UTKARSH DEVA

High gain, Wideband Antenna at Ka-Band for Broadband Internet via Satellites

• Antenna Element Design: Designed and fabricated compact circularly polarized complementary antenna from 25 GHz - 31 GHz.
• Miniaturization: The printed antenna was miniaturized by 45 % using a novel, in-house developed dielectric material.
• Phased array and mutual coupling reduction: Achieved 3D beam steering and grating lobe rejection by using a phased array, and further reduced mutual coupling in the array by generating a neutralizing path.

Parasitic Extraction for Resistively Matched Broadband Amplifier at X-Band

• Matching Network: Designed a matching network for two-stage amplifier operating from 6-10 GHz.
• Parasitic Extraction: Calculated first order parasitic using RF and Microwave models, and incorporated its effects to speed up the optimization.

Gain Enhancement of Photoconductive THz Antenna

• Increased the gain of PCA using dielectric cone to 25 dBi at 0.8THz with backlobe reduction by 10 dBi.

• U. Deva, A. P. Freundorfer, G. Xiao, Y. Al-Alem and Y. M. M. Antar, ”A Miniaturized Magneto-Electric Dipole Antenna for Array Applications,” 2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI), 2021, pp. 153-154, doi: 10.1109/APS/URSI47566.2021.9704062.
• U. Deva, C. Saha, J.Y. Siddiqui, ’Reflector backed high gain photoconductive THz antenna using conical GaAs horn and Si lens’, 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, San Diego, USA, 2017.
• U. Deva, C. Saha, ‘Gain Enhancement of Photoconductive THz Antenna Using Conical GaAs Horn and Si Lens’, The International Symposium on Antennas and Propagation (APSYM 2016), IEEE, 2016.