All Stories

  1. Multi-RIS-Assisted UAV-Enabled V2X Communications Under Mobility-Aware CSI Aging

    Article • Sensors, May 2026, MDPI AG

    Dr. Rajkishor Kumar

  2. Triple-Stream Ensemble Fusion for Resilient Multi-Modal Human Action Recognition: Addressing Generalization in Co-Located Sensing

    Article • March 2026, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  3. A near zero refractive indexed non-uniform metasurface for broadband RCS reduction of an antipodal Vivaldi antenna

    Article • Scientific Reports, February 2026, Springer Science + Business Media

    Dr. Rajkishor Kumar

  4. Multi Band Miniaturized 2x2 MIMO Antenna for Sub-6GHz Applications

    Article • IEEE Access, January 2026, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  5. Radio Frequency and Microwave Design for Next Generation Wireless Applications

    Article • December 2025, Taylor & Francis

    Dr. Rajkishor Kumar

  6. Dynamic multi-modal attention network for robust and real-time through-wall human activity recognition

    Article • Results in Engineering, December 2025, Elsevier

    Dr. Rajkishor Kumar

  7. Self-Diplexing SIW Rectangular Cavity-Backed Antenna Featuring TE210 and TE220 Modes with a Modified Inverted Z-Shaped Radiating Slot

    Article • Electronics, August 2025, MDPI AG

    Dr. Rajkishor Kumar

  8. Compact Decagonal Shaped UWB Antenna for Breast Cancer Detection

    Article • IETE Journal of Research, June 2025, Taylor & Francis

    Dr. Rajkishor Kumar

  9. A Review on distinct microwave metamaterial structures and their uses

    Article • Materials Science and Engineering B, March 2025, Elsevier

    Dr. Rajkishor Kumar

  10. Implementation of Phased Array Antenna based on Multilayer fed with Substrate Integrated Waveguide Technology for Beam Scanning Applications

    Article • November 2024, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  11. Implementation of Beam Steering/ Beam Scanning Based Semi-Flexible Antenna Array System Using the Modified Butler Matrix Topology

    Article • October 2024, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  12. Mini-Batch Gradient Ascent for Enhanced Indoor Localization in IoT Networks with Rayleigh Fading

    Article • October 2024, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  13. Optimizing Next-Gen Communications: Combining Passive RISs in Cross Deployment

    Article • October 2024, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  14. RF Energy Harvesting for small and IoT devices

    Article • October 2024, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  15. Graphene–metal hybrid based reconfigurable wideband terahertz antenna with improved far-field characteristics

    Article • Opto-electronics, June 2024, Springer Science + Business Media

    Dr. Rajkishor Kumar

  16. Frequency-Tunable SIW Band-Reject Filter with Increased Fundamental Mode Bandwidth for Spectrum Underlay Cognitive Radio

    Article • International Journal of RF and Microwave Computer-Aided Engineering, May 2024, Wiley

    Dr. Rajkishor Kumar

  17. A Squared Shaped Ring Loaded with Improved Radiation 2-Element Waveguide Array for Radar Applications

    Article • May 2024, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  18. Blocking triggered multi-path routing with spectrum retuning in elastic optical networks

    Article • Optical Fiber Technology, March 2024, Elsevier

    Dr. Rajkishor Kumar

  19. Design and Implementation of Novel H-Shaped Self-Diplexing SIW Rectangular Cavity-Backed Antenna with Harmonic Suppression for Terrestrial Communications

    Article • International Journal of Antennas and Propagation, February 2024, Wiley

    Dr. Rajkishor Kumar

  20. A Flexible Microstrip Antenna for Wireless Communication Applications

    Article • December 2023, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  21. Design and Analysis of a Conformal MIMO Ingestible Bolus Sensor Antenna for Wireless Capsule Endoscopy for Animal Husbandry

    Article • IEEE Sensors Journal, November 2023, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  22. CRLH‐TL‐loaded metamaterial antenna with frequency band and polarization reconfigurability

    Article • International Journal of Communication Systems, November 2023, Wiley

    Dr. Rajkishor Kumar

  23. A Frequency Tunable Dielectric Resonator Antenna with Reduction of Cross Polarisation for Wi MAX and Sub 6 GHz 5G Applications

    Article • Defence Science Journal, July 2023, Defence Scientific Information and Documentation Centre

    Dr. Rajkishor Kumar

  24. Wideband Circularly Polarized Rectangular Dielectric Resonator Antenna Using Inverted U-shaped Ground Plane for Sub 6GHz and Upper Mid-bands 5G Applications

    Article • July 2023, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  25. Optical Frequency Comb Generator Employing Two Cascaded Frequency Modulators and Mach–Zehnder Modulator

    Article • Electronics, June 2023, MDPI AG

    Dr. Rajkishor Kumar

  26. Development of wideband CPW‐fed hexagon‐shaped circularly polarized slot antenna for wireless‐communications

    Article • International Journal of Communication Systems, April 2023, Wiley

    Dr. Rajkishor Kumar

  27. A Miniaturized Dual-Band Short-Ended ZOR Antenna with Backed Ground Plane for Improved Bandwidth and Radiation Efficiency

    Article • International Journal of Antennas and Propagation, February 2023, Wiley

    Dr. Rajkishor Kumar

  28. Generation of Broadband Optical Frequency Comb by Interfering Dual Lasers in Electro-Optic Modulators

    Article • IEEE Access, January 2023, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  29. A superstrate and FSS‐loaded high gain circularly polarized twist waveguide array

    Article • Microwave and Optical Technology Letters, December 2022, Wiley

    Dr. Rajkishor Kumar

  30. CRLH-TL Based Dual-Band Miniaturized Antenna for Microwave Communication

    Article • December 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  31. A superstrate and FSS embedded dual band waveguide aperture array with improved far‐field characteristics

    Article • Microwave and Optical Technology Letters, October 2022, Wiley

    Dr. Rajkishor Kumar

  32. Dual Triangular-shaped DRA Excited with Asymmetric Slot Coupled for Wideband Circular Polarization Applications

    Article • October 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  33. Compact planar magneto‐electric dipole‐like circularly polarized antenna

    Article • IET Communications, September 2022, the Institution of Engineering and Technology (the IET)

    Dr. Rajkishor Kumar

  34. ACOUSTIC SCENE ANALYSIS AND CLASSIFICATION USING DENSENET CONVOLUTIONAL NEURAL NETWORK

    Article • May 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  35. Tribological behaviour of areca fiber reinforced with hybrid composites

    Article • Materials Today Proceedings, January 2021, Elsevier

    Dr. Rajkishor Kumar

  36. A New Bidirectional Wideband Circularly Polarized Cylindrical Dielectric Resonator Antenna using Modified J-shaped Ground Plane for WiMAX/LTE Applications

    Article • Radioengineering, June 2019, Brno University of Technology

    Dr. Rajkishor Kumar

  37. Wideband circularly polarized hybrid dielectric resonator antenna with bi‐directional radiation characteristics for various wireless applications

    Article • International Journal of RF and Microwave Computer-Aided Engineering, May 2019, Wiley

    Dr. Rajkishor Kumar

  38. A gain and bandwidth enhanced metamaterial based surface antenna for wireless communication

    Article • March 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  39. Compact asymmetric cross‐shaped rectangular dielectric resonator antenna for wideband circular polarization

    Article • Microwave and Optical Technology Letters, February 2019, Wiley

    Dr. Rajkishor Kumar

  40. Isolation and Frequency Reconfigurable Compact MIMO Antenna for WLAN Applications

    Article • IET Microwaves Antennas & Propagation, January 2019, the Institution of Engineering and Technology (the IET)

    Mr. Sreenath Reddy Thummaluru, Dr. Rajkishor Kumar, Dr Raghvendra Kumar Chaudhary

  41. Stacked rectangular dielectric resonator antenna with different volumes for wideband circular polarization coupled with step‐shaped conformal strip

    Article • International Journal of RF and Microwave Computer-Aided Engineering, January 2019, Wiley

    Dr Raghvendra Kumar Chaudhary, Dr. Rajkishor Kumar

  42. Improvements in Wi-MAX Reception: A New Dual-Mode Wideband Circularly Polarized Dielectric Resonator Antenna

    Article • IEEE Antennas and Propagation Magazine, January 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Mr. Sreenath Reddy Thummaluru, Dr. Rajkishor Kumar

  43. A new dual C‐shaped rectangular dielectric resonator based antenna for wideband circularly polarized radiation

    Article • International Journal of RF and Microwave Computer-Aided Engineering, December 2018, Wiley

    Dr. Rajkishor Kumar

  44. A dual-band dual-polarized cubical DRA coupled with new modified cross-shaped slot for ISM (2.4 GHz) and Wi-MAX (3.3-3.6 GHz) band applications

    Article • International Journal of RF and Microwave Computer-Aided Engineering, October 2018, Wiley

    Dr Raghvendra Kumar Chaudhary, Dr. Rajkishor Kumar

  45. Miniaturised triple-band antenna loaded with complementary concentric closed ring resonators with asymmetric coplanar waveguide-fed based on epsilon negative transmission line

    Article • IET Microwaves Antennas & Propagation, July 2018, the Institution of Engineering and Technology (the IET)

    Dr Raghvendra Kumar Chaudhary, Dr. Rajkishor Kumar

  46. Investigation of higher order modes excitation through F-shaped slot in rectangular dielectric resonator antenna for wideband circular polarization with broadside radiation characteristics

    Article • International Journal of RF and Microwave Computer-Aided Engineering, March 2018, Wiley

    Dr. Rajkishor Kumar

  47. A compact dual-band open-ended metamaterial antenna for microwave frequency applications

    Article • February 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  48. A microstrip feeding structure to generate wideband circular polarization in dielectric resonator antenna

    Article • February 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  49. Isolation Enhancement and Radar Cross Section Reduction of MIMO Antenna

    Article • IEEE Transactions on Antennas and Propagation, January 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Mr. Sreenath Reddy Thummaluru, Dr. Rajkishor Kumar

  50. A coaxial probe fed wideband circularly polarized antenna using unequal and adjacent-slided rectangular dielectric resonators for WLAN applications

    Article • International Journal of RF and Microwave Computer-Aided Engineering, November 2017, Wiley

    Dr Raghvendra Kumar Chaudhary, Mr. RAKESH CHOWDHURY, Dr. Rajkishor Kumar

  51. A via-less compact bandpass filter with improved selectivity using metamaterial structure

    Article • November 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Mr DILIP KUMAR CHOUDHARY, Dr. Rajkishor Kumar

  52. Compact two pole metamaterial bandpass filter using inverted IDC, meander line and rectangular stub for WiMAX application

    Article • November 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Mr DILIP KUMAR CHOUDHARY, Dr. Rajkishor Kumar

  53. A compact CPW-fed dual-band open-ended ZOR antenna based on CRLH TL for wireless applications

    Article • November 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Mr DILIP KUMAR CHOUDHARY, Dr. Rajkishor Kumar

  54. A wideband circularly polarized DRA excited with meandered-line inductor for Wi-MAX/LTE2500 applications

    Article • November 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Mr DILIP KUMAR CHOUDHARY, Dr. Rajkishor Kumar

  55. A compact triple band dual polarized metamaterial antenna loaded with double hexagonal SRR for WLAN/WiMAX applications

    Article • November 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  56. Wideband circularly polarized half-split embedded cylindrical DRA excited with slotted patch for WLAN/Wi-MAX applications

    Article • November 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  57. Circularly polarized rectangular DRA coupled through orthogonal slot excited with microstrip circular ring feeding structure for Wi-MAX applications

    Article • International Journal of RF and Microwave Computer-Aided Engineering, August 2017, Wiley

    Dr Raghvendra Kumar Chaudhary, Dr. Rajkishor Kumar

  58. A wideband circularly polarized cylindrical DRA loaded with SRR and excited with a question shaped microstrip feed line

    Article • August 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  59. A new dual-mode wideband circularly polarized rectangular dielectric resonator antenna coupled with stubs and asymmetric ground plane for WiMAX applications

    Article • International Journal of RF and Microwave Computer-Aided Engineering, July 2017, Wiley

    Dr Raghvendra Kumar Chaudhary, Mr. RAKESH CHOWDHURY, Dr. Rajkishor Kumar

  60. Wideband circularly polarized dielectric resonator antenna coupled with meandered-line inductor for ISM/WLAN applications

    Article • International Journal of RF and Microwave Computer-Aided Engineering, March 2017, Wiley

    Dr. Rajkishor Kumar

  61. A new technique to enhance the impedance bandwidth of CDRA using drilling holes

    Article • December 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  62. Wideband circularly polarized cubical DRA excited with conformal-strip for wireless applications

    Article • December 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  63. A rectangular DRA loaded with SRR and excited with question-shaped microstrip feed for application in wideband circular polarization

    Article • December 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  64. Slot coupled wideband circularly polarized cylindrical ring DRA for Wi-MAX applications

    Article • December 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  65. CPW-fed wideband CP half-split CDRA with different permittivity

    Article • International Journal of RF and Microwave Computer-Aided Engineering, November 2016, Wiley

    Dr Raghvendra Kumar Chaudhary, Dr. Rajkishor Kumar

  66. wideband circularly polarized dielectric resonator antenna

    Article • Microwave and Optical Technology Letters, July 2016, Wiley

    Dr Raghvendra Kumar Chaudhary, Dr. Rajkishor Kumar

  67. A Wideband Circularly Polarized Cubic Dielectric Resonator Antenna Excited With Modified Microstrip Feed

    Article • IEEE Antennas and Wireless Propagation Letters, January 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  68. Wideband circularly polarized H-shaped dielectric resonator antenna excited with cross-slot feed

    Article • December 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  69. A wideband circularly polarized slotted rectangular dielectric resonator antenna excited with a cross-slot

    Article • December 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  70. CPW fed Dielectric Resonator Antenna with complementary characteristics

    Article • December 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar

  71. Modified microstrip-line-fed rectangular dielectric resonator antenna coupled with slotted ground plane for wideband circular polarization

    Article • Microwave and Optical Technology Letters, November 2015, Wiley

    Dr Raghvendra Kumar Chaudhary, Dr. Rajkishor Kumar

  72. Circularly polarized ring dielectric resonator antenna excited with cross-slot

    Article • July 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Rajkishor Kumar