLAR PUBLICATIONS
The GIVE ionospheric delay correction approach to improve positional accuracy of NavIC/IRNSS single-frequency receiver. MV Desa, SN Shah Current Science (00113891) 114 (8) , 2018 2018 Citations: 34
Impact of dilution of precision for position computation in Indian regional navigation satellite system MV Desai, D Jagiwala, SN Shah 2016 International Conference on Advances in Computing, Communications and … , 2016 2016 Citations: 26
Estimation of ionospheric delay of NavIC/IRNSS signals using the Taylor Series Expansion MV Desai, SN Shah Journal of Space Weather and Space Climate 9, A23 , 2019 2019 Citations: 22
An observational review on influence of intense geomagnetic storm on positional accuracy of NavIC/IRNSS system MV Desai, SN Shah IETE Technical Review 37 (3), 281-295 , 2020 2020 Citations: 21
Dispersion characteristics of dielectric tube waveguide loaded with plasma for leaky wave antenna application RR Hirani, SK Pathak, SN Shah, DK Sharma AEU-International Journal of Electronics and Communications 83, 123-130 , 2018 2018 Citations: 20
Impacts of intense geomagnetic storms on NavIC/IRNSS system MV Desai, SN Shah Annals of Geophysics 61 (5), GM557-GM557 , 2018 2018 Citations: 18
Case study: performance observation of NavIC ionodelay and positioning accuracy MV Desai, SN Shah IETE Technical Review 38 (2), 256-266 , 2021 2021 Citations: 17
Impact of Wi-Fi interference on NavIC signal DD Jagiwala, SN Shah Curr Sci 114 (11), 2273-2280 , 2018 2018 Citations: 16
Performance analysis of different interference detection techniques for navigation with Indian constellation PL Lineswala, SN Shah IET Radar, Sonar & Navigation 13 (8), 1207-1213 , 2019 2019 Citations: 13
Full-wave analysis and computation of radiation characteristics for reconfigurable plasma antennas RR Hirani, SK Pathak, SN Shah IEEE Transactions on Antennas and Propagation 67 (8), 5185-5193 , 2019 2019 Citations: 11
Hypothesis test-based detection of Wi-Fi interference on NavIC/IRNSS S-band signal PL Lineswala, DD Jagiwala, SN Shah The Journal of Navigation 72 (4), 931-947 , 2019 2019 Citations: 10
Possibilities of AI algorithm execution in GNSS D Jagiwala, SN Shah 2022 URSI Regional Conference on Radio Science (USRI-RCRS), 1-4 , 2022 2022 Citations: 9
Different categorization for jammer: The enemy of satellite navigation PL Lineswala, SN Shah, R Shah 2017 2nd International Conference for Convergence in Technology (I2CT), 282-287 , 2017 2017 Citations: 8
Study of L5 band interferences on IRNSS S Ruparelia, P Lineswala, D Jagiwala, MV Desai, SN Shah, UD Dalal Proceedings of the International Conference on Global Navigation Satellite … , 2015 2015 Citations: 8
Machine learning-based real-time traffic control system S Jain, A Singh, SN Shah, R Lalam, D Saxena 2021 IEEE Mysore Sub section international conference (MysuruCon), 92-97 , 2021 2021 Citations: 7
Analysis of ionospheric correction approach for IRNSS/NavIC system based on IoT platform MV Desai, SN Shah International Conference on Future Internet Technologies and Trends, 174-183 , 2017 2017 Citations: 7
Big data approach in healthcare used for intelligent design—software as a service WD Yu, JS Gill, M Dalal, P Jha, S Shah 2016 IEEE International Conference on Big Data (Big Data), 433 , 2016 2016 Citations: 7
Ionodelay models for satellite based navigation system MV Desai, SN Shah Afr J Comput ICT 8 (2), 25-32 , 2015 2015 Citations: 7
Characteristic analysis of hierarchical and non-hierarchical modulation for dvb-h S Shah, UD Dalal International Journal of Computer Applications 59 (1), 20-23 , 2012 2012 Citations: 7
Implementation and analysis of grid-based ionospheric correction technique and positioning errors of NavIC+ GPS ARAMIS SDR receiver MV Desai, D Jagiwala, SN Shah IETE Technical Review 40 (5), 663-670 , 2023 2023 Citations: 6