Dr. Rajveer S. Yaduvanshi is working as associate professor in the department of ECE at Ambedkar Institute of Advanced Communication Technologies and Research Delhi for the last seven years. Before that he was working as senior scientific officer in Ministry of Defence, Government of India. He has a total of 31 years of experience in teaching and research. He is author of a book on MHD Antenna, Design and Applications and has published several papers in reputed journals and conferences. He has supervised 151 B.Tech projects, 11 MTech projects, and is currently supervising 7 Phd students. He holds an M. Tech degree from NIT Allahabad and a Phd from NSIT, Delhi (Delhi University). His research interests include design of MHD embedded antennas and analysis of higher modes in DRA .

Dr. Harish Parthasarathy is working as professor in the department of ECE at , Netaji Subhas Institute of Technology. He is author of more than eleven books and has guided several Phd students. He holds his Phd and B. Tech degrees from IIT Delhi. His research involves antenna and signal processing with specialization in mathematical modeling.

Rectangular DRA fundamental background.- Rectangular DRA resonant modes and sources.- Mathematical analysis of Rectangular DRA.- Mathematical analysis of transcendental equation in rectangular DRA.- Mathematical analysis of RDRA amplitude coefficients.- Mathematical analysis of radiation pattern of RDRA.- Rectangular DRA higher order modes and experimentations.- RDRA in input angular excitation mathematical model and resonant modes.- Sensitivity Analysis Rectangular DRA.- Hybrid modes in RDRA.- Inhomogeneous permittivity, permeability and conductivity solution in rectangular DRA.- Case Study 1-Structure and hardware experimentations.- Case Study 2-RDRA with manganese- manganese material as dielectric.- Case Study 3-Dual feed RDRA hardware and measurements.- Case Study 4-Isolated and Grounded RDRA.- Annexure 1-Details of Dielectric materials and their suppliers.- Annexure 2-Two dimensional mathematical model of resonant modes in cavity resonator.- Annexure 3-Design steps of RDRA using A.D.S software.- Annexure 4-Resonating Modes in Rectangular Resonators.- Annexure 5-Resonant mode generation and control in RDRA.- Annexure 6-Cartesian, cylindrical and spherical coordinate system.- References.- Index Terms.