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Hrishikesh S. Sonalikar

Assistant Professor

Electromagnetics, Wave Propagation, Radomes
Chamber D-115, Department of Electrical and Electronics Engineering,
BITS Pilani K K Birla Goa Campus,
NH17B Highway, Zuarinagar,
Goa 403726, India.

Research

Research Interests

1. Radomes: Radome is a short form of "Radar Dome". It is a protective cover for the antenna. The radiation emitting from the antenna passes through the radome and as a result some of the characteristics of the antenna change. Radome introduces phase delays, changes side-lobe levels of the antennas and introduces bore sight errors in seeker antennas. The radome has to be designed in such a way that it protects the antenna in the given environment and its effect on the antenna radiation remains minimum. Therefore, the design of radome is challenging, especially in the cases of airborne radomes used for antennas mounted on aircraft, satellite or a missile. We have developed the 3D ray tracing based software for analysis, design and optimization of antenna-radome systems for airborne applications.
 
2. Absorbers and Rasorbers: It is very important to protect our strategic defense systems against detection by enemy radars. Absorbers are used to absorb the incoming electromagnetic waves so that the radar cross section (RCS) of the system can be reduced and the stealth property of the system can be improved. Rasorbers are absorbers with an additional transmission band. Therefore, the rasorber can be used as a radome. Both the absorbers and rasorbers are constructed using frequency selective surfaces (FSS) present on layers of dielectric material. The design is usually accomplished using a commercial EM solvers such as CST MWS or Ansys HFSS.
 

Peer Review

I serve as a reviewer for the following journals

  • IEEE Transactions on Electromagnetic Compatibility
  • International Journal of RF and Microwave Computer-Aided Engineering