Area of Interest:

  • Meta-Materials
  • Microwave Antennas
  • Microwave Metamaterial Absorbers
  • Microwave Metamaterial Cloaking
  • Finite-Difference Time-Domain (FD-TD) Technique
  • Electromagnetics

Awards

    2025 IEEE MTT-S Graduate Student Fellowship

    Ms. Baisakhi Bandyopadhyay has received 2025 IEEE MTT-S Graduate Student Fellowship by IEEE Microwave Theory and Technology Society. The IEEE Microwave Theory and Technology Society (MTT-S) Graduate Student Fellowship Awards are sponsored by the MTT-S to encourage and support graduate students from around the world who are interested in pursuing the field of microwave engineering. The fellowship honorees receive an award of US$6,000, presented at the annual IEEE MTT-S International Microwave Symposium (IMS), to support their research activities.

Patent

    An Indian Patent with Patent Number 552260 has been granted to Prof. Srivastava group. The title of patent is “A Microwave Absorbing Metamaterial Based Wearable and A Preparation Method Thereof.” The inventors are Mr. Gaganpreet Singh, Ms. Kajal Chaudhary, Prof. Kumar Vaibhav Srivastava, Prof. Janakarajan Ramkumar and Prof. S. Anantha Ramakrishna.

    An Indian Patent with Patent Number 485957 has been granted to Prof. Srivastava group. The title of patent is “Controlled Micro-texturing of Transparent Conducting Oxide Thin Films for Uniform Transparency.” The inventors are Mr. Gaganpreet Singh, Prof. S. Anantha Ramakrishna, Prof. Janakarajan Ramkumar and Prof. Kumar Vaibhav Srivastava.

    An Indian Patent with Patent Number 445111 has been granted to Prof. Srivastava group. The title of patent is “Protective Layer for Microwave Metamaterial Absorbers and Method Thereof.” The inventors are Ms. Kajal Chaudhary, Prof. Janakarajan Ramkumar, Prof. S. Anantha Ramakrishna, Prof. Praveen C. Ramamurthy and Prof. Kumar Vaibhav Srivastava.

Journal

  1. Baisakhi Bandyopadhyay, Ranjit Kumar Dutta, Mondeep Saikia, Saptarshi Ghosh, and Kumar Vaibhav Srivastava, “Time-Modulated Transmissive Frequency-Selective Surfaces for Ultrawideband Doppler Spectral Manipulation,” IEEE Transactions on Microwave Theory and Techniques, 2026. (Accepted).
  2. Baisakhi Bandyopadhyay, Abhishek Mishra, Mondeep Saikia, and Kumar Vaibhav Srivastava, “A Multifunctional Frequency Selective Surface for Radar Countermeasures Using Time Modulation and Scattering Cancellation,” IEEE Transactions on Antennas and Propagation, 2026. (Accepted).
  3. Aakash, Sudeb Bhattacharya, Anju Kumari Rai, and Kumar Vaibhav Srivastava, “Selection of Conformal Geometry for Huygen Box and its Application to Antenna Array and Massive MIMO Antenna System,” Microwave and Optical Technology Letters, 2026. (Accepted).
  4. Rahul Vishwakarma, Amit Verma, and Kumar Vaibhav Srivastava, “Design and Development of PIN diode-based Switchable Metamaterial Absorber in S band,” IEEE Letters on Electromagnetic Compatibility Practice and Applications (L-EMCPA), (Accepted).
  5. Abhishek Mishra, Rahul Vishwakarma, Kumar Vaibhav Srivastava, Yogesh Singh Chauhan and Amit Verma, “Frequency Reconfigurable Absorber Using a Uniform Vanadium Dioxide Film-Based Substrate Thickness Modulator,” Journal of Physics D: Applied Physics, vol. 50, no. 11, pp. 115302, 2026.
  6. Baisakhi Bandyopadhyay, Rahul Vishwakarma, Mondeep Saikia, and Kumar Vaibhav Srivastava, “Polarization Insensitive Wideband Time Modulated Frequency Selective Surface: An Approach for Radar Countermeasure of Microstrip Antenna,” IEEE Transactions on Antenna and Propagation, vol. 74, no. 3, pp. 2420-2430, 2026.
  7. Baisakhi Bandyopadhyay, Rahul Vishwakarma, Saptarshi Ghosh, and Kumar Vaibhav Srivastava, “RCS Reduction of Antenna Array Using Wideband Polarization-Insensitive A-T-A Rasorber,” Microwave and Optical Technology Letters, vol. 67, no. 12, pp. e70492, 2025.
  8. Ranjit Kuamr Dutta and Kumar Vaibhav Srivastava, “Two-Dimensional Wide-Angle Beam-Switching Using Beamforming Matrix and Reconfigurable Antenna Array for Base Station Applications,” Microwave and Optical Technology Letters, vol. 67, no. 11, pp. e70481, 2025.
  9. K. P. S. Maan, Rahul Vishwakarma, and Kumar Vaibhav Srivastava, “Time Modulated Metasurface in X-Band for Radar Countermeasure,” Microwave and Optical Technology Letters, vol. 67, no. 8, pp. e70366, 2025.

Conference

  1. S. Bhattacharya, Aakash, and K. V. Srivastava, “Radiation Pattern Characterization of Reconfigurable Intelligent Surfaces,” in 2026 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Detroit, Michigan, USA, July 12-17, 2026.
  2. A. K. Rai, Aakash, C-Y-D Sim, and K. V. Srivastava, “SAR Study for a n257/n258 Band Reconfigurable Mobile Antenna,” in 2026 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Detroit, Michigan, USA, July 12-17, 2026.
  3. B. Bandyopadhyay, A. K. Rai, M. Saikia, C-Y-D Sim, and K. V. Srivastava, “Control of Spectral Characteristics in Existing Time-Modulated FSS via Duty Cycle and Biasing Frequency,” in 2026 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Detroit, Michigan, USA, July 12-17, 2026.
  4. R. K. Dutta and K. V. Srivastava, “Two-Dimensional Beamforming with 90° Hybrid Coupler and Reconfigurable Frequency Selective Surface,” in 2025 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), Kochi, India, December 14-18, 2025.
  5. R. K. Dutta and K. V. Srivastava, “Bidirectional Beamforming Antenna Using Butler Matrix and Partially Reflective Surface for High Gain Applications,” in 2025 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), Kochi, India, December 14-18, 2025.
  6. R. Vishwakarma, A. Verma, and K. V. Srivastava, “Operational Amplifier-based Negative Impedance Converter design for Non-Foster Inductor in L and S band,” in 2025 URSI Asia-Pacific Radio Science Conference URSI AP-RASC, Sydney, Australia, August,17–22, 2025.
  7. Aakash, R. Vishwakarma, S. Bhattacharya, and K. V. Srivastava, “Demonstration of Equivalent Source Approach for Modelling gNB Antennas in 5G Network,” in 2025 URSI Asia-Pacific Radio Science Conference URSI AP-RASC, Sydney, Australia, August,17–22, 2025.
  8. S. Bhattacharya, Aakash, and K. V. Srivastava, “Bistatic RCS Characteristics of High Ellipticity Metallic Cylinder,” in 2025 IEEE Space, Aerospace and Defence Conference (SPACE), Bangalore, India, July 21-23, 2025.
  9. J. Yadav, K. V. Srivastava, and J. Ramkumar, “Resistive Metamaterial based Ultrathin Broadband Microwave Absorber,” in META 2025: 15th Conference on Metamaterials, Photonic Crystals and Plasmonics, Malaga, Spain, July 22–25, 2025.
  10. B. Bandyopadhyay, A. Mishra, M. Saikia, and K. V. Srivastava, “Design and Development of Ultra-Wideband Conformal Artificial Magnetic Conductor Metasurface for RCS Reduction,” in 2025 19th European Conference on Antennas and Propagation (EuCAP), Stockholm, Sweden, March 30-April 4, 2025.
  11. R. K. Dutta, B. Bandyopadhyay, and K. V. Srivastava, “Beam Steering Antenna Using Reconfigurable Partially Reflective Surface,” in 2025 19th European Conference on Antennas and Propagation (EuCAP), Stockholm, Sweden, March 30-April 4, 2025.