Rajesh K. Mongia was born in New Delhi. India. in 1960. He obtained his BSc degree in Electrical Engineering from Delhi College of Engineering, University of Delhi, in 1981, and the PhD degree in Electrical Engineering from the Indian Institute of Technology (IIT), Delhi, India, in 1989. From 1981 to 1989, he worked in the Microwave Group of the Centre for Applied Research in Electronics (CARE) at IIT, Delhi. During his stay at CARE. he worked on various projects in the area of microwave and millimeter-wave circuits including the development of ferritc phase shifters for phased array radar. From 1990-1991. he was a research associate at the joint engineering college of Florida A&M University and Florida State University. Talahassee. Florida, where he worked on open resonators i n the W-band frequency range. From November 1991 to July 1993. he was a postdoctoral fellow at the University of Ottawa, Canada. where he was involved in the theoretical and experimental study of dielectric resonators. He is presently a NSERC postdoctoral fellow at the Communications Research Centre. Ottawa. where he is working on the use of dielectric resonators as antennas.
Dielectric resonator antennas—a review and general design relations for resonant frequency and bandwidth
Article first published online: 9 MAR 2007
Copyright © 1994 Wiley Periodicals, Inc., A Wiley Company
International Journal of Microwave and Millimeter-Wave Computer-Aided Engineering
Volume 4, Issue 3, pages 230–247, July 1994
How to Cite
Mongia, R. K. and Bhartia, P. (1994), Dielectric resonator antennas—a review and general design relations for resonant frequency and bandwidth. Int. J. Microw. Mill.-Wave Comput.-Aided Eng., 4: 230–247. doi: 10.1002/mmce.4570040304
- Issue published online: 9 MAR 2007
- Article first published online: 9 MAR 2007
- Manuscript Revised: 1 MAR 1994
- Manuscript Received: 22 OCT 1993
Open dielectric resonators (DRs) offer attractive features as antenna elements. These include their small size, mechanical simplicity, high radiation efficiency due to no inherent conductor loss, relatively large bandwidth, simple coupling schemes to nearly all commonly used transmission lines, and the advantage of obtaining different radiation characteristics using different modes of the resonator. In this article, we give a comprehensive review of the modes and the radiation characteristics of DRs of different shapes, such as cylindrical, cylindrical ring, spherical, and rectangular. Further, accurate closed form expressions are derived for the resonant frequencies, radiation Q-factors, and the inside fields of a cylindrical DR. These design expressions are valid over a wide range of DR parameters. Finally, the techniques used to feed DR antennas are discussed. © 1994 John Wiley & Sons, Inc.