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International Journal of Antennas and Propagation
Volume 2008 (2008), Article ID 437538, 6 pages
Research Article

Investigation on Harmonic Tuning for Active Ku-Band Rectangular Dielectric Resonator Antennas

1Department of Information Engineering, University of Pisa, Via G. Caruso 16, 56126 Pisa, Italy
2Department of Electronics and Telecommunications, University of Florence, Via C. Lombroso 6/17, 50137 Firenze, Italy

Received 21 September 2007; Revised 7 March 2008; Accepted 16 April 2008

Academic Editor: Hisashi Morishita

Copyright © 2008 Anda Guraliuc et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A slot-coupled rectangular dielectric resonator antenna (DRA) operating in the 14–14.5 GHz frequency band is investigated as a possible radiating element for an active integrated antenna of a transmitting phased array. The effectiveness of the resonator shape factor on achieving harmonic tuning is addressed. Simulation results show that the DRA shape factor can be used to provide a fine tuning of the DRA input impedance both at the fundamental frequency and its first harmonics, so synthesizing the proper load for the optimization of the microwave amplifier power-added efficiency (PAE).