Indian Institute of Technology Kharagpur |

     My research contributions are primarily in the field of full-wave analysis and design of efficient antennas and guided systems, miniaturized antennas, numerical techniques and metamaterials. We had shown that it is possible to realize a high radiated power gain from an electrically small antenna and an electrically small antenna array using a metamaterial shell of reasonable thickness, which was earlier reported to be one of the primary design constraints for practical realization. We have also designed and fabricated novel electrically small antennas with Q-factor very near the Chu-limit, together with highly miniaturized planar antenna configurations. In addition, we have successfully designed an efficient metamaterial based superstrate for the significant performance enhancement of an electrically small antenna. We have also investigated new hybrid mode characteristics in a metamaterial loaded circular waveguide with a rigorous analysis of both isotropic and anisotropic metamaterial cases.
     In addition, we had been also engaged in the research on the acceleration of the full-wave Green’s function based technique for the analysis of the dielectric resonator antenna (DRA), resulting in a very significant improvement in the computational speed by a factor of 100 compared to that in the literature. Our research group has also for the first time characterized the modes of the multilayer DRA with arbitrary number of layers. We had also actively contributed in the efficient and full-wave analysis and design of the planar and non-planar feeds to the multilayer DRA, together with multiband/broadband DRA topologies.
     We had also developed the full-wave analysis and design of a system of conformal loop antennas around a conducting cone considering mutual coupling. The impedance match and cross-pol characteristics were significantly improved due to the presence of the cone. A three-loop director-reflector structure based on the above configuration was also investigated.

All Publications

TLM-based modal-extraction approach for the investigation of discontinuities in the rectangular waveguide and the NRD B. Ghosh, N.R.S. Simons, L. Shafai, A. Ittipiboon and A. Petosa By IEEE Transactions on Microwave Theory and Techniques 50 2294-2304 (2002)
Mode excitation in the microstrip slot-coupled three-layer hemispherical dielectric resonator antenna Ghosh B., Kakade A. B. By IET Microwaves, Antennas Propag. 10 1534-1540 (2016)
Investigation of gain enhancement of electrically small antennas using double-negative, single-negative and double-positive materials B. Ghosh, S. Ghosh and A.B. Kakade By Physical Review E 78 - (2008)
Coplanar waveguide feed to the hemispherical DRA B. Ghosh, K. Ghosh and C.S. Panda By IEEE Transactions on Antennas and Propagation 57 1566-1570 (2009)
A loop loading technique for the miniaturization of non-planar and planar antennas B. Ghosh, S.K. Moinul Haque, D. Mitra, and S. Ghosh By IEEE Transactions on Antennas and Propagation 58 2116-2121 (2010)
Miniaturization of slot antennas using slit and strip loading B. Ghosh, S.K. Moinul Haque and D. Mitra By IEEE Transactions on Antennas and Propagation 59 3922-3927 (2011)
Mode excitation in the coaxial probe coupled three-layer hemispherical dielectric resonator antenna A.B. Kakade and B. Ghosh By IEEE Transactions on Antennas and Propagation 59 4463-4469 (2011)
Analysis of arbitrary multiple-loop antennas around a conducting cone, with rotational symmetry B. Ghosh, S.K. Moinul Haque and P. Halder By IET Microwaves, Antennas and Propagation 7 111-122 (2013)
Miniaturization of slot antennas using wire loading B. Ghosh, S.K. Moinul Haque and N.R. Yenduri By IEEE Antennas and Wireless Propagation Letters 12 488-491 (2013)
A miniaturized ring slot antenna design with enhanced radiation characteristics D. Mitra, B. Ghosh, A. Sarkhel and S.R. Bhadra Chaudhuri By IEEE Transactions on Antennas and Propagation 64 300-305 (2016)