International Journal of Antennas and Propagation 
Volume 2008 (2008), Article ID 437538, 6 pages
doi:10.1155/2008/437538
Research Article

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

Anda Guraliuc,1 Giuliano Manara,1 Paolo Nepa,1 Giuseppe Pelosi,2 and Stefano Selleri2

 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

Recommended by Hisashi Morishita

Abstract

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).