His research interests include dielectric resonator and wire antennas, numerical methods in electromagnetics, modeling of microwave structures, smart antenna arrays, and meta-material guided-wave structures. He has more than 20 refereed journal publications, and more than 40 publications in national and international conferences. Dr. Eshrah is also a co-author of the Metamaterial Handbook.

Dr. Eshrah is a senior member of the Institute of the Electrical and Electronics Engineers (IEEE) and the honor society of Phi Kappa Phi. He is a three-time recipient of the Young Scientist Award presented in 2004, 2005, and 2007 at the URSI Electromagnetic Theory Symposium, Pisa, Italy, the URSI General Assembly, New Delhi, India, and the URSI Electromagnetic Theory Symposium, Ottawa, Canada, respectively. He was the recipient of the Raj Mittra junior researcher award presented in the 2005 IEEE Antennas and Propagation Society International Symposium, Washington D.C., USA, and the Best Paper Award presented in the 2005 Antenna Applications Symposium, Illinois. He was a finalist at the student paper contests held at the 2005 IEEE Antennas and Propagation Society International Symposium and the 2006 IEEE International Microwave Symposium, California, USA. In recognition of his active research work, Dr. Eshrah received the Graduate Research Award and the Dissertation Fellowship from the University of Mississippi in 2004 and 2005, respectively. Dr. Eshrah is a reviewer of the IEEE Transactions on Microwave Theory and Techniques (TMTT), the IEEE Transactions on Antennas and Propagation (TAP), the Journal of Electromagnetic Waves and Applications (JEMWA), and the Institution of Engineering and Technology (IET) Proceedings on Microwaves, Antennas, and Propagation (MAP).