Electrical and Electronic Engineering, Information Systems
47
Scopus Publications
464
Scholar Citations
12
Scholar h-index
14
Scholar i10-index
Scopus Publications
Design and Analysis of Interconnected H-Slot FSS P Kalaivani, Sapna B A, K. Ramasamy, A. Umesh Krishna, D. Sriramkumar, S. Sathish Kumar Proceedings of 5th International Conference on Communication Computing and Electronics Systems Iccces 2026, 2026 This paper dives into the design and analysis of an H-shaped Frequency Selective Surface (FSS) that works within the sub-6 GHz band. We've optimized the structure for 3.5 GHz to effectively manage how electromagnetic waves propagate. To assess its performance, we conducted a thorough analysis of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\varphi$</tex> and <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\theta$</tex> angles, which showed that it maintains stable resonant behavior even with varying incident angles. The square unit cell has a period of is 53.95mm with height 1.6mm fabricated on FR-4 substrate. S11 of the unit cell is −25 indicating its reflection performance making it suitable 5G application. The unit cell performance is optimal with theta variation up to 70° and phi is stable in angles from 0° to 30° and 150° to 180°.
Study of Metamaterial Unit Cell for 5G Applications Sapna B A, K Ramasamy, P Kalaivani, Kiruthika S, Durgasri K, Mahendraprasath V Proceedings of 5th International Conference on Communication Computing and Electronics Systems Iccces 2026, 2026 This paper illustrates the design and analysis of a metamaterial unit cell intended to function at 3.5 GHz for 5G communication systems. The proposed construction is meant to achieve a controllable <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\pi$</tex>-phase variation, enabling dynamic manipulation of the reflected wave direction through <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\theta$</tex> (theta) variation. The electromagnetic behavior of the metamaterial is analyzed under different <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\theta$</tex> and <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\varphi$</tex> incidence angles to evaluate its stability and tunability. Simulation results confirm stable resonance at 3.5 GHz with minimal deviation in reflection and transmission characteristics across varying incidence conditions. The proposed design demonstrates strong angular stability, compactness, and cost-effectiveness, making it suitable for implementation in wireless transmission systems. The study highlights the potential of the proposed metamaterial for efficient beam steering, enhanced gain, and improved signal coverage in sub-6 GHz 5G communication environments.
DGS enabled compact implantable antenna with minimal SAR for biomedical applications Sapna B. Abdulkareem, Ramasamy Kuppusamy Frequenz, 2025 In this article, a circular compact implantable microstrip antenna is presented for bio telemetry. The proposed slotted circular patch antenna with a split ring in ground plane is constructed on dual sided Roger 6,010 with superstrate on the radiating patch leading to a volume of 33.35 mm 3 . The antenna resonates at 2.46 GHz ISM band with | S 11 | = −31.22 dB and has a gain of −37.9 dBi. According to IEEE and FCC regulations, human safety is ensured by evaluating the radiation absorption rate in the body and is considerably below the SAR threshold of 1.6 W/kg or 2 W/kg for 1 g or 10 g of body tissues. The maximum input power level for SAR limitation is 8.5 mW for 1 g and 11.5 mW for 10 gms of tissues. Homogeneous and heterogeneous body models are used for practical analysis. Antenna performance is analyzed on various body tissues, such as the liver, heart, muscle, and head phantom and validated using pork liver, heart, minced meat and with saline water. A link budget analysis is also performed for transmission coverage of the antenna using HFSS simulation and experimentally validated with LabVIEW and NI-USRP module. The findings indicate that the antenna is appropriate for implantable application for real time environment covering up to 15 m.
An ultraminiaturized implantable antenna with low SAR for biotelemetry K. Ramasamy, B. A. Sapna Frequenz, 2025 Bio implants are popularized in health care industry for patient monitoring. This article presents an ultraminiaturized flexible slotted patch antenna with superstrate for bio implantable applications. The radiator is designed on Roger 6010 with dimension 5 × 6.2 × 0.508 mm3 which is 0.130 × 0.161 × 0.012λ g at 2.45 GHz. The superstrate ensures protection of body tissues and reduces SAR. Achieved gain and bandwidth of the antenna in free space are −27.07dBi and 30 MHz, respectively. Antenna bandwidth on body tissues like stomach, heart and liver are 124 MHz, 138 MHz and 175 MHz, respectively. SAR analysis is carried out using both homogeneous and heterogeneous human body models for 1 g and 10 g tissues during simulation. Head, heart, liver and stomach phantom shows simulated SAR value of 33.53 W/Kg, 52.49 W/Kg, 32.49 W/Kg and 31.37 W/Kg, respectively for 1 g tissue with 1 W input power and is within IEEE standard limit of 1.6 W/Kg with maximum allowable power of 47 mW, 30 mW, 48 mW and 50 mW. Performance validation of antenna is done with liver, heart and minced meat of pork for body tissues. Brain tissue is mimicked with saline solution. The link budget analysis is performed using NI-USRP 2920 module and LabVIEW with data transfer at a transmission rate of 1/2/5 Mbps and shows a wireless transmission link of 15 m for bio telemetry.
A flexible wideband wearable CPW antenna for WBAN application Sapna B. A., Ramasamy K. Frequenz, 2025 This article presents a wideband wearable antenna with flexible substrate for Body Area Network application. The designed coplanar antenna has a return loss bandwidth of 3.5 GHz ranging from 5.15 GHz to 8.65 GHz with maximum return loss at 5.8 GHz (45.9 dB) and 7.4 GHz (31.4 dB). The average gain of the antenna is 4.069 dB. The obtained specific absorption rate of the antenna is below the FCC reference limit of 1.6 W/Kg per 1 g of tissue, making it suitable for biomedical application.
An Implantable Endoscopic Antenna for Ulcer Monitoring in ISM and 5G Nadavalur Lasya, Kunapareddy Hema, Chandru A, K Ramasamy, Sapna B A 2025 International Conference on Recent Advances in Electrical Electronics Ubiquitous Communication and Computational Intelligence Raeeucci 2025, 2025 This paper present a miniaturized implantable antenna targeted toward real-time medical ulcer monitoring within the body of a living person. Using a Roger 6010 substrate, it achieves efficient performances in dual operations of 2.45 GHz as well as at 3.7 GHz working at ISM and 5G bands that go hand in hand for medical sensing and data transmission applications. Antenna with tiny size of radius 4.5mm and thickness being 0.324 mm, is very easy to implant and it works very well at the biological interface. The antenna has been designed to be highly sensitive, for which the return losses of -19 dB and -15 dB for frequencies 2.45 GHz and 3.7GHz respectively. This could be an indication of effective impedance matching and low signal reflection, which are necessary for the accurate data transmission. Even though the antenna will be exposed to the lossy biological medium, there is an achievable gain of -33.27 dB and -16.44 dB, for 2.45 GHz and 3.7 GHz resulting in sufficient level of signal energy for localized data transfer. The circular polarized antenna is compact, with high-efficiency promising to be a good solution for implantable ulcer monitoring, providing dependable performance for accurate, stable monitoring within the human body.
Stable Passive FSS Based IRS at Sub-6 Band K Ramasamy, Sapna B A, P Kalaivani, Shalini V, Abishek Ram M, Arun Pravin D Proceedings of 10th International Conference on Communication and Electronics Systems Icces 2025, 2025
A Compact Multiband Antenna for ICP Monitoring Vishnu U, Mohammed Riyaz S, Prasanna K, Sri Vishnu P, K. Ramasamy, Sapna B.A 10th International Conference on Wireless Communications Signal Processing and Networking Wispnet 2025, 2025 This article explores the development of a dual band miniaturized antenna for ICP monitoring. With the rise in requirement of instantaneous non-invasive monitoring in critical care settings solutions, the proposed antenna aims to provide reliable communication for ICP monitoring devices. The antenna is made operational at ISM bands at 1.4 GHz and 2.4 GHz using Rogers RO6010 and miniature in size (5 × 5.5 × 0.57 mm3). The dual band return losses are -19.2 dB and -14.8 dB respectively at 1.4 GHz and at 2.45 GHz. Simulation results reveal excellent return loss, high gain, and radiation patterns across the targeted frequencies. Its lightweight and biocompatible design and enhancing patient comfort while providing accurate and continuous ICP measurements. SAR analysis is performed with head phantom model to ensure safety with maximum input power of 67 mW. This antenna is a suitable choice for ICP monitoring.
Design & Analysis of FSS Based IRS for 5G P Kalaivani, K Ramasamy, Sapna B A, Senthilkumar R, Janaram S, Hariharan N Proceedings of 10th International Conference on Communication and Electronics Systems Icces 2025, 2025
Exploring FSS Enabled IRS for 5G Sapna B A, K Ramasamy, P Kalaivani, Shameel H, Sivasanjai P, Abdul Ashfaaq Sathik A Proceedings of the 9th International Conference on Electronics Communication and Aerospace Technology Iceca 2025, 2025
Optimum path selection and low end to end delay using OSDRP in CRNs International Journal of Applied Engineering Research, 2015
Security enhancement of AODV protocol for mobile adhoc network International Journal of Applied Engineering Research, 2015
Load balancing for low duty cycle wireless sensor networks using REAR protocol International Journal of Applied Engineering Research, 2015
Analysis of multicast routing protocols under high network load conditions International Journal of Applied Engineering Research, 2015
Enhance the inter cluster communication using CP-ABE for multicast security in MANET International Journal of Applied Engineering Research, 2015
Compressive sensing of K-means clustering algorithm in wireless sensor networks International Journal of Applied Engineering Research, 2015
Attacker node detection by using frequency based approach International Journal of Applied Engineering Research, 2015
Reactive routing enhancement using local path diversity in wireless sensor networks International Journal of Applied Engineering Research, 2015
Performance enhancement of maodv based multipath routing algorithm using link repair prediction technique International Journal of Applied Engineering Research, 2015
Enhancement of network life time using DTMAODV-BP based multicast routing protocol International Journal of Applied Engineering Research, 2015
Performance evaluation of the software visualization tools and a new framework to manage cognitive load in computer program learning Wseas Transactions on Information Science and Applications, 2008
Video compression for mobile communications K. Ramasamy, G. Radhamani 2002 International Conference on Communications Circuits and Systems and West Sino Exposition Icccas 2002 Proceedings, 2002
RECENT SCHOLAR PUBLICATIONS
A Low SAR ISM and 5G Dual‐Band Implantable Antenna for Endoscopy K Ramasamy, BA Sapna International Journal of Communication Systems 39 (7), e70492 , 2026 2026
Design and Simulation of a 6-Blade Circular Slot Bandpass FSS for 28 GHz BA Sapna, K Ramasamy, P Kalaivani, G Bhupanithi, DS UG 2026 8th International Conference on Devices, Circuits, and Systems (ICDCS), 1-4 , 2026 2026
Study of Metamaterial Unit Cell for 5G Applications BA Sapna, K Ramasamy, P Kalaivani, S Kiruthika, K Durgasri, ... 2026 5th International Conference on Communication, Computing and … , 2026 2026
Design and Analysis of Interconnected H-Slot FSS P Kalaivani, BA Sapna, K Ramasamy, AU Krishna, D Sriramkumar, ... 2026 5th International Conference on Communication, Computing and … , 2026 2026
Exploring FSS Enabled IRS for 5G BA Sapna, K Ramasamy, P Kalaivani, H Shameel, P Sivasanjai 2025 9th International Conference on Electronics, Communication and … , 2025 2025
Design & Analysis of FSS Based IRS for 5G P Kalaivani, K Ramasamy 2025 10th International Conference on Communication and Electronics Systems … , 2025 2025
Stable Passive FSS Based IRS at Sub-6 Band K Ramasamy, BA Sapna, P Kalaivani, V Shalini 2025 10th International Conference on Communication and Electronics Systems … , 2025 2025
An ultraminiaturized implantable antenna with low SAR for biotelemetry K Ramasamy, BA Sapna Frequenz 79 (9-10), 567-580 , 2025 2025 Citations: 2
A flexible wideband wearable CPW antenna for WBAN application S BA, R K Frequenz 79 (3-4), 127-134 , 2025 2025 Citations: 1
An Implantable Endoscopic Antenna for Ulcer Monitoring in ISM and 5G N Lasya, K Hema, K Ramasamy, S BA 2025 International Conference on Recent Advances in Electrical, Electronics … , 2025 2025
Design and analysis of a UWB antenna with reduced SAR for early detection of brain tumour BA Sapna, K Ramasamy, MG Krishnan, S Dhanyasree, S Jegadesh Antennas for Industrial and Medical Applications with Optimization … , 2024 2024 Citations: 1
Design and analysis of a UWB BA Sapna, K Ramasamy, MG Krishnan Antennas for Industrial and Medical Applications with Optimization … , 2024 2024
A Compact Conformal Antenna for Capsule Endoscopy K Ramasamy, BA Sapna, P Yogesh, A Boopathi Raja, T Sudharson 2024 Asia Pacific Conference on Innovation in Technology (APCIT), 1-4 , 2024 2024
A Miniaturized Implantable Antenna for Health Care Monitoring BA Sapna, K Ramasamy, T Arul Dev 2024 Asia Pacific Conference on Innovation in Technology (APCIT), 1-4 , 2024 2024
Performance analysis of a flexible wearable antenna with low SAR for biomedical application RM Kuppusamy, SB Abdulkareem Frequenz 77 (11-12), 549-556 , 2023 2023 Citations: 3
A novel wearable monopole antenna with controlled SAR using metamaterial K Ramasamy, BA Sapna, M Jayasheela International Journal of Microwave and Wireless Technologies 15 (9), 1524-1536 , 2023 2023 Citations: 8
Faulty node detection and recovery scheme for large‐scale wireless sensor network using hosted cuckoo optimization algorithm R Palanikumar, K Ramasamy, P Srinivasa Ragavan International journal of communication systems 35 (9), e5143 , 2022 2022 Citations: 20
Effect of SC Parameters on Material Characteristics for Al 5083‐Based Hybrid Matrix Composites Using Taguchi RSM Technique AU Rao, K Ramasamy, A Pradeep, PSS Kumar, S Karumuri, B Gugulothu Journal of Nanomaterials 2022 (1), 7654128 , 2022 2022 Citations: 2
Research Article Effect of SC Parameters on Material Characteristics for Al 5083-Based Hybrid Matrix Composites Using Taguchi RSM Technique AU Rao, K Ramasamy, A Pradeep, PSS Kumar, S Karumuri, B Gugulothu 2022
HUMAN BIOMETRIC AUTHENTICATION USING DENTAL FEATURES K RAMASAMY, M JAYASHEELA, E GOMATHI, E UDAYAKUMAR INDIAN JOURNAL OF FORENSIC MEDICINE AND PATHOLOGY 14 (3), 339-346 , 2021 2021
MOST CITED SCHOLAR PUBLICATIONS
Wireless Power Transmission œ A Next Generation Power Transmission System SS Mohammed, K Ramasamy, T Shanmuganantham International journal of computer applications 975, 8887 , 2010 2010 Citations: 156
Optimized routing in wireless sensor networks by establishing dynamic topologies based on genetic algorithm PS Ragavan, K Ramasamy Cluster Computing 22 (Suppl 5), 12119-12125 , 2019 2019 Citations: 29
Effective failure nodes detection using matrix calculus algorithm in wireless sensor networks R Palanikumar, K Ramasamy Cluster Computing 22 (Suppl 5), 12127-12136 , 2019 2019 Citations: 22
Software defined networking approach based efficient routing in multihop and relay surveillance using Lion Optimization algorithm PS Ragavan, K Ramasamy Computer Communications 150, 764-770 , 2020 2020 Citations: 21
Faulty node detection and recovery scheme for large‐scale wireless sensor network using hosted cuckoo optimization algorithm R Palanikumar, K Ramasamy, P Srinivasa Ragavan International journal of communication systems 35 (9), e5143 , 2022 2022 Citations: 20
Software defined network based self-diagnosing faulty node detection scheme for surveillance applications R Palanikumar, K Ramasamy Computer Communications 152, 333-337 , 2020 2020 Citations: 18
Optimization of multicast ad hoc on-demand routing protocol based on genetic algorithm with backup paths in MANET SJG Rajadurai, J Veerappan, K Ramasamy Wireless Personal Communications 94 (4), 2095-2124 , 2017 2017 Citations: 18
Fatal haemorrhagic pulmonary oedema and associated angioedema after the ingestion of rofecoxib NP Kumar, G Wild, KA Ramasamy, J Snape Postgraduate medical journal 78 (921), 439-440 , 2002 2002 Citations: 18
Security issues in WAP WTLS protocol G Radhamani, K Ramasamy IEEE 2002 International Conference on Communications, Circuits and Systems … , 2002 2002 Citations: 18
A new class of asymmetric turbo code for 3G systems K Ramasamy, MU Siddiqi AEU-International Journal of Electronics and Communications 60 (6), 447-458 , 2006 2006 Citations: 15
A 2.45 GHz Sierpinski Carpet edge-fed microstrip patch fractal antenna for WPT rectenna SS Mohammed, T Shanmuganantham, C Renald, K Ramasamy 2010 INTERNATIONAL CONFERENCE ON COMMUNICATION CONTROL AND COMPUTING … , 2010 2010 Citations: 13
Routing algorithms: Shortest path, widest path, and spanning tree D Medhi, K Ramasamy, D Medhi, K Ramasamy Network Routing, Algorithms, Protocols, and Architectures. A volume in The … , 2018 2018 Citations: 12
A sierpinski fractal based microstrip patch antenna for wireless power transmission system SS Mohammed, K Ramasamy, T Shanmuganantham International Journal of Computer Applications 1 (13), 0975-8887 , 2010 2010 Citations: 11
Optimal power allocation for the proposed asymmetric turbo code for 3G systems K Ramasamy, B Balamuralithara, MU Siddiqi AEU-International Journal of Electronics and Communications 63 (7), 551-561 , 2009 2009 Citations: 10
Solar PowerGeneration using SPS and Wireless Power Transmission SS Mohammed, K Ramasamy Proc. Int. Conf. Energy Environ, 413-418 , 2009 2009 Citations: 9
A novel wearable monopole antenna with controlled SAR using metamaterial K Ramasamy, BA Sapna, M Jayasheela International Journal of Microwave and Wireless Technologies 15 (9), 1524-1536 , 2023 2023 Citations: 8
Virtual laboratory education for persons with vision disabilities JM Chung, K Ramasamy, V Kotikalapudi, Z Mulla, G Thiyagarajan, ... The 2002 45th Midwest Symposium on Circuits and Systems, 2002. MWSCAS-2002 … , 2002 2002 Citations: 8
Ber Performance Comparison Of Multiple Antenna Using Space Time Block Coded Ofdm System In Multipath Fading Environment RS Babu, M Suganthi, K Ramasamy ICTACT Journal on Communication Technology 2 (01), 0 , 2011 2011 Citations: 7
Performance of JPEG image transmission using proposed asymmetric turbo code K Ramasamy, MU Siddiqi, MY Alias EURASIP Journal on Advances in Signal Processing 2007 (1), 075757 , 2006 2006 Citations: 7
Weight distribution analysis of proposed asymmetric turbo code for improved performance K Ramasamy, MU Siddiqi AEU-International Journal of Electronics and Communications 60 (7), 479-493 , 2006 2006 Citations: 6
GRANT DETAILS
All India Council for Technical Education- Research Promotion Scheme. File .