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Academic Experts
Dr. Nidhi Tewari

Biography

of Electronics and Communication Engineering at Jaypee Institute of Information Technology, Noida, India. She has an industrial experience of approximately 5 years working in Aditya Birla Ultratech Vikram Cement Works as “Electronics Automation Engineer

She has successfully completed her PhD degree from Jaypee Institute of Information Technology, Noida (2021-2024) within three years. She has received her M.Tech degree (Honours, Gold medal) in Communication Engineering Department from Galgotias University, Greater Noida, India in the year 2018 and B.Tech. degree (Honours, Gold medal) in the Department of Applied Electronics and Instrumentation Engineering from Rajasthan Technical University, Kota, in the year 2010. She has published papers in International Journals SCI, Scopus and has presented several papers in IEEE conferences.

Research Highlights

The research is focussed to design and analyze various antennas using substrate integrated waveguide technology, known for high performance planar waveguide for high frequency applications. The research covers the basic aspects for designing a H-plane Horn and cavity backed SIW antennas. The H-plane horn antennas provides a high gain dual band (24.99 GHz and 26.1 GHz) antenna where leaky wave slots are used to achieve pattern reconfigurability at resonant frequency band (i.e. broadside to end fire radiation pattern at 26.1 GHz and broadside radiation pattern at 24.9 GHz). A multiband (quad band), MIMO and MIMO array SIW cavity backed antennas is designed at K and Ka band frequencies. In addition to this circularly polarized cavity backed SIW antennas are designed for millimtere wave frequencies i.e. 25 GHz and 26 GHz. In all these antenna designs a high gain was achieved due to SIW technology. The proposed prototypes were designed using HFSS software, fabricated using PHCNC machine and measured using Vector Network Analyzer (VNA) and anechoic chamber upto 30 GHz.

Areas of Interest
  • Substrate Integrated Waveguide (SIW) Technology
  • Microstrip Technology
  • Antenna
  • Filter
  • and Microwave Component Design (X
  • Ku
  • K Bands)
  • Slot/Leaky wave/CP/Metamaterial/cavity backed/reconfigurable/Millimeter wave Antennas
  • MIMO and MIMO array SIW antennas
Publications
  • N. Tewari, A. Bansal, S. Srivastava and W. Whittow, "A Novel High-Gain Hexagonal Cavity-Backed MIMO SIW Antenna With 3-D Homogeneous Lens Loading at Ka Band," in IEEE Antennas and Wireless Propagation Letters, vol. 24, no. 9, pp. 2889-2893, Sept. 2025, doi: 10.1109/LAWP.2025.3576566.
  • Suryansh Saxena, Nidhi Tewari, Shweta Srivastava, “A Spiral Cavity Backed 4 x 4 MIMO SIW Antenna for Radio Telescopic applications at Ku Band, communicated paper in IEEE Journal on Miniaturization for Air and Space Systems on 14 July 2024.
  • Nidhi Tewari, Neetu Joshi, Shweta Srivastava, “A Miniaturized Aperture Coupled MIMO Array SIW Antenna at K band”, Microw Opt Technol Lett. 2023. DOI: 10.1002/mop.33952.
  • Nidhi Tewari, Neetu Joshi, Shweta Srivastava, " A Novel Reconfigurable H-Plane Horn Leaky wave Substrate Integrated Waveguide MIMO Antenna for K Band", AEU - International Journal of Electronics and Communications, 170(5):154832, July 2023. DOI:10.1016/j.aeue.2023.154832
  • Tewari N , Joshi N , Srivastava S, “A compact quad‐band circular cavity backed substrate integrated waveguide antenna for millimetre wave applications”, Microw Opt Technol Lett. 2023;0–0. DOI:10.1002/mop.33766