A Low-Profile Compact Micro Strip Circularly Polarized Antenna with Superstrate for 5G Wireless Local Area Network and X-Band Application Kiran Dasari, Swetha Ravikanti, Preeti Khanwalkar, Anitha Suresh, Neeraja Bandi, Anjaneyulu Lokam Engineering Technology and Applied Science Research, 2025 This research paper introduces a novel compact Circularly Polarized (CP) antenna tailored for 5G Wireless Local Area Network (WLAN) and X-band applications. The antenna design includes a circular patch, minimized ground, and a superstrate. Four V-shaped slits are embedded along the boundary of the circular patch, strategically positioned to generate circular polarization operating across multiple frequency bands. The antenna resonates in the ranges between 4.9 GHz and 5.6 GHz, 7.74 GHz and 8 GHz, and 10.9 GHz and 11.2 GHz. The design's effectiveness is verified through a compact antenna with dimensions of 0.636 λ0 × 0.636 λ0 × 0.21 λ0. The results demonstrate 10-dB impedance bandwidths of 13.2%, 3.16%, and 2.7% for 4.9-5.6 GHz, 7.74-8 GHz, and 10.9-11.2 GHz, respectively. In addition, the findings revealed gains of 8 dBi, 6.89 dBi, and 8 dBi at resonant frequencies of 5.3 GHz, 7.9 GHz, and 11.1 GHz, respectively. With a radiation efficiency exceeding 97% across all resonant frequencies, the addition of a superstrate enhances gain by 3 dBi. Comparison between measured and simulated results confirms the accuracy of the proposed design. The triple-band CP compact antenna, augmented by a superstrate, showcases promising characteristics for 5G WLAN and X-band applications.
Hybrid Fire Hawk With Successive Convex Approximation for Sum Rate Maximization Problem in Double IRS-Assisted Multi-User MIMO mmWave Systems Ragodaya Deepthi Kadiyala, Anjaneyulu Lokam, Chayan Bhar Transactions on Emerging Telecommunications Technologies, 2025 A promising technique for improving spectral efficiency in wireless communication is Intelligent Reflecting Surfaces (IRS). However, because of significant path loss and obstructions, a single IRS is not enough to provide adequate coverage and beamforming gain in millimeter‐wave (mmWave) networks. To overcome these limitations, this paper investigates the impact of a dual‐IRS‐assisted multi‐user MIMO mmWave system, which enables cooperative passive beamforming to enhance the effective channel gain and extend coverage in non‐line‐of‐sight (NLoS) environments. The proposed approach optimizes phase shift design at the IRSs and digital precoding at the transmitter by formulating a weighted sum rate maximization issue. To effectively solve the precoding and phase shift design problem, a hybrid metaheuristic optimization framework that combines Bernstein‐Levy Search Differential Evolution (BL‐SDE), Hybrid Aquila with Fire Hawk (HAOFH) optimization, and Double Stochastic Successive Convex Approximation (DSSCA) is generated. The hybrid Aquila optimizer specifically solves the digital precoding matrix design challenge, while the Fire Hawk optimizer solves the analog phase shift problem. Throughput maximization is a critical indicator for assessing IRS‐assisted mmWave MIMO systems, and its direct impact on network efficiency and user experience is the driving force for its adoption as the performance metric. According to simulation results, the suggested dual‐IRS system outperforms traditional single‐IRS and non‐IRS‐assisted schemes in terms of spectral efficiency, sum rate, bit error rate, and mean square error. These findings support the efficiency of the dual‐IRS framework in addressing mmWave channel defects and promoting next‐generation wireless communication.
Circularly Polarized MIMO Antenna System for Millimeter Wave 5G Applications Using Characteristic Mode Theory Sumon Modak, Umar Farooq, Anajaneyulu Lokam International Journal of Communication Systems, 2025 This study introduces a quad‐port multi‐input multi‐output antenna design specifically suited for fifth‐generation wireless technology. The antenna geometry is characterized by a flower‐shaped configuration, featuring five petals complemented by a circular slot, positioned in the ground plane to improve operational bandwidth. The effective realization of wide‐band characteristics has been studied utilizing the analysis of characteristic modes. The design antenna demonstrates simulated performance parameters that cover the millimeter‐wave frequency band from 25.6 to 32.4 GHz, delivering a maximum gain of 6.1 dBi and ensuring minimum port isolation of > 15 dB across all ports. In addition, a circular stub is purposefully positioned over the slot to facilitate circular polarization radiation behavior at 26.3 GHz, exhibiting an axial ratio bandwidth of 0.5 GHz (26–26.5 GHz). Further, the proposed antenna design is subjected to validation encompassing diversity metrics. The proposed antenna structure is successfully fabricated, and its performance is experimentally validated. A comprehensive comparative analysis is then conducted to evaluate its alignment with the simulated results.
Reinforcement Learning in Network Optimization M Sandhya, L Lakshmi, L Anjaneyulu Adaptive Artificial Intelligence: Fundamentals, Challenges, and Applications … , 2026 2026
Design and Analysis of a Wearable Double Annular Ring MIMO Antenna for 5G Applications B Alekhya, L Anjaneyulu, M Sandhya 2025 IEEE International Conference on Electrical, Electronics, Communication … , 2025 2025
Compact semi-flexible X/K/Ka band MIMO antenna for 5G IoT in healthcare applications S Mallavarapu, U Farooq, A Lokam Journal of Electromagnetic Waves and Applications 39 (17), 2080-2096 , 2025 2025
Reconfigurable Flexible Hybrid Antenna for Body Area Networks B Alekhya, A Lokam Progress in Electromagnetics Research C 158 , 2025 2025
Textile based loaded annular ring MIMO antenna system for wearable 5G applications in the Sub-6 GHz band B Alekhya, A Lokam, S Modak AEU-International Journal of Electronics and Communications 198, 155851 , 2025 2025 Citations: 7
A Low-Profile Compact Micro Strip Circularly Polarized Antenna with Superstrate for 5G Wireless Local Area Network and X-Band Application K Dasari, S Ravikanti, P Khanwalkar, A Suresh, N Bandi, A Lokam Engineering, Technology & Applied Science Research 15 (3), 23894-23900 , 2025 2025 Citations: 1
Hybrid Fire Hawk With Successive Convex Approximation for Sum Rate Maximization Problem in Double IRS‐Assisted Multi‐User MIMO mmWave Systems RD Kadiyala, A Lokam, C Bhar Transactions on Emerging Telecommunications Technologies 36 (4), e70125 , 2025 2025 Citations: 1
ADRP-DQL: An adaptive distributed routing protocol for underwater acoustic sensor networks using deep Q-learning A Lokam Ad Hoc Networks 167, 103692 , 2025 2025 Citations: 9
A joint self-information and Markovian model-driven deep channel estimation and feedback model for millimeter-wave massive MIMO systems RD Kadiyala, A Lokam, C Bhar Wireless Networks 31 (2), 1683-1703 , 2025 2025 Citations: 1
Polarimetric Decomposition Analysis of Lunar North Pole Crater Hermite-A Using Chandrayaan-2 DFSAR Data M Saritha, K Dasari, L Anjancyulu 2024 International Conference on Progressive Innovations in Intelligent … , 2024 2024 Citations: 1
Design and Development of C+ Ku Band Shared Aperture Monopulse Antenna S Muthyala, DR Jahagirdar, NM Aluwala, A Lokam 2024 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), 1-4 , 2024 2024 Citations: 1
Tolerance Analysis of W-Band Slotted Array Monopulse Antenna S Muthyala, DR Jahagirdar, H Modugumudi, NM Aluwala, A Lokam 2024 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), 1-4 , 2024 2024
Circularly polarized diversified MIMO antenna design for millimeter-wave on-body applications using characteristic mode theory S Modak, A Lokam, U Farooq International Journal of Microwave and Wireless Technologies 16 (10), 1786-1797 , 2024 2024 Citations: 9
Compact planar 28/60‐GHz wideband MIMO antenna for 5G‐enabled IoT devices U Farooq, A Lokam, S Mallavarapu International Journal of Communication Systems 37 (17), e5932 , 2024 2024 Citations: 3
Sentinel-1 SLC Data Preprocessing and Classification for Improved Polarimetric Analysis in Earth Observation Applications M Saritha, A Lokam, K Dasari International Conference on Robotics, Control, Automation and Artificial … , 2024 2024
Improved wearable, breathable, triple‐band electromagnetic bandgap‐loaded fractal antenna for wireless body area network applications M Sandhya, L Anjaneyulu ETRI Journal 46 (4), 571-580 , 2024 2024 Citations: 10
Design and Realisation of Data Acquisition System on Unmanned Platform for Underwater Application A Kumar, L Anjaneyulu EAI International Conference on Advanced Technologies in Electronics … , 2024 2024
Fast-Converging AER-DQN Framework for Optimal Beamforming and Power Control in 5G Networks A Valasa, A Lokam, C Bhar EAI International Conference on Advanced Technologies in Electronics … , 2024 2024 Citations: 1
Variable Hybrid Action Space Deep Q-Networks for Optimal Power Allocation and User Association in Heterogeneous Networks A Valasa, A Lokam, C Bhar Wireless Personal Communications 136 (1), 233-259 , 2024 2024
Characteristic mode based self isolated MIMO antenna design for millimeter wave 5G communications S Modak, A Lokam, U Farooq AEU-International Journal of Electronics and Communications 178, 155257 , 2024 2024 Citations: 30
MOST CITED SCHOLAR PUBLICATIONS
Application of C-band sentinel-1A SAR data as proxies for detecting oil spills of Chennai, East Coast of India K Dasari, L Anjaneyulu, J Nadimikeri Marine Pollution Bulletin 174, 113182 , 2022 2022 Citations: 43
Exploring the capability of compact polarimetry (hybrid pol) c band RISAT-1 data for land cover classification K Dasari, A Lokam IEEE Access 6, 57981-57993 , 2018 2018 Citations: 42
Analysis of underwater acoustic communication system using equalization technique for ISI reduction B Pranitha, L Anjaneyulu Procedia Computer Science 167, 1128-1138 , 2020 2020 Citations: 38
Review of research trends in underwater communications—A technical survey B Pranitha, L Anjaneyulu 2016 international conference on communication and signal processing (ICCSP … , 2016 2016 Citations: 36
Importance of speckle filtering in image classification of SAR data K Dasari, L Anjaneyulu, PV Jayasri, AVV Prasad 2015 International Conference on Microwave, Optical and Communication … , 2015 2015 Citations: 35
Characteristic mode based self isolated MIMO antenna design for millimeter wave 5G communications S Modak, A Lokam, U Farooq AEU-International Journal of Electronics and Communications 178, 155257 , 2024 2024 Citations: 30
Channel estimation techniques for multicarrier OFDM 5G wireless communication systems TA Kumar, L Anjaneyulu 2020 IEEE 10th international conference on system engineering and technology … , 2020 2020 Citations: 29
Area efficient pipelined architecture for realization of FIR filter using distributed arithmetic V Sudhakar, NS Murthy, L Anjaneyulu International conference on industrial and intelligent information (ICIII … , 2012 2012 Citations: 26
Identification of LPI radar signals by higher order spectra and neural network techniques L Anjaneyulu, N Sarma, NS Murthy International Journal of Information and Communication Technology 2 (1-2 … , 2009 2009 Citations: 22
A compact 26/39 GHz millimeter wave MIMO antenna design for 5G IoT applications U Farooq, A Lokam Journal of Infrared, Millimeter, and Terahertz Waves 44 (5), 333-345 , 2023 2023 Citations: 21
Novel design and characterization of wide band hook shaped aperture coupled circularly polarized antenna for 5G application R Swetha, L Anjaneyulu Progress In Electromagnetics Research C 113, 161-175 , 2021 2021 Citations: 21
A multi-band frequency and pattern reconfigurable antenna for Wi-Fi/WiMAX and WLAN applications: frequency and pattern reconfigurable antenna S Chilukuri, YP Rangaiah, A Lokam, K Dahal 2018 9th International Conference on Mechanical and Aerospace Engineering … , 2018 2018 Citations: 21
A compact reconfigurable antenna with frequency, polarization and pattern diversity C Sulakshana, L Anjaneyulu Journal of Electromagnetic waves and Applications 29 (15), 1953-1964 , 2015 2015 Citations: 17
Reconfigurable antennas with frequency, polarization, and pattern diversities for multi-radio wireless applications C Sulakshana, L Anjaneyulu International Journal of Microwave and Wireless Technologies 9 (1), 121-132 , 2017 2017 Citations: 14
Circuit modeling and analysis of wearable antennas on the effect of bending for various feeds S Mallavarapu, A Lokam Engineering, Technology & Applied Science Research 12 (1), 8180-8187 , 2022 2022 Citations: 13
Radar emitter classification using self-organising neural network models L Anjaneyulu, NS Murthy, N Sarma 2008 International Conference on Recent Advances in Microwave Theory and … , 2008 2008 Citations: 12
Performance Evaluation of a MIMO based Underwater Communication System under Fading Conditions. B Pranitha, L Anjaneyulu Engineering, Technology & Applied Science Research 9 (6) , 2019 2019 Citations: 11
Importance of Speckle filter window Size and its impact on Speckle reduction in SAR images K Dasari, L Anjaneyulu International Journal of Advances in Microwave Technology (IJAMT) 2 (2), 98-102 , 2017 2017 Citations: 11
Improved wearable, breathable, triple‐band electromagnetic bandgap‐loaded fractal antenna for wireless body area network applications M Sandhya, L Anjaneyulu ETRI Journal 46 (4), 571-580 , 2024 2024 Citations: 10
ADRP-DQL: An adaptive distributed routing protocol for underwater acoustic sensor networks using deep Q-learning A Lokam Ad Hoc Networks 167, 103692 , 2025 2025 Citations: 9
